HIGH FREQUENCY MODULE AND COMMUNICATION APPARATUS

A high frequency module includes a mounting substrate, a plurality of components, a resin layer, and a ground electrode. The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter and a first power amplifier. The second component is any one of a second filter and a second power amplifier. A top surface of the first component and a top surface of the second component are connected to the ground electrode. The first component and the second component are configured to be capable of performing simultaneous transmission. The third component is configured not to perform a simultaneous transmission operation together with the first component and the second component. The third component is disposed between the first component and the second component in plan view from a thickness direction of the mounting substrate.

BACKGROUND ART

Technical Field

The present disclosure relates, in general, to high frequency modules and communication apparatuses, and more particularly, to a high frequency module and a communication apparatus that transmit a first transmission signal and a second transmission signal.

In Patent Document 1, a module that includes a module substrate, a branching filter that is mounted on a mounting surface of the module substrate and includes a transmission filter and a reception filter, and a resin layer that is provided on the mounting surface so as to cover a side surface of the branching filter, upper surfaces of the branching filter and the resin layer forming the same plane, is described. In this module, a metal layer is formed on at least part of the upper surfaces of the branching filter and the resin layer.Patent Document 1: International Publication No. 2014/013831

BRIEF SUMMARY

In the module described in Patent Document 1, in the case where, in addition to a first transmission filter (first component) included in the branching filter, a second transmission filter (second component) that is in contact (connection) with a metal film (ground electrode) is further disposed, heat dissipation characteristics of the second transmission filter are improved. However, in the case where the first transmission filter and the second transmission filter perform a simultaneous transmission operation, heat generation at the first transmission filter and the second transmission filter mutually affect each other, and characteristics of the module may be deteriorated.

The present disclosure provides a high frequency module and a communication apparatus capable of suppressing deterioration of characteristics even when two components whose top surfaces are connected to a ground electrode perform a simultaneous transmission operation.

A high frequency module according to an aspect of the present disclosure includes a mounting substrate, a plurality of components, a resin layer, and a ground electrode. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The plurality of components are disposed on the first main surface. The resin layer covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer. The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter and a first power amplifier that are used for transmission of a first transmission signal. The second component is any one of a second filter and a second power amplifier that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. A top surface of the first component and a top surface of the second component are connected to the ground electrode. The first component and the second component are configured to be capable of performing simultaneous transmission. The third component is configured not to perform a simultaneous transmission operation together with the first component and the second component. The third component is disposed between the first component and the second component in plan view from a thickness direction of the mounting substrate.

A high frequency module according to an aspect of the present disclosure includes a mounting substrate, a plurality of components, a resin layer, and a ground electrode. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The plurality of components are disposed on the first main surface. The resin layer covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer. The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter and a first power amplifier that are used for transmission of a first transmission signal. The second component is any one of a second filter and a second power amplifier that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. The third component is a reception-system component that is used for reception of a reception signal. A top surface of the first component and a top surface of the second component are connected to the ground electrode. The first component and the second component are configured to be capable of performing simultaneous transmission. The reception-system component is disposed between the first component and the second component in plan view from a thickness direction of the mounting substrate.

A high frequency module according to an aspect of the present disclosure includes a mounting substrate, a plurality of components, a resin layer, and a ground electrode. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The plurality of components are disposed on the first main surface. The resin layer covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer. The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter and a first power amplifier that are used for transmission of a first transmission signal. The second component is any one of a second filter and a second power amplifier that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. A top surface of the first component and a top surface of the second component are connected to the ground electrode. The third component is configured not to perform a simultaneous transmission operation together with the first component and the second component. The third component is disposed between the first component and the second component in plan view from a thickness direction of the mounting substrate. A combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of a combination of Band 1 based on 4G standards and n40 based on 5G standards, a combination of Band 3 based on the 4G standards and n40 based on the 5G standards, a combination of Band 1 based on the 4G standards and n41 based on the 5G standards, a combination of Band 3 based on the 4G standards and n41 based on the 5G standards, a combination of Band 39 based on the 4G standards and n41 based on the 5G standards, a combination of Band 66 based on the 4G standards and n41 based on the 5G standards, and a combination of Band 25 based on the 4G standards and n41 based on the 5G standards.

A high frequency module according to an aspect of the present disclosure includes a mounting substrate, a plurality of components, a resin layer, and a ground electrode. The mounting substrate has a first main surface and a second main surface that are opposite to each other. The plurality of components are disposed on the first main surface. The resin layer covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer. The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter and a first power amplifier that are used for transmission of a first transmission signal. The second component is any one of a second filter and a second power amplifier that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. The third component is a reception-system component that is used for reception of a reception signal. A top surface of the first component and a top surface of the second component are connected to the ground electrode. The reception-system component is disposed between the first component and the second component in plan view from a thickness direction of the mounting substrate. A combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of a combination of Band 1 based on 4G standards and n40 based on 5G standards, a combination of Band 3 based on the 4G standards and n40 based on the 5G standards, a combination of Band 1 based on the 4G standards and n41 based on the 5G standards, a combination of Band 3 based on the 4G standards and n41 based on the 5G standards, a combination of Band 39 based on the 4G standards and n41 based on the 5G standards, a combination of Band 66 based on the 4G standards and n41 based on the 5G standards, and a combination of Band 25 based on the 4G standards and n41 based on the 5G standards.

A communication apparatus according to an aspect of the present disclosure includes any one of the high frequency modules described above and a signal processing circuit that processes the first transmission signal and the second transmission signal that pass through the high frequency module.

With a high frequency module and a communication apparatus according to the present disclosure configured as described above, even when two components that are connected to a ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

DETAILED DESCRIPTION

FIGS.2to12that will be referenced in first to fifth embodiments and the like described below are schematic diagrams, and ratios of the sizes and the thicknesses of component elements in these figures do not necessarily correspond to the actual dimensional ratios.

First Embodiment

A high frequency module1and a communication apparatus500according to a first embodiment will be described below with reference toFIGS.1to3.

The high frequency module1includes, as illustrated inFIG.1, a plurality of antenna terminals (in this example, a first antenna terminal11and a second antenna terminal12), a first low pass filter21, a second low pass filter22, a first switch30, a first matching circuit41, a second matching circuit42, a third matching circuit43, a fourth matching circuit44, a first filter51, a second filter52, a third filter53, and a fourth filter54. The high frequency module1further includes a second switch61, a third switch62, a fifth matching circuit71, a sixth matching circuit72, a seventh matching circuit73, an eighth matching circuit74, a first power amplifier81, a second power amplifier82, a first low noise amplifier83, a second low noise amplifier84, and a fourth switch85. The high frequency module1also includes a plurality of (in the example illustrated in the drawing, two) signal input terminals91and92and a plurality of (in the example illustrated in the drawing, two) signal output terminals93and94.

The high frequency module1further includes, as illustrated inFIGS.2and3, a mounting substrate100, a shield layer110, a resin layer120, and external connection terminals200. The mounting substrate100has a first main surface101and a second main surface102that are opposite to each other in a thickness direction D1of the mounting substrate100. In the first embodiment, a plurality of components, such as the first filter51, the second filter52, the third filter53, and the fourth filter54are disposed on the first main surface101of the mounting substrate100. “A is disposed on the first main surface101of the mounting substrate100” does not necessarily represent a state in which A is mounted directly on the first main surface101but may represent a state in which A is disposed in a space that is near the first main surface101, out of the space that is near the first main surface101and a space that is near the second main surface102, the spaces being isolated from each other by the mounting substrate100. That is, a state in which A is mounted on the first main surface101with other circuit elements or electrodes interposed therebetween.

The high frequency module1according to the first embodiment is, for example, used for the communication apparatus500supporting multiple modes/multiple bands. The communication apparatus500is, for example, a mobile phone (for example, a smartphone). However, the communication apparatus500is not necessarily a mobile phone and may be a wearable terminal (for example, a smartwatch). The high frequency module1is, for example, a module capable of supporting 4G (fourth generation mobile communications) standards and 5G (fifth generation mobile communications) standards. The 4G standards are, for example, 3GPP (Third Generation Partnership Project) LTE (Long Term Evolution) standards. The 5G standards are, for example, 5G NR (New Radio).

The first antenna terminal11is electrically connected to a first antenna511(seeFIG.1). The second antenna terminal12is electrically connected to a second antenna terminal512(seeFIG.1). “A is connected to B” does not necessarily represent a state in which A is in contact with B but also includes a state in which A and B are electrically connected with a conductor electrode, a conductor terminal, a wire, or other circuit components interposed therebetween.

The first switch30is configured to be capable of connecting the first filter51, the second filter52, the third filter53, and the fourth filter54to each of the first antenna511and the second antenna512. The first switch30is configured to be capable of connecting the first filter51to the first antenna511and connecting the second filter52to the second antenna512at the same time. That is, the high frequency module1is a module capable of supporting carrier aggregation and dual connectivity. Carrier aggregation and dual connectivity represent communications using radio waves of multiple frequency bands at the same time. Hereinafter, signal transmission based on carrier aggregation or dual connectivity may also be referred to as simultaneous transmission. Being capable of performing simultaneous transmission means being capable of transmitting signals by carrier aggregation or dual connectivity.

The high frequency module1according to the first embodiment performs communication (transmission) of a signal of a frequency band defined by 4G and communication (transmission) of a signal of a frequency band defined by 5G at the same time. Furthermore, the high frequency module1may perform communication of a signal of a frequency band defined by 4G and communication of a signal of a frequency band defined by 4G at the same time. The high frequency module1may perform communication of a signal of a frequency band defined by 5G and communication of a signal of a different frequency band defined by 5G at the same time.

In the high frequency module1according to the first embodiment, simultaneous transmission is performed using Band 3 (a frequency band from 1710 MHz to 1785 MHz for transmission), which is a frequency band of a mid-band defined by 4G, and n41 (a frequency band from 2496 MHz to 2690 MHz), which is a frequency band of a high band defined by 5G. The band n41 is used for TDD (Time Division Duplex) communications. Band 3 is used for FDD (Frequency Division Duplex).

In the high frequency module1according to the first embodiment, a transmission signal of Band 3 (first transmission signal) passes through the first filter51. In the high frequency module1according to the first embodiment, a transmission signal of n41 (second transmission signal) passes through the second filter52. The third filter53is configured not to perform a simultaneous transmission operation together with the first filter51and the second filter52. Combinations of frequency bands used for simultaneous transmission are not limited as long as they are defined by standards. “Not performing a simultaneous transmission operation” represents, at the time when simultaneous transmission using a combination of frequency bands defined by standards is being performed, not performing transmission using a frequency band different from the combination of frequency bands using which simultaneous transmission is being performed and not performing simultaneous communication together with each of the frequency bands using which simultaneous communication is being performed in the high frequency module1.

The resin layer120is disposed near the first main surface101of the mounting substrate100and covers at least part of an outer peripheral surface (side surface) of a component such as a filter. The resin layer120covers outer peripheral surfaces of the first filter51, the second filter52, the third filter53, and the fourth filter54.

The shield layer110is provided on a surface of the resin layer120that is far away from the mounting substrate100and covers at least part of the resin layer120. The shield layer110is connected to the ground with a ground terminal interposed therebetween. That is, the shield layer110may be called a ground electrode.

In the first embodiment, the plurality of components disposed on the first main surface101of the mounting substrate100include a first component, a second component, and a third component. The first component is a first transmission-system component that is one of the first filter51and the first power amplifier81used for transmission of a first transmission signal.

The second component is a second transmission-system component that is one of the second filter52and the second power amplifier82used for transmission of a second transmission signal of a frequency band different from the frequency band of the first transmission signal. In this example, the first transmission-system component is the first filter51, and the second transmission-system component is the second filter52.

A top surface of the first filter51as the first transmission-system component and the top surface of the second filter52as the second transmission-system component are connected to the shield layer110, which is a ground electrode. Furthermore, as described above, the first filter51as the first transmission-system component and the second filter52as the second transmission-system component are configured to be capable of performing simultaneous transmission. The third component is configured not to perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component. The third component is, for example, the third filter53. The third filter53as the third component is disposed between the first filter51as the first transmission-system component and the second filter52as the second transmission-system component (seeFIG.2) in plan view from the thickness direction D1of the mounting substrate100(seeFIG.3). The top surface of a component (first transmission-system component, second transmission-system component) is a surface of the component that is far away from the mounting substrate100, out of two surfaces of the component that are opposite to each other in the thickness direction of the component (the thickness direction D1of the mounting substrate100). Furthermore, the bottom surface of a component (first transmission-system component, second transmission-system component) is a surface of the component that is near the mounting substrate100, out of the two surfaces of the component that are opposite to each other in the thickness direction of the component (the thickness direction D1of the mounting substrate100). Furthermore, “a component C is disposed between a component A and a component B in plan view from the thickness direction D1of the mounting substrate100” represents a state in which at least one of a plurality of line segments each connecting a point in the component A with a point in the component B passes through the region of the component C in plan view from the thickness direction D1of the mounting substrate100. Furthermore, “in plan view from the thickness direction D1of the mounting substrate100” represents seeing the mounting substrate100and a component disposed at the mounting substrate100by orthographical projection onto a plane parallel to a main surface (for example, the first main surface101) of the mounting substrate100.

Configurations of the high frequency module1and the communication apparatus500according to the first embodiment will be described below with reference toFIGS.1to4.

The high frequency module1is configured to, for example, amplify a transmission signal (high frequency signal) input from a signal processing circuit501(seeFIG.1) and output the amplified signal to a first antenna511and a second antenna512. The high frequency module1is configured to, for example, amplify a reception signal (high frequency signal) input from the first antenna511and the second antenna512and output the amplified signal to the signal processing circuit501. The signal processing circuit501is not a component element of the high frequency module1but is a component element of the communication apparatus500including the high frequency module1. The high frequency module1is, for example, controlled by the signal processing circuit501included in the communication apparatus500. The communication apparatus500includes the high frequency module1and the signal processing circuit501. The communication apparatus500further includes the first antenna511and the second antenna512. The communication apparatus500further includes a circuit substrate at which the high frequency module1is mounted. The circuit substrate is, for example, a printed wiring board. The circuit substrate includes a ground electrode to which a ground potential is applied.

The first antenna511is connected to the first antenna terminal11of the high frequency module1. The second antenna512is connected to the second antenna terminal12of the high frequency module1. The first antenna511and the second antenna512include a transmission function for radiating, as a radio wave, a transmission signal output from the high frequency module1and a reception function for receiving a reception signal as a radio wave from the outside and outputting the reception signal to the high frequency module1.

The signal processing circuit501processes signals (for example, a reception signal and a transmission signal) passing through the high frequency module1. The signal processing circuit501includes, for example, an RF signal processing circuit502and a baseband signal processing circuit503. The RF signal processing circuit502is, for example, an RFIC (Radio Frequency Integrated Circuit) and performs signal processing for a high frequency signal. For example, the RF signal processing circuit502performs signal processing such as up-conversion for a high frequency signal (transmission signal) output from the baseband signal processing circuit503and outputs the signal-processed high frequency signal. Furthermore, for example, the RF signal processing circuit502performs signal processing such as down-conversion for a high frequency signal (reception signal) output from the high frequency module1and outputs the signal-processed high frequency signal to the baseband signal processing circuit503.

The baseband signal processing circuit503is, for example, a BBIC (Baseband Integrated Circuit). The baseband signal processing circuit503generates an I-phase signal and a Q-phase signal from a baseband signal. Baseband signals include, for example, an audio signal, an image signal, and the like input from the outside. The baseband signal processing circuit503performs IQ modulation processing by combining the I-phase signal with the Q-phase signal and outputs a transmission signal. The transmission signal is generated as a modulation signal (IQ signal) obtained by modulating the amplitude of a carrier signal of a predetermined frequency by a period longer than the period of the carrier signal. The reception signal processed at the baseband signal processing circuit503is, for example, used as an image signal for image display or an audio signal for conversation. The high frequency module1according to the first embodiment transfers a high frequency signal (reception signal) to and from the first and second antennas511and512and the RF signal processing circuit502of the signal processing circuit501.

The high frequency module1includes, as illustrated inFIG.1, the first antenna terminal11, the second antenna terminal12, the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, and the fourth filter54. The high frequency module1further includes the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, the first low noise amplifier83, the second low noise amplifier84, and the fourth switch85. Furthermore, the high frequency module1includes the plurality of (in the example illustrated in the drawing, two) signal input terminals91and92, the plurality of (in the example illustrated in the drawing, two) signal output terminals93and94, the first low pass filter21, and the second low pass filter22.

The first antenna terminal11is electrically connected to the first antenna511. The second antenna terminal12is electrically connected to the second antenna512.

The first low pass filter21is disposed between the first antenna terminal11and the first switch30. The second low pass filter22is disposed between the second antenna terminal12and the first switch30. In other words, the first low pass filter21is connected between the first antenna terminal11and the first switch30. The second low pass filter22is connected between the second antenna terminal12and the first switch30. “C is connected between A and B” represents a state in which C is connected to both A and B between A and B. That is, one end of the first low pass filter21is connected to the first antenna terminal11, and the other end of the first low pass filter21is connected to the first switch30. One end of the second low pass filter22is connected to the second antenna terminal12, and the other end of the second low pass filter22is connected to the first switch30.

The first switch30is a switch IC composed of a single chip.

The first switch30is configured to be capable of connecting the first antenna511with the first filter51and capable of connecting the second antenna512with the second filter52. The first switch30is configured to be capable of connecting the first antenna511and the second antenna512with the first filter51and the second filter52, respectively, at the same time. That is, the first switch30is a switch IC including a switch that is capable of connecting the first antenna511with the first filter51and capable of connecting the second antenna512with the second filter52.

The first switch30is electrically connected to antenna terminals. Specifically, the first switch30is electrically connected to the first antenna terminal11with the first low pass filter21interposed therebetween and to the second antenna terminal12with the second low pass filter22interposed therebetween. The first switch30is electrically connected to the first filter51, the second filter52, the third filter53, and the fourth filter54.

Specifically, the first switch30includes a first terminal31, a second terminal32, a third terminal33, a fourth terminal34, a fifth terminal35, and a sixth terminal36. The first switch30selects, as a terminal to which the first terminal31is to be connected, one of the third terminal33, the fourth terminal34, the fifth terminal35, and the sixth terminal36, under the control of the signal processing circuit501. The first switch30selects, as a terminal to which the second terminal32is to be connected, one of the third terminal33, the fourth terminal34, the fifth terminal35, and the sixth terminal36, under the control of the signal processing circuit501. For example, under the control of the signal processing circuit501, the first switch30selects the third terminal33, as the terminal to which the first terminal31is to be connected, out of the third terminal33, the fourth terminal34, the fifth terminal35, and the sixth terminal36. Under the control of the signal processing circuit501, the first switch30selects the fifth terminal35, as the terminal to which the second terminal32is to be connected, out of the third terminal33, the fourth terminal34, the fifth terminal35, and the sixth terminal36.

The first terminal31is electrically connected to the first antenna terminal11. That is, the first terminal31is electrically connected to the first antenna511with the first low pass filter21and the first antenna terminal11interposed therebetween. The second terminal32is electrically connected to the second antenna terminal12. That is, the second terminal32is electrically connected to the second antenna512with the second low pass filter22and the second antenna terminal12interposed therebetween. The first terminal31is not necessarily connected to the first antenna511with the first low pass filter21interposed therebetween. The first terminal31may be connected to the first antenna terminal11with a coupler or other components interposed therebetween or may be directly connected to the first antenna terminal11. Similarly, the second terminal32is not necessarily connected to the second antenna512with the second low pass filter22interposed therebetween. The second terminal32may be connected to the second antenna terminal12with a coupler or other components interposed therebetween or may be directly connected to the second antenna terminal12.

The third terminal33is electrically connected to the first filter51. The fourth terminal34is electrically connected to the third filter53. The fifth terminal35is electrically connected to the second filter52. The sixth terminal36is electrically connected to the fourth filter54.

The first matching circuit41is, for example, an inductor. More particularly, the first matching circuit41is a chip inductor. The first matching circuit41is electrically connected to a path between the first switch30and the first filter51and performs impedance matching between the first switch30and the first filter51.

The second matching circuit42is, for example, an inductor. More particularly, the second matching circuit42is a chip inductor. The second matching circuit42is electrically connected to a path between the first switch30and the second filter52and performs impedance matching between the first switch30and the second filter52.

The third matching circuit43is, for example, an inductor. More particularly, the third matching circuit43is a chip inductor. The third matching circuit43is electrically connected to a path between the first switch30and the third filter53and performs impedance matching between the first switch30and the third filter53.

The fourth matching circuit44is, for example, an inductor. More particularly, the fourth matching circuit44is a chip inductor. The fourth matching circuit44is electrically connected to a path between the first switch30and the fourth filter54and performs impedance matching between the first switch30and the fourth filter54.

The first filter51is a transmission filter that allows a transmission signal of Band 3 (first transmission signal) output from the first power amplifier81to pass therethrough. The first filter51is electrically connected to the first switch30with the first matching circuit41interposed therebetween. That is, the first filter51is connected to the first switch30and transmits the first transmission signal. The first filter51is, for example, a ladder filter and includes a plurality of (for example, four) series-arm resonators and a plurality of (for example, three) parallel-arm resonators. The first filter51is, for example, an acoustic wave filter. In the acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is an acoustic wave resonator. The acoustic wave filter is, for example, a surface acoustic wave filter using surface acoustic waves. In the surface acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is, for example, a SAW (Surface Acoustic Wave) resonator. The first filter51is not limited to a SAW filter. The first filter51may be a filter different from a SAW filter and may be, for example, a BAW (Bulk Acoustic Wave) filter. A resonator in the BAW filter is, for example, an FBAR (Film Bulk Acoustic Resonator) or an SMR (Solidly Mounted Resonator). The BAW filter includes a substrate. The substrate included in the BAW filter is, for example, a silicon substrate.

The second filter52is a filter that allows a transmission signal of n41 (second transmission signal) output from the second power amplifier82to pass therethrough. That is, the second filter52has a function as a transmission filter. The second filter52is electrically connected to the first switch30with the second matching circuit42interposed therebetween. That is, the second filter52is connected to the first switch30and transmits the second transmission signal. The second filter52is, for example, a ladder filter and includes a plurality of (for example, four) series-arm resonators and a plurality of (for example, three) parallel-arm resonators. The second filter52is, for example, an acoustic wave filter. In the acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is an acoustic wave resonator. The acoustic wave filter is, for example, a surface acoustic wave filter using surface acoustic waves. In the surface acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is, for example, a SAW resonator. The second filter52is not limited to a SAW filter. The second filter52may be a filter different from a SAW filter and may be, for example, a BAW filter.

The third filter53is a filter that allows a transmission signal of n40 (third transmission signal) output from the second power amplifier82to pass therethrough. That is, the third filter53has a function as a transmission filter. The third filter53is electrically connected to the first switch30with the third matching circuit43interposed therebetween. That is, the third filter53is connected to the first switch30and transmits the third transmission signal. The third filter53is, for example, a ladder filter and includes a plurality of (for example, four) series-arm resonators and a plurality of (for example, three) parallel-arm resonators. The third filter53is, for example, an acoustic wave filter. In the acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is an acoustic wave resonator. The acoustic wave filter is, for example, a surface acoustic wave filter using surface acoustic waves. In the surface acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is, for example, a SAW resonator. The third filter53is not limited to a SAW filter. The third filter53may be a filter different from a SAW filter and may be, for example, a BAW filter.

Furthermore, the second filter52and the third filter53each includes a function as a reception filter. For example, the second filter52allows a reception signal of n41 to be input to the first low noise amplifier83to pass therethrough. For example, the third filter53allows a reception signal of n40 to be input to the first low noise amplifier83to pass therethrough.

The fourth filter54is, for example, a reception filter that allows a reception signal of Band 3 to be input to the second low noise amplifier84to pass therethrough. The frequency band of the reception signal of Band 3 ranges from 1805 MHz to 1880 MHz. The fourth filter54is electrically connected to the first switch30with the fourth matching circuit44interposed therebetween. That is, the fourth filter54is connected to the first switch30and transmits the reception signal. The fourth filter54is, for example, a ladder filter and includes a plurality of (for example, four) series-arm resonators and a plurality of (for example, three) parallel-arm resonators. The fourth filter54is, for example, an acoustic wave filter. In the acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is an acoustic wave resonator. The acoustic wave filter is, for example, a surface acoustic wave filter using surface acoustic waves. In the surface acoustic wave filter, each of the plurality of series-arm resonators and the plurality of parallel-arm resonators is, for example, a SAW resonator. The fourth filter54is not limited to a SAW filter. The fourth filter54may be a filter different from a SAW filter and may be, for example, a BAW filter.

The second switch61is composed of a single chip and switches connection between the first power amplifier81and the first filter51. That is, the second switch61switches a filter connected to the first power amplifier81. Specifically, the second switch61includes a common terminal611and a plurality of (in the example illustrated in the drawing, three) selection terminals612,613, and614. Under the control of the signal processing circuit501, the second switch61selects at least one of the plurality of selection terminals612,613, and614as a terminal to which the common terminal611is to be connected. The common terminal611is electrically connected to the first power amplifier81. The plurality of selection terminals612,613, and614are connected to the first switch30. That is, the plurality of selection terminals612,613, and614are electrically connected to the first antenna terminal11or the second antenna terminal12with the first switch30interposed therebetween. In other words, the plurality of selection terminals612,613, and614are electrically connected to the first antenna511with the first antenna terminal11interposed therebetween or to the second antenna512with the second antenna terminal12interposed therebetween. Specifically, the selection terminal614is electrically connected to the first filter51, and the selection terminal614is electrically connected to the first antenna511or the second antenna512with the first filter51interposed therebetween. Connection destinations for the selection terminals612and613are omitted in the drawing.

The third switch62is composed of a single chip and switches connection between the second power amplifier82and the second and third filters52and53. That is, the third switch62switches a filter connected to the second power amplifier82. Specifically, the third switch62includes a common terminal621and a plurality of (in the example illustrated in the drawing, six) selection terminals622,623,624,625,626, and627. Under the control of the signal processing circuit501, at the time of transmission of a signal, the third switch62selects at least one of the plurality of selection terminals622,623, and624as a terminal to which the common terminal621is to be connected. The common terminal621is electrically connected to the second power amplifier82. The plurality of selection terminals622,623, and624are connected to the first switch30. That is, the plurality of selection terminals622,623, and624are electrically connected to the first antenna terminal11or the second antenna terminal12with the first switch30interposed therebetween. In other words, the plurality of selection terminals622,623, and624are electrically connected to the first antenna511with the first antenna terminal11interposed therebetween and to the second antenna512with the second antenna terminal12interposed therebetween. Specifically, the selection terminal622is electrically connected to the third filter53, and the selection terminal622is electrically connected to the first antenna511or the second antenna512with the third filter53interposed therebetween. The selection terminal623is electrically connected to the second filter52, and the selection terminal623is electrically connected to the first antenna511or the second antenna512with the second filter52interposed therebetween. A connection destination for the selection terminal624is omitted in the drawing.

Furthermore, at the time of reception, the third switch62connects, under the control of the signal processing circuit501, one of the selection terminals622,623, and624with one of the selection terminals625,626, and627. For example, to receive a signal of n41, the third switch62connects the selection terminal623with the selection terminal625. To receive a signal of n40, the third switch62connects the selection terminal622with the selection terminal626. A connection destination for the selection terminal627is omitted in the drawing.

The fifth matching circuit71is, for example, an inductor. More particularly, the fifth matching circuit71is a chip inductor. The fifth matching circuit71is electrically connected to a path between the second switch61and the first power amplifier81and performs impedance matching between the second switch61and the first power amplifier81.

The sixth matching circuit72is, for example, an inductor. More particularly, the sixth matching circuit72is a chip inductor. The sixth matching circuit72is electrically connected to a path between the third switch62and the second power amplifier82and performs impedance matching between the third switch62and the second power amplifier82.

The seventh matching circuit73is, for example, an inductor. More particularly, the seventh matching circuit73is a chip inductor. The seventh matching circuit73is electrically connected to a path between the fourth switch85and the first low noise amplifier83and performs impedance matching between the fourth switch85and the first low noise amplifier83.

The eighth matching circuit74is, for example, an inductor. More particularly, the eighth matching circuit74is a chip inductor. The eighth matching circuit74is electrically connected to a path between the fourth switch85and the second low noise amplifier84and performs impedance matching between the fourth switch85and the second low noise amplifier84.

The first power amplifier81is an amplifier that amplifies a transmission signal of Band 3 (first transmission signal) output from the RF signal processing circuit502of the signal processing circuit501. An input terminal of the first power amplifier81is electrically connected to the signal input terminal91. An output terminal of the first power amplifier81is electrically connected to the fifth matching circuit71. That is, the first power amplifier81is electrically connected to the first filter51with the fifth matching circuit71interposed therebetween. In other words, the first power amplifier81is electrically connected to the first switch30with the first filter51interposed therebetween.

The second power amplifier82is an amplifier that amplifies a transmission signal of n41 (second transmission signal) or a transmission signal of n40 output from the RF signal processing circuit502of the signal processing circuit501. An input terminal of the second power amplifier82is electrically connected to the signal input terminal92. An output terminal of the second power amplifier82is electrically connected to the sixth matching circuit72. That is, the second power amplifier82is electrically connected to the second filter52with the sixth matching circuit72interposed therebetween. In other words, the second power amplifier82is electrically connected to the first switch30with the second filter52interposed therebetween.

The first low noise amplifier83is an amplifier that amplifies with low noise a reception signal that has passed through the second filter52or the third filter53. An input terminal of the first low noise amplifier83is electrically connected to the seventh matching circuit73, and an output terminal of the first low noise amplifier83is electrically connected to the signal output terminal93. That is, the first low noise amplifier83is electrically connected to the second filter52or the third filter53with the seventh matching circuit73interposed therebetween. In other words, the first low noise amplifier83is electrically connected to the first switch30with the second filter52or the third filter53interposed therebetween.

The second low noise amplifier84is an amplifier that amplifies with low noise a reception signal that has passed through the fourth filter54. An input terminal of the second low noise amplifier84is electrically connected to the eighth matching circuit74, and an output terminal of the second low noise amplifier84is electrically connected to the signal output terminal94. That is, the second low noise amplifier84is electrically connected to the fourth filter54with the eighth matching circuit74interposed therebetween. In other words, the second low noise amplifier84is electrically connected to the first switch30with the fourth filter54interposed therebetween.

The fourth switch85is configured to be capable of connecting the seventh matching circuit73with the third switch62and capable of connecting the eighth matching circuit74with the fourth filter54. Specifically, the fourth switch85includes a first terminal851, a second terminal852, a third terminal853, a fourth terminal854, a fifth terminal855, and a sixth terminal856.

The first terminal851is electrically connected to the seventh matching circuit73. That is, the first terminal851is electrically connected to the first low noise amplifier83with the seventh matching circuit73interposed therebetween. The second terminal852is electrically connected to the eighth matching circuit74. That is, the second terminal852is electrically connected to the second low noise amplifier84with the eighth matching circuit74interposed therebetween.

The third terminal853is electrically connected to the selection terminal626of the third switch62. The fourth terminal854is electrically connected to the selection terminal625of the third switch62. The sixth terminal856is electrically connected to the fourth filter54. A connection destination for the fifth terminal855is omitted in the drawing.

For example, to receive a signal based on the 5G standards, the fourth switch85selects one of the third terminal853and the fourth terminal854as a terminal to which the first terminal851is to be connected, under the control of the signal processing circuit501. That is, to receive a signal based on the 5G standards, the fourth switch85switches a filter connected to the first low noise amplifier83. For example, to receive a signal of n40, the fourth switch85selects the third terminal853as a terminal to which the first terminal851is to be connected, under the control of the signal processing circuit501. To receive a signal of n41, the fourth switch85selects the fourth terminal854as a terminal to which the first terminal851is to be connected, under the control of the signal processing circuit501.

Furthermore, for example, to receive a signal based on the 4G standards, the fourth switch85selects one of the fifth terminal855and the sixth terminal856as a terminal to which the second terminal852is to be connected, under the control of the signal processing circuit501. That is, to receive a signal based on the 4G standards, the fourth switch85switches a filter connected to the second low noise amplifier84. For example, to receive a signal of Band 3, the fourth switch85selects the sixth terminal856as a terminal to which the second terminal852is to be connected, under the control of the signal processing circuit501.

In the first embodiment, the first low noise amplifier83, the second low noise amplifier84, and the fourth switch85are integrated into a single chip to form a switch IC800(seeFIG.2).

The plurality of (in the example illustrated in the drawing, two) signal input terminals91and92and the plurality of (in the example illustrated in the drawing, two) signal output terminals93and94are connected to the RF signal processing circuit502. That is, the first power amplifier81is electrically connected to the RF signal processing circuit502with the signal input terminal91interposed therebetween. The second power amplifier82is electrically connected to the RF signal processing circuit502with the signal input terminal92interposed therebetween. The first low noise amplifier83is electrically connected to the RF signal processing circuit502with the signal output terminal93interposed therebetween. The second low noise amplifier84is electrically connected to the RF signal processing circuit502with the signal output terminal94interposed therebetween.

The high frequency module1further includes a controller2(seeFIG.2). The controller2is, for example, a single-chip IC including a substrate and a circuit part. The substrate has a first surface and a second surface that are opposite to each other. The substrate is, for example, a silicon substrate. The circuit part includes a control circuit that controls the first power amplifier81and the second power amplifier82in accordance with control signals from the signal processing circuit501. The controller2is, for example, flip-chip mounted on the first main surface101of the mounting substrate100in such a manner that the first surface of the substrate is near the first main surface101of the mounting substrate100.

As illustrated inFIGS.2and3, the high frequency module1further includes the mounting substrate100, the shield layer110, the resin layer120, and the external connection terminals200. The mounting substrate100has the first main surface101and the second main surface102that are opposite to each other in the thickness direction D1of the mounting substrate100.

The mounting substrate100is, for example, a printed wiring board, an LTCC (Low Temperature Co-fired Ceramics) substrate, an HTCC (High Temperature Co-fired Ceramics) substrate, or a resin multilayer substrate. In this example, the mounting substrate100is a multilayer substrate including a plurality of dielectric layers and a plurality of conductive layers and is a ceramic substrate. The plurality of dielectric layers and the plurality of conductive layers are laminated in the thickness direction D1of the mounting substrate100. The plurality of conductive layers are formed in predetermined patterns set for the individual layers. Each of the plurality of conductive layers includes one or a plurality of conductor units on a plane that is orthogonal to the thickness direction D1of the mounting substrate100. A material of each of the conductive layers is, for example, copper. The plurality of conductive layers include a ground layer. In the high frequency module1, one or more ground terminals included in the plurality of external connection terminals200(seeFIG.3) and the ground layer are electrically connected with a via conductor, a pad, or the like, which is included in the mounting substrate100, interposed therebetween.

The mounting substrate100is not limited to a printed wiring board or an LTCC substrate and may be a wiring structure body. The wiring structure body is, for example, a multilayer structure body. The multilayer structure body includes at least one insulating layer and at least one conductive layer. The insulating layer is formed in a predetermined pattern. In the case where a plurality of insulating layers are provided, the plurality of insulating layers are formed in predetermined patterns set for the individual layers. The conductive layer is formed in a predetermined pattern different from the predetermined pattern of the insulating layer. In the case where a plurality of conductive layers are provided, the plurality of conductive layers are formed in predetermined patterns set for the individual layers. The conductive layer may include one or a plurality of redistribution parts. In the wiring structure body, a first surface, out of two surfaces that are opposite to each other in the thickness direction of the multilayer structure body, corresponds to the first main surface101of the mounting substrate100, and a second surface out of the two surfaces corresponds to the second main surface102of the mounting substrate100. The wiring structure body may be, for example, an interposer. The interposer may be an interposer including a silicon substrate or may be a substrate including multiple layers.

The first main surface101and the second main surface102of the mounting substrate100are away from each other in the thickness direction D1of the mounting substrate100and intersect in the thickness direction D1of the mounting substrate100. For example, the first main surface101of the mounting substrate100is orthogonal to the thickness direction D1of the mounting substrate100. However, for example, a side surface of the conductor unit may be included as a surface that is not orthogonal to the thickness direction D1. Furthermore, for example, the second main surface102of the mounting substrate100is orthogonal to the thickness direction D1of the mounting substrate100. However, for example, a side surface of the conductor unit may be included as a surface that is not orthogonal to the thickness direction D1. Furthermore, fine roughnesses, recesses, or protrusions may be formed in the first main surface101and the second main surface102of the mounting substrate100. The mounting substrate100has a rectangular shape in plan view from the thickness direction D1of the mounting substrate100. However, the mounting substrate100does not necessarily have a rectangular shape and may have, for example, a square shape.

The high frequency module1includes a plurality of components. The plurality of components include the first low pass filter21, the second low pass filter22, the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. The outer peripheral shape of each of the plurality of components in plan view from the thickness direction D1of the mounting substrate100is a quadrilateral shape (rectangular shape).

Each of the plurality of components of the high frequency module1is mounted on the first main surface101or the second main surface102of the mounting substrate100. In the first embodiment, each of the plurality of electronic components of the high frequency module1is disposed on the first main surface101.

The plurality of external connection terminals200are each formed in a rectangular column shape and are disposed on the second main surface102. More particularly, a material of each of the plurality of external connection terminals200is, for example, metal (for example, copper or copper alloy).

The plurality of external connection terminals200include the first antenna terminal11, the second antenna terminal12, the one or more ground terminals, the signal input terminals91and92, and the signal output terminals93and94. The one or more ground terminals are connected to the ground layer of the mounting substrate100, as described above. The ground layer is a circuit ground of the high frequency module1, and the plurality of electronic components of the high frequency module1include an electronic component connected to the ground layer.

A part of the resin layer120that is near the first main surface101of the mounting substrate100covers at least part of the plurality of electronic components disposed on the first main surface101of the mounting substrate100. Thus, the resin layer120seals the plurality of electronic components disposed on the first main surface101of the mounting substrate100. The resin layer120includes resin (for example, epoxy resin). The resin layer120may include a filler as well as resin.

The shield layer110covers at least part of the resin layer120(seeFIG.2). The shield layer110has conductive characteristics. The shield layer110has a multilayer structure in which a plurality of metal layers are laminated. However, the shield layer110does not necessarily have a multilayer structure and may be composed of a single metal layer. The metal layer includes one or a plurality of types of metal. The shield layer110covers a main surface121of the resin layer120that is far away from the mounting substrate100, an outer peripheral surface123of the resin layer120, and at least part of an outer peripheral surface103of the mounting substrate100. The shield layer110further covers the first filter51, which is the first transmission-system component, the second filter52, which is the second transmission-system component, and the third filter53, which is the third component. The shield layer110is electrically connected to the ground terminal included in the mounting substrate100. Thus, the shield layer110has the same potential as the potential of the ground layer. That is, the shield layer110can also serve as a ground electrode.

Next, the arrangement relationship between a plurality of components, in particular, the arrangement relationship between the first filter51, the second filter52, and the third filter53, will be described.

The first filter51includes an input terminal51ato which the first transmission signal is input, and the second filter52includes an input terminal52ato which the second transmission signal is input (seeFIG.2).

The first filter51has two surfaces (top surface51band bottom surface51c) that are opposite to each other in the thickness direction of the first filter (the thickness direction D1of the mounting substrate100) (seeFIG.3). The second filter52has two surfaces (top surface52band bottom surface52c) that are opposite to each other in the thickness direction of the second filter (seeFIG.3). The third filter53has two surfaces (top surface53band bottom surface53c) that are opposite to each other in the thickness direction of the third filter (seeFIG.3).

The top surface51bof the first filter51and the top surface52bof the second filter52are connected to the shield layer110(seeFIG.3). Furthermore, in the first embodiment, the top surface53bof the third filter53is connected to the shield layer110(seeFIG.3).

The third filter53is disposed between the first filter51and the second filter52in plan view from the thickness direction D1of the mounting substrate100. In the first embodiment, the first filter51, the second filter52, and the third filter53are arranged in such a manner that the third filter53is disposed between the first filter51and the second filter52along a direction D2that is orthogonal to (intersects) the thickness direction D1.

More particularly, the first filter51, the second filter52, and the third filter53are arranged along a short side of the first filter51in plan view from the thickness direction D1of the mounting substrate100. Furthermore, the first filter51, the second filter52, and the third filter53are arranged along a short side of the second filter52in plan view from the thickness direction D1of the mounting substrate100. Moreover, the first filter51, the second filter52, and the third filter53are arranged along a short side of the third filter53in plan view from the thickness direction D1of the mounting substrate100. That is, in the first embodiment, the first filter51, the second filter52, and the third filter53are arranged along the short sides of the first filter51, the second filter52, and the third filter53. In other words, the third filter53(third component) is arranged in such a manner that a long side of the third filter53intersects a direction (for example, the direction D2) along the short side of the first filter51(first component). Furthermore, the third filter53(third component) is arranged in such a manner that the long side of the third filter53intersects a direction (for example, the direction D2) along the short side of the second filter52(first component).

The input terminal51aof the first filter51(seeFIG.2) is arranged near a side51dthat is closer to the third filter53, out of two sides51dand51eof the first filter51that intersect the direction (direction D2) along which the first filter51, the second filter52, and the third filter53are arranged.

The input terminal52aof the second filter52is arranged near a side52dthat is closer to the third filter53, out of two sides52dand52eof the second filter52that intersect the direction (direction D2) along which the first filter51, the second filter52, and the third filter53are arranged.

As described above, the high frequency module1according to the first embodiment includes the mounting substrate100, the plurality of components, the resin layer120, and the ground electrode (for example, the shield layer110). The mounting substrate100has the first main surface101and the second main surface102that are opposite to each other. The plurality of components are disposed on the first main surface101. The resin layer120covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer120. The plurality of components include the first component, the second component, and the third component. The first component is, for example, a first transmission-system component, which is the first filter51used for transmission of a first transmission signal. The second component is, for example, a second transmission-system component, which is the second filter52used for transmission of a second transmission signal of a frequency band different from the frequency band of the first transmission signal. The top surface (for example, the top surface51b) of the first transmission-system component and the top surface (for example, the top surface52b) of the second transmission-system component are connected to the ground electrode. The first transmission-system component and the second transmission-system component are configured to be capable of performing simultaneous transmission. The third component is configured not to perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component. The third component is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100.

With this arrangement, the third component, which does not perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component, is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100. That is, even when the first transmission-system component and the second transmission-system component perform a simultaneous transmission operation, the third component does not perform an operation. Thus, compared to the case where the first transmission-system component and the second transmission-system component are adjacent to each other and thermal interference thus occurs, mutual influence of heat generation at the first transmission-system component and the second transmission-system component is small. This is because part of heat generated at the first transmission-system component and moving toward the second transmission-system component and part of heat generated at the second transmission-system component and moving toward the first transmission-system component flow into the third component and the inflow of the heat into the third component contributes to reducing thermal interference between the first transmission-system component and the second transmission-system component. Consequently, in the high frequency module1according to the first embodiment, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of characteristics can be suppressed. “A and B are adjacent to each other” represents a state in which no component is present between A and B.

Modifications of the first embodiment will be described below.

(4.1) First Modification

In the first embodiment, each of the plurality of electronic components included in the high frequency module1is mounted on the first main surface101of the mounting substrate100. However, the plurality of electronic components are not necessarily arranged as described above.

At least one of the plurality of electronic components may be provided on the second main surface102of the mounting substrate100. A high frequency module1aaccording to a first modification will be described below with reference toFIG.4. In the first modification, component elements similar to component elements of the high frequency module1according to the first embodiment will be denoted by the same signs as those in the first embodiment, and description of the similar component elements will be omitted in an appropriate manner.

Similarly to the high frequency module1according to the first embodiment, the high frequency module1aincludes a plurality of components. The plurality of components include the first low pass filter21, the second low pass filter22, the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. Similarly to the high frequency module1according to the first embodiment, the high frequency module1aincludes the signal input terminals91and92and the signal output terminals93and94that are illustrated inFIG.1.

The high frequency module1afurther includes, as illustrated inFIG.4, the mounting substrate100, the plurality of (in the example illustrated in the drawing, two) external connection terminals200, a first resin layer120as the resin layer120, a second resin layer125, the shield layer110, and a plurality of (in the example illustrated in the drawing, two) connection terminals130.

The switch IC800and the plurality of connection terminals130are disposed on the second main surface102of the mounting substrate100(seeFIG.4). That is, at least part of the plurality of components is disposed on the first main surface101of the mounting substrate100.

The plurality of connection terminals130are columnar electrodes. The plurality of connection terminals130are electrically connected to components disposed at the mounting substrate100and the conductive layer of the mounting substrate100, with via conductors or other components provided at the mounting substrate100interposed therebetween.

The second resin layer125is disposed on the second main surface102of the mounting substrate100. A part of the second resin layer125that is near the second main surface102of the mounting substrate100covers part of each of the plurality of electronic components mounted on the second main surface102of the mounting substrate100and the plurality of connection terminals130. The second resin layer125is formed in such a manner that a tip surface of each of the plurality of connection terminals130is exposed. The second resin layer125includes resin (for example, epoxy resin). The second resin layer125may include a filler as well as resin. The second resin layer125may be made of the same material as the material of the first resin layer120or may be made of a material different from the material of the first resin layer120.

The plurality of external connection terminals200include the first antenna terminal11, the second antenna terminal12, the one or more ground terminals, the signal input terminals91and92, and the signal output terminals93and94. The one or more ground terminals are connected to the ground layer of the mounting substrate100, as described above. The ground layer is a circuit ground of the high frequency module1a, and the plurality of electronic components of the high frequency module1ainclude an electronic component connected to the ground layer. The plurality of external connection terminals200are disposed on a surface1251that is farther away from the mounting substrate100, out of two surfaces of the second resin layer125that are opposite to each other in the thickness direction D1of the mounting substrate100. Specifically, the plurality of external connection terminals200are disposed on the surface1251immediately below the plurality of connection terminals130. The plurality of external connection terminals200are electrically connected to the plurality of connection terminals130in a one-to-one relationship on the surface1251.

As in the first embodiment, the shield layer110covers the main surface121of the first resin layer120that is far away from the mounting substrate100, the outer peripheral surface123of the resin layer120, and the outer peripheral surface103of the mounting substrate100. Furthermore, the shield layer110covers at least part of an outer peripheral surface126of the second resin layer125. In a fifth modification, the shield layer110covers at least part of the outer peripheral surface126of the second resin layer125. The shield layer110is electrically connected to the ground terminal of the mounting substrate100.

Also in the first modification, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

(4.2) Second Modification

A high frequency module1baccording to a second modification will be described with reference toFIG.5. Regarding the high frequency module1baccording to the second modification, component elements similar to component elements of the high frequency module1aaccording to the first modification will be denoted by the same signs as those in the first modification, and description of the similar component elements will be omitted in an appropriate manner.

The high frequency module1baccording to the second modification is different from the high frequency module1aaccording to the first modification in that external connection terminals200as the plurality of external connection terminals200are ball bumps250. Furthermore, the high frequency module1baccording to the second modification is different from the high frequency module1aaccording to the first modification in that the high frequency module1bdoes not include the second resin layer125of the high frequency module1aaccording to the first modification. The high frequency module1baccording to the second modification may include an under fill part provided in the space between the switch IC800and the second main surface102of the mounting substrate100.

The ball bumps250that are the plurality of external connection terminals200are made of, for example, gold, copper, or solder.

Some of the plurality of external connection terminals200may be external connection terminals200formed as the ball bumps250and the other external connection terminals200may be external connection terminals200formed in a rectangular column shape.

Also in the second modification, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

(4.3) Third Modification

Although the first transmission-system component is the first filter51and the second transmission-system component is the second filter52in the first embodiment, the first transmission-system component and the second transmission-system component are not necessarily the first filter51and the second filter52, respectively.

The first transmission-system component may be the first power amplifier81, and the second transmission-system component may be the second power amplifier82. Alternatively, the first transmission-system component may be the first filter51, and the second transmission-system component may be the second power amplifier82. Still alternatively, the first transmission-system component may be the first power amplifier81, and the second transmission-system component may be the second filter52. That is, the first transmission-system component is the first filter51or the first power amplifier81, and the second transmission-system component is the second filter52or the second power amplifier82.

(4.4) Fourth Modification

Although the third component is the third filter53in the first embodiment, the third component is not necessarily the third filter53.

The third component only needs to be configured not to perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component. For example, the third component may be a component connected to the third filter53. That is, the third component may be any component that does not perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component and is not disposed at a signal path through which the first transmission signal passes or a signal path through which the second transmission signal passes.

Although the top surface53bof the third filter53as the third component is connected to the shield layer110in the first embodiment, the top surface53bis not necessarily arranged as described above.

The top surface53bof the third filter53as the third component is not necessarily connected to the shield layer110.

Second Embodiment

The second embodiment is different from the first embodiment in that a reception-system component is used as the third component. Features of the second embodiment that are different from the first embodiment will be mainly described below with reference toFIGS.6and7. Component elements similar to component elements in the first embodiment will be denoted by the same signs as those in the first embodiment, and description of the similar component elements will be omitted in an appropriate manner.

In a high frequency module1caccording to the second embodiment, a plurality of components are disposed on the first main surface101of the mounting substrate100. The plurality of components include the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. The outer peripheral shape of each of the plurality of components in plan view from the thickness direction D1of the mounting substrate100is a quadrilateral shape.

The plurality of components include the first component, the second component, and the third component. The first component is the first transmission-system component used for transmission of the first transmission signal and is, for example, the first filter51. The second component is the second transmission-system component used for transmission of the second transmission signal and is, for example, the second filter52. The third component is a reception-system component used for reception of a reception signal and is, for example, the fourth filter54. The fourth filter54is a reception filter that allows a reception signal of Band 3 to be input to the second low noise amplifier84to pass therethrough.

In the second embodiment, the fourth filter54has two surfaces (top surface54band bottom surface54c) that are opposite to each other in the thickness direction of the fourth filter (the thickness direction D1of the mounting substrate100) (seeFIG.7).

In the second embodiment, the top surface51bof the first filter51and the top surface52bof the second filter52are connected to the shield layer110(seeFIG.7). Furthermore, in the second embodiment, the top surface54bof the fourth filter54is connected to the shield layer110(seeFIG.7).

In the second embodiment, the fourth filter54is disposed between the first filter51and the second filter52in plan view from the thickness direction D1of the mounting substrate100(seeFIG.6). In the second embodiment, the first filter51, the second filter52, and the fourth filter54are arranged in such a manner that the fourth filter54is disposed between the first filter51and the second filter52along the direction D2that is orthogonal to (intersects) the thickness direction D1.

More particularly, the first filter51, the second filter52, and the fourth filter54are arranged along a short side of the first filter51in plan view from the thickness direction D1of the mounting substrate100. Furthermore, the first filter51, the second filter52, and the fourth filter54are arranged along a short side of the second filter52in plan view from the thickness direction D1of the mounting substrate100. Moreover, the first filter51, the second filter52, and the fourth filter54are arranged along a short side of the fourth filter54in plan view from the thickness direction D1of the mounting substrate100. That is, in the second embodiment, the first filter51, the second filter52, and the fourth filter54are arranged along the short sides of the first filter51, the second filter52, and the fourth filter54.

The input terminal51aof the first filter51is arranged near the side51dthat is closer to the fourth filter54, out of the two sides51dand51eof the first filter51that intersect the direction (direction D2) along which the first filter51, the second filter52, and the fourth filter54are arranged.

The input terminal52aof the second filter52is arranged near the side52dthat is closer to the fourth filter54, out of the two sides52dand52eof the second filter52that intersect the direction (direction D2) along which the first filter51, the second filter52, and the fourth filter54are arranged.

In the second embodiment, the reception-system component as the third component is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100. Thus, compared to the case where the first transmission-system component and the second transmission-system component are adjacent to each other, mutual influence of heat generation at the first transmission-system component and the second transmission-system component is small. Consequently, in the high frequency module1caccording to the second embodiment, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

The first and second modifications of the first embodiment may be applied to the second embodiment. That is, in the second embodiment, a component may be disposed on the second main surface102of the mounting substrate100.

Furthermore, the third modification of the first embodiment may be applied to the second embodiment. That is, as in the first embodiment, the first transmission-system component is the first filter51or the first power amplifier81and the second transmission-system component is the second filter52or the second power amplifier82in the second embodiment.

Furthermore, although the third component is the fourth filter54in the second embodiment, the third component is not necessarily the fourth filter54. The third component may be any component that operates at the time of reception and may be a component (for example, the switch IC800) that is other than the fourth filter54and is disposed at, for example, a path through which a reception signal of Band 3 passes.

Furthermore, although the top surface54bof the fourth filter54as the third component is connected to the shield layer110in the second embodiment, the top surface54bis not necessarily arranged as described above. The top surface54bof the fourth filter54as the third component is not necessarily connected to the shield layer110.

Third Embodiment

A third embodiment is different from the second embodiment in that the first switch30, which is a reception-system component, is used as the third component. Features of the third embodiment that are different from the second embodiment will be mainly described below with reference toFIGS.8and9. Component elements similar to component elements in the first and second embodiments will be denoted by the same signs as those in the first and second embodiments, and description of the similar component elements will be omitted in an appropriate manner.

In a high frequency module1daccording to the third embodiment, a plurality of components are disposed on the first main surface101of the mounting substrate100. The plurality of components include the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. The outer peripheral shape of each of the plurality of components in plan view from the thickness direction D1of the mounting substrate100is a quadrilateral shape.

The plurality of components include the first component, the second component, and the third component. The first component is the first transmission-system component used for transmission of the first transmission signal and is, for example, the first filter51. The second component is the second transmission-system component used for transmission of the second transmission signal and is, for example, the second filter52. The third component is the reception-system component used for reception of a reception signal and is, for example, the first switch30. At the time of reception of a signal of Band 3, the first switch30allows the reception signal of Band 3 to pass therethrough.

In the third embodiment, the first switch30has two surfaces (top surface30band bottom surface30c) that are opposite to each other in the thickness direction of the first switch30(the thickness direction D1of the mounting substrate100) (seeFIG.9).

In the third embodiment, the top surface51bof the first filter51and the top surface52bof the second filter52are connected to the shield layer110(seeFIG.9). Furthermore, in the third embodiment, the top surface30bof the first switch30is connected to the shield layer110(seeFIG.9).

In the third embodiment, the first switch30is disposed between the first filter51and the second filter52in plan view from the thickness direction D1of the mounting substrate100(seeFIG.8). In the third embodiment, the first filter51, the second filter52, and the first switch30are arranged in such a manner that the first switch30is disposed between the first filter51and the second filter52along the direction D2that is orthogonal to (intersects) the thickness direction D1.

More particularly, the first filter51, the second filter52, and the first switch30are arranged along a short side of the first filter51in plan view from the thickness direction D1of the mounting substrate100. Furthermore, the first filter51, the second filter52, and the first switch30are arranged along a short side of the second filter52in plan view from the thickness direction D1of the mounting substrate100. Moreover, the first filter51, the second filter52, and the first switch30are arranged along a short side of the first switch30in plan view from the thickness direction D1of the mounting substrate100. That is, in the third embodiment, the first filter51, the second filter52, and the first switch30are arranged along the short sides of the first filter51, the second filter52, and the first switch30.

The input terminal51aof the first filter51is arranged near the side51dthat is closer to the first switch30, out of the two sides51dand51eof the first filter51that intersect the direction (direction D2) along which the first filter51, the second filter52, and the first switch30are arranged.

The input terminal52aof the second filter52is arranged near the side52dthat is closer to the first switch30, out of the two sides52dand52eof the second filter52that intersect the direction (direction D2) along which the first filter51, the second filter52, and the first switch30are arranged.

According to the third embodiment, the first switch30as the third component is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100. Thus, compared to the case where the first transmission-system component and the second transmission-system component are adjacent to each other, mutual influence of heat generation at the first transmission-system component and the second transmission-system component is small. Consequently, in the high frequency module1daccording to the third embodiment, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

The first and second modifications of the first embodiment may be applied to the third embodiment. That is, in the third embodiment, a component may be disposed on the second main surface102of the mounting substrate100.

Furthermore, the third modification of the first embodiment may be applied to the third embodiment. That is, as in the first embodiment, the first transmission-system component is the first filter51or the first power amplifier81and the second transmission-system component is the second filter52or the second power amplifier82in the third embodiment.

Furthermore, although the top surface30bof the first switch30as the third component is connected to the shield layer110in the third embodiment, the top surface30bis not necessarily arranged as described above. The top surface30bof the first switch30as the third component is not necessarily connected to the shield layer110.

Fourth Embodiment

A fourth embodiment is different from the first embodiment in that a matching circuit is used as the third component. Features of the fourth embodiment that are different from the first embodiment will be mainly described below with reference toFIGS.10and11. Component elements similar to component elements in the first to third embodiments will be denoted by the same signs as those in the first to third embodiments, and description of the similar component elements will be omitted in an appropriate manner.

In a high frequency module1eaccording to the fourth embodiment, a plurality of components are disposed on the first main surface101of the mounting substrate100. The plurality of components include the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. The outer peripheral shape of each of the plurality of components in plan view from the thickness direction D1of the mounting substrate100is a quadrilateral shape.

The plurality of components include the first component, the second component, and the third component. The first component is the first transmission-system component used for transmission of the first transmission signal and is, for example, the first filter51. The second component is the second transmission-system component used for transmission of the second transmission signal and is, for example, the second filter52. The third component is a matching circuit that does not perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component and is, for example, the third matching circuit43.

In the fourth embodiment, the top surface51bof the first filter51and the top surface52bof the second filter52are connected to the shield layer110(seeFIG.11).

In the fourth embodiment, the third matching circuit43is disposed between the first filter51and the second filter52in plan view from the thickness direction D1of the mounting substrate100(seeFIG.10). In the fourth embodiment, the first filter51, the second filter52, and the third matching circuit43are arranged in such a manner that the third matching circuit43is disposed between the first filter51and the second filter52along the direction D2that is orthogonal to (intersects) the thickness direction D1.

More particularly, the first filter51, the second filter52, and the third matching circuit43are arranged along a short side of the first filter51in plan view from the thickness direction D1of the mounting substrate100. Furthermore, the first filter51, the second filter52, and the third matching circuit43are arranged along a short side of the second filter52in plan view from the thickness direction D1of the mounting substrate100. Moreover, the first filter51, the second filter52, and the third matching circuit43are arranged along a short side of the third matching circuit43in plan view from the thickness direction D1of the mounting substrate100. That is, in the third embodiment, the first filter51, the second filter52, and the third matching circuit43are arranged along the short sides of the first filter51, the second filter52, and the third matching circuit43.

The input terminal51aof the first filter51is arranged near the side51dthat is closer to the third matching circuit43, out of the two sides51dand51eof the first filter51that intersect the direction (direction D2) along which the first filter51, the second filter52, and the first switch30are arranged.

The input terminal52aof the second filter52is arranged near the side52dthat is closer to the third matching circuit43, out of the two sides52dand52eof the second filter52that intersect the direction (direction D2) along which the first filter51, the second filter52, and the first switch30are arranged.

The plurality of external connection terminals200of the high frequency module1eaccording to the fourth embodiment include a ground terminal201that is connected to the ground. One end of the third matching circuit43is electrically connected to the ground terminal201with a path (ground path150) connected to the ground terminal201interposed therebetween. In other words, the ground terminal201is electrically connected to the one end of the third matching circuit43. The ground path150is a path including one or more via conductors and one or more ground layers.

The ground terminal201is disposed between the first component and the second component in plan view from the thickness direction D1of the mounting substrate100.

According to the fourth embodiment, a matching circuit (for example, the third matching circuit43) as the third component is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100. Thus, compared to the case where the first transmission-system component and the second transmission-system component are adjacent to each other, mutual influence of heat generation at the first transmission-system component and the second transmission-system component is small. Consequently, in the high frequency module1eaccording to the fourth embodiment, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

The first and second modifications of the first embodiment may be applied to the fourth embodiment. That is, in the fourth embodiment, components may be disposed on the second main surface102of the mounting substrate100.

Furthermore, the third modification of the first embodiment may be applied to the fourth embodiment. That is, as in the first embodiment, the first transmission-system component is the first filter51or the first power amplifier81and the second transmission-system component is the second filter52or the second power amplifier82in the fourth embodiment.

Furthermore, although the third matching circuit43as the third component is disposed between the first transmission-system component and the second transmission-system component in the fourth embodiment, the third matching circuit43is not necessarily arranged as described above. In the fourth embodiment, the third component only needs to be a matching circuit that does not perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component. Alternatively, the third component may be a matching circuit that operates at the time of transmission, for example, any one of the fourth matching circuit44, the seventh matching circuit73, and the eighth matching circuit74. That is, the third component only needs to be a matching circuit that is provided at a path that is different from a path through which the first transmission signal passes and a path through which the second transmission signal passes.

Furthermore, although one end of the matching circuit (third matching circuit43) as the third component is connected to the ground, that is, shunt connection is employed in the fourth embodiment, the matching circuit is not necessarily arranged as described above. The matching circuit as the third component may be connected in series between two components for which the matching circuit performs impedance matching.

Fifth Embodiment

A fifth embodiment is different from the first embodiment in that the third component includes a through-hole via. Features of the fifth embodiment that are different from the first embodiment will be mainly described below with reference toFIG.12. Component elements similar to component elements in the first to fourth embodiments will be denoted by the same signs as those in the first to fourth embodiments, and description of the similar component elements will be omitted in an appropriate manner. In a high frequency module if according to the fifth embodiment, a plurality of components are disposed on the first main surface101of the mounting substrate100. The plurality of components include the first switch30, the first matching circuit41, the second matching circuit42, the third matching circuit43, the fourth matching circuit44, the first filter51, the second filter52, the third filter53, the fourth filter54, the second switch61, the third switch62, the fifth matching circuit71, the sixth matching circuit72, the seventh matching circuit73, the eighth matching circuit74, the first power amplifier81, the second power amplifier82, and the switch IC800. The outer peripheral shape of each of the plurality of components in plan view from the thickness direction D1of the mounting substrate100is a quadrilateral shape.

The plurality of components include the first component, the second component, and the third component. The first component is the first transmission-system component used for transmission of the first transmission signal and is, for example, the first filter51. The second component is the second transmission-system component used for transmission of the second transmission signal and is, for example, the second filter52. The third component is a component that does not perform a simultaneous transmission operation together with the first transmission-system component and the second transmission-system component and is, for example, the third filter53.

The third filter53includes a ground terminal531that is electrically connected to the ground. The third filter53includes a through-hole via532. The through-hole via532penetrates between the top surface53band the bottom surface53cof the third filter. That is, the through-hole via532is provided at the third filter53along the thickness direction D1of the mounting substrate100. One end of the through-hole via532is electrically connected to the ground terminal531, and the other end of the through-hole via532is connected to the shield layer110. Thus, the ground terminal531is electrically connected to the shield layer110. The through-hole via532is, for example, a silicon through-hole via.

According to the fifth embodiment, the third component is disposed between the first transmission-system component and the second transmission-system component in plan view from the thickness direction D1of the mounting substrate100. Thus, compared to the case where the first transmission-system component and the second transmission-system component are adjacent to each other, mutual influence of heat generation at the first transmission-system component and the second transmission-system component is small. Consequently, in the high frequency module if according to the fifth embodiment, even when the first transmission-system component and the second transmission-system component that are connected to the shield layer110(ground electrode) perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed. Furthermore, with the third component (in this example, the third filter53) including the through-hole via (through-hole via532), isolation between the first transmission-system component and the second transmission-system component can be prevented from decreasing.

The first and second modifications of the first embodiment may be applied to the fifth embodiment. That is, in the fifth embodiment, a component may be disposed on the second main surface102of the mounting substrate100.

Furthermore, the third modification of the first embodiment may be applied to the fifth embodiment. That is, as in the first embodiment, the first transmission-system component is the first filter51or the first power amplifier81and the second transmission-system component is the second filter52or the second power amplifier82in the fifth embodiment.

The fifth embodiment may be applied to the second and third embodiments. That is, at the reception-system component (for example, the fourth filter54or the first switch30) as the third component, a through-hole via that electrically connects a ground terminal of the reception-system component with the shield layer110may be provided.

Other Modifications

In each of the embodiments described above, the combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is the combination of Band 3 based on the 4G standards and n41 based on the 5G standards. However, the combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is not limited to the combination described above. The combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of the combination of Band 1 based on the 4G standards and n40 based on the 5G standards, the combination of Band 3 based on the 4G standards and n40 based on the 5G standards, the combination of Band 1 based on the 4G standards and n41 based on the 5G standards, the combination of Band 3 based on the 4G standards and n41 based on the 5G standards, the combination of Band 39 based on the 4G standards and n41 based on the 5G standards, the combination of Band 66 based on the 4G standards and n41 based on the 5G standards, and the combination of Band 25 based on the 4G standards and n41 based on the 5G standards. Furthermore, the combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is not limited to the combination of a frequency band based on the 4G standards and a frequency band based on the 5G standards. The combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal may be the combination of frequency bands based on the 4G standards or the combination of frequency bands based on the 5G standards. For example, combinations of 4G frequency bands include the combination of Band 1 and Band 3, the combination of Band 1 and Band 28, the combination of Band 1 and Band 77, the combination of Band 1 and Band 78, the combination of Band 3 and Band 20, the combination of Band 3 and Band 28, the combination of Band 3 and Band 41, the combination of Band 3 and Band 78, the combination of Band 7 and Band 78, the combination of Band 8 and Band 78, the combination of Band 20 and Band 78, the combination of Band 28 and Band 77, and the combination of Band 28 and Band 78.

Furthermore, in the embodiments, the high frequency modules1to if each includes a plurality of antenna terminals (first antenna terminal11and second antenna terminal12). However, the high frequency modules1to if do not necessarily include a plurality of antenna terminals. Each of the high frequency modules1to if may include a single antenna terminal. That is, each of the high frequency modules1to if may transmit the first transmission signal and the second transmission signal via a single antenna.

Furthermore, in the embodiments, each of the high frequency modules1to if is configured to perform transmission of two transmission signals as simultaneous transmission. However, each of the high frequency modules1to if is not necessarily configured to perform simultaneous transmission of two transmission signals. Each of the high frequency modules1to if may be configured to perform simultaneous transmission of three or more signals. For example, for simultaneous transmission of three signals, a component that is not used for a simultaneous transmission operation for three signals is disposed between two transmission-system components that allow two of the three signals to pass therethrough. That is, a component different from each of the components that allow corresponding three signals to pass therethrough is disposed between two transmission-system components that allow two of the three signals to pass therethrough. Alternatively, a reception-system component, that is, a reception filter used for reception of a reception signal, a switch, or the like, is disposed between two transmission-system components that allow two of the three signals to pass therethrough. Still alternatively, a matching circuit provided at a path different from each of the paths through which corresponding three signals pass is disposed between two transmission-system components that allow two of the three signals to pass therethrough.

Conclusion

As described above, according to a first aspect, a high frequency module (1;1a;1b;1e;1f) includes a mounting substrate (100), a plurality of components, a resin layer (120), and a ground electrode (for example, the shield layer110). The mounting substrate (100) has a first main surface (101) and a second main surface (102) that are opposite to each other. The plurality of components are disposed on the first main surface (101). The resin layer (120) covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer (120). The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter (51) and a first power amplifier (81) that are used for transmission of a first transmission signal. The second component is any one of a second filter (52) and a second power amplifier (82) that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. A top surface (for example, the top surface51b) of the first component and a top surface (for example, the top surface52b) of the second component are connected to the ground electrode. The first component and the second component are configured to be capable of performing simultaneous transmission. The third component is configured not to perform a simultaneous transmission operation together with the first component and the second component. The third component is disposed between the first component and the second component in plan view from a thickness direction (D1) of the mounting substrate (100).

With this arrangement, even when the first component and the second component that are connected to the ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

According to a second aspect, a high frequency module (1c;1d;1e;1f) includes a mounting substrate (100), a plurality of components, a resin layer (120), and a ground electrode (for example, the shield layer110). The mounting substrate (100) has a first main surface (101) and a second main surface (102) that are opposite to each other. The plurality of components are disposed on the first main surface (101). The resin layer (120) covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer (120). The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter (51) and a first power amplifier (81) that are used for transmission of a first transmission signal. The second component is any one of a second filter (52) and a second power amplifier (82) that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. The third component is a reception-system component that is used for reception of a reception signal. A top surface (for example, the top surface51b) of the first component and a top surface (for example, the top surface52b) of the second component are connected to the ground electrode. The first component and the second component are configured to be capable of performing simultaneous transmission. The reception-system component is disposed between the first component and the second component in plan view from a thickness direction (D1) of the mounting substrate (100).

With this arrangement, even when the first component and the second component that are connected to the ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

According to a third aspect, the high frequency module (1c;1d;1e;1f) according to the second aspect includes an antenna terminal (for example, the first antenna terminal11or the second antenna terminal12) and a switch IC (for example, the first switch30). The switch IC includes a switch for switching a connection destination for the antenna terminal. The reception-system component is the switch IC.

With this arrangement, since the switch IC is disposed between the first component and the second component, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

According to a fourth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to the first or second aspect, the third component is a reception filter (for example, the fourth filter54) that is used for reception of a reception signal.

With this arrangement, since the reception filter is disposed between the first component and the second component, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

According to a fifth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to fourth aspects, the third component includes a ground terminal (531) that is connected to a ground. The third component includes a through-hole via (532). The ground terminal (531) is connected to the ground electrode (shield layer110) with the through-hole via (532) interposed therebetween.

With this arrangement, even when the first component and the second component perform a simultaneous transmission operation, deterioration of characteristics caused by heat dissipation from the first component and the second component can be suppressed. Furthermore, due to connection between the third component and the ground electrode, isolation between the first component and the second component can be prevented from decreasing.

According to a sixth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to the first or second aspect, the third component is a matching circuit (for example, the third matching circuit43) that is provided at a path different from a path through which the first transmission signal passes and a path through which the second transmission signal passes.

With this arrangement, since the matching circuit is disposed between the first component and the second component, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics can be suppressed.

According to a seventh aspect, the high frequency module (1;1a;1b;1c;1d;1e;1f) according to the sixth aspect further includes a ground terminal (201). The ground terminal (201) is connected to one end of the matching circuit, disposed on the second main surface (102) of the mounting substrate (100), and connected to a ground. The ground terminal (201) is disposed between the first component and the second component in plan view from the thickness direction (D1) of the mounting substrate (100).

With this arrangement, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed. Furthermore, since the one end of the matching circuit as the third component is connected to the ground with the ground terminal (201) interposed therebetween, the isolation between the first component and the second component can be prevented from decreasing.

According to an eighth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to seventh aspects, a top surface of the third component (for example, the top surface53bof the third filter53) is connected to the ground electrode (shield layer110).

With this arrangement, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed.

According to a ninth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to eighth aspects, the first component, the second component, and the third component are arranged along a short side of the first component in plan view from the thickness direction (D1) of the mounting substrate (100). The third component is arranged in such a manner that a long side of the third component intersects a direction (for example, the direction D2) along the short side of the first component.

With this arrangement, since the third component is arranged in such a manner that the long side of the third component intersects the direction (for example, the direction D2) along the short side of the first component, heat conduction between the first component and the second component can be blocked. As a result, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed.

According to a tenth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to ninth aspects, the first component, the second component, and the third component are arranged along a short side of the second component in plan view from the thickness direction (D1) of the mounting substrate (100).

With this arrangement, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed.

According to an eleventh aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to tenth aspects, the first component includes an input terminal (for example, the input terminal51a) to which the first transmission signal is input. The input terminal of the first component is arranged near a side (for example, the side51d) that is closer to the third component, out of two sides (for example, the sides51dand51e) of the first component that intersect a direction (for example, the direction D2) along which the first component, the second component, and the third component are arranged.

With this arrangement, since the input terminal of the first component is arranged near the third component, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed.

According to a twelfth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to eleventh aspects, the second component includes an input terminal (for example, the input terminal52a) to which the second transmission signal is input. The input terminal of the second component is arranged near a side (for example, the side52d) that is closer to the third component, out of two sides (for example, the sides52dand52e) of the second component that intersect a direction (for example, the direction D2) along which the first component, the second component, and the third component are arranged.

With this arrangement, since the input terminal of the second component is arranged near the third component, even when the first component and the second component perform a simultaneous transmission operation, deterioration of the characteristics caused by heat dissipation from the first component and the second component can be suppressed.

According to a thirteenth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to twelfth aspects, the frequency band of the first transmission signal is a frequency band based on 4G standards. The frequency band of the second transmission signal is a frequency band based on 5G standards.

With this arrangement, in a simultaneous transmission operation using the frequency band based on the 4G standards and the frequency band based on the 5G standards, deterioration of the characteristics can be suppressed.

According to a fourteenth aspect, in the high frequency module (1;1a;1b;1c;1d;1e;1f) according to the thirteenth aspect, a combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of a combination of Band 1 and n40, a combination of Band 3 and n40, a combination of Band 1 and n41, a combination of Band 3 and n41, a combination of Band 39 and n41, a combination of Band 66 and n41, and a combination of Band 25 and n41.

With this arrangement, in a simultaneous transmission operation using any one of the combinations of the frequency bands mentioned above, deterioration of the characteristics can be suppressed.

According to a fifteenth aspect, a high frequency module (1;1a;1b;1e;1f) includes a mounting substrate (100), a plurality of components, a resin layer (120), and a ground electrode (for example, the shield layer110). The mounting substrate (100) has a first main surface (101) and a second main surface (102) that are opposite to each other. The plurality of components are disposed on the first main surface (101). The resin layer (120) covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer (120). The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter (51) and a first power amplifier (81) that are used for transmission of a first transmission signal. The second component is any one of a second filter (52) and a second power amplifier (82) that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. A top surface (for example, the top surface51b) of the first component and a top surface (for example, the top surface52b) of the second component are connected to the ground electrode. The third component is configured not to perform a simultaneous transmission operation together with the first component and the second component. The third component is disposed between the first component and the second component in plan view from a thickness direction (D1) of the mounting substrate (100). A combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of a combination of Band 1 based on 4G standards and n40 based on 5G standards, a combination of Band 3 based on the 4G standards and n40 based on the 5G standards, a combination of Band 1 based on the 4G standards and n41 based on the 5G standards, a combination of Band 3 based on the 4G standards and n41 based on the 5G standards, a combination of Band 39 based on the 4G standards and n41 based on the 5G standards, a combination of Band 66 based on the 4G standards and n41 based on the 5G standards, and a combination of Band 25 based on the 4G standards and n41 based on the 5G standards.

With this arrangement, even when the first component and the second component that are connected to the ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

According to a sixteenth aspect, a high frequency module (1c;1d;1e;1f) includes a mounting substrate (100), a plurality of components, a resin layer (120), and a ground electrode (for example, the shield layer110). The mounting substrate (100) has a first main surface (101) and a second main surface (102) that are opposite to each other. The plurality of components are disposed on the first main surface (101). The resin layer (120) covers at least part of the plurality of components. The ground electrode covers at least part of the resin layer (120). The plurality of components include a first component, a second component, and a third component. The first component is any one of a first filter (51) and a first power amplifier (81) that are used for transmission of a first transmission signal. The second component is any one of a second filter (52) and a second power amplifier (82) that are used for transmission of a second transmission signal of a frequency band different from a frequency band of the first transmission signal. The third component is a reception-system component that is used for reception of a reception signal. A top surface (for example, the top surface51b) of the first component and a top surface (for example, the top surface52b) of the second component are connected to the ground electrode. The reception-system component is disposed between the first component and the second component in plan view from a thickness direction (D1) of the mounting substrate (100). A combination of the frequency band of the first transmission signal and the frequency band of the second transmission signal is any one of a combination of Band 1 based on 4G standards and n40 based on 5G standards, a combination of Band 3 based on the 4G standards and n40 based on the 5G standards, a combination of Band 1 based on the 4G standards and n41 based on the 5G standards, a combination of Band 3 based on the 4G standards and n41 based on the 5G standards, a combination of Band 39 based on the 4G standards and n41 based on the 5G standards, a combination of Band 66 based on the 4G standards and n41 based on the 5G standards, and a combination of Band 25 based on the 4G standards and n41 based on the 5G standards.

With this arrangement, even when the first component and the second component that are connected to the ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

According to a seventeenth aspect, a communication apparatus (500) includes the high frequency module (1;1a;1b;1c;1d;1e;1f) according to any one of the first to sixteenth aspects and a signal processing circuit (501). The signal processing circuit (501) processes the first transmission signal and the second transmission signal that pass through the high frequency module (1;1a;1b;1c;1d;1e;1f).

With this arrangement, even when the first component and the second component that are connected to the ground electrode perform a simultaneous transmission operation, deterioration of characteristics can be suppressed.

REFERENCE SIGNS LIST