HIGH-FREQUENCY MODULE AND COMMUNICATION APPARATUS

Coupling between inductors is restrained, and the layout area of a substrate is also ensured. A high-frequency module includes a mounting substrate, a first inductor, a second inductor, at least one high-frequency component, a shield layer, and a conductive member. The mounting substrate has a main surface. The first inductor is located on a main surface side of the mounting substrate. The second inductor is located on the main surface side of the mounting substrate. The high-frequency component is located on the main surface side of the mounting substrate and between the first inductor and the second inductor. The shield layer is connected to the ground. The conductive member connects the high-frequency component and the shield layer. The conductive member is connected to a main surface of the high-frequency component, the main surface facing the shield layer.

BACKGROUND OF THE DISCLOSURE

Field of the Disclosure

The present disclosure typically relates to a high-frequency module and a communication apparatus and in more detail relates to a high-frequency module including a plurality of inductors and a communication apparatus including the high-frequency module.

Description of the Related Art

To date, a front-end module (high-frequency module) including a substrate, a filter portion (high-frequency component) provided to the substrate, and a plurality of inductors provided to the substrate is known (for example, see Patent Document 1). In the front-end module described in Patent Document 1, a filter portion and a plurality of inductors are provided to a main surface serving as one of surfaces of a substrate.Patent Document 1: International Publication No. 2018/043862

BRIEF SUMMARY OF THE DISCLOSURE

In the technical field of a high-frequency module, there is a desire for restraining coupling between inductors and also ensuring a substrate layout area.

It is a possible benefit of the present disclosure to provide a high-frequency module and a communication apparatus that enable coupling between inductors to be restrained and also a substrate layout area to be ensured.

A high-frequency module according to an aspect of the present disclosure includes a mounting substrate, a first inductor, a second inductor, at least one high-frequency component, a shield layer, and a conductive member. The mounting substrate has a main surface. The first inductor is located on a main surface side of the mounting substrate. The second inductor is located on the main surface side of the mounting substrate. The high-frequency component is located on the main surface side of the mounting substrate and between the first inductor and the second inductor. The shield layer is connected to the ground. The conductive member connects the high-frequency component and the shield layer. The conductive member is connected to a main surface of the high-frequency component, the main surface facing the shield layer.

A communication apparatus according to an aspect of the present disclosure includes the high-frequency module and a signal processing circuit. The signal processing circuit processes a reception signal from an antenna and a transmission signal to the antenna.

With the high-frequency module and the communication apparatus according to the aspects of the present disclosure, coupling between the inductors may be restrained, and a substrate layout area may also be ensured.

DETAILED DESCRIPTION OF THE DISCLOSURE

Hereinafter, a high-frequency module and a communication apparatus according to Embodiments 1 and 2 will be described with reference to the drawings.FIGS. 2A to 12Breferenced in the following embodiments and the like are each a schematic view, and the size, the depth, and the ratio of the size, and the depth of each component do not necessarily reflect an actual scale ratio. In addition, inFIGS. 2B, 3B, 7, 8, 11, and 12B, the illustration of any bump is omitted.

The configuration of a high-frequency module1according to Embodiment 1 will be described with reference to the drawings.

As illustrated inFIG. 1, the high-frequency module1according to Embodiment 1 includes a power amplifier11and a low-noise amplifier21. The high-frequency module1includes a plurality of (two, in the illustrated example) duplexers32A and32B and a filter33. The duplexer32A includes a transmission filter12A and a reception filter22A. The duplexer32B includes a transmission filter12B and a reception filter22B.

Further, the high-frequency module1includes an output matching circuit13, an input matching circuit23, and a plurality of (two, in the illustrated example) matching circuits71A and71B. The high-frequency module1also includes a first switch4, a second switch5, a third switch6, and a plurality of external connection terminals8. As illustrated inFIGS. 2A and 2B, the high-frequency module1also includes a mounting substrate9, a first resin layer101, a second resin layer102, a shield layer103, and a conductive member20.

Note that, in the following description, in a case where the duplexers32A and32B do not need to be particularly discriminated, each of the duplexers32A and32B is also referred to as “a duplexer32”. In addition, in a case where transmission filters12A and12B do not need to be particularly discriminated, each of the transmission filters12A and12B is also referred to as “a transmission filter12”. Further, in a case where reception filters22A and22B do not need to be particularly discriminated, each of the reception filters22A and22B is also referred to as “a reception filter22”. In addition, in a case where the matching circuits71A and71B do not need to be particularly discriminated, each of the matching circuits71A and71B is also referred to as “a matching circuit71”.

As illustrated inFIG. 1, the high-frequency module1is used for, for example, a communication apparatus300. The communication apparatus300is, for example, a cellular phone such as a smartphone. Note that the communication apparatus300is not limited to the cellular phone and may be, for example, a wearable terminal such as a smart watch. The high-frequency module1is, for example, a module that can support a fourth-generation mobile communication (4G) standard, a fifth-generation mobile communication (5G) standard, and the like. The 4G standard is, for example, the 3GPP long term evolution (LTE) standard. The 5G standard is, for example, the 5G new radio (NR). The high-frequency module1is a module that can support carrier aggregation and dual connectivity. That is, the high-frequency module1is a module that can support communications simultaneously performed.

The high-frequency module1performs communication in a plurality of communication bands. In more detail, the high-frequency module1transmits a transmission signal in each of the plurality of communication bands and receives a reception signal in each of the plurality of communication bands. Specifically, the high-frequency module1performs communication in a first communication band and communication in a second communication band. In more detail, the high-frequency module1transmits a transmission signal in the first communication band and receives a reception signal in the first communication band. In addition, the high-frequency module1transmits a transmission signal in the second communication band and receives a reception signal in the second communication band.

The high-frequency module1has a plurality of (two, in the illustrated example) transmission paths T1to transmit transmission signals in the plurality of communication bands. The plurality of transmission paths T1include a first transmission path T11and a second transmission path T12. A first transmission signal in the first communication band passes through the first transmission path T11, and a second transmission signal in the second communication band passes through the second transmission path T12.

The high-frequency module1has a plurality of (two, in the illustrated example) reception paths T2to receive reception signals in the plurality of communication bands. The plurality of reception paths T2include a first reception path T21and a second reception path T22. A first reception signal in the first communication band passes through the first reception path T21, and a second reception signal in the second communication band passes through the second reception path T22.

The transmission signals and the reception signals are, for example, frequency division duplex (FDD) signals. The FDD is a radio communication technology by which transmission and reception are performed in radio communication in such a manner as to be assigned respective different frequency bands. Note that the transmission signals and the reception signals are not limited to the FDD signals and may be time division duplex (TDD) signals. The TDD is a radio communication technology by which the transmission and the reception in the radio communication are assigned the same frequency band and are changed over based on time.

Hereinafter, the circuit configuration of the high-frequency module1according to Embodiment 1 will be described with reference to the drawings. A case where the transmission signals and the reception signals are FDD signals will herein be described.

(2.1) Power Amplifier

The power amplifier11illustrated inFIG. 1is an amplifier that amplifies the amplitude of a transmission signal. The power amplifier11is disposed between the input terminal82and the output matching circuit13on one of the transmission paths T1that connects an antenna terminal81(described later) and an input terminal82(described later). The power amplifier11is connected to an external circuit (for example, a signal processing circuit301) with the input terminal82interposed therebetween. The power amplifier11is also connected to the output matching circuit13. The power amplifier11is controlled, for example, by a controller14.

The low-noise amplifier21illustrated inFIG. 1is an amplifier that amplifies the amplitude of a reception signal with low noise. The low-noise amplifier21is disposed between the input matching circuit23and the output terminal83on one of the reception paths T2that connects the antenna terminal81and an output terminal83(described later). The low-noise amplifier21is connected to the external circuit (for example, the signal processing circuit301) with the output terminal83interposed therebetween. The low-noise amplifier21is also connected to the input matching circuit23. The low-noise amplifier21is controlled, for example, by the signal processing circuit301(described later).

(2.3) Transmission Filters

The transmission filters12A and12B illustrated inFIG. 1are each a transmission filter for a communication band for which a transmission signal is allowed to pass. The transmission filters12A and12B are each disposed between the output matching circuit13and the antenna terminal81on a corresponding one of the transmission paths T1. In more detail, the transmission filter12A is disposed on the first transmission path T11, and the transmission filter12B is disposed on the second transmission path T12. The transmission filters12A and12B allow to pass transmission signals in the respective transmission bands in the aforementioned communication band among high-frequency signals amplified by the power amplifier11.

The reception filters22A and22B illustrated inFIG. 1are each a reception filter for a communication band for which a reception signal is allowed to pass. The reception filters22A and22B are each disposed between the antenna terminal81and the input matching circuit23on a corresponding one of the reception paths T2. In more detail, the reception filter22A is disposed on the first reception path T21, and the reception filter22B is disposed on the second reception path T22. The reception filters22A and22B each allow to pass reception signals in the respective reception bands in the aforementioned communication band among high-frequency signals inputted from the antenna terminal81.

The filter33illustrated inFIG. 1is disposed on the output side of the plurality of transmission filters12and on the input side of the plurality of reception filters22and allows the transmission signals (the first transmission signal and the second transmission signal) and the reception signals (the first reception signal and the second reception signal) to pass therethrough. In more detail, the filter33is disposed between the antenna terminal81and the first switch4. The filter33includes, for example, a plurality of inductors (not illustrated) and a capacitor (not illustrated). The filter33may be an integrated passive device (IPD) including the plurality of inductors and the capacitor. Note that the filter33is included in a diplexer.

(2.6) Output Matching Circuit

As illustrated inFIG. 1, the output matching circuit13is disposed between the power amplifier11and each of the transmission filters12A and12B on a corresponding one of the transmission paths T1. The output matching circuit13is a circuit for performing impedance matching between the power amplifier11and each of the transmission filters12A and12B.

The output matching circuit13includes, for example, a plurality of inductors (not illustrated) and a plurality of capacitors (not illustrated). Note that the configuration of the output matching circuit13is not limited to the configuration in which the plurality of inductors and the plurality of capacitors are included and may be, for example, a configuration in which only the plurality of inductors is included or a configuration in which only the plurality of capacitors is included. Alternatively, the configuration of the output matching circuit13may be a configuration in which only one inductor is included or a configuration in which only one capacitor is included.

(2.7) Input Matching Circuit

As illustrated inFIG. 1, the input matching circuit23is disposed between each of the reception filters22A and22B and the low-noise amplifier21on a corresponding one of the reception paths T2. The input matching circuit23is a circuit for performing impedance matching between each of the reception filters22A and22B and the low-noise amplifier21.

The input matching circuit23has a configuration in which, for example, one inductor (not illustrated) is included. Note that the configuration of the input matching circuit23is not limited to the configuration in which one inductor is included and may be a configuration in which, for example, a plurality of inductors are included or a configuration in which the plurality of inductors and a plurality of capacitors are included. In sum, the input matching circuit23includes at least one inductor.

As illustrated inFIG. 1, the matching circuit71A disposed between the transmission filter12A and the first switch4on a corresponding one of the transmission paths T1and between the first switch4and the reception filter22A on a corresponding one of the reception paths T2. In more detail, the matching circuit71A is disposed on the first transmission path T11and on the first reception path T21. In addition, as illustrated inFIG. 1, the matching circuit71B is disposed between the first switch4and the transmission filter12B on a corresponding one of the transmission paths T1and between the first switch4and the reception filter22B on a corresponding one of the reception paths T2. In more detail, the matching circuit71B is disposed on the second transmission path T12and on the second reception path T22.

Each of the matching circuits71A and71B has a configuration in which, for example, one inductor (not illustrated) is included. The inductor of each of the matching circuits71A and71B is disposed, for example, between a node and the ground on the corresponding transmission path T1. Note that the configuration of each of the matching circuits71A and71B is not limited to the configuration in which one inductor is included and may be, for example, a configuration in which a plurality of inductors are included or a configuration in which the plurality of inductors and a plurality of capacitors are included.

As illustrated inFIG. 1, the first switch4is a switch for switching between paths (the transmission path T1and the reception path T2) for connection to an antenna310. The first switch4has a common terminal40and two selective terminals41and42. The common terminal40is connected to the antenna terminal81. The selective terminal41is connected to the matching circuit71A. The selective terminal42is connected to the matching circuit71B.

The first switch4is a switch, for example, that allows at least one or more of the two selective terminals41and42to be selected for the common terminal40. Note that the first switch4is a switch that allows, for example, the connection on a one-to-one basis and on a one-to-many basis. The first switch4is, for example, a switch integrated circuit (IC). The first switch4is controlled, for example, by the controller14. The first switch4performs switching between the states of connection between the common terminal40and the two selective terminals41and42in accordance with a control signal from the controller14.

As illustrated inFIG. 1, the second switch5is a switch for switching between the reception paths T2(the first reception path T21and the second reception path T22). The second switch5has a common terminal50and two selective terminals51and52. The common terminal50is connected to the low-noise amplifier21with the input matching circuit23interposed therebetween. The selective terminal51is connected to the output terminal of the reception filter22A (the reception terminal of the duplexer32A). The selective terminal52is connected to the output terminal of the reception filter22B (the reception terminal of the duplexer32B).

The second switch5is a switch, for example, that allows at least one or more of the two selective terminals51and52to be connected to the common terminal50. Note that the second switch5is a switch that allows, for example, the connection on a one-to-one basis and on a one-to-many basis. The second switch5is, for example, a switch IC. The second switch5is controlled, for example, by the controller14. The second switch5performs switching between the states of connection between the common terminal50and the two selective terminals51and52in accordance with a control signal from the controller14.

As illustrated inFIG. 1, the third switch6is a switch for switching between the transmission paths T1(the first transmission path T11and the second transmission path T12). The third switch6has a common terminal60and two selective terminals61and62. The common terminal60is connected to the power amplifier11with the output matching circuit13interposed therebetween. The selective terminal61is connected to the input terminal of the transmission filter12A (the transmission terminal of the duplexer32A). The selective terminal62is connected to the input terminal of the transmission filter12B (the transmission terminal of the duplexer32B).

The third switch6is, for example, a switch that allows at least one or more of the two selective terminals61and62to be connected to the common terminal60. Note that the third switch6is a switch that allows, for example, the connection on a one-to-one basis and on a one-to-many basis. The third switch6is, for example, a switch IC. The third switch6is controlled, for example, by the controller14. The third switch6performs switching between the states of connection between the common terminal60and the two selective terminals61and62in accordance with a control signal from the controller14.

The controller14is connected to the power amplifier11. The controller14is connected to the signal processing circuit301with a plurality of (four, in the illustrated example) control terminals84interposed therebetween. The plurality of control terminals84are each a terminal for inputting, to the controller14, a control signal from the external circuit (for example, the signal processing circuit301). The controller14controls the power amplifier11based on the control signals acquired from the plurality of control terminals84. The plurality of control terminals84support, for example, the mobile industry processor interface (MIPI) standard.

The controller14controls the power amplifier11in accordance with a control signal from a RF-signal processing circuit302. Specifically, the controller14receives the control signal from the RF-signal processing circuit302and, for example, supplies bias current to the power amplifier11in accordance with the control signal.

The controller14is also connected to the first switch4, the second switch5, and the third switch6and also controls the first switch4, the second switch5, and the third switch6based on the control signals described above.

(2.11) External Connection Terminals

As illustrated inFIG. 1, the plurality of external connection terminals8include the antenna terminal81, the input terminal82, the output terminal83, and the plurality of (four, in the illustrated example) control terminals84. The antenna terminal81is a terminal to which the antenna310is connected. The input terminal82and the output terminal83are connected to the signal processing circuit301. The input terminal82is a terminal through which a high-frequency signal (transmission signal) from the external circuit is inputted to the high-frequency module1. The output terminal83is a terminal through which a high-frequency signal (reception signal) from the low-noise amplifier21is outputted to the external circuit. The plurality of control terminals84are each a terminal for inputting, to the controller14, the control signal from the external circuit (for example, the signal processing circuit301).

Hereinafter, the structure of the high-frequency module1according to Embodiment 1 will be described with reference to the drawings.

As illustrated inFIGS. 2A and 2B, the high-frequency module1includes the mounting substrate9, a plurality of circuit elements, and the plurality of (three, in the illustrated example) external connection terminals8. The high-frequency module1also includes the first resin layer101, the second resin layer102, the shield layer103, and the conductive member20. The high-frequency module1includes, as the plurality of circuit elements, the power amplifier11, the low-noise amplifier21, the duplexers32A and32B, the filter33, the output matching circuit13, the input matching circuit23, the matching circuits71A and71B, the first to third switches4to6, and the controller14. Note that inFIGS. 2A and 2B, the illustration of the low-noise amplifier21, the filter33, and the controller14among the plurality of circuit elements is omitted.

The high-frequency module1is electrically connectable to an external board (not illustrated). The external board corresponds to, for example, the mother board of a cellular phone, a communication apparatus, and the like. Note that the case where the high-frequency module1is electrically connectable to the external board includes not only a case where the high-frequency module1is mounted directly on the external board but also a case where the high-frequency module1is mounted indirectly on the external board. In addition, the case where the high-frequency module1is mounted indirectly on the external board is, for example, a case where the high-frequency module1is mounted on a different high-frequency module mounted on the external board.

As illustrated inFIGS. 2A and 2B, the mounting substrate9has a first main surface91and a second main surface92. The first main surface91and the second main surface92are opposite from each other in a depth direction D1of the mounting substrate9. When the high-frequency module1is disposed on the external board (not illustrated), the second main surface92faces the external board. The mounting substrate9is a double-sided mounting substrate having the circuit elements mounted on each of the first main surface91and the second main surface92.

The mounting substrate9is a multi-layer substrate in which a plurality of dielectric layers are laminated. The mounting substrate9has a plurality of conductive pattern portions94and a plurality of columnar electrodes95. The plurality of conductive pattern portions94include a conductive pattern portion the potential of which is set at the ground potential. The plurality of columnar electrodes95are used for electrical connection of the circuit elements mounted on the first main surface91with the conductive pattern portions94of the mounting substrate9. The plurality of columnar electrodes95are also used for electrical connection of the external connection terminals8with the circuit elements mounted on the first main surface91and the conductive pattern portions94of the mounting substrate9.

(3.2) Power Amplifier

As illustrated inFIG. 2A, the power amplifier11is located on the first main surface91side of the mounting substrate9. In the example inFIG. 2A, the power amplifier11is mounted on the first main surface91of the mounting substrate9. Note that part of the power amplifier11may be mounted on the first main surface91of the mounting substrate9, and the remaining part of the power amplifier11may be mounted in the mounting substrate9. In sum, the power amplifier11is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

As illustrated inFIGS. 2A and 2B, the duplexer32A is located on the first main surface91side of the mounting substrate9. In the example inFIGS. 2A and 2B, the duplexer32A is mounted on the first main surface91of the mounting substrate9. Note that part of the duplexer32A may be mounted on the first main surface91of the mounting substrate9, and the remaining part of the duplexer32A may be mounted in the mounting substrate9. In sum, the duplexer32A is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

The transmission filter12A in the duplexer32A is, for example, an acoustic wave filter including a plurality of serial arm resonators and a plurality of parallel arm resonators. The acoustic wave filter is, for example, a surface acoustic wave (SAW) filter using a surface acoustic wave. Further, the transmission filter12A may include at least one of an inductor and a capacitor that is connected in series or in parallel to one of the plurality of serial arm resonators or may include an inductor or a capacitor that is connected in series or in parallel to one of the plurality of parallel arm resonators.

In addition, as illustrated inFIG. 2B, the duplexer32A has a first main surface321and a second main surface322. The first main surface321and the second main surface322are opposite from each other in a depth direction of the duplexer32A. When the duplexer32A is mounted on the mounting substrate9, the second main surface322faces the first main surface91of the mounting substrate9.

Like the transmission filter12A, the reception filter22A in the duplexer32A is, for example, an acoustic wave filter including a plurality of serial arm resonators and a plurality of parallel arm resonators. The acoustic wave filter is, for example, a SAW filter using a surface acoustic wave. Further, the reception filter22A may include at least one of an inductor and a capacitor that is connected in series or in parallel to one of the plurality of serial arm resonators or may include an inductor or a capacitor that is connected in series or in parallel to one of the plurality of parallel arm resonators.

As illustrated inFIG. 2A, the duplexer32B is located on the first main surface91side of the mounting substrate9. In the example inFIG. 2A, the duplexer32B is mounted on the first main surface91of the mounting substrate9. Note that part of the duplexer32B is mounted on the first main surface91of the mounting substrate9, and the remaining part of the duplexer32B may be mounted in the mounting substrate9. In sum, the duplexer32B is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

The transmission filter12B in the duplexer32B is, for example, an acoustic wave filter including a plurality of serial arm resonators and a plurality of parallel arm resonators. The acoustic wave filter is, for example, a SAW filter using a surface acoustic wave. Further, the transmission filter12B may include at least one of an inductor and a capacitor that is connected in series or in parallel to one of the plurality of serial arm resonators or may include an inductor or a capacitor that is connected in series or in parallel to one of the plurality of parallel arm resonators.

Like the transmission filter12B, the reception filter22B in the duplexer32B is, for example, an acoustic wave filter including a plurality of serial arm resonators and a plurality of parallel arm resonators. The acoustic wave filter is, for example, a SAW filter using a surface acoustic wave. Further, the reception filter22B may include at least one of an inductor and a capacitor that is connected in series or in parallel to one of the plurality of serial arm resonators or may include an inductor or a capacitor that is connected in series or in parallel to one of the plurality of parallel arm resonators.

The filter33is not illustrated inFIGS. 2A and 2Bbut is located on the second main surface92side of the mounting substrate9. Note that part of the filter33may be mounted on the second main surface92of the mounting substrate9, and the remaining part of the filter33may be mounted in the mounting substrate9. In sum, the filter33is located closer to the second main surface92side of the mounting substrate9than to the first main surface91and has at least a portion mounted on the second main surface92.

(3.5) Output Matching Circuit

As illustrated inFIGS. 2A and 2B, the output matching circuit13is located on the first main surface91side of the mounting substrate9. An inductor131of the output matching circuit13is, for example, a chip-shaped element mounted on the first main surface91of the mounting substrate9or is a conductive pattern portion mounted in the mounting substrate9. In the example inFIGS. 2A and 2B, the inductor131of the output matching circuit13is mounted on the first main surface91of the mounting substrate9. Note that the output matching circuit13may include a capacitor (not illustrated) together with the inductor131. The capacitor has, for example, a configuration in which a chip-shaped element mounted on the first main surface91of the mounting substrate9or two conductive pattern portions that are mounted in the mounting substrate9and that are opposite from each other are included. In sum, the output matching circuit13is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91. In this embodiment, the inductor131of the output matching circuit13is a first matching inductor.

(3.6) Input Matching Circuit

As illustrated inFIG. 2A, the input matching circuit23is located on the first main surface91side of the mounting substrate9. An inductor231of the input matching circuit23is, for example, a chip-shaped element mounted on the first main surface91of the mounting substrate9or a conductive pattern portion mounted in the mounting substrate9. In the example inFIG. 2A, the inductor231of the input matching circuit23is mounted on the first main surface91of the mounting substrate9. Note that the input matching circuit23may include a capacitor (not illustrated) together with the inductor231. The capacitor has, for example, a configuration in which a chip-shaped element mounted on the first main surface91of the mounting substrate9or two conductive pattern portions that are mounted in the mounting substrate9and that are opposite from each other are included. In sum, the input matching circuit23is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91. In this embodiment, the inductor231of the input matching circuit23is a second matching inductor.

As illustrated inFIGS. 2A and 2B, the matching circuit71A is located on the first main surface91side of the mounting substrate9. An inductor711of the matching circuit71A is, for example, a chip-shaped element mounted on the first main surface91of the mounting substrate9or a conductive pattern portion mounted in the mounting substrate9. In the example inFIGS. 2A and 2B, the inductor711of the matching circuit71A is mounted on the first main surface91of the mounting substrate9. Note that the matching circuit71A may include a capacitor (not illustrated) together with the inductor711. The capacitor has, for example, a configuration in which a chip-shaped element mounted on the first main surface91of the mounting substrate9or two conductive pattern portions that are mounted in the mounting substrate9and that are opposite from each other are included. In sum, the matching circuit71A is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

As illustrated inFIG. 2A, the matching circuit71B is located on the first main surface91side of the mounting substrate9. An inductor712of the matching circuit71B is, for example, a chip-shaped element mounted on the first main surface91of the mounting substrate9or a conductive pattern portion mounted in the mounting substrate9. In the example inFIG. 2A, the inductor712of the matching circuit71B is mounted on the first main surface91of the mounting substrate9. Note that the matching circuit71B may include a capacitor (not illustrated) together with the inductor712. The capacitor has, for example, a configuration in which a chip-shaped element mounted on the first main surface91of the mounting substrate9or two conductive pattern portions that are mounted in the mounting substrate9and that are opposite from each other are included. In sum, the matching circuit71B is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

In this embodiment, the respective inductors711and712of the matching circuits71A and71B are each a third matching inductor.

The low-noise amplifier21is not illustrated inFIGS. 2A and 2Bbut is located on the second main surface92side of the mounting substrate9. Note that part of the low-noise amplifier21may be mounted on the second main surface92of the mounting substrate9, and the remaining part of the low-noise amplifier21may be mounted in the mounting substrate9. In sum, the low-noise amplifier21is located on the second main surface92side of the mounting substrate9and has at least a portion mounted on the second main surface92.

(3.9) First Switch

As illustrated inFIG. 2A, the first switch4is located on the first main surface91side of the mounting substrate9. In the example inFIG. 2A, the first switch4is mounted on the first main surface91of the mounting substrate9. Note that part of the first switch4may be mounted on the first main surface91of the mounting substrate9, and the remaining part of the first switch4may be mounted in the mounting substrate9. In sum, the first switch4is located closer to the first main surface91side of the mounting substrate9than to the second main surface92and has at least a portion mounted on the first main surface91.

(3.10) Second Switch

As illustrated inFIG. 2B, the second switch5is located on the second main surface92side of the mounting substrate9. In the example inFIG. 2B, the second switch5is mounted on the second main surface92of the mounting substrate9. Note that part of the second switch5may be mounted on the second main surface92of the mounting substrate9, and the remaining part of the second switch5may be mounted in the mounting substrate9. In sum, the second switch5is located closer to the second main surface92side of the mounting substrate9than to the first main surface91and has at least a portion mounted on the second main surface92.

(3.11) Third Switch

As illustrated inFIG. 2B, the third switch6is located on the second main surface92side of the mounting substrate9. In the example inFIG. 2B, the third switch6is mounted on the second main surface92of the mounting substrate9. Note that part of the third switch6may be mounted on the second main surface92of the mounting substrate9, and the remaining part of the third switch6may be mounted in the mounting substrate9. In sum, the third switch6is located closer to the second main surface92side of the mounting substrate9than to the first main surface91and has at least a portion mounted on the second main surface92. In this embodiment, the second switch5and the third switch6are respectively a first inductor L1and a second inductor L2and are each also another component different from a high-frequency component2.

The controller14is not illustrated inFIGS. 2A and 2Bbut is located on the second main surface92side of the mounting substrate9. Note that part of the controller14may be mounted on the second main surface92of the mounting substrate9, and the remaining part of the controller14may be mounted in the mounting substrate9. In sum, the controller14is located closer to the second main surface92side of the mounting substrate9than to the first main surface91and has at least a portion mounted on the second main surface92.

(3.13) External Connection Terminals

The plurality of external connection terminals8illustrated inFIG. 2Aare each a terminal for electrically connecting the mounting substrate9and the external board (not illustrated). The plurality of external connection terminals8include the antenna terminal81, the input terminal82, the output terminal83, and the plurality of control terminals84each of which is illustrated inFIG. 1.

The plurality of external connection terminals8are located on the second main surface92of the mounting substrate9. The plurality of external connection terminals8are each a columnar (for example, pillar shaped) electrode disposed on the second main surface92of the mounting substrate9. The material of the plurality of external connection terminals8is, for example, a metal (such as copper or a copper alloy). Each of the plurality of external connection terminals8has a proximal end portion and a distal end portion opposite to the proximal end portion, in the depth direction D1of the mounting substrate9. The proximal end portion is bonded to the second main surface92of the mounting substrate9. The distal end portion of each of the plurality of external connection terminals8may include, for example, a gold-plated layer.

As illustrated inFIG. 2B, the first resin layer101is disposed on the first main surface91of the mounting substrate9and covers the first main surface91and the circuit elements located on the first main surface91. The first resin layer101has a function of ensuring reliability such as the mechanical strength (impact resistance) and the humidity resistance of the circuit elements located on the first main surface91. That is, the first resin layer101has a function of protecting the circuit elements located on the first main surface91.

As illustrated inFIG. 2B, the second resin layer102is disposed on the second main surface92of the mounting substrate9and covers the second main surface92and the circuit elements located on the second main surface92. The second resin layer102has a function of ensuring the reliability such as the mechanical strength (impact resistance) and the humidity resistance of the circuit elements located on the second main surface92. That is, the second resin layer102has a function of protecting the circuit elements located on the second main surface92.

The shield layer103covers a main surface1011and an outer side-surrounding surface1013of the first resin layer101, an outer side-surrounding surface93of the mounting substrate9, and an outer side-surrounding surface1023of the second resin layer102. The material of the shield layer103is, for example, a metal. The shield layer103is in contact with the grounding layer of the mounting substrate9. This enables the potential of the shield layer103to be the same as the potential of the grounding layer. That is, the shield layer103is connected to the ground. The phrase “connected to the ground” in this specification denotes “electrically connected to the ground”. In addition, the case “electrically connected to the ground” in this specification includes not only the case of being directly electrically connected to the ground but also the case of being indirectly electrically connected to the ground, for example, with a conductive pattern portion94interposed therebetween.

(3.16) Conductive Member

The conductive member20includes, for example, a conductive wire201. The conductive wire201is connected to both of the duplexer32A and the shield layer103and is disposed between the duplexer32A and the shield layer103in the depth direction D1of the mounting substrate9. The conductive wire201is also electrically connected to the shield layer103. In this embodiment, the conductive wire201is connected to the first main surface321serving as a main surface of the duplexer32A, the first main surface321facing the shield layer103.

Here, a method for connecting the conductive wire201to the duplexer32A and the shield layer103will be described briefly. First, both end portions of the conductive wire201are connected to the first main surface321of the duplexer32A in such a manner that the conductive wire201is bent in an arch shape to project toward a portion opposite to the duplexer32A. The first resin layer101is then formed in such a manner as to cover the conductive wire201and the first main surface321of the duplexer32A. Further, an end portion, of the conductive wire201, opposite to the duplexer32A is exposed by grinding a surface, of the first resin layer101, opposite to the duplexer32A. Lastly, the shield layer103is formed in such a manner as to cover the main surface1011of the first resin layer101. The conductive member20and the shield layer103are thereby electrically connected. In this embodiment, the duplexer32A is the high-frequency component2.

As described above, the conductive wire201is covered with the first resin layer101, and thereby the first resin layer101can support the conductive wire201.

(4) Layout Relationship

Next, a layout relationship among the circuit elements included in the high-frequency module1will be described with reference toFIGS. 2A and 2B.

In the example inFIG. 2A, the duplexer32A is located between the inductor (first matching inductor)131of the output matching circuit13and the inductor (third matching inductor)711of the matching circuit71A. In this specification, the phrase “located between the inductor131and the inductor711” denotes that at least part of the duplexer32A is located in the region defined by lines each connecting a point of the inductor131and a point of the inductor711. In the example inFIG. 2A, at least part of the duplexer32A is located in a region R1defined by two lines LN1and LN2. The line LN1is a line connecting a point P1of the inductor131and a point P2of the inductor711. The line LN2is a line connecting a point P3of the inductor131and the point P4of the inductor711.

In this embodiment, the duplexer32A is the high-frequency component2, the inductor131is the first inductor L1, and the inductor711is the second inductor L2. The high-frequency component2is thus located between the first inductor L1and the second inductor L2. In addition, in this embodiment, the conductive member20electrically connected to the shield layer103is disposed between the high-frequency component2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, as described above, in this embodiment, the conductive member20is connected to the first main surface321that is the main surface of the high-frequency component2, the main surface facing the shield layer103. The layout area of the mounting substrate9may thus be ensured as compared with a case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to this embodiment, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

Further, in the example inFIG. 2B, a height H1of the high-frequency component2is lower than each of a height H2of the first inductor L1and a height H3of the second inductor L2in the depth direction D1of the mounting substrate9. The high-frequency module1may thereby be made shorter.

In addition, in the example inFIG. 2B, the duplexer32A overlaps with at least part of the second switch5in the depth direction D1of the mounting substrate9. As illustrated inFIG. 1, the reception filter22A included in the duplexer32A is connected to the second switch5. A path from the reception filter22A of the duplexer32A to the second switch5may thus be shortened. Further, in the example inFIG. 2B, the inductor131of the output matching circuit13overlaps with at least part of the third switch6in the depth direction D1of the mounting substrate9. As illustrated inFIG. 1, the inductor131of the output matching circuit13is connected to the third switch6. A path from the inductor131of the output matching circuit13to the third switch6may thus be shortened.

(5) Detailed Structure of Components of High-Frequency Module

The mounting substrate9illustrated inFIGS. 2A and 2Bis, for example, a printed-circuit board plate, or a low temperature co-fired ceramics (LTCC) substrate. The mounting substrate9herein is, for example, a multi-layer substrate including a plurality of dielectric layers (not illustrated) and a plurality of conductive pattern portions94. The plurality of dielectric layers and the plurality of conductive pattern portions94are stacked in the depth direction D1of the mounting substrate9. The plurality of conductive pattern portions94are each formed in a corresponding one of predetermined patterns. Each of the plurality of conductive pattern portions94includes one or more conductor portions on the plane orthogonal to the depth direction D1of the mounting substrate9. The material of each conductive pattern portion94is, for example, copper.

The first main surface91and the second main surface92of the mounting substrate9are away from each other in the depth direction D1of the mounting substrate9and intersect the depth direction D1of the mounting substrate9. The first main surface91in the mounting substrate9is, for example, orthogonal to the depth direction D1of the mounting substrate9but may include, for example, a side surface of a conductor portion, as a surface not orthogonal to the depth direction D1. The second main surface92in the mounting substrate9is also, for example, orthogonal to the depth direction D1of the mounting substrate9but may include, for example, a side surface of a conductor portion, as a surface not orthogonal to the depth direction D1. The first main surface91and the second main surface92of the mounting substrate9may have minute unevenness, a recessed portion, or a projecting portion.

The detailed structure of the duplexers32A and32B illustrated inFIGS. 2A and 2Bwill be described. The duplexer32A and the duplexer32B are not discriminated from each other and thus are each referred to as a duplexer in the following description.

Each duplexer is a filter as one chip. In the duplexer, for example, each of the plurality of serial arm resonators and the plurality of parallel arm resonators is configured as an acoustic wave resonator. In this case, the duplexer includes, for example, a substrate, a piezoelectric layer, and a plurality of interdigital transducer (IDT) electrodes. The substrate has a first surface and a second surface. The piezoelectric layer is disposed on the first surface of the substrate. The piezoelectric layer is disposed on a low-acoustic-velocity film. The plurality of IDT electrodes are disposed on the piezoelectric layer. The low-acoustic-velocity film herein is disposed on the substrate directly or indirectly. The piezoelectric layer is disposed on the low-acoustic-velocity film directly or indirectly. In the low-acoustic-velocity film, the acoustic velocity of a bulk wave propagating through the low-acoustic-velocity film is lower than the acoustic velocity of the bulk wave propagating through the piezoelectric layer. In the substrate, the acoustic velocity of a bulk wave propagating through the substrate is higher than the acoustic velocity of the bulk wave propagating through the piezoelectric layer. The material of the piezoelectric layer is, for example, lithium tantalate. The material of the low-acoustic-velocity film is, for example, silicon oxide. The substrate is, for example, a silicon substrate. If the wavelength of an acoustic wave determined by the electrode finger period of the IDT electrodes is X, the depth of the piezoelectric layer is, for example, lower than or equal to 3.5X. The depth of the low-acoustic-velocity film is, for example, lower than or equal to 2.0X.

The piezoelectric layer may be formed from, for example, one of lithium tantalate, lithium niobate, zinc oxide, aluminum nitride, and PZT. The low-acoustic-velocity film may include at least one type of material selected from the group consisting of silicon oxide, glass, silicon oxynitride, tantalum pentoxide, and a compound formed by adding fluorine, carbon, or boron to silicon oxide. In addition, the substrate may include at least one type of material selected from the group consisting of silicon, aluminum nitride, aluminum oxide, silicon carbide, silicon nitride, sapphire, lithium tantalate, lithium niobate, crystal, alumina, zirconia, cordierite, mullite, steatite, forsterite, magnesia, and diamond.

The duplexer further includes, for example, a spacer layer and a cover member. The spacer layer and the cover member are disposed on the first surface of the substrate. The spacer layer surrounds the plurality of IDT electrodes in a plan view in the depth direction of the substrate. The spacer layer is of a frame shape (rectangular frame shape) in the plan view in the depth direction of the substrate. The spacer layer is electrically insulative. The material of the spacer layer is, for example, a synthetic resin such as an epoxy resin or polyimide. The cover member has a plate shape. The shape of the cover member is a rectangle in the plan view in the depth direction of the substrate but is not limited to this. The shape may be, for example, a square. In the filter, the outer size of the cover member, the outer size of the spacer layer, and the outer size of the cover member are substantially identical in the plan view in the depth direction of the substrate. The cover member is located on the spacer layer in such a manner as to face the substrate in the depth direction of the substrate. The cover member overlaps with the plurality of IDT electrodes in the depth direction of the substrate and is away from the plurality of IDT electrodes in the depth direction of the substrate. The cover member is electrically insulative. The material of the cover member is, for example, a synthetic resin such as an epoxy resin or polyimide. The filter has a space surrounded by the substrate, the spacer layer, and the cover member. The filter has a gas in the space. The gas is, for example, air or an inert gas (for example, a nitrogen gas). A plurality of terminals are exposed from the cover member. The plurality of terminals are each, for example, a bump. The bump is, for example, a solder bump. The bump is not limited to the solder bump and may be, for example, a gold bump.

The duplexer may include, for example, a close-contact layer interposed between the low-acoustic-velocity film and the piezoelectric layer. The close-contact layer is formed from, for example, a resin (an epoxy resin or a polyimide resin). The duplexer may also include a dielectric film between the low-acoustic-velocity film and the piezoelectric layer, on the piezoelectric layer, or under the low-acoustic-velocity film.

The duplexer may also include, for example, a high-acoustic-velocity film interposed between the substrate and the low-acoustic-velocity film. The high-acoustic-velocity film is herein disposed on the substrate directly or indirectly. The low-acoustic-velocity film is disposed on the high-acoustic-velocity film directly or indirectly. The piezoelectric layer is disposed on the low-acoustic-velocity film directly or indirectly. In the high-acoustic-velocity film, the acoustic velocity of the bulk wave propagating through the high-acoustic-velocity film is higher than the acoustic velocity of the acoustic wave propagating through the piezoelectric layer. In the low-acoustic-velocity film, the acoustic velocity of the bulk wave propagating through the low-acoustic-velocity film is lower than the acoustic velocity of the bulk wave propagating through the piezoelectric layer.

The high-acoustic-velocity film is formed from: a piezoelectric body such as diamondlike carbon, aluminum nitride, aluminum oxide, silicon carbide, silicon nitride, silicon, sapphire, lithium tantalate, lithium niobate, or crystal; any of various ceramics such as alumina, zirconia, cordierite, mullite, steatite, and forsterite; magnesia; diamond; a material having any of the materials described above serving as a main component; or a material having a mixture of the materials described above serving as a main component.

The high-acoustic-velocity film has a function of confining the acoustic wave in the piezoelectric layer and the low-acoustic-velocity film. Accordingly, regarding the depth of the high-acoustic-velocity film, the deeper the high-acoustic-velocity film, the more desirable the high-acoustic-velocity film. The piezoelectric substrate may have a close-contact layer, a dielectric film, or another layer as a film other than the high-acoustic-velocity film, the low-acoustic-velocity film, and the piezoelectric layer.

Each of the plurality of serial arm resonators and the plurality of parallel arm resonators is not limited to the acoustic wave resonator described above and may be, for example, a SAW resonator or a bulk acoustic wave (BAW) resonator. The SAW resonator herein includes, for example, the piezoelectric substrate and the IDT electrodes disposed on the piezoelectric substrate. If the plurality of serial arm resonators and the plurality of parallel arm resonators are each configured as the SAW resonator, the filter has, on one piezoelectric substrate, the plurality of IDT electrodes for the plurality of respective serial arm resonators and the plurality of IDT electrodes for the plurality of respective parallel arm resonators. The piezoelectric substrate is, for example, a lithium tantalate substrate or a lithium niobate substrate.

The detailed structure of the first switch4, the second switch5, and the third switch6that are illustrated inFIGS. 2A and 2Bwill be described. The first switch4, the second switch5, and the third switch6are not discriminated from each other and thus are each referred to as a switch in the following description.

The switch is a switch IC. In more detail, the switch is, for example, an IC as one chip including a substrate and a switch functional unit. The substrate has a first surface and a second surface that are opposite from each other. The substrate is, for example, a silicon substrate. The switch functional unit includes a field effect transistor (FET) formed on the first surface of the substrate. The switch functional unit is a functional unit having a function of performing switching between connection states. Flip-chip mounting of the switch is performed on the first main surface91or the second main surface92of the mounting substrate9to cause the first surface of the substrate to face the mounting substrate9. In the plan view in the depth direction D1of the mounting substrate9, the switch has a square outline.

(5.4) Power Amplifier

The power amplifier11illustrated inFIG. 2Ais, for example, an IC as one chip including a substrate and an amplification functional unit. The substrate has a first surface and a second surface that are opposite from each other. The substrate is, for example, a gallium arsenide substrate. The amplification functional unit includes at least one transistor formed on the first surface of the substrate. The amplification functional unit is a functional unit having a function of amplifying a transmission signal in a predetermined frequency band. The transistor is, for example, a heterojunction bipolar transistor (HBT). In the power amplifier11, a supply voltage from the controller14is applied between a collector and an emitter of the HBT. The power amplifier11may include, for example, a capacitor for cutting direct current in addition to the amplification functional unit. Flip-chip mounting of the power amplifier11is performed on the first main surface91of the mounting substrate9, for example, to cause the first surface of the substrate to face the first main surface91of the mounting substrate9. In the plan view in the depth direction D1of the mounting substrate9, the power amplifier11has a square outline.

The low-noise amplifier21is not illustrated inFIGS. 2A and 2Bbut is, for example, an IC chip including a substrate and an amplification functional unit. The substrate has a first surface and a second surface that are opposite from each other. The substrate is, for example, a silicon substrate. The amplification functional unit is formed on the first surface of the substrate. The amplification functional unit is a functional unit having a function of amplifying a reception signal in a predetermined frequency band. Flip-chip mounting of the low-noise amplifier21is performed on the mounting substrate9, for example, to cause the first surface of the substrate to face the mounting substrate9. In the plan view in the depth direction D1of the mounting substrate9, the low-noise amplifier21has a square outline.

(6) Communication Apparatus

As illustrated inFIG. 1, the communication apparatus300according to Embodiment 1 includes the high-frequency module1, the antenna310, and the signal processing circuit301.

The antenna310is connected to the antenna terminal81of the high-frequency module1. The antenna310has a transmission function of radiating, as a radio wave, a transmission signal outputted from the high-frequency module1and a reception function of receiving a reception signal as a radio wave from an external apparatus and then outputting the signal to the high-frequency module1. The first transmission signal and the second transmission signal are cited as examples of the transmission signal. The first reception signal and the second reception signal are cited as examples of the reception signal.

(6.2) Signal Processing Circuit

The signal processing circuit301includes the RF-signal processing circuit302and a baseband-signal processing circuit303. The signal processing circuit301processes first communication signals (the first transmission signal and the first reception signal) and second communication signals (the second transmission signal and the second reception signal).

(6.2.1) RF Signal Processing Circuit

The RF-signal processing circuit302is, for example, a radio frequency integrated circuit (RFIC) and performs signal processing of a high-frequency signal. The RF-signal processing circuit302performs signal processing, such as upconverting, of a high-frequency signal (transmission signal) outputted from the baseband-signal processing circuit303and outputs the high-frequency signal subjected to the signal processing to the high-frequency module1. The RF-signal processing circuit302performs signal processing, such as downconverting, of a high-frequency signal (reception signal) outputted from the high-frequency module1and outputs the high-frequency signal subjected to the signal processing to the baseband-signal processing circuit303.

The baseband-signal processing circuit303is, for example, a baseband integrated circuit (BBIC) and performs predetermined signal processing of a signal transmitted from outside the signal processing circuit301. The received signal processed by the baseband-signal processing circuit303is used, for example, as an image signal for image displaying as an image signal or an audio signal for calling.

In the high-frequency module1according to Embodiment 1, the high-frequency component2(duplexer32A) is located between the first inductor L1(inductor131) and the second inductor L2(inductor711), and the high-frequency component2and the shield layer103are connected, with the conductive member20interposed therebetween. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to the embodiment, the conductive member20is connected to the first main surface321of the high-frequency component2. The layout area of the mounting substrate9may thereby be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Embodiment 1, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

Further, in the high-frequency module1according to Embodiment 1, the height H1of the high-frequency component2is lower than each of the height H2of the first inductor L1and the height H3of the second inductor L2in the depth direction D1of the mounting substrate9. The high-frequency module1may thereby be made shorter.

In addition, in the high-frequency module1according to Embodiment 1, the mounting substrate9is a double-sided mounting substrate. The high-frequency module1may thereby be downsized.

Hereinafter, modifications of Embodiment 1 will be described.

As illustrated inFIG. 3B, conductive wires201each serving as the conductive member20may be connected to the first main surface321of the duplexer32B. Hereinafter, the high-frequency module1according to Modification 1 will be described with reference toFIGS. 3A and 3B. Note that regarding the high-frequency module1according to Modification 1, the configuration except the conductive wires201is the same as that of the high-frequency module1according to Embodiment 1. The same components are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated inFIG. 3B, in the high-frequency module1according to Modification 1, each conductive wire201serving as the conductive member20is disposed between the duplexer32B and the shield layer103in the depth direction D1of the mounting substrate9. In more detail, a first end portion of the conductive wire201in the depth direction D1of the mounting substrate9is connected to the shield layer103, and a second end portion thereof in the depth direction D1is connected to the first main surface321of the duplexer32B. The conductive wire201is also electrically connected to the shield layer103.

In the example inFIG. 3A, the duplexer32B is located between the inductor (first matching inductor)131of the output matching circuit13and the inductor (second matching inductor)231of the input matching circuit23. That is, in the high-frequency module1according to Modification 1, the duplexer32B is the high-frequency component2, the inductor131is the first inductor L1, and the inductor231is the second inductor L2.

In the example inFIG. 3A, at least part of the duplexer32B serving as the high-frequency component2is located in a region R2defined by two lines LN3and LN4. The line LN3is a line connecting a point P5of the inductor131and a point P6of the inductor231. The line LN4is a line connecting a point P7of the inductor131and a point P8of the inductor231.

In addition, in the high-frequency module1according to Modification 1, the conductive members20electrically connected to the shield layer103are disposed between the high-frequency component2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, as described above, in the high-frequency module1according to Modification 1, the conductive members20are connected to the first main surface321of the high-frequency component2(duplexer32B). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 1, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

As illustrated inFIG. 4, the inductor712of the matching circuit71B may be the second inductor L2. Hereinafter, the high-frequency module1according to Modification 2 will be described with reference toFIG. 4. Note that the configuration of the high-frequency module1according to Modification 2 is the same as the configuration of the high-frequency module1according to Embodiment 1. The same components are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated inFIG. 4, in the high-frequency module1according to Modification 2, the duplexer32A is located between the inductor131of the output matching circuit13and the inductor712of the matching circuit71B. That is, in the high-frequency module1according to Modification 2, the duplexer32A is the high-frequency component2, the inductor131is the first inductor L1, and the inductor712is the second inductor L2.

In the example inFIG. 4, at least part of the duplexer32A is located in a region R3defined by two lines LN5and LN6. The line LN5is a line connecting the point P1of the inductor131and a point P9of the inductor712. The line LN6is a line connecting the point P7of the inductor131and a point P10of the inductor712.

In addition, in the high-frequency module1according to Modification 2, the conductive member20electrically connected to the shield layer103is disposed between the high-frequency component2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 2, the conductive member20is connected to the first main surface321of the high-frequency component2(duplexer32A). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 2, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

As illustrated inFIG. 5, the inductor711of the matching circuit71A may be the first inductor L1. Hereinafter, the high-frequency module1according to Modification 3 will be described with reference toFIG. 5. Note that the configuration of the high-frequency module1according to Modification 3 is the same as the configuration of the high-frequency module1according to Modification 1. The same components are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated inFIG. 5, in the high-frequency module1according to Modification 3, the duplexer32B is located between the inductor711of the matching circuit71A and the inductor231of the input matching circuit23. That is, in the high-frequency module1according to Modification 3, the duplexer32B is the high-frequency component2, the inductor711is the first inductor L1, and the inductor231is the second inductor L2.

In the example inFIG. 5, at least part of the duplexer32B is located in a region R4defined by two lines LN7and LN8. The line LN7is a line connecting the point P2of the inductor711and a point P11of the inductor231. The line LN8is a line connecting the point P4of the inductor711and a point P12of the inductor231.

In addition, in the high-frequency module1according to Modification 3, the conductive members20electrically connected to the shield layer103are disposed between the high-frequency component2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 3, the conductive members20are connected to the first main surface321of the high-frequency component2(duplexer32B). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 3, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

As illustrated inFIG. 6, the inductor712of the matching circuit71B may be the first inductor L1. Hereinafter, the high-frequency module1according to Modification 4 will be described with reference toFIG. 6. Note that the configuration of the high-frequency module1according to Modification 4 is the same as the configuration of the high-frequency module1according to Modification 1. The same components are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated inFIG. 6, in the high-frequency module1according to Modification 4, the duplexer32B is located between the inductor712of the matching circuit71B and the inductor231of the input matching circuit23. That is, in the high-frequency module1according to Modification 4, the duplexer32B is the high-frequency component2, the inductor712is the first inductor L1, and the inductor231is the second inductor L2.

In the example inFIG. 6, at least part of the duplexer32B is located in a region R5defined by two lines LN9and LN10. The line LN9is a line connecting a point P13of the inductor712and the point P11of the inductor231. The line LN10is a line connecting a point P14of the inductor712and the point P12of the inductor231.

In addition, in the high-frequency module1according to Modification 4, the conductive members20electrically connected to the shield layer103are disposed between the high-frequency component2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 4, the conductive members20are connected to the first main surface321of the high-frequency component2(duplexer32B). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 4, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

FIG. 7is a cross-sectional view of the high-frequency module1according to Modification 5.

As illustrated inFIG. 7, in the high-frequency module1according to Modification 5, the power amplifier11, the inductor131of the output matching circuit13, the duplexer32A, the inductor711of the matching circuit71A, the inductor231of the input matching circuit23, and the first switch4are located on the first main surface91of the mounting substrate9. In addition, in the high-frequency module1according to Modification 5, the controller14, the third switch6, an IC chip34, and the filter33are located on the second main surface92of the mounting substrate9. Further, the plurality of (two, in the illustrated example) external connection terminals8are located on the second main surface92of the mounting substrate9. The IC chip34includes the second switch5and the low-noise amplifier21. The plurality of external connection terminals8include the antenna terminal81and the input terminal82. The conductive member20is, for example, the conductive wire201.

In the high-frequency module1according to Modification 5, the duplexer32A is located between the inductor131of the output matching circuit13and the inductor711of the matching circuit71A, but the illustration of this layout is omitted. That is, in the high-frequency module1according to Modification 5, the duplexer32A is the high-frequency component2, the inductor131is the first inductor L1, and the inductor711is the second inductor L2.

In addition, in the high-frequency module1according to Modification 5, the conductive member20(conductive wire201) electrically connected to the shield layer103is disposed between the high-frequency component2(duplexer32A) and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 5, the conductive member20(conductive wire201) is connected to the first main surface321of the high-frequency component2(duplexer32A). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 5, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

Further, as illustrated inFIG. 7, in the high-frequency module1according to Modification 5, the IC chip34including the low-noise amplifier21overlaps with at least part of the duplexer32A serving as the high-frequency component2in the depth direction D1of the mounting substrate9. A path from the high-frequency component2to the IC chip34may thus be shortened.

In addition, in the high-frequency module1according to Modification 5, the power amplifier11overlaps with the controller14in the depth direction D1of the mounting substrate9. A path from the controller14to the power amplifier11may thus be shortened. Further, in the high-frequency module1according to Modification 5, the IC chip34including the low-noise amplifier21overlaps with the inductor231of the input matching circuit23in the depth direction D1of the mounting substrate9. A path from the inductor231to the IC chip34may thus be shortened.

FIG. 8is a cross-sectional view of the high-frequency module1according to Modification 6.

The high-frequency module1according to Modification 6 is different from the high-frequency module1according to Embodiment 1 in that the plurality of external connection terminals8are ball bumps. The high-frequency module1according to Modification 6 is also different from the high-frequency module1according to Embodiment 1 in that the high-frequency module1according to Modification 6 does not include the second resin layer102in the high-frequency module1according to Embodiment 1. The high-frequency module1according to Modification 6 may include an underfill portion disposed in a gap between the second main surface92of the mounting substrate9and each of the controller14, the third switch6, the IC chip34, and the filter33.

The material of each ball bump serving as a corresponding one of the plurality of external connection terminals8is, for example, gold, copper, or solder.

In the plurality of external connection terminals8, an external connection terminal8serving as the ball bump and an external connection terminal8serving as the columnar electrode may coexist.

The high-frequency module1according to Modification 7 is different from the high-frequency module1according to Embodiment 1 in that the conductive member20connecting the high-frequency component2and the shield layer103is a conductive pillar202. Hereinafter, the high-frequency module1according to Modification 7 will be described with reference toFIG. 9A.

In the high-frequency module1according to Modification 7, the duplexer32A located on the first main surface91side of the mounting substrate9is the high-frequency component2. In addition, as illustrated inFIG. 9A, the conductive pillar202serving as the conductive member20is disposed between the duplexer32A and the shield layer103in the depth direction D1of the mounting substrate9. The conductive pillar202is also connected to the first main surface321of the duplexer32A. Further, the conductive pillar202is electrically connected to the shield layer103.

In the high-frequency module1according to Modification 7, the high-frequency component2is located between the first inductor L1and the second inductor L2, but the illustration of this layout is omitted. In addition, in the high-frequency module1according to Modification 7, the conductive pillar202electrically connected to the shield layer103is disposed between the duplexer32A and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 7, the conductive member20(conductive pillar202) is connected to the first main surface321of the high-frequency component2(duplexer32A). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 7, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

The high-frequency module1according to Modification 8 is different from the high-frequency module1according to Embodiment 1 in that the conductive member20connecting the high-frequency component2and the shield layer103is a metal block203. Hereinafter, the high-frequency module1according to Modification 8 will be described with reference toFIG. 9B.

In the high-frequency module1according to Modification 8, the duplexer32A located on the first main surface91side of the mounting substrate9is the high-frequency component2. In addition, as illustrated inFIG. 9B, the metal block203serving as the conductive member20is disposed between the duplexer32A and the shield layer103in the depth direction D1of the mounting substrate9. The metal block203is also connected to the first main surface321of the duplexer32A. Further, the metal block203is electrically connected to the shield layer103.

In the high-frequency module1according to Modification 8, the high-frequency component2is located between the first inductor L1and the second inductor L2, but the illustration of this layout is omitted. In addition, in the high-frequency module1according to Modification 8, the metal block203electrically connected to the shield layer103is disposed between the duplexer32A and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1according to Modification 8, the conductive member20(metal block203) is connected to the first main surface321of the high-frequency component2(duplexer32A). The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1according to Modification 8, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

The high-frequency module1according to Modification 9 is different from the high-frequency module1according to Embodiment 1 in that the conductive member20is electrically connected to the conductive pattern portion94of the mounting substrate9with a through-hole electrode323interposed therebetween. Hereinafter, the high-frequency module1according to Modification 9 will be described with reference toFIG. 10A.

As illustrated inFIG. 10A, in the high-frequency module1according to Modification 9, the duplexer32A has the through-hole electrode323. The through-hole electrode323penetrates the duplexer32A in the depth direction of the duplexer32A. As illustrated inFIG. 10A, the mounting substrate9also has the conductive pattern portion94and the columnar electrode95. The potential of the conductive pattern portion94is set at the ground potential. The through-hole electrode323is electrically connected to the conductive pattern portion94with the columnar electrode95interposed therebetween.

In the high-frequency module1according to Modification 9, the conductive member20(conductive wire201) is electrically connected to the shield layer103electrically connected to the ground. The conductive member20is also electrically connected to the through-hole electrode323of the duplexer32A. Further, as described above, the through-hole electrode323is electrically connected to the conductive pattern portion94with the columnar electrode95interposed therebetween. The conductive member20is electrically connected to the ground with the through-hole electrode323and the columnar electrodes95interposed therebetween.

In the high-frequency module1according to Modification 9, the conductive member20is electrically connected to the ground with the shield layer103interposed therebetween and is also electrically connected to the ground (conductive pattern portion94) with the through-hole electrode323and the columnar electrode95interposed therebetween. The coupling between the first inductor L1and the second inductor L2may thereby be restrained further.

The high-frequency module1according to Modification 10 is different from the high-frequency module1according to Embodiment 1 in that the conductive member20is electrically connected to the conductive pattern portion94of the mounting substrate9with a side electrode324interposed therebetween. Hereinafter, the high-frequency module1according to Modification 10 will be described with reference toFIG. 10B.

As illustrated inFIG. 10B, in the high-frequency module1according to Modification 10, the duplexer32A has the side electrode324. The side electrode324is disposed on the first main surface321, a side surface325, and the second main surface322of the duplexer32A. As illustrated inFIG. 10B, the mounting substrate9also has the conductive pattern portion94and the columnar electrode95. The potential of the conductive pattern portion94is set at the ground potential. The side electrode324is electrically connected to the conductive pattern portion94with the columnar electrode95interposed therebetween.

In the high-frequency module1according to Modification 10, the conductive member20(conductive wire201) is electrically connected to the shield layer103electrically connected to the ground. The conductive member20is also electrically connected to the side electrode324of the duplexer32A. Further, as described above, the side electrode324is electrically connected to the conductive pattern portion94with the columnar electrode95interposed therebetween. The conductive member20is thus electrically connected to the ground with the side electrode324and the columnar electrode95interposed therebetween.

In the high-frequency module1according to Modification 10, the conductive member20is electrically connected to the ground with the shield layer103interposed therebetween and is also electrically connected to the ground (conductive pattern portion94) with the side electrode324and the columnar electrode95interposed therebetween. The coupling between the first inductor L1and the second inductor L2may thereby be restrained further.

The high-frequency module1according to Modification 11 is different from the high-frequency module1according to Embodiment 1 in that the conductive member20is electrically connected to the conductive pattern portion94of the mounting substrate9with a conductive wire30interposed therebetween. Hereinafter, the high-frequency module1according to Modification 11 will be described with reference toFIG. 10C.

As illustrated inFIG. 10C, in the high-frequency module1according to Modification 11, the mounting substrate9has the conductive pattern portion94and the columnar electrode95. The potential of the conductive pattern portion94is set at the ground potential. In the high-frequency module1according to Modification 11, the conductive wire201serving as the conductive member20is electrically connected to the columnar electrode95with the conductive wire30interposed therebetween. The conductive wire201is thereby electrically connected to the ground (conductive pattern portion94) with the conductive wire30and the columnar electrode95interposed therebetween. The conductive wire201is also electrically connected to the shield layer103electrically connected to the ground.

In the high-frequency module1according to Modification 11, the conductive member20is electrically connected to the ground with the shield layer103interposed therebetween and is also electrically connected to the ground (conductive pattern portion94) with the conductive wire30and the columnar electrode95interposed therebetween. The coupling between the first inductor L1and the second inductor L2may thereby be restrained further.

The high-frequency module1according to Modification 12 is different from the high-frequency module1according to Embodiment 1 in that the conductive wire201connects a plurality of (two, in the illustrated example) high-frequency components2. Hereinafter, the high-frequency module1according to Modification 12 will be described with reference toFIG. 11.

As illustrated inFIG. 11, the high-frequency module1according to Modification 12 includes the duplexers32A and32B as the plurality of (two, in the illustrated example) high-frequency components2. The duplexers32A and32B are located between the inductor131of the output matching circuit13and the inductor231of the input matching circuit23. That is, in the high-frequency module1according to Modification 12, the inductor131is the first inductor L1, and the inductor231is the second inductor L2.

As illustrated inFIG. 11, in the high-frequency module1according to Modification 12, the conductive wire201serving as the conductive member20is disposed in such a manner as to extend over both of the two duplexers32A and32B. The conductive wire201is also electrically connected to the shield layer103electrically connected to the ground.

In the high-frequency module1according to Modification 12, as described above, the conductive member20is disposed in such a manner as to extend over the plurality of high-frequency components2. The coupling between the first inductor L1and the second inductor L2may thereby be restrained.

(8.13) Other Modifications

Embodiment 1 is only one of various embodiments of the present disclosure. Various changes may be made to Embodiment 1 in designing or the like as long as the possible benefit of the present disclosure is achievable.

The mounting substrate9is not limited to the printed-circuit board plate or the LTCC substrate and may be, for example, a high temperature co-fired ceramics (HTCC) substrate or a substrate having components built therein.

It suffices that the number of selective terminals of each of the first switch4, the second switch5, and the third switch6may be plural, and the number is not limited to the exemplified number.

The second switch5and the third switch6may be formed as one chip.

The first switch4, the second switch5, and the third switch6may each be controlled in accordance with, for example, a control signal from the RF-signal processing circuit302of the signal processing circuit301instead of being controlled by the controller14.

The transmission filters12A and12B and the reception filters22A and22B are each an acoustic wave filter using a surface acoustic wave but are not limited to these. The transmission filters12A and12B and the reception filters22A and22B may each be, for example, an acoustic wave filter using a boundary acoustic wave, a plate wave, or the like.

In the acoustic wave filter, each of the plurality of serial arm resonators and the plurality of parallel arm resonators is not limited to a SAW resonator and may be, for example, a bulk acoustic wave (BAW) resonator.

The high-frequency component2is the duplexer32A but is not limited to this. The high-frequency component2may be, for example, at least one of the transmission filters12A and12B or may be at least one of the reception filters22A and22B. The high-frequency component2may also be, for example, a diplexer including the filter33. Further, the high-frequency component2may also be, for example, a LC filter.

A plurality of conductive members20may be provided. In this case, and the plurality of conductive members20may include at least one conductive wire201, at least one conductive pillar202, and at least one metal block203.

In Modification 5, the controller14is located (mounted) on the second main surface92side of the mounting substrate9; however, the controller14may be located (mounted), for example, on the first main surface91side of the mounting substrate9and adjacent to the power amplifier11.

It suffices that the height H1of the high-frequency component2is lower than at least one of the height H2of the first inductor L1and the height H3of the second inductor L2. That is, the height H1of the high-frequency component2may be higher than the height H2of the first inductor L1and may be lower than the height H3of the second inductor L2. Alternatively, the height H1of the high-frequency component2may be lower than the height H2of the first inductor L1and may be higher than the height H3of the second inductor L2.

As illustrated inFIGS. 12A and 12B, a high-frequency module1A according to Embodiment 2 is different from the high-frequency module1according to Embodiment 1 in that the high-frequency module1A has only the reception function. Note that for the high-frequency module1A according to Embodiment 2, the same components as those in the high-frequency module1according to Embodiment 1 are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated inFIGS. 12A and 12B, the high-frequency module1A according to Embodiment 2 includes a plurality of (four, in the illustrated example) reception filters221to224, a plurality of (four, in the illustrated example) input matching circuits24A to24D, and a plurality of (four, and in the illustrated example) matching circuits72A to72D. The high-frequency module1A also includes a chip IC35and the plurality of (two, in the illustrated example) external connection terminals8. Further, as illustrated inFIGS. 12A and 12B, the high-frequency module1A includes the mounting substrate9, the first resin layer101, the second resin layer102, the shield layer103, and the plurality of (two, in the illustrated example) conductive members20. The chip IC35includes a plurality of (two, in the illustrated example) low-noise amplifiers211and212and a first switch4A. The plurality of conductive members20each include, for example, the conductive wire201.

The plurality of reception filters221to224, inductors241to244of the plurality of respective input matching circuits24A to24D, and inductors721to724of the plurality of respective matching circuits72A to72D are located on the first main surface91side of the mounting substrate9. The IC chip35is located on the second main surface92side of the mounting substrate9.

In the IC chip35, the first switch4A is located between the low-noise amplifier211and the low-noise amplifier212. Isolation between communication through the first reception path including the low-noise amplifier211and communication through the second reception path including the low-noise amplifier212may thereby be enhanced.

As illustrated inFIG. 12A, in the high-frequency module1A according to Embodiment 2, the reception filter221is located between the inductor241of the input matching circuit24A and the inductor721of the matching circuit72A. In addition, in the high-frequency module1A, the reception filter222is located between the inductor242of the input matching circuit24B and the inductor722of the matching circuit72B. In addition, in the high-frequency module1A, the reception filter223is located between the inductor243of the input matching circuit24C and the inductor723of the matching circuit72C. In addition, in the high-frequency module1A, the reception filter224is located between the inductor244of the input matching circuit24D and the inductor724of the matching circuit72D. That is, in the high-frequency module1A according to Embodiment 2, the plurality of reception filters221to224are each the high-frequency component2, the plurality of inductors241to244are each the first inductor L1, and the plurality of inductors721to724are each the second inductor L2.

At least part of the reception filter221is located in a region R11defined by two lines LN11and LN12. The line LN11is a line connecting a point P21of the inductor241and a point P22of the inductor721. The line LN12is a line connecting a point P23of the inductor241and a point P24of the inductor721.

At least part of the reception filter222is located in a region R12defined by two lines LN13and LN14. The line LN13is a line connecting a point P25of the inductor242and a point P26of the inductor722. The line LN14is a line connecting a point P27of the inductor242and a point P28of the inductor722.

At least part of the reception filter223is located in a region R13defined by two lines LN15and LN16. The line LN15is a line connecting a point P29of the inductor243and a point P30of the inductor723. The line LN16is a line connecting a point P31of the inductor243and a point P32of the inductor723.

At least part of the reception filter224is located in a region R14defined by two lines LN17and LN18. The line LN17is a line connecting a point P33of the inductor244and a point P34of the inductor724. The line LN18is a line connecting a point P35of the inductor244and a point P36of the inductor724.

In addition, in the high-frequency module1A according to Embodiment 2, one of the plurality of conductive wires201is disposed between the reception filter221and the shield layer103in the depth direction D1of the mounting substrate9and is also connected to a first main surface2211of the reception filter221. The other one of the plurality of conductive wires201is disposed between the reception filter222and the shield layer103in the depth direction D1of the mounting substrate9and is also connected to a first main surface2221of the reception filter222. Note that the illustration of a conductive member between the reception filter223and the shield layer103and a conductive member between the reception filter224and the shield layer103is omitted but is the same as those of the reception filters221and222.

In the high-frequency module1A according to Embodiment 2, each of the high-frequency components2is located between the first inductor L1and the second inductor L2. In addition, in the high-frequency module1A, each of the conductive members20electrically connected to the shield layer103is disposed between a corresponding one of the high-frequency components2and the shield layer103in the depth direction D1of the mounting substrate9. The coupling between the first inductor L1and the second inductor L2may thereby be diminished.

In addition, in the high-frequency module1A according to Embodiment 2, each conductive member20is connected to the first main surface321of the high-frequency component2. The layout area of the mounting substrate9may thus be ensured as compared with the case where the conductive member20is connected to the first main surface91of the mounting substrate9. That is, with the high-frequency module1A according to Embodiment 2, the coupling between the first inductor L1and the second inductor L2may be restrained, and the layout area of the mounting substrate9may also be ensured.

In a modification of Embodiment 2, each modification of Embodiment 1 may be applied to the high-frequency module1A according to Embodiment 2. The same advantageous effects as those of the high-frequency module1A according to Embodiment 2 are also exerted in the high-frequency module1according to the modification.

The embodiments and the modifications described above are merely part of various embodiments and modifications of the present disclosure. Various changes may be made to the embodiments and the modifications in designing or the like as long as the possible benefit of the present disclosure is achievable.

This specification discloses the following aspects.

A high-frequency module (1or1A) according to a first aspect includes a mounting substrate (9), a first inductor (L1), a second inductor (L2), at least one high-frequency component (2), a shield layer (103), and a conductive member (20). The mounting substrate (9) has a main surface (91). The first inductor (L1) is located on the main surface (91) side of the mounting substrate (9). The second inductor (L2) is located on the main surface (91) side of the mounting substrate (9). The high-frequency component (2) is located on the main surface (91) side of the mounting substrate (9) and between the first inductor (L1) and the second inductor (L2). The shield layer (103) is connected to the ground. The conductive member (20) connects the high-frequency component (2) and the shield layer (103). The conductive member (20) is connected to a main surface (321) opposite from the shield layer (103) in the high-frequency component (2).

According to this aspect, with the conductive member (20) electrically connected to the shield layer (103), the coupling between the first inductor (L1) and the second inductor (L2) may be diminished. In addition, since the conductive member (20) is connected to the main surface (321) of the high-frequency component (2), the layout area of the mounting substrate (9) may be ensured as compared with the case where the conductive member (20) is connected to the mounting substrate (9) having the high-frequency component (2) mounted thereon. That is, according to this aspect, the coupling between the first inductor (L1) and the second inductor (L2) may be restrained, and the layout area of the mounting substrate (9) may also be ensured.

In the first aspect, in the high-frequency module (1or1A) according to a second aspect, the conductive member (20) includes a conductive wire (201).

According to this aspect, mounting at a high density (narrow-pitch or minimal land mounting) may be performed.

In the second aspect, the high-frequency module (1or1A) according to a third aspect includes a plurality of high-frequency components (2). The conductive member (20) is connected to the plurality of high-frequency components (2).

According to this aspect, the coupling between the first inductor (L1) and the second inductor (L2) may be restrained.

In one of the first to third aspects, in the high-frequency module (1or1A) according to a fourth aspect, the conductive member (20) includes a conductive pillar (202).

In one of the first to fourth aspects, in the high-frequency module (1or1A) according to a fifth aspect, the conductive member (20) includes a metal block (203).

In one of the first to fifth aspects, in the high-frequency module (1or1A) according to a sixth aspect, in a depth direction (D1) of the mounting substrate (9), a height (H1) of the high-frequency component (2) is lower than at least one of a height (H2) of the first inductor (L1) and a height (H3) of the second inductor (L2).

According to this aspect, the high-frequency module (1or1A) may be made shorter.

In the sixth aspect, in the high-frequency module (1or1A) according to a seventh aspect, in the depth direction (D1) of the mounting substrate (9), the height (H1) of the high-frequency component (2) is lower than each of the height (H2) of the first inductor (L1) and the height (H3) of and the second inductor (L2).

According to this aspect, the high-frequency module (1or1A) may be made shorter.

In one of the first to seventh aspects, the high-frequency module (1or1A) according to an eighth aspect further includes a resin layer (101). The resin layer (101) is disposed between the high-frequency component (2) and the shield layer (103).

According to this aspect, the conductive member (20) may be supported with the resin layer (101).

In one of the first to eighth aspects, in the high-frequency module (1or1A) according to a ninth aspect, the high-frequency component (2) is a reception filter (22A or22B), a transmission filter (12A or12B), or a duplexer (32A or32B). The reception filter (22A or22B) allows a reception signal from an antenna (310) to pass therethrough. The transmission filter (12A or12B) allows a transmission signal to the antenna (310) to pass therethrough. The duplexer (32A or32B) includes both of the reception filter (22A or22B) and the transmission filter (12A or12B).

In one of the first to ninth aspects, in the high-frequency module (1or1A) according to a tenth aspect, the first inductor (L1) is a first matching inductor (131), a second matching inductor (231), or a third matching inductor (711or712). The first matching inductor (131) is disposed on a signal path between the high-frequency component (2) and a power amplifier (11) that amplifies the transmission signal to the antenna (310) (on a transmission path T1). The second matching inductor (231) is disposed on a signal path between the high-frequency component (2) and a low-noise amplifier (21) that amplifies the reception signal from the antenna (310) (on a reception path T2). The third matching inductor (711or712) is disposed on a signal path between the high-frequency component (2) and the antenna (310) (on the transmission path T1or the reception path T2). The second inductor (L2) is the first matching inductor (131), the second matching inductor (231), or the third matching inductor (711or712) and is different from the first inductor (L1).

In one of the first to tenth aspects, in the high-frequency module (1or1A) according to an eleventh aspect, the mounting substrate (9) has a first main surface (91) serving as the main surface (91) and a second main surface (92) opposite from the first main surface (91). The high-frequency module (1or1A) further includes an external connection terminal (8), and another component (for example, the second switch5or the third switch6). The external connection terminal (8) is located on the second main surface (92) of the mounting substrate (9). The other component is a component different from the first inductor (L1), the second inductor (L2), and the high-frequency component (2). The first inductor (L1), the second inductor (L2), and the high-frequency component (2) are located on the first main surface (91) side of the mounting substrate (9). The other component is located on the second main surface (92) side of the mounting substrate (9).

According to this aspect, the high-frequency module (1or1A) may be downsized.

In the eleventh aspect, in the high-frequency module (1or1A) according to a twelfth aspect, the other component is an IC chip (34) including at least a low-noise amplifier (21). The high-frequency component (2) is the reception filter (22A or22B) or the duplexer (32A or32B). The reception filter (22A or22B) allows the reception signal from the antenna (310) to pass therethrough. The duplexer (32A or32B) includes both of the reception filter (22A or22B) and the transmission filter (12A or12B). The transmission filter (12A or12B) allows the transmission signal to the antenna (310) to pass therethrough. The IC chip (34) overlaps with at least part of the high-frequency component (2) in the depth direction (D1) of the mounting substrate (9).

According to this aspect, a path from the high-frequency component (2) to the IC chip (34) may be shortened.

In one of the first to twelfth aspects, in the high-frequency module (1or1A) according to a thirteenth aspect, the conductive member (20) is electrically connected to the ground with a through-hole electrode (323), a side electrode (324), or a conductive wire (30) interposed therebetween. The through-hole electrode (323) penetrates through the high-frequency component (2) in a depth direction of the high-frequency component (2). The side electrode (324) is disposed over the side surface of the high-frequency component (2).

According to this aspect, the coupling between the first inductor (L1) and the second inductor (L2) may be restrained further.

A communication apparatus (300) according to a fourteenth aspect includes the high-frequency module (1or1A) in one of the first to thirteenth aspects and a signal processing circuit (301). The signal processing circuit (301) processes the reception signal from the antenna (310) and the transmission signal to the antenna (310).

According to this aspect, with the conductive member (20) electrically connected to the shield layer (103), the coupling between the first inductor (L1) and the second inductor (L2) may be diminished. In addition, since the conductive member (20) is connected to the main surface (321) of the high-frequency component (2), the layout area of the mounting substrate (9) may be ensured as compared with the case where the conductive member (20) is connected to the mounting substrate (9) having the high-frequency component (2) mounted thereon. That is, according to this aspect, the coupling between the first inductor (L1) and the second inductor (L2) may be restrained, and the layout area of the mounting substrate (9) may also be ensured.1,1A high-frequency module2high-frequency component4first switch5second switch6third switch8external connection terminal9mounting substrate11power amplifier12A,12B transmission filter13output matching circuit14controller20conductive member21low-noise amplifier22A,22B,221to224reception filter23,24A to24D input matching circuit32A,32B duplexer34IC chip40common terminal41,42selective terminal48input unit50common terminal51,52selective terminal58input unit60common terminal61,62selective terminal68input unit71A,71B,72A to72D matching circuit81antenna terminal82input terminal83output terminal84control terminal91first main surface (main surface)92second main surface93outer side-surrounding surface101first resin layer102second resin layer103shield layer131inductor (first matching inductor)148terminal201conductive wire202conductive pillar203metal block231,241to244inductor (second matching inductor)300communication apparatus301signal processing circuit302RF signal processing circuit303baseband-signal processing circuit310antenna321first main surface (main surface)322second main surface323through-hole electrode324side electrode711,712,721to724inductor (third matching inductor)1011main surface1013outer side-surrounding surface1023outer side-surrounding surfaceD1depth direction of mounting substrateH1height of high-frequency componentH2height of first inductorH3height of second inductorL1first inductorL2second inductorLN1to LN18lineP1to P14, P21to P36pointR1to R5, R11to R14regionT1transmission pathT11first transmission pathT12second transmission pathT2reception pathT21first reception pathT22second reception path