Patent ID: 12224498

DETAILED DESCRIPTION

It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. Additionally, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features. The description is not to be considered as limiting the scope of the embodiments described herein.

Several definitions that apply throughout this disclosure will now be presented.

The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising” means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in a so-described combination, group, series, and the like.

FIG.1andFIG.2illustrate a wireless radiation module100in accordance with an embodiment of the present disclosure. The wireless radiation module100can be applied to any electronic device to transmit and receive radio waves, to exchange signals. In one embodiment, the wireless radiation module100may be a radio frequency signal transceiver module.

In the embodiment, the wireless radiation module100includes a substrate11, a radiation portion12, an active circuit13, and a connector14.

The substrate11may be a dielectric substrate, such as a printed circuit board (PCB), a ceramic substrate or other dielectric substrate, which is not specifically limited here. The substrate11includes a first surface111and a second surface112, and the second surface112is arranged opposite to the first surface111.

In the embodiment, the wireless radiation module100includes a plurality of radiation portions. For example, in the embodiment shown inFIG.1, the wireless radiation module100includes four radiation portions12. The radiation portions12are arranged on the first surface111of the substrate11and are spaced from each other. The radiation portions12can be connected to the second surface112of the substrate11through vias or through holes. In one embodiment, the radiation portions12are metal sheets, rectangular and coplanar. The embodiment of the present disclosure does not specifically limit the shape and structure of the radiation portions12, for example, the shape of the radiation portions12may also be circular, square or other shape.

Referring toFIG.3, in the embodiment, each radiation portion12includes a feed point121, the feed point121is used to electrically connect to a corresponding feed source (not shown) through a matching circuit (not shown), feeding the electrical signal to the corresponding radiation portion12.

Referring toFIG.2, in the embodiment, the active circuit13is arranged on the second surface112of the substrate11. A connecting line (not shown) is arranged on the second surface112of the substrate11, and the connecting line is connected to the active circuit13. The active circuit13may include a switch and/or other adjustable elements with variable impedance (not shown). The active circuit13can be electrically connected to the radiation portion12and the connector14through the connecting line. For example, in one embodiment, the substrate11defines a via (not shown in the figure), and the radiation portion12can be connected to the second surface112of the substrate11through the via, and the radiation portion12can be connected to the active circuit13through the connecting line on the second surface112.

The connector14is arranged on the second surface112of the substrate11. The connector14is arranged on the surface which the active circuit13is arranged. In some embodiments, the connectors14can be spaced from the active circuit13and electrically connected to each other. The embodiment of the present disclosure does not limit the specific positional relationship and connection relationship between the connector14and the active circuit13. For example, in one embodiment, the active circuit13can be arranged in the connector14, and the connector14can accommodate the active circuit13. The connector14is electrically connected to the active circuit13and connected to the corresponding transmission line. Signal transmission of the wireless radiation module100, for example, sending or receiving signals, is realized through the transmission line.

It can be understood that the transmission line can be, but is not limited to, a coaxial cable, a flexible printed circuit board (FPCB) or other transmission lines.

Referring toFIG.4andFIG.5, when the wireless radiation module100is used, the wireless radiation module100can be arranged on one side of a radiator200. In one embodiment, the first surface111of the substrate11is arranged towards the radiator200. One side of the wireless radiation module100where the radiation portion12is arranged toward the radiator200. The radiation portion12is used to generate signals to couple the radiator200spaced from the radiation portion and transmit and receive signals from the radiator200. Therefore, signals can be transmitted or received by the radiator200through the coupling between the radiation portion12and the radiator200. The wireless radiation module100can also utilize the switch of the active circuit13and cooperate with a matching circuit to switch between multiple radiation modes, thereby realizing multiple broadband operations.

For example, in one embodiment, when the wireless radiation module100includes three radiation portions12and is provided with the active circuit13, the three radiation portions12are arranged at intervals, and can be used to receive 4G/5G intermediate frequency (IF) signal (the frequency range is 1.7 GHz-2.2 GHz), high frequency signal (the frequency range is 2.3 GHz-2.7 GHz), ultra-high band (UHB) signal (the frequency range is 3.3 GHz-4.8 GHz), GPS signal (the frequency range is 1.5 GHz-1.6 GHz), and WI-FI signal (the frequency range is 2.4 GHz, 5 GHz).

The embodiment of the present disclosure does not limit the possible frequencies of the wireless radiation module100. For example, the required frequency can be achieved by adjusting the shape, length, width and other parameters of the wireless radiation module100. The shape, length, width, and other parameters of the radiation portion12can also be adjusted for the required frequency.

In the embodiment, the radiator200can be any conductor, such as iron, copper foil on PCB flexible board, conductor in laser direct forming (LDS) process, etc., which is not specifically limited here. For example, in one embodiment, the radiator200is a metal frame of an electronic device, and the radiator200is arranged on a backplane305and spaced from an electronic component (such as battery303). The wireless radiation module100is arranged between the radiator200and the battery303. The battery303is arranged on a middle frame307. The middle frame307is arranged on the backplane305.

In the embodiment, the radiation portion12is arranged at intervals from the radiator200. For example, the radiation portion12is arranged parallel to the radiator200. As another example, the radiation portion12is arranged at intervals from the radiator200, but not parallel to each other. In other embodiment, the radiation portion12can also be directly connected or unconnected with the radiator200. In one embodiment, the radiation portion12is arranged at intervals from the radiator200and is connected to the radiator200through a connecting line. In another embodiment, the radiation portion12and the radiator200are arranged at intervals, and there is no electrical connection between the radiation portion12and the radiator200.

The embodiment of the present disclosure does not limit the specific structure of the radiator200or the connection relationship between the radiator200and other elements. For example, the side end of the radiator200may be connected to ground (the radiator200is thus grounded) or may be unconnected with ground. As another example, there may be or may not be breakpoints, slots, and gaps defined on the radiator200.

Referring toFIG.6, in the embodiment, the wireless radiation module100can be applied to an electronic device300, and the electronic device300can transmit and receive radio waves to transmit and exchange radio signals. The electronic device300can be a handheld communication device (such as a mobile phone), a foldable phone, an intelligent wearable device (such as a watch, headphones), a tablet computer, a personal digital assistant (PDA), there are no specific restrictions here.

The electronic device300may adopt one or more of the following communication technologies: BLUETOOTH (BT) communication technology, global positioning system (GPS) communication technology, WI-FI communication technology, global system for mobile communications (GSM) communication technology, wideband code division multiple access (WCDMA) communication technology, long term evolution (LTE) communication technology, 5G communication technology, SUB-6G communication technology, and other communication technologies are envisaged.

The embodiment of the present disclosure takes a mobile phone as an example of the electronic device300.

Referring again toFIG.6, in one embodiment, the electronic device300includes at least a battery303, a frame304, a backplane305, a ground plane306, and a middle frame307(shown inFIG.5).

The frame304is made of metal or other conductive material. The backplane305may be made of metal or other conductive material. The frame304is arranged on the edge of the backplane305and forms a receiving space308together with the backplane305. One side of the frame304opposite to the backplane305can define an opening (not shown) for receiving a display unit (not shown). The display unit includes a display plane, and the display plane is exposed in the opening. The display unit can be combined with a touch sensor to form a touch screen, the touch sensor can also be called touch panel or touch sensitive panel.

In the embodiment, the display unit has a high screen-size proportion. The area of the display plane of the display unit is greater than 70% of the frontal area of the electronic device, and even a full frontal screen can be achieved. In the embodiment of the present disclosure, the full screen means that the left, right and lower sides of the display unit can be seamlessly connected to the frame304except for the necessary buttons or other slots on the electronic device300.

The ground plane306may be made of metal or other conductive material. The ground plane306can be arranged in the receiving space308surrounded by the frame304and the backplane305, and the ground plane306is connected to the backplane305.

The middle frame307is made of metal or other conductive material. The shape and size of the middle frame307may be smaller than the ground plane306. The middle frame307is superimposed on the ground plane306. In the embodiment, the middle frame307is a metal sheet arranged between the display unit and the ground plane306. The middle frame307is used to support the display unit, provide electromagnetic shielding, and improve the structural strength of the electronic device300.

In the embodiment, the frame304, the backplane305, the ground plane306, and the middle frame307can form an integrated metal frame. The backplane305, the ground plane306and the middle frame307are large areas of metal, and the backplane305, the ground plane306, and the middle frame307can jointly form a system ground plane (not shown) of the electronic device300.

The battery303is arranged on the middle frame307to provide electrical energy for the electronic components, modules, and circuits of the electronic device300. The battery303and the frame304are arranged at intervals, and a slit309is formed between the battery303and the frame304.

In other embodiment, the electronic device300may also include one or more components, such as a processor, a circuit board, a memory, an input/output circuit, an audio component (such as a microphone, a speaker, etc.), a multimedia component (such as a front camera and/or a rear camera). Sensory components (such as proximity sensor, distance sensor, ambient light sensor, acceleration sensor, gyroscope, magnetic sensor, pressure sensor and/or temperature sensor, etc.) can also be included.

When the wireless radiation module100is applied to the electronic device300, the wireless radiation module100can be arranged in the slit309, roughly perpendicular to the plane of the ground plane306. A part of the frame304forms the radiator200. The frame304defines a gap310separating and dividing the frame304into a first part311and a second part312. The first part311forms the radiator200. The second part312may be electrically connected to the system ground, such as the ground306, and the second part312is grounded.

In one embodiment, the gap310can be connected to the slit309and infilled with insulating materials, such as, but not limited to, plastic, rubber, glass, wood, ceramics, etc.

In one embodiment, a grounding point313is defined on the side of the first part311(i.e. the radiator200) away from the gap310. A first end of the grounding point313is electrically connected to the first part311, and a second end of the grounding point313is electrically connected to the middle frame307, that is, the second end of the grounding point313is grounded. The wireless radiation module100is arranged in the slit309between the gap310and the grounding point313, and the wireless radiation module100is roughly perpendicular to the plane of the ground plane306.

When the wireless radiation module100is arranged in the slit309, the radiation portion12, which is on the wireless radiation module100, faces toward the first part311and is arranged at intervals from the first part311. The connector14is arranged on the other surface of the substrate11, the connector14is arranged away from the first part311. One end of the connector14is electrically connected to the middle frame307, and the other end is electrically connected to the substrate11.

Referring toFIG.7andFIG.8, in the embodiment, the wireless radiation module100includes three radiation portions12. Each radiation portion12includes corresponding feed points (such as feed points port1, port2, and port3). Each feed point is electrically connected to the corresponding feed source through the corresponding matching unit. For example, the matching circuit includes at least a matching unit151, a matching unit152, and a matching unit153. The feed point port1is electrically connected to the feed source161through the matching unit151. The feed point port2is electrically connected to the feed source162through the matching unit152. The feed point port3is electrically connected to the feed source163through the matching unit153.

As shown inFIG.7, the active circuit13in the wireless radiation module100is arranged in the connector14. As shown inFIG.8, the active circuit13includes a switch131, an adjustable element132, an adjustable element133, and an adjustable element134. One end of the switch131is electrically connected to the connector14, and the other end is electrically connected to the feed sources through the adjustable elements132,133, and134. For example, the switch131is electrically connected to the feed source161through the adjustable element132, the switch131is electrically connected to the feed source162through the adjustable element133, and the switch131is electrically connected to the feed source163through the adjustable element134.

The embodiment of the present disclosure couples the radiation portion12with the first part311to resonate with adjustable radiation modes. The embodiment of the present disclosure can also control the coupling between two adjacent radiation portions12and generate independent radiation modes with adjustable and good antenna efficiency through coupling. The embodiment of the present disclosure can also switch between multiple radiation modes through the switching of the switch131in the active circuit13and realize multiple radiation frequency band coverage using a plurality of adjustable elements (such as adjustable elements132,133,134).

For example, referring toFIG.9, current paths of the electronic device300are shown.

The radiation portion12(the radiation portion12provided with the feed point port3is hereinafter referred to as the first radiation portion for convenience of description) far away from the gap310can excite WI-FI 2.4G (shown in path P1), WI-FI 5G (shown in path P2) and license assisted access (LAA) radiation modes. The embodiment of the present disclosure can apply the slit309to couple and resonate the WI-FI 2.4G, WI-FI 5G and LAA frequency bands, with the best antenna efficiency, so that the working frequency range of the first radiation portion can cover the WI-FI 2.4G frequency band (2400 MHz-2484 MHz), WI-FI 5G frequency band (5150 MHz-5850 MHz) and LAA frequency band (5150 Mhz-5925 Mhz).

The radiation portion12(the radiation portion12provided with the feed point port2, hereinafter referred to as the second radiation portion for convenience of description) located in the middle can excite the ultra-high frequency (UHB) radiation mode and 5G Sub 6 NR radiation mode (shown in path P3). The embodiment of the present disclosure can apply the slit309to couple and resonate the UHB band and 5G Sub 6 NR band, with the best antenna efficiency, so that the working frequency range of the second radiation portion can cover the UHF band (3400 MHz-3800 MHz) and 5G Sub 6 NR band (for example, 5G Sub6 N77 band (3300 Mhz-4200 Mhz), 5G Sub 6 N78 band (3300 MHz-3800 MHz) and 5G Sub 6 N79 band (4400 MHz-5000 MHz).

The radiation portion12(the radiation portion12provided with the feed point port1, is hereinafter referred to as the third radiation portion for convenience of description) close to one side of the gap310can excite the medium and high frequency radiation modes (shown in path P4). The embodiment of the present disclosure can apply the slit309to couple and resonate the medium and high radiation frequency band, with the best antenna efficiency. The working frequency range of the third radiation portion can cover the medium frequency GSM1800/1900/WCDMA2100 radiation frequency band (1710 MHz-2170 Mhz) and the high frequency LTE B7, B40 and B41 radiation frequency bands (2300 Mhz-2690 MHz).

The switch131is a switch for medium and high frequency, UHB and NR, and WI-FI 2.4G WI-FI 5G and LAA, the switch131is used to switch between medium and high frequency, UHB and NR, and WI-FI 2.4G WI-FI 5G and LAA radiation frequency bands.

The wireless radiation module100of the present disclosure can be applied to the electronic device300to improve the antenna efficiency bandwidth and have the best antenna efficiency, and the switching provided by the switch131can effectively improve the antenna frequency coverage. In one embodiment, the working frequency range applicable to the wireless radiation module100covers medium frequency 1710 MHz to 2170 MHz, high frequency 2300 MHz-2690 MHz, UHF 3400 MHz to 3800 MHz, WI-FI 2.4G and 5G; and LAA, and can support 5G Sub6 N77/N78/N79 radiation frequency bands.

The wireless radiation module100sets a corresponding feed point at the appropriate position of the radiation portion12, and uses the radiator200(which can also be the metal frame of the electronic device300, such as the first part311) as the metal radiator, and the radiation mode is achieved by coupling the radiator200with the wireless radiation module100in the slit309. This covers medium, high frequency, ultra-high frequency, 5G Sub 6 N77, 5G Sub 6 N78, 5G Sub 6 N79, WI-FI 2.4G and 5G frequency bands, so as to greatly improve their bandwidth and antenna efficiency, it can also cover the applications of 5G communication frequency bands commonly used in the world and the requirements of carrier aggregation (CA) supporting LTE-A (short name for LTE Advanced, which is the subsequent evolution of LTE technology).

FIGS.10-13show graphs of S parameters (scattering parameters) when the wireless radiation module100is provided with three radiation portions.FIG.10is a graph of S parameters of the second radiation portion in the wireless radiation module100.FIG.11is a graph of S parameters of the second radiation portion and the third radiation portion in the wireless radiation module100. The curve S111is the S11 value of the second radiation portion in the wireless radiation module100. The curve S112is the S11 value of the third radiation portion in the wireless radiation module100. FIG.12is a graph of S parameters of the first radiation portion, the second radiation portion and the third radiation portion in the wireless radiation module100. The curve S121is the S11 value of the first radiation portion in the wireless radiation module100. The curve S122is the S11 value of the second radiation portion in the wireless radiation module100. The curve S123is the S11 value of the third radiation portion in the wireless radiation module100.FIG.13is a graph of S parameters when the wireless radiation module100is provided with three radiation portions and another matching circuit is adopted. The curve S131is the S11 value of the first radiation portion in the wireless radiation module100. The curve S132is the S11 value of the second radiation portion in the wireless radiation module100. The curve S133is the S11 value of the third radiation portion in the wireless radiation module100.

FIGS.14-17are graphs showing efficiency curves when the wireless radiation module100is provided with three radiation portions.FIG.14is a graph showing efficiency curve of the second radiation portion in the wireless radiation module100. The curve S141is the total efficiency value of the second radiation portion in the wireless radiation module100. The curve S142is the radiation efficiency value of the second radiation portion in the wireless radiation module100.

FIG.15is a graph showing efficiency curve of the second radiation portion and the third radiation portion in the wireless radiation module100. The curve S151is the total efficiency value of the second radiation portion in the wireless radiation module100. The curve S152is the radiation efficiency value of the second radiation portion in the wireless radiation module100. The curve S153is the total efficiency value of the third radiation portion in the wireless radiation module100. The curve S154is the radiation efficiency value of the third radiation portion in the wireless radiation module100.

FIG.16is a graph showing efficiency curve of the first radiation portion, second radiation portion and third radiation portion in the wireless radiation module100. The curve S161is the total efficiency value of the first radiation portion in the wireless radiation module100. The curve S162is the radiation efficiency value of the first radiation portion in the wireless radiation module100. The curve S163is the total efficiency value of the second radiation portion in the wireless radiation module100. The curve S164is the radiation efficiency value of the second radiation portion in the wireless radiation module100. The curve S165is the total efficiency value of the third radiation portion in the wireless radiation module100. The curve S166is the radiation efficiency value of the third radiation portion in the wireless radiation module100.

FIG.17is an efficiency curve when the wireless radiation module100is provided with three radiation portions and another matching circuit is adopted. The curve S171is the total efficiency value of the first radiation portion in the wireless radiation module100. The curve S172is the radiation efficiency value of the first radiation portion in the wireless radiation module100. The curve S173is the total efficiency value of the second radiation portion in the wireless radiation module100. The curve S174is the radiation efficiency value of the second radiation portion in the wireless radiation module100. The curve S175is the total efficiency value of the third radiation portion in the wireless radiation module100. The curve S176is the radiation efficiency value of the third radiation portion in the wireless radiation module100.

The present disclosure controls the frequency radiation mode by setting the switch131to switch to different feed points, so as to cover the medium frequency (1710 MHz-2170 MHz), high frequency (2300 MHz-2690 MHz), UHF (3400 MHz-3800 MHz), WI-FI 2.4G and 5G and LAA, and can support 5G Sub 6 N77/N78/N79 radiation frequency bands.

Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will, therefore, be appreciated that the exemplary embodiments described above may be modified within the scope of the claims.