CN211350951U

CN211350951U - Antenna assembly and electronic equipment

Info

Publication number: CN211350951U
Application number: CN202020306585.0U
Authority: CN
Inventors: 杨帆
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-08-25
Anticipated expiration: 2030-03-12

Abstract

The present application relates to an antenna assembly and an electronic device, the antenna assembly comprising: the conductive frame is provided with at least one gap, the gap divides the conductive frame into at least a first conductive branch and a second conductive branch which are independent, the first conductive branch is provided with a first feed point, and the second conductive branch is provided with a second feed point; the filtering module comprises a first filtering circuit and a second filtering circuit; a feeding module including a first feeding circuit and a second feeding circuit; the first feed circuit is coupled and fed with a switchable first current signal to the first conductive branch through the first filter circuit and the first feed point, so that a first radiator on the first conductive branch can switchably radiate first radio-frequency signals of different frequency bands; the second feed circuit feeds a second current signal to the second conductive branch through the second filter circuit and the second feed point, so that the second radiator on the second conductive branch radiates a second radio-frequency signal, and the space utilization rate of the gap and the conductive frame can be improved under the condition of not influencing the performance of the antenna.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to the field of antenna technology, and in particular, to an antenna assembly and an electronic device.

Background

With the development of wireless communication technology, users have increasingly high requirements on the portability and appearance of electronic devices. An antenna of an electronic device having a metal bezel is mainly implemented based on the metal bezel, and a profile height of the metal bezel is one of main factors affecting radiation efficiency thereof. The cross-sectional height of the metal frame of the electronic device can be understood as the metal width of the metal frame in the thickness direction of the mobile phone. With the trend of pursuing the appearance of the mobile phone, the design of the low profile bezel presents a new challenge to the antenna performance.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an antenna assembly and electronic equipment, and the space utilization rate of a gap and a conductive frame can be improved under the condition that the performance of the antenna is not influenced.

An antenna assembly, comprising:

the conductive frame is provided with at least one gap, and the gap divides the conductive frame into at least a first conductive branch and a second conductive branch which are independent, wherein a first feed point is arranged on the first conductive branch, and a second feed point is arranged on the second conductive branch;

the filtering module comprises a first filtering circuit and a second filtering circuit;

a feeding module including a first feeding circuit and a second feeding circuit; wherein the content of the first and second substances,

the first feed circuit is used for coupling and feeding a switchable first current signal to the first conductive branch through the first filter circuit and the first feed point, so that a first radiator on the first conductive branch can switchably radiate first radio-frequency signals of different frequency bands;

the second feed circuit feeds a second current signal to the second conductive branch through the second filter circuit and the second feed point, so that a second radiator on the second conductive branch radiates a second radio-frequency signal, wherein when the first radiator radiates the first radio-frequency signal of different frequency bands in a switchable manner, a working frequency band of the second radio-frequency signal radiated by the second radiator is kept unchanged.

An electronic device, comprising: a substrate; and an antenna assembly as described above; the substrate is accommodated in a cavity formed by the surrounding of the conductive frame, and the filtering module and the feeding module are arranged on the substrate.

According to the antenna assembly and the electronic equipment, the first conductive branch and the second conductive branch share the same gap so as to simultaneously realize radiation of the first radio-frequency signal and the second radio-frequency signal, and the space utilization rate of the gap and the conductive frame in the electronic equipment can be improved. Meanwhile, an antenna radiator does not need to be designed independently, and the thickness of the mobile phone is reduced. In addition, when the first radiator switchably radiates the first radio frequency signals of different frequency bands, the working frequency band of the second radio frequency signal radiated by the second radiator remains unchanged, so as to improve the performance of the antenna assembly, and meanwhile, the first radiator and the second radiator can be integrated on a top frame or a bottom frame of the electronic device, so that the pressure of the antenna assembly integrated on the side frame can be reduced, and the section height of the side frame can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an electronic device according to an embodiment;

FIG. 2 is a diagram illustrating a first structure of an antenna assembly in an electronic device according to an embodiment;

FIG. 3 is a second diagram illustrating an antenna assembly of the electronic device according to an embodiment;

FIG. 4 is a diagram illustrating a third structure of an antenna assembly in an electronic device according to an embodiment;

FIG. 5 is a fourth diagram illustrating an antenna assembly of the electronic device in an embodiment;

FIG. 6 is a diagram illustrating simulation of an antenna assembly in an electronic device, in accordance with an embodiment;

fig. 7 is a fifth structural diagram of an antenna assembly in an electronic device according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood that when an element is referred to as being "attached" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The antenna assembly of an embodiment of the present application is applied to an electronic Device, and in an embodiment, the electronic Device may be a communication module including a Mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable Device (e.g., a smart watch, a smart bracelet, a pedometer, etc.), or other configurable array antenna assemblies.

As shown in FIG. 1, in an embodiment of the present application, the electronic device 10 may include a conductive bezel 110, a rear cover, a display screen assembly 120, a substrate 130, and radio frequency circuitry. The display screen assembly 120 is fixed to the housing assembly formed by the conductive bezel 110 and the rear cover, the display screen assembly 120 and the housing assembly together form an external structure of the electronic device 10, and the display screen assembly 120 can be used for displaying pictures or fonts and can provide an operation interface for a user.

The back cover is used to form the outer contour of the electronic device 10. The rear cover may be integrally formed. In the forming process of the rear cover, structures such as a rear camera hole, a fingerprint identification module, an antenna assembly mounting hole and the like can be formed on the rear cover. Wherein, the back lid can be behind the nonmetal lid, for example, the back lid can be behind the plastic lid, the lid behind the pottery, the lid behind the 3D glass etc..

In one embodiment, the conductive frame 110 may be a frame structure with through holes. The material of the conductive frame 110 may include a metal frame made of aluminum alloy, magnesium alloy, or the like.

In one embodiment, the conductive frame 110 is a rounded rectangular frame, wherein the conductive frame 110 may include a first frame and a third frame that are disposed opposite to each other, and a second frame and a fourth frame that are disposed opposite to each other, and the second frame is connected to the first frame and the third frame, respectively. Wherein the first frame may be understood as a top frame of the electronic device 10, the third frame may be understood as a bottom frame of the electronic device 10, and the second frame and the fourth frame may be understood as side frames of the electronic device 10.

The antenna assembly may be partially or entirely formed by a portion of the conductive bezel 110 of the electronic device 10. Illustratively, the radiator of the antenna assembly may be partially or integrally formed on at least one of the top, bottom, and side frames of the electronic device 10.

The substrate 130 may be received in a receiving space formed by the conductive bezel 110 and the rear cover. The substrate 130 may be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). A part of a radio frequency circuit for processing an antenna signal, a controller capable of controlling the operation of the electronic device 10, and the like may be integrated on the substrate 130. The radio frequency circuits include, but are not limited to, an antenna assembly, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the radio frequency circuitry may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE)), e-mail, Short Messaging Service (SMS), and the like.

As shown in fig. 2, the present application provides an antenna assembly, wherein the antenna assembly includes a conductive bezel 110, a filtering module 210, and a feeding module 220.

The conductive frame 110 is provided with at least one slit 111, and the slit 111 divides the conductive frame 110 into at least a first conductive branch 113 and a second conductive branch 115 which are independent.

In one embodiment, the slot 111 is included as a part of the antenna assembly, and the slot 111 may be understood as a broken slot that divides the conductive bezel 110 into at least two separate conductive branches. Illustratively, one slot 111 is used to divide the conductive bezel 110 into separate first conductive branches 113 and second conductive branches 115. When the number of the slits 111 is N, the conductive bezel 110 may be divided into N +1 independent conductive branches.

In one of the embodiments, the slot 111 may be filled with air, plastic, and/or other dielectric.

In one embodiment, the shape of the slot 111 may be straight or may have one or more curved shapes.

It should be noted that the slit 111 may be opened at any position of the conductive frame 110. In the embodiment of the present application, the shape, size, and number of the slits 111 and the positions of the slits 111 opened to the conductive bezel 110 are not further limited.

Each conductive branch can be correspondingly provided with a feed point. The first conductive branch 113 is provided with a first feed point S1, and the second conductive branch 115 is provided with a second feed point S2.

The filtering module 210 includes a first filtering circuit 211 and a second filtering circuit 213. The first filter circuit 211 is configured to filter out radio frequency signals outside a frequency corresponding to the first radio frequency signal, so that the first radio frequency signal is in a conducting state when flowing through the first filter circuit 211. The second filter circuit 213 is used for filtering the rf signals outside the frequency corresponding to the second rf signal, so that the second rf signal is turned on when passing through the first filter circuit 211.

A feeding module 220 including a first feeding circuit 221 and a second feeding circuit 223; the first feeding circuit 221 couples and feeds a switchable first current signal to the first conductive branch 113 through the first filter circuit 211 and the first feeding point S1, so that the first radiator on the first conductive branch 113 can switchably radiate first radio frequency signals of multiple operating bands of different bands; the second feeding circuit 223 feeds a second current signal to the second conductive branch 115 through the second filter circuit 213 and the second feeding point S2, so that a second radiator on the second conductive branch 115 radiates a second radio frequency signal, wherein when the first radiator switchably radiates the first radio frequency signal in different frequency bands, a working frequency band of the second radio frequency signal radiated by the second radiator remains unchanged. The operating frequency band of the first radio frequency signal is different from the operating frequency band of the second radio frequency signal.

In one embodiment, the first radio frequency signal may include radio frequency signals of different frequency bands, for example, the first radio frequency signal may include an LTE signal and a 5G signal. Specifically, the working frequency bands of the first radio frequency signal at least include two working frequency bands of a 5G signal and two working frequency bands of an LTE signal

LTE signals can be divided into Low Band (LB), Medium Band (MB), and High Band (HB). In the embodiment of the present application, the first radiator of the first conductive branch 113 may correspondingly radiate the intermediate frequency radio frequency signal and the high frequency radio frequency signal in the LTE signal under the excitation of the first feeding circuit 221. The intermediate frequency radio frequency signal comprises a frequency range of 17MHz to 2170MHz, and the high frequency radio frequency signal comprises a frequency range of 2300MHz to 2690 MHz.

The working frequency bands of the 5G signals may at least include an N78 frequency band and an N79 frequency band, wherein the N78 frequency band may be 3.3GHz to 3.6GHz, and the frequency range of the N79 frequency band may be 4.8GHz to 5 GHz.

Therefore, the first radiator can be used for realizing the radiation and reception of radio frequency signals corresponding to N78 and N79 in a 5G working frequency band, and can also be used for realizing the radiation and reception of medium-frequency and high-frequency radio frequency signals in an LTE signal.

In one embodiment, the second radio frequency signal comprises a satellite positioning signal. The Satellite positioning signal includes a Global Positioning System (GPS) signal having a frequency range of 1.2GHz to 1.6GHz, a BeiDou Navigation Satellite System (BDS) signal, and at least one of a GLONASS Satellite Navigation System (GLONASS) signal. For example, the second radiator may be used to radiate radio frequency signals of a GPS L1 frequency band or a GPS L5 frequency band.

The antenna assembly can maintain the resonant frequency of the GPS L1 or the GPS L5 to be constant all the time when the antenna assembly radiates the first radio frequency signal, so that the cellular network and the GPS can work simultaneously without mutual influence.

In this embodiment, the antenna assembly includes a conductive frame 110, a slot 111 is formed in the conductive frame 110, the slot 111 divides the conductive frame 110 into a first conductive branch 113 and a second conductive branch 115, wherein the first conductive branch 113 is provided with a first feed point S1, the second conductive branch 115 is provided with a second feed, and the first feed circuit 221 couples and feeds a switchable first current signal to the first conductive branch 113 through the first filter circuit 211 and the first feed point S1, so that the first radiator on the first conductive branch 113 radiates a first radio frequency signal having multiple working bands; the second feeding circuit 223 feeds a second current signal to the second conductive branch 115 through the second filter circuit 213 and the second feeding point S2, so that a second radiator on the second conductive branch 115 radiates a second radio frequency signal, wherein when the first radiator switchably radiates the first radio frequency signal in different frequency bands, a working frequency band of the second radio frequency signal radiated by the second radiator remains unchanged. That is, in this example, the first conductive branch 113 and the second conductive branch 115 share the same slot 111 to simultaneously radiate the first radio frequency signal and the second radio frequency signal, which can improve the space utilization of the slot 111 and the conductive frame 110 in the electronic device 10. Meanwhile, an antenna radiator does not need to be designed independently, and the thickness of the mobile phone is reduced.

For example, the first radiator and the second radiator may be integrated in the first bezel or the third bezel of the electronic device 10, so as to improve the utilization rate of the top bezel or the bottom bezel, and further reduce the pressure for integrating the antenna assembly in the side bezel, so as to reduce the profile height of the side bezel, and reduce the profile height of the side bezel to within 1 mm. The cross-sectional height of the side frame can be understood as the metal width of the conductive frame 110 in the thickness direction of the electronic device 10, and the cross-sectional height of the conductive frame 110 is one of the main factors affecting the radiation efficiency. Under the background that the side surface bending radian of the curved surface screen is larger and larger, even if the antenna clearance of the side frame for integrating the antenna is greatly reduced, the antenna assembly can be integrated on the top frame or the bottom frame, and the flexibility and the performance of the antenna assembly cannot be influenced.

In one embodiment, the first conductive branch 113 is further provided with a first return point G1, the first feed point S1 is disposed close to the slot 111, and the first return point G1 is disposed far from the slot 111. The first conductive branch 113 between the first feed point S1 and the first return point G1 constitutes the first radiator.

The first feeding circuit 221 and the first filter circuit 211 may be disposed on the substrate 130, and the first filter circuit 211 may be connected to the first conductive branch 113 through the first feeding portion 251, where a coupling point of the first feeding portion 251 and the first conductive branch 113 may be used as a first feeding point S1. The first feeding portion 251 may be a conductive elastic sheet or a screw coupler, and specifically, the first feeding point S1 may be connected to the first filter circuit 211 through the conductive elastic sheet or the screw. The first current signal output by the first feeding circuit 221 may be fed to the first conductive branch 113 through the first filter circuit 211 in a feeding manner of a spring or a screw, so as to generate radiation, i.e., to radiate a first rf signal having a plurality of different operating bands.

In one embodiment, the first recovery point G1 may be connected to the ground of the substrate 130 through the first connection 252 to achieve communication with ground. The first connection portion 252 may be a conductive body such as a spring plate or a screw, or a flexible circuit board, and the first connection portion 252 may also be a connection arm made of the same material as the first conductive branch 113. Illustratively, the first connection portion 252 and the first conductive branch 113 may be integrally formed, so as to simplify the structure of the antenna assembly.

In one embodiment, the second conductive branch 115 is further provided with a second return point G2, the second feed point S2 is disposed close to the slot 111, and the second return point G2 is disposed far from the slot 111. The second conductive branch 115 between the second feed point S2 and the second return point G2 constitutes the second radiator.

Wherein the second feeding circuit 223 and the second filter circuit 213 can be disposed on the substrate 130, and the second filter circuit 213 can be coupled to the second conductive branch 115 through the second feeding portion 253, wherein a coupling point of the second feeding portion 253 and the second conductive branch 115 can be used as the second feeding point S2. For example, the second feeding portion 253 may be a conductive elastic piece or a screw, and the second feeding point S2 thereof may be connected to the second filter circuit 213 through the conductive elastic piece or the screw. The second current signal output by the second feeding circuit 223 can be fed to the second conductive branch 115 through the second filter circuit 213 by the feeding method of the shrapnel or the screw through the second feeding point S2, so as to excite a quarter or other mode of current on the second radiator, thereby generating radiation, i.e., radiating the second radio frequency signal.

In one embodiment, the second return point G2 can be connected to the ground of the substrate 130 through the second connection 253 to achieve communication with the ground. The second connection portion 254 may be a conductive body such as a spring plate or a screw, or a flexible circuit board, and the second connection portion 254 may also be a connection arm made of the same material as the second conductive branch 115. For example, the second connection portion 254 and the second conductive branch 115 may be integrally formed to simplify the structure of the antenna assembly.

The length of the second radiator can be changed to change the operating frequency band of the second radiator for radiating the second radio frequency signal. For example, when the second radiator is used to radiate the second radio frequency signal of the GPS L1 frequency band, the length of the second radiator may be defined as the first length; when the second radiator is used for radiating the second radio frequency signal of the GPS L5 frequency band, the length of the second radiator may be defined as a second length. Wherein the second length is greater than the first length. Of course, in order to enable the second radiator to radiate the second radio frequency signal in the GPS L5 frequency band, on the basis of radiating the second radio frequency signal in the GPS L1 frequency band, in addition to the length of the second radiator, parameters of each of the second filter circuit 213 and the second feed circuit 223 need to be adjusted correspondingly.

It should be noted that the longer the radiator is, the lower frequency band can be covered, and the high frequency band has no high requirement on the size of the radiator. The lengths of the first radiator and the second radiator can be adjusted according to the working frequency bands of the first radio frequency signal and the second radio frequency signal.

It is to be understood that the first radiator may also be used to implement reception of the first radio frequency signal, and the second radiator may also implement reception of the second radio frequency signal, so that input (reception) and output (radiation) of the first radio frequency signal and the second radio frequency signal may be implemented by the first radiator and the second radiator.

As shown in fig. 3, in one embodiment, the first filter circuit 211 is a high-pass filter circuit. The high-pass filter circuit can be understood as a state that the first rf signal passes through the first filter circuit 211, and blocks the non-first rf signal having a frequency lower than the frequency corresponding to the first rf signal from passing through the first filter circuit 211.

Specifically, the first filter circuit 211 includes a first capacitor C1 and a first inductor L1, wherein a first end of the first capacitor C1 is connected to a first end of the first inductor L1 and a first feeding point S1, respectively, and another end of the first capacitor C1 is connected to the first feeding circuit 221; the second end of the first inductor L1 is grounded.

The high-pass filter circuit may be formed by other devices, and is not limited to the example of the embodiment of the present application.

In one embodiment, the second filter circuit 213 is a low-pass filter circuit. The low-pass filter circuit can be understood as a state that the second rf signal passes through the second filter circuit 213, and blocks the non-second rf signal having a frequency higher than the frequency corresponding to the second rf signal from passing through the second filter circuit 213.

Specifically, the second filter circuit 213 includes a second capacitor C2 and a second inductor L2, wherein a first end of the second inductor L2 is connected to a first end of the second capacitor C2 and a second feed point S2, respectively, and another end of the second inductor L2 is connected to the second feed circuit 223; the second end of the second inductor L2 is grounded.

The low-pass filter circuit may be formed by other devices, and is not limited to the example of the embodiment of the present application.

As shown in fig. 4 and 5, in one embodiment, the antenna assembly further includes a switching module 230. The switching module 230 is respectively connected to the first feed point S1 and the first filter circuit 211, and is configured to adjust a first current signal fed to the first feed point S1 to feed a switchable first current signal to the first conductive branch 113, so that the first conductive branch 113 radiates a first radio frequency signal of any one of the operating frequency bands.

Referring to fig. 4, in one embodiment, the switching module 230 includes a switching unit 231 and a plurality of third capacitors (C3, C4, C5, C6). The switch unit 231 includes a control terminal and a plurality of selection terminals, and the control terminal is connected to the first feed point S1 and the first filter circuit 211 respectively; the selection terminal is grounded through the third capacitor.

Referring to fig. 5, in one embodiment, the third capacitor of the switching module 230 in the above example may be replaced by a third inductor. Specifically, the switching module 230 may include a switching unit 231 and a plurality of third inductors (L3, L4, L5, L6). The switch unit 231 includes a control terminal and a plurality of selection terminals, and the control terminal is respectively connected with the first feed point S1 and the first filter circuit 211; the selection terminal is grounded through the third inductor.

The number of the selection terminals of the switch unit 231 may be set according to the number of the working frequency bands that can be radiated by the first radiator. Specifically, the switch unit 231 may be a single-pole multi-throw switch, wherein a moving end of the single-pole multi-throw switch may serve as a control end of the switch unit 231, and a stationary end of the single-pole multi-throw switch may serve as a selection end of the switch unit 231. Each fixed end of the single-pole multi-throw switch is connected with a capacitor, and the capacitance values of the capacitors are different.

The switch unit 231 may include a plurality of single-pole single-throw switches, a plurality of single-pole double-throw switches, a plurality of electronic switching tubes, and the like. The electronic switching tube can be a MOS tube, a transistor, or the like. In the embodiment of the present application, the specific components of the switch unit 231 are not further limited, and it is sufficient that the switch selection condition of the plurality of third capacitors or the plurality of third inductors is satisfied.

When the first radiator of the antenna assembly needs to radiate first radio frequency signals of different working frequency bands, the switch unit 231 may be controlled to selectively conduct different tuning paths, so as to change the size of the third capacitor or the third inductor in the tuning path, and further adjust the working resonant frequency to feed a switchable first current signal into the first conductive branch 113, thereby implementing switching of different working frequency bands.

As shown in fig. 6, by providing the switching module 230 between the first feeding circuit 221 and the first filtering circuit 211, it may be used to switch multiple operating frequency bands (e.g., MHB, N78, N79 operating frequency bands) in the first radio frequency signal, and simultaneously keep the resonant frequency of the second radio frequency signal (e.g., GPS L1) constant, and at the same time, the radiation efficiency and the system efficiency of each operating frequency band (e.g., operating frequency bands B1, B3, B40, B41, N78, N79) both meet the communication requirement, so that the simultaneous operations of the cellular network and the GPS positioning do not affect each other.

It should be noted that a frequency in the range of 7-13% of the resonant frequency is understood as the operating bandwidth of the antenna. For example, the resonant frequency of the antenna is 1800MHz, the operating bandwidth is 10% of the resonant frequency, and the operating frequency band of the antenna is 1620MHz-1980 MHz.

As shown in fig. 7, in one embodiment, a first matching circuit 241 for adjusting the first radio frequency signal is further disposed between the first conductive branch 113 and the first feeding circuit 221; the first matching circuit 241 may be configured to adjust an input impedance of the first radiator to improve transmission performance of the first radiator.

A second matching circuit 243 for adjusting the second radio frequency signal is further arranged between the second conductive branch 115 and the second feeding circuit 223; the second matching circuit 243 may be configured to adjust an input impedance of the second radiator to improve transmission performance of the second radiator.

In particular, the first matching circuit 241 and the second matching circuit 243 may include a combination of capacitance and/or inductance, and the like. In the embodiment of the present application, the specific composition of the first matching circuit 241 and the second matching circuit 243 is not further limited.

It should be noted that the first feeding point S1 may be disposed near the slot 111, and the second feeding point S2 may also be disposed near the slot 111. It is understood that the specific position of the first feed point S1 is associated with the first matching circuit 241, that is, the specific position of the first feed point S1 can be set according to the first matching circuit 241, and correspondingly, the specific position of the second feed point S2 is associated with the second matching circuit 243, that is, the specific position of the second feed point S2 can be set according to the second matching circuit 243.

In one embodiment, the slot 111 is disposed on the conductive frame 110, so that the conductive frame 110 is divided into a first conductive branch 113 and a second conductive branch 115, a first current signal for exciting the first conductive branch 113 to resonate in the MHB band of LTE or the N78 and N79 bands of 5G NR is fed to a position where the first conductive branch 113 is close to the slot 111, and a second current signal for exciting the second conductive branch 115 to resonate in the GPS L1 or the GPS L5 band is fed to a position where the second conductive branch 115 is close to the slot 111, so that a common-aperture antenna design of dual conductive branches is implemented, so that the GPS, the MHB, the N78 and the N79 share one slot, and the slot and space utilization rate are improved.

In one embodiment, the conductive frame 110 has a plurality of slits 111. For example, two slits are taken as an example for explanation. The two gaps include a first gap and a second gap, wherein the first gap and the second gap can divide the conductive frame 110 into a first conductive branch, a second conductive branch and a third conductive branch, which are independent, and a feed point and a return point can be correspondingly arranged on each conductive branch. The first conductive branch may be integrated with a first radiator for radiating a first radio frequency signal, the second conductive branch may be integrated with a second radiator for radiating a second radio frequency signal, and the third conductive branch may be integrated with a third radiator for radiating a third radio frequency signal. The third rf signal may be a WIFI (WIreless-FIdelity) signal or a Bluetooth (Bluetooth) signal. Specifically, the operating frequency band of the WIFI signal may include 2.4GHz and 5GHz, and the operating frequency band of the Bluetooth signal may include 2.4 GHz.

Furthermore, each feed point can be connected to the filter circuit through a conductive elastic sheet or a screw, and the filter circuit is connected to the corresponding feed circuit. Each feed circuit can feed current to the corresponding conductive branch through the filter circuit, the conductive elastic sheet or the screw and the feed point, so that the current of a quarter or other modes is excited on the conductive branch (radiator) between the feed point and the return point, thereby generating radiation, namely radiating different radio frequency signals.

By analogy, when N (N >2) slots 111 are formed in the conductive frame 110, the conductive frame 110 can be divided into N +1 independent conductive branches, N +1 filter circuits and feed circuits can be correspondingly arranged, and N +1 radiators are correspondingly integrated on the N +1 independent conductive branches, so that N +1 radio frequency signals are radiated, and the working frequency bands of the radio frequency signals are different.

An embodiment of the present application further provides an electronic device 10, where the electronic device 10 includes a substrate 130 and an antenna assembly as in any of the above embodiments; the substrate 130 is accommodated in a cavity formed by the conductive frame 110, and the filtering module 210 and the feeding module 220 are disposed on the substrate 130.

When the antenna assembly is applied to the electronic device 10, the first conductive branch 113 and the second conductive branch 115 share the same slot 111 to simultaneously radiate the first radio frequency signal and the second radio frequency signal, so that the space utilization rate of the slot 111 and the conductive frame 110 in the electronic device 10 can be improved. Meanwhile, an antenna radiator does not need to be designed independently, and the thickness of the mobile phone is reduced.

For example, due to the adoption of a common-caliber antenna design, the GPS, the MHB, the N78 and the N79 share a gap, so that the first radiator and the second radiator can be integrated on the first frame or the third frame of the electronic device 10, the utilization rate of the top frame or the bottom frame can be improved, the pressure of the antenna assembly integrated on the side frame can be reduced, the section height of the side frame can be reduced, and the section height of the side frame can be reduced to be within 1 mm. The cross-sectional height of the side frame can be understood as the metal width of the conductive frame 110 in the thickness direction of the electronic device 10, and the cross-sectional height of the conductive frame 110 is one of the main factors affecting the radiation efficiency. Under the increasingly big background of the side curvature radian of curved surface screen, the section height of side frame is restricted to make the antenna headroom reduce by a wide margin, through adopting the design of the common-caliber antenna that provides in this application embodiment, can come integrated antenna module at top frame or bottom frame, guarantee that the antenna has sufficient headroom, and through the design of switching circuit, under the limited radiator length of top or bottom frame, satisfy the design demand of multifrequency section, multiaerial.

Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Suitable non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An antenna assembly, comprising:

2. The antenna assembly of claim 1, wherein the first filtering circuit is a high pass filtering circuit and the second filtering circuit is a low pass filtering circuit.

3. The antenna assembly of claim 2, wherein the first filter circuit comprises a first capacitor and a first inductor, wherein a first end of the first capacitor is connected to a first end of the first inductor and a first feed point, respectively, and another end of the first capacitor is connected to the first feed circuit; the second end of the first inductor is grounded; the second filter circuit comprises a second capacitor and a second inductor, wherein a first end of the second inductor is connected with a first end of the second capacitor and a second feed point respectively, and the other end of the second inductor is connected with the second feed circuit; and the second end of the second inductor is grounded.

4. The antenna assembly of claim 1, further comprising:

and the switching module is respectively connected with the first feed point and the first filter circuit and is used for adjusting a first current signal fed to the first feed point so that the first radiator radiates a first radio-frequency signal of any one working frequency band.

5. The antenna assembly of claim 4, wherein the switching module comprises:

a plurality of third capacitors, which are arranged in parallel,

the switch unit comprises a control end and a plurality of selection ends, and the control end is respectively connected with the first feed point and the first filter circuit; the selection terminal is grounded through the third capacitor.

6. The antenna assembly of claim 4, wherein the switching module comprises:

a plurality of third inductors are arranged on the first inductor,

the switch unit comprises a control end and a plurality of selection ends, and the control end is respectively connected with the first feed point and the first filter circuit; the selection terminal is grounded through the third inductor.

7. The antenna assembly of claim 1, wherein the first conductive branch further defines a first feedback point, the first feedback point is disposed proximate to the slot, the first feedback point is disposed distal to the slot and the first conductive branch between the first feedback point and the first feedback point forms the first radiator;

the second conductive branch node is further provided with a second return point, the second feed point is close to the gap, the second return point is far away from the gap, and the first conductive branch node between the second feed point and the second return point forms the second radiator.

8. The antenna assembly of claim 1, wherein a first matching circuit is further disposed between the first conductive branch and the first feed circuit for conditioning the first radio frequency signal; and a second matching circuit used for adjusting the second radio-frequency signal is also arranged between the conductive branch and the second feed circuit.

9. The antenna assembly of claim 1, wherein the operating bands of the first radio frequency signal comprise at least two operating bands for 5G signals and two operating bands for LTE signals; the second radio frequency signal comprises a satellite positioning signal.

10. An electronic device, comprising: a substrate; and an antenna assembly of any one of claims 1-9; the substrate is accommodated in a cavity formed by the surrounding of the conductive frame, and the filtering module and the feeding module are arranged on the substrate.