ANTENNA ASSEMBLY AND ELECTRONIC DEVICE

Provided is an antenna assembly including a conductive frame, and a resonance unit. The conductive frame is divided into first and second conductive branch by a slot. The resonance unit includes first and second resonance circuits. One terminal of the second resonance circuit is grounded, and another terminal is connected to the second conductive branch. A first signal source is capable of feeing a first current signal to the first conductive branch through the first resonance circuit and the first feeding point, enabling the first conductive branch to radiate a first radio frequency signal. The second signal source is capable of feeding a second current signal to the second conductive branch through the second feeding point, enabling the second conductive branch, under a resonance of the second resonance circuit, to radiate a second radio frequency signal.

FIELD

The present disclosure relates to the field of antenna technology, and more particularly, to an antenna assembly and an electronic device.

BACKGROUND

The statements herein merely provide background information related to the present disclosure, and do not necessarily constitute the prior exemplary art.

With the rapid development of the national economy, positioning technology has been widely used in many fields of national life and science and technology. Meanwhile, people's demand for positioning is becoming stronger and stronger, and people's demand for multi-band antennas is bigger and bigger.

General satellite positioning antennas use a GPS L1 frequency band. However, due to their own technical characteristics, the GPS L1 frequency band antenna is not accurate when used, which limits its application in the fields of navigation and motion recording. In order to improve a positioning accuracy, it is usually necessary to configure an additional antenna to receive dual-frequency positioning signals to increase the positioning accuracy of the GPS. However, the additionally configured antenna can only be moved to the non-clearance region of the electronic device, which may increase a space occupied by the antenna in the electronic device.

SUMMARY

According to various embodiments of the present disclosure, an antenna assembly and an electronic device are provided.

An antenna assembly includes: a conductive frame, a resonance unit, and a signal source unit. The conductive frame is divided into a first conductive branch and a second conductive branch by a slot. The first conductive branch is provided with a first feeding point. The second conductive branch is provided with a second feeding point. The resonance unit includes a first resonance circuit and a second resonance circuit. One terminal of the second resonance circuit is grounded, and another terminal of the second resonance circuit is connected to the second conductive branch. The signal source unit includes a first signal source and a second signal source. The first signal source is capable of feeding a first current signal to the first conductive branch through the first resonance circuit and the first feeding point, enabling the first conductive branch to radiate a first radio frequency signal at least including a first satellite positioning signal. The second signal source is capable of feeding a second current signal to the second conductive branch through the second feeding point, enabling the second conductive branch, under a resonance of the second resonance circuit, to radiate a second radio frequency signal at least including a second satellite positioning signal. An operating frequency band of the first satellite positioning signal is different from an operating frequency band of the second satellite positioning signal.

An electronic device includes: a substrate, a conductive frame, a resonance unit, and a signal source unit. The conductive frame is divided into a first conductive branch and a second conductive branch by a slot. The first conductive branch is provided with a first feeding point. The second conductive branch is provided with a second feeding point. The resonance unit includes a first resonance circuit and a second resonance circuit. One terminal of the second resonance circuit is grounded, and another terminal of the second resonance circuit is connected to the second conductive branch. The signal source unit includes a first signal source and a second signal source. The first signal source is capable of feeding a first current signal to the first conductive branch through the first resonance circuit and the first feeding point, enabling the first conductive branch to radiate a first radio frequency signal at least including a first satellite positioning signal. The second signal source is capable of feeding a second current signal to the second conductive branch through the second feeding point, enabling the second conductive branch, under a resonance of the second resonance circuit, to radiate a second radio frequency signal at least including a second satellite positioning signal. An operating frequency band of the first satellite positioning signal is different from an operating frequency band of the second satellite positioning signal. The substrate is accommodated in a cavity enclosed by the conductive frame. The resonance unit and the signal source unit are disposed on the substrate.

In the antenna assembly and the electronic device as described, the same slot is shared by the first conductive branch and the second conductive branch to simultaneously achieve radiation of the first satellite positioning signal and the second satellite positioning signal, which can achieve radiation of a dual-frequency satellite positioning signal to improve positioning accuracy while improving space utilization of the slot and the conductive frame in the electronic device. Meanwhile, the first radiator and the second radiator can be integrated on the top frame or the bottom frame of the electronic device, which in turn reduces challenge of integrating the antenna assembly on the side frame to reduce a cross-sectional height of the side frame.

The details of one or more embodiments of the present disclosure are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present disclosure will become apparent from the description, drawings and claims.

DESCRIPTION OF EMBODIMENTS

In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than limiting the present disclosure.

It should be understood that the terms “first,” “second,” etc. used in the present disclosure may be used herein to describe various elements, and these elements are not limited by these terms. These terms are only used to distinguish a first element from another element, and should not be construed to indicate or imply relative importance or to imply the number of indicated technical features. Thus, a feature associated with “first,” “second” may explicitly or implicitly include at least one of that features. In the description of the present disclosure, “plurality” means at least two, such as two, three, etc., unless explicitly and specifically defined otherwise.

It should be noted that when an element is referred to as being “attached to” another element, it may be directly on the other element or an intervening element may be present. When an element is referred to as being “connected” to another element, it may be directly connected to the other element or an intervening element may be present.

An antenna assembly according to an embodiment of the present disclosure is applied in an electronic device. In an embodiment, the electronic device may include a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Mobile Internet Device (MID), a wearable device such as a smart watch, a smart bracelet, a pedometer, etc., or other communication units provided with an array antenna assembly.

As illustrated inFIG.1, in the embodiment of the present disclosure, an electronic device10may include a conductive frame110, a back cover, a display screen assembly120, a substrate130, and a radio frequency circuit. The display screen assembly120is fixed on a housing assembly formed by the conductive frame110and the back cover. The display screen assembly120and the housing assembly are together formed as an external structure of the electronic device10. The display screen assembly120may be configured to display pictures or texts, and can provide a user an operation interface.

The back cover is configured to form an outer contour of the electronic device10. The back cover may be integrally formed. During forming the back cover, structures such as a rear camera hole, a fingerprint identification unit, an antenna assembly mounting hole and the like may be formed on the back cover. The back cover may be a non-metal back cover. For example, the back cover may be a plastic back cover, a ceramic back cover, a 3D glass back cover, or the like.

In an embodiment, the conductive frame110may be a frame structure having a through hole. The conductive frame110may be a metal frame made of aluminum alloy and magnesium alloy for example.

In an embodiment, the conductive frame110is a rounded rectangular frame. The conductive frame110may include a first frame110a, a second frame110b, a third frame110cdisposed opposite to the first frame110a, and a fourth frame110ddisposed opposite to the second frame110b. The second frame110bis connected to the first frame110aand the third frame110c, respectively. The first frame110amay be interpreted as a top frame of the electronic device10, and the third frame110cmay be interpreted as a bottom frame of the electronic device10. In addition, the second frame110band the fourth frame110dmay be interpreted as side frames of the electronic device10.

The antenna assembly may be partially or completely formed by a part of the conductive frame110of the electronic device10. Exemplarily, a radiator of the antenna assembly may be partially formed or integrated on at least one of the top frame, the bottom frame and the side frames of the electronic device10.

The substrate130may be accommodated in an accommodation space defined by the conductive frame110and the back cover. The substrate130may be a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC). Some of radio frequency circuits for processing radio frequency signals may be integrated on the substrate130, and a controller for controlling an operation of the electronic device10may be also integrated on the substrate130. The radio frequency circuit includes, but is 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 circuit can communicate with networks and other devices through wireless communication. The above wireless communication may employ any communication standard or protocol, including, but not limited to, Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

As illustrated inFIG.2, an antenna assembly is provided according to an embodiment of the present disclosure. The antenna assembly includes a conductive frame110, a resonance unit210, and a signal source unit220.

The conductive frame110has at least one slot111defined in the conductive frame110. The conductive frame110is divided by the at least one slot111at least into a first conductive branch113and a second conductive branch115that are independent from each other.

In an embodiment, the slot111is a part of the antenna assembly. The slot111may be interpreted as a broken slot, which can divide the conductive frame110into at least two separate conductive branches. Exemplarily, the conductive frame110can be divided by one slot at least into a first conductive branch113and a second conductive branch115that are independent from each other. When the at least one slot111includes N slots, the conductive frame110can be divided into N+1 conductive branches that are independent from each other.

In an embodiment, the slot111may be filled with air, plastic and/or other dielectrics.

In an embodiment, the slot111may have a straight shape, or may have one or more curved shapes.

It should be noted that the slot111may be defined at any position of the conductive frame110. In the embodiment of the present disclosure, the shape, size, and number of the slots111as well as the positions of the slots111on the conductive frame110are not limited.

Each conductive branch may be provided with a feeding point correspondingly. The first conductive branch113is provided with a first feeding point S1, and the second conductive branch115is provided with a second feeding point S2.

The resonance unit210includes a first resonance circuit211, and a second resonance circuit213.

The signal source unit220includes a first signal source221, and a second signal source223. The first signal source221is capable of outputting a first current signal fed to the first conductive branch113through the first resonance circuit211and the first feeding point S1sequentially. The second signal source223is capable of outputting a second current signal fed to the second conductive branch115through the second feeding point S2.

The first resonance circuit211is capable of filtering and tuning the received first current signal to allow the tuned first current signal to be fed to the first conductive branch113to generate at least one resonance frequency on the first conductive branch113. In this way, a first radiator on the first conductive branch113can radiate a first radio frequency signal at least including a first satellite positioning signal.

Further, the first resonance circuit211is also capable of filtering out a radio frequency signal within a frequency other than a frequency corresponding to the first current signal to bring the first current signal in an ON state when the first current signal flows through the first resonance circuit211.

One terminal of the second resonance circuit213is connected to the second conductive branch115, and another terminal of the second resonance circuit213is grounded. A connection between the second resonance circuit213and the second conductive branch115may be referred to as a connection point S3located between the first feeding point S1and the second feeding point S2. The second current signal is fed from the second signal source223to the second conductive branch115through the second feeding point S2, enabling the second conductive branch115, under a resonance of the second resonance circuit213, to radiate the second radio frequency signal at least including the second satellite positioning signal. It should be understood that the second resonance circuit213is also capable of filtering out a B41 resonance excited by the first conductive branch113.

In the above antenna assembly, the slot111is defined on the conductive frame110to allow the conductive frame110to be divided into the first conductive branch113and the second conductive branch115. In addition, through the first resonance circuit211, the first conductive branch113can radiate the first radio frequency signal at least including the first satellite positioning signal, and through the resonance of the second resonance circuit213, the second conductive branch115can radiate the second radio frequency signal at least including the second satellite positioning signal. In this way, a dual-frequency positioning function can be achieved by the first satellite signal and the second satellite signal, which greatly improves positioning accuracy and achieves centimeter-level positioning. Meanwhile, a common aperture antenna design of the dual conductive branches in the embodiment of the present disclosure can allow the first radio frequency signal and the second radio frequency signal to share one slot111, which can improve space utilization of the slot111and the conductive frame110in the electronic device10. Meanwhile, it is not necessary to design a single antenna radiator, thereby reducing a thickness of the mobile phone.

Exemplarily, the first conductive branch113and the second conductive branch115may be integrated on the first frame110aor the third frame110cof the electronic device10to improve utilization rate of the top frame or the bottom frame, which in turn reduces challenge of integrating the antenna assembly on the side frame to reduce a cross-sectional height of the side frame. The cross-sectional height of the side frame may be reduced to less than 1 mm. The cross-sectional height of the side frame may be interpreted as a metal width of the conductive frame110in a thickness direction of the electronic device10. The cross-sectional height of the conductive frame110is one of main factors affecting its radiation efficiency. Under the background that a side curvature of a curved screen is getting larger and larger, even if an antenna clearance of the side frame for integrating the antenna is greatly reduced, the antenna assembly may be integrated on the top frame or the bottom frame without affecting flexibility and performance of the antenna assembly.

In an embodiment, an operating frequency band of the first satellite positioning signal is an L1 (1575.42 MHz) frequency band, and an operating frequency band of the second satellite positioning signal is an L5 (1176.45 MHz) frequency band. In the embodiment of the present disclosure, the design of the common aperture antenna of the double conductive branches can simultaneously radiate the first satellite positioning signal (L1 frequency band) and the second satellite positioning signal (L5 frequency band) to achieve its dual-frequency positioning, which greatly improves the positioning accuracy and achieves the centimeter-level positioning. Meanwhile, the double conductive branches share one slot111, which can improve the space utilization of the slot111and the conductive frame110in the electronic device10.

It should be noted that, in the embodiment of the present disclosure, the operating frequency bands of the first satellite positioning signal and the second satellite positioning signal are not limited to the above examples. The operating frequency bands of the first satellite positioning signal and the second satellite positioning signal may include each operating frequency band of a BeiDou Navigation Satellite System (BDS) signal, a Global Navigation Satellite System (GLONASS) signal or other positioning signals.

In an embodiment, the first radio frequency signal also includes an LTE signal and WiFi that each have two operating frequency bands. The LTE signal may be divided into a low frequency signal (Low band, LB for short), a middle frequency signal (Middle band, MB for short), and a high frequency signal (High band, HB for short). In the embodiment of the present disclosure, the two operating frequency bands of the LTE signal may include the middle frequency signal and the high frequency signal. The middle frequency signal has a frequency range from 1710 MHz to 2170 MHz, and the high frequency signal has a frequency range from 2300 MHz to 2690 MHz.

The operating frequency of WiFi may include 2400 MHz to 5000 MHz. In the embodiment of the present disclosure, a first operating frequency band of WiFi may be 2.4 GHz.

In an embodiment, the second radio frequency signal also includes a 5G signal having two operating frequency bands. Specifically, the operating frequency band of the 5G signal may include at least an N78 frequency band and an N79 frequency band. The N78 frequency band has a frequency range from 3.3 GHz to 3.6 GHz, and the N79 frequency band may have a frequency range from 4.8 GHz to 5 GHz.

In the embodiment of the present disclosure, by means of the first resonance circuit211, the first current signal is fed into the first conductive branch113through the first feeding point S1, and a resonance frequency resonated in the MHB frequency band of LTE (including the MB and HB frequency bands of the LTE), the L1 frequency band of GPS and the 2.4G frequency band of WIFI can be excited on the first conductive branch113. In this way, at least two resonance frequencies of the MHB frequency band of the LTE, the L1 frequency band of GPS and the 2.4G frequency band of WIFI are generated on the first conductive branch113. Therefore, the first radiator of the first conductive branch113can simultaneously radiate the first radio frequency signal in the MHB frequency band of LTE, the L1 frequency band of GPS and the 2.4G frequency band of WIFI. The second current signal is fed into the second conductive branch115through the second feeding point S2, and by means of the second resonance circuit213, a resonance frequency resonated in the N78 frequency band and the N79 frequency band of 5G and the L5 frequency band of GPS can be excited on the second conductive branch115. In this way, the second radiator of the second conductive branch115can simultaneously radiate the second radio frequency signal in the N78 frequency band and the N79 frequency band of 5G and the L5 frequency band of GPS.

As illustrated inFIG.3, in an embodiment, the first conductive branch113also has a first grounding point G1. The first feeding point S1is set close to the slot111, and the first grounding point G1is set away from the slot111. The first conductive branch113between the slot111and the first grounding point G1constitutes the first radiator.

Both the first signal source221and the first resonance circuit211may be disposed on the substrate130. The first resonance circuit211can be coupled to the first conductive branch113through a first current feeding portion251. The first current feeding portion251may be a conductive elastic sheet or a screw. A coupling point between the conductive elastic sheet or the screw and the first conductive branch113may be used as the first feeding point S1. The first feeding point S1may be connected to the first resonance circuit211through the first current feeding portion251. The first current signal output from the first signal source221can be fed to the first conductive branch113through the first feeding point S1by the first resonance circuit211in a current feeding manner of the elastic sheet or the screw to excite a plurality of resonance frequencies on the first radiator.

In an embodiment, the first grounding point G1may be connected to a ground layer of the substrate130through the first connection portion252to achieve conduction with the ground. The first connection portion252may be a conductor such as an elastic sheet, a screw, or a flexible circuit board. The first connection portion252may also be a connection arm made of the same material as the first conductive branch113. Exemplarily, the first connection portion252and the first conductive branch113may be integrally formed to simplify the structure of the antenna assembly.

In an embodiment, the first resonance circuit211includes a low-pass filter circuit. The first conductive branch113is configured to generate two resonance frequencies under a resonance of the first resonance circuit211.

The low-pass filter circuit may be interpreted as that the first current signal is in the ON state when passing through the first resonance circuit211and a non-first current signal whose frequency is higher than the corresponding frequency of the first current signal is blocked from passing through the first resonance circuit211.

In an embodiment, the low-pass filter circuit includes a first capacitor C1and a first inductor L1. The first inductor L1has a first terminal connected to a first terminal of the first capacitor C1and the first feeding point S1, and a second terminal connected to the first signal source221. The first capacitor C1has a first terminal that is grounded.

It should be noted that, the low-pass filter circuit may be composed of other devices, and is not limited to the examples described in the embodiments of the present disclosure.

As illustrated inFIG.4andFIG.5, by providing the first resonance circuit211in the antenna assembly, dual resonance frequencies can be generated on the first conductive branch113. One of the dual resonance frequencies is the L1 frequency band of GPS, and the other one of the dual resonance frequencies is the 2.4G frequency band of WIFI. The MB frequency band and HB frequency band of LTE can be supported by the 2.4G frequency band of WIFI as the resonance frequency. When the first radio frequency signal is radiated from the first radiator of the first conductive branch113, both the radiation efficiency and total efficiency of the first radio frequency signal, in each operating frequency band, radiated from the first conductive branch113meet the communication requirements.

As illustrated inFIG.6, in an embodiment, the first resonance circuit211may include a band-stop and band-pass circuit. Under a resonance tuning of the first resonance circuit211, three resonance frequencies can be generated on the first conductive branch113.

In an embodiment, the band-stop and band-pass circuit includes a second capacitor C2, a third capacitor C3, a second inductor L2, and a third inductor L3. Both a first terminal of the second inductor L2and a first terminal of the second capacitor C2are grounded. A second terminal of the second inductor L2is connected to the first feeding point S1, a second terminal of the second capacitor C2, a first terminal of the third capacitor C3, and a first terminal of the third inductor L3correspondingly. A second terminal of the third capacitor C3and a second terminal of the third inductor L3are connected to the first signal source221.

The band-stop and band-pass circuit may be interpreted as the first current signal is in an ON state when passing through the first resonance circuit211, and a non-first current signal whose frequency is higher or lower than the corresponding frequency of the first current signal is blocked from passing through the first resonance circuit211.

It should be noted that, the band-stop and band-pass circuit may be constituted by other devices, which is not limited to the examples described in the embodiments of the present disclosure.

The first resonance circuit211is provided in the antenna assembly, and thus three resonance frequencies can be generated on the first conductive branch113. A first one of the three resonance frequencies is the L1 frequency band of GPS, a second one of the three resonance frequencies is the mid-high frequency signal frequency band of LTE, and a third one of the three resonance frequencies is the 2.4G frequency band of WIFI. When the first radio frequency signal is radiated from the first radiator of the first conductive branch113, both the radiation efficiency and system efficiency of each operating frequency band of each first radio frequency signal meet the communication requirements.

In an embodiment, the second current signal is fed from the second signal source to the second conductive branch through the second feeding point, and three resonance frequencies are generated on the second conductive branch115under the resonance of the second resonance circuit, enabling the second radiator of the second conductive branch115to radiate the second radio frequency signal including GPS L5, 5G signals (N78, N79).

As illustrated inFIG.7andFIG.8, in an embodiment, the second resonance circuit213is a band-pass filter circuit. Specifically, the second resonance circuit213includes a fourth capacitor C4and a fourth inductor L4. The second conductive branch115is grounded through the fourth capacitor C4and the fourth inductor L4.

It should be noted that, the band-pass filter circuit may also be constituted by other devices, and is not limited to the examples described in the embodiments of the present disclosure.

As illustrated inFIG.6, in an embodiment, the second conductive branch115also is provided with a second grounding point G2. The second feeding point S2is set close to the second grounding point G2, and the second grounding point G2is set away from the slot111. The second conductive branch115between the slot111and the second grounding point G2constitutes the second radiator.

As illustrated inFIG.4andFIG.5, the second current signal is fed to the second conductive branch115through the second feeding point S2, and under the action of the second resonance circuit213, the resonance frequency resonated in L5 frequency band of GPS, the N78 frequency band and the N79 frequency band of 5G can be excited on the second conductive branch115, enabling the second radiator of the second conductive branch115can simultaneously radiate the second radio frequency signal of the L5 frequency band of GPS as well as the frequency band and the N79 frequency band of 5G.

In the embodiment of the present disclosure, by providing the second resonance circuit214, it is possible to avoid a situation that a resonance at the same frequency is excited on the second conductive branch115when the first conductive branch113is operated at B41. In addition, by providing the second resonance circuit, it is possible to allow the B41 resonance excited by the first conductive branch113to return to ground at the second resonance circuit214, to avoid the B41 resonance from entering the second feeding point S2of the second conductive branch feed115. In this way, isolation degree between the first feeding point S1and the second feeding point S2is greatly improved, and thus the isolation degree between the first feeding point S1and the second feeding point S2may be about −15 dB.

As illustrated inFIGS.7and8, both the second signal source223and the second resonance circuit213may be disposed on the substrate130, and the second signal source223may be coupled to the second conductive branch115through a second current feeding portion253. A coupling point between the second feed portion253and the second conductive branch115may be regarded as the second feeding point S2. The second current feeding portion253may be a conductive elastic sheet or a screw, and may be connected to the second resonance circuit213through the conductive elastic sheet or the screw. The second current signal output from the second signal source223can be fed to the second conductive branch115through the second feeding point S2in a current feeding manner of the elastic sheet or a screw. In this way, a plurality of resonance frequencies can be excited on the second conductive branch115to generate radiation. That is, the second radiator of the second conductive branch115can radiate the second radio frequency signal having a plurality of operating frequency bands.

In an embodiment, the second resonance circuit213may be coupled to the second conductive branch115through the second connection portion254. The second connection portion254may be a conductor such as an elastic sheet, a screw, or a flexible circuit board. A connection point between the second connection portion254and the second conductive branch115is set close to the slot111.

In an embodiment, the second grounding point G2may be connected to the ground layer of the substrate130through a third connection portion255to achieve a conduction with the ground. The third connection portion255may be a conductor such as an elastic sheet, a screw, or a flexible circuit board. The third connection portion255may also be a connection arm made of the same material as the second conductive branch115. Exemplarily, the third connection portion255and the second conductive branch115may be integrally formed to simplify the structure of the antenna assembly.

It should be noted that the frequency within the range from 7% to 13% of the resonance frequency can be interpreted as the operating bandwidth of the antenna. For example, if the resonance frequency of the antenna is 1800 MHz, and the operating bandwidth is 10% of the resonance frequency, the operating frequency band of the antenna is from 1620 MHz to 1980 MHz.

As illustrated inFIG.9, in an embodiment, a first matching circuit241for adjusting the first current signal is also provided between the first conductive branch113and the first signal source221. The first matching circuit241may be configured to adjust an input impedance of the first radiator to improve transmission performance of the first radiator.

A second matching circuit243for adjusting the radio frequency signal of the second current signal is also provided between the second conductive branch115and the second signal source223. The second matching circuit243may be configured to adjust an input impedance of the second radiator to improve transmission performance of the second radiator.

Specifically, the first matching circuit241and the second matching circuit243each may include a capacitor and/or an inductor, or a combination thereof. In the embodiment of the present disclosure, the specific composition forms of the first matching circuit241and the second matching circuit243are not further limited.

In the embodiment of the present disclosure, a position of the second feeding point S2on the second conductive branch115and a length of the second conductive branch115can be reasonably set, and under the action of the second resonance circuit213, the three resonance frequencies described above can be generated on the second conductive branch115.

It should be noted that the first feeding point S1may be set at a middle position of the first conductive branch113, and the second feeding point S2may be set close to the second grounding point G2. It should be understood that the specific position of the first feeding point S1is associated with the first matching circuit241. That is, the specific position of the first feeding point S1may be set according to the first matching circuit241. Correspondingly, the specific position of the second feeding point S2is associated with the second matching circuit243. That is, the specific position of the second feeding point S2may be set according to the second matching circuit243.

In an embodiment, the slot111is defined on the conductive frame110to divide the conductive frame110into the first conductive branch113and the second conductive branch115. The first current signal fed to the middle position of the first conductive branch113can be tuned by the first resonance circuit to excite a plurality of resonance frequencies resonated in the MHB frequency band of LTE, the L1 frequency band of GPS and the 2.4G frequency band of WIFI on the first conductive branch113. The second current signal fed to a position of the second conductive branch115close to the second grounding point G2can be tuned by the second resonance circuit213to excite a plurality of resonance frequencies resonated in the L5 frequency band of GPS, the N78 frequency band and the N79 frequency band of 5G on the second conductive branch115. In this way, the dual-frequency coverage of the satellite positioning signal can be achieved, which greatly improves the positioning accuracy, and the common aperture antenna of the double conductive branches design can be achieved, which allows GPS L1, GPS L5, MHB, N78, N79, WIFI signals to share one slot, and improves the space utilization of the slot and the whole machine.

In an embodiment, a plurality of slots111is defined on the conductive frame110. Exemplarily, two slots are taken as an example for description. The two slots include a first slot and a second slot. The conductive frame110can be divided into a first conductive branch113, a second conductive branch115and a third conductive branch that are independent from each other by the first slot and the second slot. A feeding point and a grounding point may be correspondingly set on each of the conductive branches. A first radiator for radiating a first radio frequency signal may be integrated on the first conductive branch113, a second radiator for radiating a second radio frequency signal may be integrated on the second conductive branch115, and a third radiator for radiating a third radio frequency signal may be integrated on the third conductive branch. The third radio frequency signal may be a 2G signal, a 3G signal, a Bluetooth signal, or the like.

Further, each feeding point may be connected to the filter circuit through a conductive elastic sheet or a screw, and connected to a corresponding signal source through its resonance circuit. Each signal source is capable of feeding a current signal to the corresponding conductive branch through the resonance circuit, the conductive elastic sheet or the screw, and the feeding point to allow a quarter or other modes of current to be excited on the conductive branch (radiator) between the slot and the grounding point, resulting in radiations. That is, different radio frequency signals can be radiated.

Similarly, when the conductive frame110has N (N>2) slots111defined in the conductive frame110, the conductive frame110may be divided into N+1 conductive branches that are independent from each other by the N slots11. Meanwhile, N+1 filter circuits, and N+1 signal sources may be provided correspondingly. N+1 radiators may also be integrated on N+1 conductive branches that are independent from each other, to radiate N+1 radio frequency signals. An operating frequency bands of the radio frequency signals are different from each other.

According to embodiments of the present disclosure, there is provided an electronic device10including a substrate130and the antenna assembly as described in any of the above embodiments. The substrate130is accommodated in a cavity enclosed by the conductive frame110. The resonance unit210and the signal source unit220are disposed on the substrate130.

When the antenna assembly is applied in the electronic device10, the same slot111is shared by the first conductive branch113and the second conductive branch115to simultaneously achieve radiation of the first radio frequency signal and the second radio frequency signal, which can improve space utilization of the slot111and the conductive frame110in the electronic device10. Meanwhile, it is not necessary to design a single antenna radiator, which can reduce a thickness of a mobile phone.

Exemplarily, due to the common aperture antenna design, one slot is shared by GPS L1, GPS L5, MHB, N78, N79 and WIFI2.4G, and the first radiator and the second radiator can thus be integrated on the first frame110aor the third frame110cof the electronic device10, which can improve utilization rate of the top frame or the bottom frame. Thus, it is possible to further reduce the challenge of integrating the antenna assembly on the side frame and reduce the cross-sectional height of the side frame. The cross-sectional height of the side frame can be reduced to be smaller than 1 mm. The cross-sectional height of the side frame can be interpreted as the metal width of the conductive frame110in the thickness direction of the electronic device10. The cross-sectional height of the conductive frame110is one of the main factors affecting its radiation efficiency. Under the background that the side curvature of the curved screen is getting larger and larger, the cross-sectional height of the side frame is limited, and thus the antenna clearance is greatly reduced. By employing the common aperture antenna design provided in the embodiment of the present invention, the antenna assembly can be integrated on the top frame or the bottom frame to ensure that the antenna has enough clearance. Further, the first resonance circuit and the second resonance circuit are disposed in the antenna assembly, and thus the first radio frequency at least including the first satellite positioning signal can be radiated by the first conductive branch, and the second radio frequency signal at least including the second satellite positioning signal can be radiated by the second conductive branch, which can improve the positioning accuracy. Meanwhile, under the limited length of the radiator on the top or bottom frame, the design need of multi-band and multi-antenna can be satisfied.

Any reference to a memory, a storage, a database, or other medium as used herein may include a non-volatile and/or a volatile memory. Suitable nonvolatile memory may include a read only memory (ROM), a programmable ROM (PROM), an electrically programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may include a random access memory (RAM), which serves as an external cache memory. By way of illustration and non-limitation, the RAM is available in various forms such as a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a Synchlink DRAM (SLDRAM), a Rambus Direct RAM (RDRAM), a Direct Rambus Dynamic RAM (DRDRAM), and a Rambus Dynamic RAM (RDRAM).

The technical features of the above embodiments can be combined in any suitable manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in a combination of these technical features, the combination shall fall within the scope described in this specification.

The above embodiments only represent several embodiments of the present disclosure, and the descriptions thereof are relatively specific and detailed, and should not be construed as a limitation on the scope of the present disclosure. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which all fall within the scope of the present disclosure. Therefore, the scope of the present disclosure shall be defined by the appended claims.