CN220492217U - Antenna system and electronic device - Google Patents

Abstract

The disclosure relates to the technical field of electronic equipment, and particularly provides an antenna system and electronic equipment, wherein the antenna system comprises a radiation branch, a feed terminal, a grounding terminal and a tuning circuit, the tuning circuit comprises a low-frequency tuning branch and an intermediate-frequency tuning branch, the tuning circuit is configured to be switched between the low-frequency tuning branch and the intermediate-frequency tuning branch, so that the working frequency band of the antenna system comprises a low-frequency band and an intermediate-frequency band, and the intermediate-frequency tuning branch comprises a first capacitor and a first inductor which are connected in series. According to the antenna system of the embodiment of the disclosure, a multi-band antenna with the integration of the intermediate frequency band and the low frequency band can be realized, so that the integration of the intermediate frequency B32 band and the low frequency band can be realized, space and layout pressure are released for other frequency band designs of electronic equipment, and the antenna performance of the intermediate frequency band and the low frequency band is effectively improved and the antenna efficiency is improved through improvement of an intermediate frequency tuning branch.

Description

Antenna system and electronic device

Technical Field

The disclosure relates to the technical field of electronic equipment, in particular to an antenna system and electronic equipment.

Background

Nowadays, electronic devices are developed towards light weight and thin weight, but the integrated communication frequency bands of the electronic devices are more and more, so that the stacking difficulty of the internal space of the devices is higher and higher, and great difficulty is brought to the antenna design in the limited space.

Disclosure of Invention

In order to achieve multi-band fusion of antennas and improve antenna performance of the multi-band fusion antennas, the embodiment of the disclosure provides an antenna system and electronic equipment.

In a first aspect, embodiments of the present disclosure provide an antenna system, for use in an electronic device,

the antenna system comprises a radiation branch, a feed terminal, a grounding terminal and a tuning circuit;

the tuning circuit comprises a low frequency tuning branch and an intermediate frequency tuning branch, and the tuning circuit is configured to switch between the low frequency tuning branch and the intermediate frequency tuning branch so that the working frequency band of the antenna system comprises a low frequency band and an intermediate frequency band;

the intermediate frequency tuning branch comprises a first capacitor and a first inductor which are connected in series.

In some embodiments, the intermediate frequency tuning branch comprises a first branch and a second branch in parallel, the first branch comprising the first capacitor and the first inductance in series, the second branch comprising a second inductance.

In some embodiments, the feed terminal includes a second capacitor having one pole connected to the radiating stub and the other pole connected to ground.

In some embodiments, the radiating branch is an L-shaped structure, and the feeding point at which the feeding terminal is connected to the radiating branch is near a bending position of the L-shaped structure.

In some embodiments, the ground point at which the ground terminal is connected to the radiating stub is provided at a first portion of the L-shaped structure, and the tuning point at which the tuning circuit is connected to the radiating stub is provided at a second portion of the L-shaped structure.

In some embodiments, the intermediate frequency band of the antenna system comprises a B32 band.

In some embodiments, the circuit board is further provided with a radio frequency circuit, the radio frequency circuit is connected with the feed terminal, and the ground terminal is connected with the reference ground of the circuit board.

In a second aspect, embodiments of the present disclosure provide an electronic device comprising an antenna system according to any embodiment of the first aspect.

In some embodiments, a portion of a side frame of the electronic device forms the radiating branch of the antenna system.

In some embodiments, the electronic device comprises a smart phone or tablet.

The antenna system of the disclosed embodiment comprises a radiation branch, a feed terminal, a grounding terminal and a tuning circuit, wherein the tuning circuit comprises a low-frequency tuning branch and an intermediate-frequency tuning branch, the tuning circuit is configured to be switched between the low-frequency tuning branch and the intermediate-frequency tuning branch, so that the working frequency band of the antenna system comprises a low-frequency band and an intermediate-frequency band, and the intermediate-frequency tuning branch comprises a first capacitor and a first inductor which are connected in series. According to the antenna system of the embodiment of the disclosure, a multi-band antenna with the integration of the intermediate frequency band and the low frequency band can be realized, so that the integration of the intermediate frequency B32 band and the low frequency band can be realized, space and layout pressure are released for other frequency band designs of electronic equipment, and the antenna performance of the intermediate frequency band and the low frequency band is effectively improved and the antenna efficiency is improved through improvement of an intermediate frequency tuning branch.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the prior art, the drawings that are required in the detailed description or the prior art will be briefly described, it will be apparent that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of an electronic device according to some embodiments of the present disclosure.

Fig. 2 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 3 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 4 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 5 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 6 is a performance diagram of an antenna system in accordance with some embodiments of the present disclosure.

Fig. 7 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 8 is a performance diagram of an antenna system in accordance with some embodiments of the present disclosure.

Fig. 9 is a performance diagram of an antenna system in accordance with some embodiments of the present disclosure.

Fig. 10 is a schematic diagram of an antenna system according to some embodiments of the present disclosure.

Fig. 11 is a block diagram of an electronic device in accordance with some embodiments of the present disclosure.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure. In addition, technical features related to different embodiments of the present disclosure described below may be combined with each other as long as they do not make a conflict with each other.

Nowadays, with the development of wireless communication technologies, wireless communication antennas included in electronic devices are increasing, such as GPS (Global Positioning System ) antennas for realizing satellite positioning, wiFi (wireless fidelity ) antennas for realizing wireless local area networks, 4G LTE (Long Term Evolution ) antennas and 5G antennas for realizing cellular networks, BT (bluetooth) antennas for realizing bluetooth connections, and the like. In addition, some electronic devices include UWB (Ultra Wide Band) antennas, NFC (Near Field Communication ) antennas, and the like.

As can be seen, the number of antennas included in the electronic device is large, but the electronic device is gradually developed towards integration and lightening, so that the internal space is very compact, and challenges are brought to antenna design.

Taking a smart phone as an example, in order to realize full-band communication with a base station, mobile phone antennas need to merge more and more frequency bands, such as LB low frequency, MB intermediate frequency and HB high frequency, so as to realize full-band coverage. However, the internal space of the mobile phone is limited, so that carrier aggregation (CA, (Carrier Aggregation) is often needed, that is, signals in different frequency bands are fused in the same antenna, and a tuning switch (tuner) is used for switching the frequency bands.

In the related art, most of electronic devices in the domestic market do not support the B32 frequency band, B32 is an intermediate frequency band commonly used internationally, and if manufacturers of electronic devices want to enter the international market, the design of the B32 frequency band is a problem that has to be considered.

Based on the defects existing in the related art, the embodiment of the disclosure provides an antenna system and an electronic device with the antenna system, which aim to realize a multi-band fusion antenna supporting an intermediate frequency band and a low frequency band simultaneously, optimize the performance of the antenna and ensure that the intermediate frequency band and the low frequency band have better antenna performance.

In some embodiments, the present disclosure provides an antenna system that is applicable in electronic devices. The electronic device described in the present disclosure may be any suitable type of device for implementation, such as a smart phone, tablet, PDA (Personal Digital Assistant ), wearable device, etc., to which the present disclosure is not limited.

In some embodiments, the electronic device of the present disclosure uses a smart phone as an example, where a laminated structure of the smart phone often includes a metal carrying frame, and the carrying frame is used as a main body supporting structure of the smart phone on one hand, and is used for assembling various structures such as a motherboard, a sensor, a display module, a back plate, and the like. On the other hand, the edge of the carrying frame is used for forming an outer frame of the mobile phone, and the antenna system of the mobile phone can generally utilize the outer frame as a metal radiator.

For example, fig. 1 illustrates the structure of a smart phone in some embodiments of the present disclosure, the phone including a frame 100, a screen assembly 200, and a back plate 300. The housing 100 serves as a main body support structure for the handset upon which the various electrical and structural elements of the handset may be disposed. For example, one side of the housing 100 is used to mount the screen assembly 200 to form the front of the phone and the other side of the housing 100 is used to mount the backplate 300 to form the back of the phone.

The frame body 100 includes a carrying portion 120 and a frame 110 formed around the edge of the carrying portion 120, and after the screen assembly 200 and the back plate 300 are packaged, the frame 110 can be used as an external side frame of the mobile phone. The frame body 100 is generally made of metal materials such as aluminum alloy and stainless steel, so that the frame 110 can be used as a metal radiator of a mobile phone antenna system, and signal radiation of various frequency bands of a mobile phone is realized by forming a break joint on the frame 110 and connecting a corresponding radio frequency circuit.

Of course, various other electrical structures may be included in the smart phone, which are not shown in fig. 1 of the present disclosure. For example, a circuit board, various sensors, a battery, etc. are generally disposed between the carrier 120 of the frame 100 and the back plate 300, which will be understood by those skilled in the art, and the disclosure will not be repeated.

On the basis of the electronic device structure, the embodiment of the disclosure provides an antenna system, which comprises a radiation branch, a feed terminal, a grounding terminal and a tuning circuit.

The radiation branch is a radiator of an antenna system, and based on the antenna principle, by feeding and grounding the radiation branch, a resonance signal can be generated on the radiation branch, and the radiation branch is used as an antenna receiving source to realize the receiving and transmitting of signals in a preset frequency band. For example, in the embodiments of the present disclosure, by connecting the feed terminal and the ground terminal to the radiating stub, the antenna system of the basic mode can be realized.

The tuning circuit is connected with the radiation branch, and is essentially a plurality of parallel branches formed by inductance, capacitance or a combination of the inductance and the capacitance, and the tuning circuit has the function of changing the effective electric length of the radiation branch by switching different branches, thereby realizing the adjustment of the frequency of the antenna.

In the disclosed embodiments, the antenna system is configured such that the operating frequency band includes a low frequency band and an intermediate frequency band, and thus the tuning circuit needs to include at least a low frequency tuning branch and an intermediate frequency tuning branch.

It will be appreciated that when the antenna system is operating in the low frequency band, it will also support multiple low frequency bands such as B5, B8, B20, B28, and thus the low frequency tuning branch may include multiple low frequency tuning branches, so that by switching between different low frequency tuning branches, the antenna system may also be switched between different low frequency bands, which will be understood by those skilled in the art, and will not be repeated in this disclosure.

In the embodiment of the disclosure, for an intermediate frequency tuning branch for implementing an intermediate frequency band, a circuit structure is adopted that is a first capacitor and a first inductor connected in series.

It should be noted that, when the intermediate frequency tuning branch is designed, only an inductor is considered to tune an intermediate frequency band such as B32, however, through research, it is found that this scheme can implement tuning of the B32 band, but when the antenna system is switched to a low frequency band, the intermediate frequency tuning branch and the tuning switch device form an LC circuit in series, and the parasitic capacitance of the tuning switch device can make the resonant frequency of the LC circuit be lower than that of the low frequency LB band, so that the LC circuit can be equivalent to an inductor when the antenna system works in the low frequency band, thereby affecting the low frequency LB band, making tuning of the LB band difficult, and thus failing to implement coexistence of the low frequency band and the intermediate frequency band.

Therefore, in the embodiment of the disclosure, the intermediate frequency tuning branch is implemented by using the first capacitor and the first inductor connected in series, and due to the existence of the first capacitor, when the antenna system is switched to the low frequency band, the resonance frequency of the equivalent circuit of the intermediate frequency tuning branch is higher than the low frequency LB frequency band, that is, the intermediate frequency tuning branch can be equivalent to the capacitor when the antenna system works in the low frequency band, so that the influence on the low frequency LB frequency band can be effectively reduced, and the performances of the low frequency (LB) and the intermediate frequency (MB) frequency bands in the antenna system are ensured.

According to the antenna system, the multi-band antenna with the integrated intermediate frequency band and the low frequency band can be realized, so that the integration of the intermediate frequency B32 band and the low frequency band can be realized, space and layout pressure are released for other frequency band designs of electronic equipment, and the antenna performance of the intermediate frequency band and the low frequency band is effectively improved and the antenna efficiency is improved through improvement of an intermediate frequency tuning branch.

Fig. 2 illustrates an antenna system structure in some embodiments of the present disclosure, and the antenna system of the present disclosure is described below in conjunction with fig. 2.

As shown in fig. 2, in some embodiments, the antenna system 400 of the disclosed example includes a radiation branch 410, and when the antenna system 400 is implemented in a smart phone as shown in fig. 1, the radiation branch 410 may be the frame 110 of the frame body 100, and a part of the frame 110 made of metal is used as the radiation branch 410 by breaking the frame 110.

In the disclosed embodiment, the radiating stub 410 is an L-shaped structure, i.e., the radiating stub 410 includes a first portion 411 and a second portion 412 that are integrally formed.

The radiating stub 410 connects the feed terminal K1, the ground terminal GND, and the tuning circuit tuner. Referring to fig. 2, the feed terminal K1 and the ground terminal GND are connected to a first portion 411 of the radiating stub 410. The position where the feeding terminal K1 is connected to the radiating stub 410 is referred to as a feeding point, and the position where the ground terminal GND is connected to the radiating stub 410 is referred to as a ground point, and in the embodiment of the present disclosure, the feeding point may be located near the bent portion of the radiating stub 410.

It can be understood that the feeding terminal K1 is connected to a radio frequency circuit of the electronic device, where the radio frequency circuit is a feed source of the antenna system, and the radio frequency circuit excites the feeding of the radiating branch 410 to implement that the radiating branch 410 receives and transmits signals of a corresponding frequency band. The ground terminal GND is connected to the reference ground of the electronic device, which refers to a zero potential reference plane of an electrical system in the electronic device, and in the electronic device, a larger area of metal is usually used as the reference ground, for example, a circuit board of the electronic device, and a PCB (Printed Circuit Board ) laminated structure of the circuit board often includes at least one metal copper layer as the GND layer, so that the circuit board can be used as the reference ground of the electronic device.

In the embodiment of the present disclosure, the tuning circuit tuner is connected to the second portion 412 of the radiation branch 410, and a connection position of the tuning circuit tuner to the radiation branch 410 is referred to as a tuning point, and the tuning point may be disposed near the free end b of the second portion 412.

The tuning circuit tuner is configured to switch between a low frequency band (LB) and an intermediate frequency band (MB), for example, the LB band includes B5, B8, B20, B28, and the MB band includes B32, and the tuning circuit tuner may switch each tuning branch through a tuning switch, so that the antenna system is switched between different bands.

Fig. 3 illustrates a block diagram of a tuning circuit tuner in some embodiments of the present disclosure, and referring to fig. 3, the tuning circuit includes a plurality of tuning branches including at least one low frequency tuning branch and at least one intermediate frequency tuning branch. For example, in one example, the intermediate frequency band of the antenna system of the present disclosure includes only the B32 band, so that only one tuning branch may be set as the intermediate frequency tuning branch.

The tuning branch comprises a tuning switch, which may be, for example, a SPnT switch, SPnT being a single pole n throw switch, which can be controllably switched between a plurality of tuning branches to effect switching of the frequency band of the antenna system.

As to the specific circuit structure of the low-frequency tuning branch, those skilled in the art will understand and fully realize with reference to the related art, and the embodiments of the present disclosure mainly describe the principle of the intermediate-frequency tuning branch of the antenna system.

In one example, in the antenna system of the embodiment of the present disclosure, an intermediate frequency tuning branch of the tuning circuit tuner may include a first capacitor C1 and a first inductance L1 connected in series as shown in fig. 4. By adjusting the capacitance value of the first capacitor C1, when the antenna system is switched to the low-frequency band, namely when the tuning switch is switched to the low-frequency tuning branch, the resonance frequency of an equivalent circuit of the intermediate-frequency tuning branch formed by the first inductor L1 and the first capacitor C1 is higher than the low-frequency LB band, namely the intermediate-frequency tuning branch can be equivalent to the capacitor when the antenna system works in the low-frequency band, the influence on the low-frequency LB band can be effectively reduced, and the performances of the low-frequency (LB) and the intermediate-frequency (MB) bands in the antenna system are ensured.

Experiments prove that the antenna system of the embodiment of the disclosure can ensure good LB frequency band radiation efficiency, and can meet performance requirements for intermediate frequency bands such as B32, and the like, so that the antenna system of the embodiment of the disclosure can meet design requirements of a multi-band fusion antenna.

It should be noted that, although the above antenna system can implement a fused antenna with a middle-low frequency band, in order to ensure good performance of the LB frequency band, the integrated frequency of the intermediate frequency tuning branch and the radiating branch 410 needs to be set near the intermediate frequency band, such as B32, which results in narrower bandwidth of the B32 frequency band, and the antenna performance can meet the requirement but cannot be further improved optimally.

Based on this, in some embodiments of the present disclosure, to further improve the bandwidth of the intermediate frequency band such as B32, and improve the intermediate frequency radiation efficiency, the circuit structure of the intermediate frequency tuning branch is further improved, and the improved intermediate frequency tuning branch may be as shown in fig. 5.

As shown in fig. 5, in this embodiment example, the intermediate frequency tuning branch includes a first branch and a second branch connected in parallel, the first branch includes a first inductance L1 and a first capacitance C1 connected in series, and the second branch includes a second inductance L2, that is, equivalently, one second inductance L2 is connected in parallel on the basis of the circuit structure shown in fig. 4.

In this embodiment example, the intermediate frequency B32 band in the initial resonance state can be tuned to the capacitance state by the parallel second inductor L2, so that the radiation efficiency of the B32 band is effectively improved by more than 1dB, and the intermediate frequency tuning branch is equivalent to the capacitance when the antenna system works in the low frequency band, so that no influence is caused to the LB band, and coexistence of the high-performance B32 band and the LB band is realized.

To illustrate the effects of the intermediate frequency tuning branch of the examples of the present disclosure, fig. 6 shows a performance graph of an antenna system of an embodiment of the present disclosure. In fig. 6, a curve a shows the antenna performance in the B32 band in the case of using the intermediate frequency tuning branch shown in fig. 4, and a curve B shows the antenna performance in the B32 band in the case of using the intermediate frequency tuning branch shown in fig. 5. As can be seen by comparison, the radiation efficiency of the B32 frequency band can be effectively improved by more than 1dB by using the embodiment of the figure 5, and the radiation efficiency of the B32 frequency band has better bandwidth.

As can be seen from the above, in the embodiment of the present disclosure, the second inductor is connected in parallel to the intermediate frequency tuning branch, so that the radiation performance and the frequency bandwidth of the intermediate frequency band are effectively improved, the intermediate frequency radiation efficiency is improved, and the performance of the antenna system is improved.

In some embodiments, to further improve the bandwidth of the B32 intermediate frequency band, for example, a shunt capacitor may be added to the feed terminal, as will be described below in connection with the embodiment of fig. 7.

As shown in fig. 7, in the example of the present disclosure, the feeding terminal further includes a second capacitor C2, one pole of the second capacitor C2 is connected to the radiation branch 410, and the other pole is grounded. Therefore, the second capacitor C2 can effectively adjust the B32 frequency band of the resonance mode to be close to a 50 ohm matching point through impedance transformation, and is closer to the matching point, so that the matching effect is better, and the bandwidth and performance of the B32 frequency band are optimized.

For example, fig. 8 shows a Smith chart of the antenna system of the present disclosure, where curve a represents the antenna performance of the B32 band of the antenna system shown in fig. 2 and curve B represents the antenna performance of the B32 band of the antenna system shown in fig. 7. As can be seen by comparing, in the antenna system shown in fig. 7, the B32 frequency band is closer to the center point of the circular graph, so that the matching performance is better, and the bandwidth and radiation efficiency of the B32 frequency band are better.

Fig. 9 shows an S-parameter graph of the antenna system of the present disclosure, wherein curve a represents an S-parameter curve of the B32 band of the antenna system shown in fig. 2, and curve B represents an S-parameter curve of the B32 band of the antenna system shown in fig. 7. As can be seen by comparison, the antenna efficiency of the B32 band in the antenna system shown in fig. 7 is far better than that of the antenna system of fig. 2.

As can be seen from the above, in the embodiment of the present disclosure, by adding the parallel capacitor in the feed terminal, the bandwidth and radiation performance of the intermediate frequency band are further improved, coexistence of the intermediate frequency band and the low frequency band is better achieved, and the antenna performance is improved.

In this embodiment of the disclosure, the radiating branch 410 of the antenna system may adopt a suspension structure, and the radiator of the suspension structure may weaken electromagnetic interference of other device structures, so as to further improve efficiency and radiation performance of the antenna system, which is described below with reference to fig. 10.

For convenience of description, fig. 10 shows only the structure of the housing 100 of the electronic device, and other structures are hidden. As shown in fig. 10, the frame body 100 includes a frame 110 and a bearing portion 120, where the frame 110 and the bearing portion 120 may be integrally formed with metal materials, or may be separately connected, which is not limited in this disclosure.

In the embodiment of the disclosure, the frame 110 of the frame body 100 may be split by a fracture, and a portion of the frame 110 is used as the radiating branch 410 of the antenna system, and as can be seen from fig. 10, the radiating branch 410 is completely independent of the frame body 100, and is not connected to the rest of the frame 110 or the bearing portion 120, so as to form a suspended structure. The radiation branches 410 may be injection molded with the frame 100 to form a fixed connection, for example, the radiation branches 410 may be injection molded with the nano-material to form a fixed connection with the frame 110.

As can be seen from the above, in the embodiments of the present disclosure, electromagnetic interference of other device structures can be reduced by the suspended radiator structure, efficiency and radiation performance of the antenna system can be further improved,

in some embodiments, the electronic device further includes a circuit board that may be either the motherboard or the SUB (Substrate) sub-board of the electronic device. The circuit board is provided with a radio frequency circuit, which may be, for example, a radio frequency IC (Integrated Circuit ) chip of the electronic device, and the radio frequency circuit is connected to the first feed of the antenna system and is used as an excitation source of the antenna system.

According to the antenna system, the multi-band antenna with the integrated intermediate frequency band and the low frequency band can be realized, so that the integration of the intermediate frequency B32 band and the low frequency band can be realized, space and layout pressure are released for other frequency band designs of electronic equipment, and the antenna performance of the intermediate frequency band and the low frequency band is effectively improved and the antenna efficiency is improved through improvement of an intermediate frequency tuning branch. By connecting the second inductor in parallel in the intermediate frequency tuning branch, the radiation performance and the frequency bandwidth of the intermediate frequency band are effectively improved, the intermediate frequency radiation efficiency is improved, and the antenna system performance is improved. By adding the parallel capacitor in the feed terminal, the bandwidth and radiation performance of the intermediate frequency band are further improved, coexistence of the intermediate frequency band and the low frequency band is better realized, and the antenna performance is improved.

A block diagram of the electronic device in some embodiments of the present disclosure is shown in fig. 11, and the principles related to the electronic device in some embodiments of the present disclosure are explained below with reference to fig. 11.

Referring to fig. 11, the electronic device 1800 may include one or more of the following components: a processing component 1802, a memory 1804, a power component 1806, a multimedia component 1808, an audio component 1810, an input/output (I/O) interface 1812, a sensor component 1816, and a communication component 1818.

The processing component 1802 generally controls overall operation of the electronic device 1800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. Further, the processing component 1802 may include one or more modules that facilitate interactions between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. As another example, the processing component 1802 may read executable instructions from a memory to implement electronic device-related functions.

The memory 1804 is configured to store various types of data to support operations at the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply assembly 1806 provides power to the various components of the electronic device 1800. The power components 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1800.

The multimedia component 1808 includes a display screen between the electronic device 1800 and the user that provides an output interface. In some embodiments, the multimedia component 1808 includes a front-facing camera and/or a rear-facing camera. When the electronic device 1800 is in an operational mode, such as a shooting mode or a video mode, the front-facing camera and/or the rear-facing camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1810 is configured to output and/or input audio signals. For example, the audio component 1810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 1800 is in operating modes, such as a call mode, a recording mode, and a speech recognition mode. The received audio signals may be further stored in the memory 1804 or transmitted via the communication component 1818. In some embodiments, audio component 1810 also includes a speaker for outputting audio signals.

The I/O interface 1812 provides an interface between the processing component 1802 and a peripheral interface module, which may be a keyboard, click wheel, button, or the like. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 1816 includes one or more sensors for providing status assessment of various aspects of the electronic device 1800. For example, the sensor assembly 1816 may detect an on/off state of the electronic device 1800, a relative positioning of the assemblies, the sensor assembly 1816 may also detect a change in position of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of a user contact with the electronic device 1800, an orientation or acceleration/deceleration of the electronic device 1800, and a change in temperature of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1816 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1818 is configured to facilitate communication between the electronic device 1800 and other devices, either wired or wireless. The electronic device 1800 may access a wireless network based on a communication standard, such as Wi-Fi,2G,3G,4G,5G, or 6G, or a combination thereof. In one exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 1818 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 1800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements.

It should be apparent that the above embodiments are merely examples for clarity of illustration and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the present disclosure.

Claims (10)

1. An antenna system, characterized in that it is applied to an electronic device,

the antenna system comprises a radiation branch, a feed terminal, a grounding terminal and a tuning circuit;

the tuning circuit comprises a low frequency tuning branch and an intermediate frequency tuning branch, and the tuning circuit is configured to switch between the low frequency tuning branch and the intermediate frequency tuning branch so that the working frequency band of the antenna system comprises a low frequency band and an intermediate frequency band; the intermediate frequency tuning branch comprises a first capacitor and a first inductor which are connected in series.

2. The antenna system of claim 1, wherein the antenna system comprises a plurality of antenna elements,

the intermediate frequency tuning branch comprises a first branch and a second branch which are connected in parallel, wherein the first branch comprises the first capacitor and the first inductor which are connected in series, and the second branch comprises the second inductor.

3. The antenna system of claim 1, wherein the antenna system comprises a plurality of antenna elements,

the feed terminal comprises a second capacitor, one pole of the second capacitor is connected with the radiation branch, and the other pole of the second capacitor is grounded.

4. An antenna system according to any one of claims 1 to 3, characterized in that,

the radiation branch is of an L-shaped structure, and a feed point, at which the feed terminal is connected with the radiation branch, is close to the bending position of the L-shaped structure.

5. The antenna system of claim 4, wherein the antenna system comprises a plurality of antenna elements,

the grounding point of the grounding terminal connected with the radiation branch is arranged on the first part of the L-shaped structure, and the tuning point of the tuning circuit connected with the radiation branch is arranged on the second part of the L-shaped structure.

6. The antenna system of claim 1, wherein the antenna system comprises a plurality of antenna elements,

the intermediate frequency band of the antenna system includes a B32 band.

7. The antenna system of claim 1, wherein the antenna system comprises a plurality of antenna elements,

the circuit board is provided with a radio frequency circuit, the radio frequency circuit is connected with the feed terminal, and the grounding terminal is connected with the reference ground of the circuit board.

8. An electronic device, characterized in that it comprises an antenna system according to any of claims 1 to 7.

9. The electronic device of claim 8, wherein the electronic device comprises a memory device,

a portion of a side frame of the electronic device forms the radiating stub of the antenna system.

10. The electronic device of claim 8, wherein the electronic device comprises a memory device,

the electronic device comprises a smart phone or a tablet computer.