CN117977160A - Antenna assembly and electronic equipment - Google Patents

Abstract

The application relates to an antenna assembly and an electronic device, wherein the antenna assembly comprises: the antenna radiator comprises a first free end and a second free end, wherein a feed point and a grounding point are arranged between the first free end and the second free end; a feed source for providing an excitation signal; the first end of the first matching circuit is connected with the feed source, and the second end of the first matching circuit is connected with the feed point; the first end of the second matching circuit is connected with the grounding point, and the second end of the second matching circuit is grounded; the antenna component has at least three resonance modes to support a low frequency band, a high frequency band and an ultrahigh frequency band, so that carrier aggregation of a plurality of frequency bands can be realized, the occupied space of the antenna component can be reduced, and the miniaturization design of the antenna component is facilitated.

Description

Antenna assembly and electronic equipment

Technical Field

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

Background

With the development of technology, electronic devices with communication functions (e.g., mobile phones, tablets, etc.) have become more popular and more powerful. An antenna assembly is typically included in an electronic device to enable communication functions of the electronic device.

The antenna assembly in the electronic device in the related art can implement carrier aggregation of multiple frequency bands, but occupies a large space.

Disclosure of Invention

The embodiment of the application provides an antenna assembly and electronic equipment, which can realize carrier aggregation of a plurality of frequency bands, reduce the occupied space of the antenna assembly and are beneficial to the miniaturization design of the antenna assembly.

In a first aspect, an embodiment of the present application provides an antenna assembly, including:

The antenna radiator comprises a first free end and a second free end, wherein a feed point and a grounding point are arranged between the first free end and the second free end;

a first end of the first matching circuit is connected with the feed point;

the feed source is connected with the second end of the first matching circuit and is used for providing an excitation signal;

The first end of the second matching circuit is connected with the grounding point, and the second end of the second matching circuit is grounded;

The antenna assembly has at least three resonant modes to support a low frequency band, a high frequency band, and an ultra-high frequency band.

In a second aspect, an embodiment of the present application provides an electronic device, including: the antenna assembly.

The electronic device comprises the antenna radiator, the feed source, the first matching circuit and the second matching circuit, wherein the first matching circuit is respectively connected to the feed source and the feed point of the antenna radiator, the second matching circuit is respectively connected to the ground end and the ground point of the antenna radiator, and the antenna radiator can be excited to play at least three resonance modes under the action of excitation signals provided by the feed source through mutual matching of the first matching circuit and the second matching circuit so as to support the receiving and transmitting of electromagnetic wave signals of a low frequency band, a high frequency band and an ultrahigh frequency band, for example, carrier aggregation (Carrier Aggregation, CA) of the low frequency band, the high frequency band and the ultrahigh frequency band is realized, so that the antenna radiator can support a wider frequency band, and the communication performance of an antenna assembly can be improved. In addition, the antenna component provided by the embodiment of the application supports at least three resonant modes by adopting a mode of sharing a feeding point and a common antenna radiator, so as to realize the receiving and transmitting of electromagnetic wave signals in a low-frequency band, a high-frequency band and an ultrahigh-frequency band, reduce the occupied space of the antenna component and facilitate the miniaturization setting of the antenna component.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an antenna assembly according to one embodiment;

FIG. 2 is a schematic diagram of an antenna assembly according to another embodiment;

Fig. 3 is a graph of return loss for a first resonant mode, a second resonant mode, and a third resonant mode of the antenna assembly shown in fig. 1;

fig. 4 is a graph of return loss for a first resonant mode, a second resonant mode, and a third resonant mode of the antenna assembly shown in fig. 2;

FIGS. 5-12 are schematic circuit diagrams of a first matching circuit or a second matching circuit in various embodiments;

fig. 13a is a schematic diagram of main current flow in a first resonant mode of the antenna assembly shown in fig. 1;

fig. 13b is a schematic diagram of main current flow in a first resonant mode of the antenna assembly shown in fig. 2;

fig. 14a is a schematic diagram of main current flow in a second resonant mode of the antenna assembly shown in fig. 1;

Fig. 14b is a schematic diagram of main current flow in a second resonant mode of the antenna assembly shown in fig. 2;

fig. 15a is a schematic diagram of main current flow in a third resonant mode of the antenna assembly shown in fig. 1;

fig. 15b is a schematic diagram of main current flow in a third resonant mode of the antenna assembly shown in fig. 2;

fig. 16 is a graph of return loss for a first resonant mode, a second resonant mode, a third resonant mode, and a fourth resonant mode of the antenna assembly shown in fig. 1;

Fig. 17 is a graph of return loss for the first, second, third, and fourth resonant modes of the antenna assembly shown in fig. 2;

Fig. 18a is a schematic diagram of a main current flow of a fourth resonant mode of the antenna assembly shown in fig. 1;

Fig. 18b is a schematic diagram of a main current flow of a fourth resonant mode of the antenna assembly shown in fig. 2;

fig. 19 is an efficiency graph of the antenna assembly shown in fig. 1;

FIG. 20 is a graph of efficiency of the antenna assembly shown in FIG. 2;

FIG. 21 is a schematic diagram of an antenna assembly according to another embodiment;

FIG. 22 is a schematic diagram of an electronic device in one embodiment;

FIG. 23 is a schematic diagram of an antenna assembly in an electronic device according to one embodiment;

FIG. 24 is a block diagram of the internal structure of an electronic device in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The antenna assembly according to the embodiment of the present application may be applied to an electronic device having a wireless communication function, where the electronic device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

As shown in fig. 1, an embodiment of the present application provides an antenna assembly. The antenna assembly includes: the antenna comprises a feed source S, an antenna radiator 110, a first matching circuit M1 and a second matching circuit M2.

And the feed source S is used for providing an excitation signal. The feed source S is understood to be a port connected with the radio frequency device, so that a feed source S signal provided by the radio frequency device is transmitted to the antenna assembly. In an embodiment of the present application, the excitation signal may include a plurality of sub-excitation signals, where each sub-excitation signal may be used to excite an unused resonant mode, so that the antenna radiator 110 supports radiation in different frequency bands. Radiation is understood to mean the emission of electromagnetic wave signals, the reception of electromagnetic wave signals, and the reception and emission of electromagnetic wave signals.

The antenna radiator 110 includes a first free end F1 and a second free end F2, wherein a feeding point a and a ground point B are disposed between the first free end F1 and the second free end F2. The feed S may be connected to the antenna radiator 110 through a feed structure to transmit an excitation signal provided by the feed S to the antenna radiator 110. The connection between the antenna radiator 110 and the feed structure is the feed point a of the antenna radiator 110. When the antenna assembly is applied in an electronic device, its feed S may be provided on the motherboard of the electronic device. The antenna radiator 110 may also be connected to a ground layer of the motherboard through a ground structure, such as a ground line. The connection between the antenna radiator 110 and the grounding structure is a grounding point B of the antenna radiator 110.

In the embodiment of the present application, the feeding point a may be disposed closer to the first free end F1 than the grounding point B. Alternatively, as shown in fig. 2, the ground point B may be disposed closer to the first free end F1 than the feeding point a.

The antenna radiator 110 may be one of a flexible circuit board (Flexible Printed Circuit) antenna radiator, a Laser Direct Structuring (LDS) antenna radiator, a printed direct Structuring (PRINTDIRECT STRUCTURING, PDS) antenna radiator, and a metal radiating branch. In the embodiment of the present application, the radiator type of the antenna radiator 110 is not further limited. In the embodiment of the present application, for convenience of description, the antenna radiator 110 is taken as a metal radiating branch, for example, a conductive frame of an electronic device is taken as an example.

The antenna radiator 110 may be an active antenna radiator. In general, the impedance of the antenna radiator 110 is a complex number, and the impedance of the antenna radiator 110 may be related to at least one factor of the geometry, size, feeding point position, operating wavelength, and surrounding environment of the antenna radiator. The power transmitted by the transmitter to the antenna radiator 110 or by the antenna radiator 110 to the receiver is maximized when the impedance of the antenna radiator 110 matches the input impedance of the feed S.

The first end of the first matching circuit M1 is connected to the feed point a of the antenna radiator 110, and the second end of the first matching circuit M1 is connected to the feed source S. The first end of the second matching circuit M2 is connected to the ground point B of the antenna radiator 110, and the second end of the second matching circuit M2 is grounded. In the embodiment of the present application, the first matching circuit M1 may be used for tuning a high frequency band and an ultra-high frequency band, and the second matching circuit M2 may be used for tuning a low frequency band.

In the embodiment of the present application, by setting the first matching circuit M1 and the second matching circuit M2, the antenna radiator 110 can be excited to have at least three resonant modes under the action of the excitation signal, so as to support the low frequency band, the high frequency band and the ultrahigh frequency band at the same time, for example, to realize carrier aggregation (Carrier Aggregation, CA) of the low frequency, the medium frequency, the high frequency and the ultrahigh frequency, so that it can support a wider frequency band, and the communication performance of the antenna assembly can be improved. Wherein, the frequency range f1 of the low frequency band satisfies: f1 < 1000MHz. The low frequency band may include a low frequency band of a 4G signal, a low frequency band of a 5G signal, a low frequency band of a global positioning system (Global Positioning System, GPS), and the like. The low frequency band of the 4G signal includes, but is not limited to, B5 band, B8 band, B28 band, etc. The low frequency band of the 5G signal includes, but is not limited to, the N28 band, etc. The low frequency band of the GPS signal includes, but is not limited to, the GPS L5 band, the GPS L1 band. The frequency f2 range of the high frequency band satisfies: 2200MHz is less than or equal to f2 and less than 3000MHz. The high frequency band may include the high frequency band of a 4G signal, the high frequency band of a 5G signal, and the high frequency band of a WI-Fi signal, e.g., WI-FI 2.4GHz, etc. The frequency f3 range of the super-frequency band satisfies the following conditions: f3 is less than or equal to 3000MHz and less than 10000MHz. The high frequency bands may include ultra-high frequency bands of 5G signals, such as N77, N78, and N79 bands, and may also include ultra-high frequency bands of wireless fidelity WI-FI signals, such as WI-FI 5GHz, and the like.

The antenna assembly provided in the embodiment of the application can support at least three resonant modes by adopting the mode of the common feed point A and the common antenna radiator 110 so as to simultaneously support the receiving and transmitting of electromagnetic wave signals in a low frequency band, a high frequency band and an ultrahigh frequency band, for example, realize carrier aggregation (CarrierAggregation, CA) of the low frequency band, the medium frequency band, the high frequency band and the ultrahigh frequency band, so that the antenna assembly can support a wider frequency band, improve the communication performance of the antenna assembly, reduce the occupied space of the antenna assembly and be beneficial to the miniaturization design of the antenna assembly.

In one embodiment, the at least three resonant modes include a first resonant mode supporting a low frequency band, a second resonant mode supporting a high frequency band, and a third resonant mode supporting an ultra-high frequency band. As shown in fig. 3 and 4, fig. 3 is a graph of return loss for a first resonant mode, a second resonant mode, and a third resonant mode of the antenna assembly shown in fig. 1. Fig. 4 is a graph of return loss for a first resonant mode, a second resonant mode, and a third resonant mode of the antenna assembly shown in fig. 3. In fig. 3 and 4, the horizontal axis represents frequency in MHz, the vertical axis represents RL, and the unit is dB. The frequency band supported by the first resonance mode is a low frequency band as seen by the return loss curves of the first resonance mode (denoted as mode one in the figure), the second resonance mode (denoted as mode two in the figure) and the third resonance mode (denoted as mode three in the figure), and correspondingly, the frequency band supported by the second resonance mode is a high frequency band as seen by the return loss curve of the second resonance mode, and the frequency band supported by the third resonance mode is an ultrahigh frequency band as seen by the return loss curve of the third resonance mode.

The first matching circuit M1 may be used to tune the high frequency and ultra-high frequency bands. The antenna radiator 110 may be used to support radiation of electromagnetic wave signals in a high frequency band when operating in the second resonant mode. The antenna radiator 110 may be used to support radiation of electromagnetic wave signals in an ultra-high frequency band when operating in the third resonant mode. The first matching circuit M1 may include matching devices such as a capacitor and an inductor. Optionally, the first matching circuit M1 may further include matching devices such as a switch, a capacitor, and an inductor. In the embodiment of the application, the full coverage of the high-frequency band or the ultrahigh frequency band can be realized by changing at least one of the matching parameters of the matching devices and the connection relation between the matching devices included in the first matching circuit M1.

The second matching circuit M2 may be used to tune the low frequency band. The degree of matching between the impedance of the second matching circuit M2 and the impedance of the antenna radiator 110 supporting the high frequency band and/or the ultra-high frequency band has little or no influence. The antenna radiator 110 is operable to support radiation in the low frequency band when operating in the first resonant mode. The second matching circuit M2 may include at least matching devices such as an inductor. Optionally, the second matching circuit M2 may include only an inductor, and may further include a capacitor and/or a switch. In the embodiment of the application, the full coverage of the low-frequency band can be realized by changing at least one of the matching parameters of the matching devices and the connection relation between the matching devices included in the first matching circuit M1.

In the embodiment of the present application, the second matching circuit M2 includes at least an inductor, and the second matching circuit M2 is grounded, so that the inductor is equivalent to an effective antenna radiator for radiating electromagnetic wave signals in a low-frequency band, that is, the frequency band of the first resonant mode can be adjusted on the premise of not increasing the length of the antenna radiator 110, so that the resonant frequency point of the first resonant mode can be shifted to a smaller resonant frequency point, and the frequency band of the first resonant mode can be greatly adjusted. Thus, the length of the effective antenna radiator 110 of the antenna radiator 110 working in the low frequency band can be effectively reduced, the miniaturized arrangement of the low frequency antenna is facilitated, the length of the antenna radiator in the antenna assembly, the space occupied by the antenna radiator and the cost can be reduced.

The specific circuit forms of the first matching circuit M1 and the second matching circuit M2 can be referred to fig. 5 to 12. The first matching circuit M1 and the second matching circuit M2 may be any one of the matching circuits shown in fig. 5 to 12, or may be a combination of the matching circuits shown in fig. 5 to 12, and in the embodiment of the present application, the specific circuit forms of the first matching circuit M1 and the second matching circuit M2 are not limited to the following examples.

As shown in fig. 5, the matching circuit may include a first inductance L1 and a first capacitance C1 connected in series.

As shown in fig. 6, the matching circuit may include a first inductance L1 and a first capacitance C1 connected in parallel.

As shown in fig. 7, the matching circuit may include a first inductor L1 and a first capacitor C1 connected in parallel, and a second capacitor C2, where one end of the second capacitor C2 is connected to a common node, and the common node is a connection node between the first inductor L1 and the first capacitor C1.

As shown in fig. 8, the matching circuit may include a first inductor L1 and a first capacitor C1 connected in parallel, and a second inductor L2, where one end of the second inductor L2 is connected to a common node, and the common node is a connection node between the first inductor L1 and the first capacitor C1.

As shown in fig. 9, the matching circuit may include a first series branch and a second capacitor C2, wherein the second capacitor C2 is connected in parallel with the first series branch, wherein the first series branch includes a first inductance L1 and a first capacitor C1 connected in series.

As shown in fig. 10, the matching circuit may include a first series branch and a second inductance L2, wherein the second inductance L2 is connected in parallel with the first series branch, wherein the first series branch includes a first inductance L1 and a first capacitance C1 connected in series.

As shown in fig. 11, the matching circuit may include a first parallel branch and a second parallel branch, wherein the first parallel branch and the second parallel branch are connected in series, wherein the first parallel branch includes a first inductance L1 and a first capacitance C1 connected in parallel, and the second parallel branch includes a second capacitance C2 and a second inductance L2 connected in parallel.

As shown in fig. 12, the matching circuit may include a first series leg and a second series leg, wherein the first series leg and the second series leg are connected in parallel, wherein the first series leg includes a first inductance L1 and a first capacitance C1 connected in series, and the second series leg includes a second inductance L2 and a second capacitance C2 connected in series.

As shown in fig. 13a and 13b, fig. 13a and 13b are schematic diagrams of main current flow in the first resonant mode. The first resonant mode is a quarter wavelength mode of the antenna radiator 110 corresponding from the ground point B to the first free end F1. As can be seen from fig. 13a and 13B, the current corresponding to the first resonant mode flows from the second matching circuit M2 to the first free end F1 via the ground point B.

As shown in fig. 14a and 14b, fig. 14a and 14b are schematic diagrams of main current flow in the second resonant mode. The second resonance mode is a quarter wavelength mode of the antenna radiator 110 corresponding from the feeding point a to the first free end F1. As can be seen from fig. 14a and 14b, the current corresponding to the second resonant mode flows from the first matching circuit M1 to the first free end F1 via the feeding point a.

As shown in fig. 15a and 15b, fig. 15a and 15b are schematic diagrams of main current flow in the third resonant mode. The third resonant mode is a quarter-wavelength mode of the antenna radiator 110 corresponding from the ground point B to the first free end F1. As can be seen from fig. 15a and 15b, the current corresponding to the third resonant mode flows from the first matching circuit M1 to the first free end F1 via the feeding point a.

In one embodiment, the resonant modes of the antenna assembly include a fourth resonant mode supporting the uhf band in addition to the first, second and third resonant modes mentioned previously. Fig. 16 is a graph of return loss for a first resonant mode, a second resonant mode, a third resonant mode, and a fourth resonant mode of the antenna assembly shown in fig. 1. Fig. 17 is a graph of return loss for the first, second, third, and fourth resonant modes of the antenna assembly shown in fig. 2. As can be seen from return loss curves of the third resonance mode (denoted as mode three in the figure) and the fourth resonance mode (denoted as mode four in the figure), the frequency bands supported by the third resonance mode and the fourth resonance mode are ultra-high frequency bands, wherein the frequency of the resonance point of the ultra-high frequency band corresponding to the fourth resonance mode is higher than the frequency of the resonance point of the ultra-high frequency band corresponding to the third resonance mode.

As shown in fig. 18a and 18b, fig. 18a and 18b are schematic diagrams of main current flow in the fourth resonant mode. The fourth resonance mode is a one-time wavelength mode of the antenna radiator 110 corresponding to the first free end F1 to the second free end F2. As can be seen from fig. 18a and 18b, the current corresponding to the fourth resonant mode is from the first free end F1 to the second free end F2.

By providing the first matching circuit M1 and the second matching circuit M2, the simulation of the antenna assembly shown in fig. 1 results in an efficiency graph of the antenna assembly shown in fig. 19. As can be seen from the figure, the antenna assembly can support the low frequency band and the WI-FI dual band (WI-FI 2.4GHz and WI-FI 5 GHz), and the low frequency band and the WI-FI dual band have better efficiency.

By providing the first matching circuit M1 and the second matching circuit M2, the simulation of the antenna assembly shown in fig. 2 results in an efficiency graph of the antenna assembly shown in fig. 20. As can be seen from the figure, the antenna assembly can support the low frequency band and the WI-FI dual band (WI-FI 2.4GHz and WI-FI 5 GHz), and the low frequency band and the WI-FI dual band have better efficiency.

Alternatively, full coverage of the low frequency band may be achieved by changing at least one of the matching parameters of the respective matching devices included in the first matching circuit M1, and the connection relationship between the matching devices.

In one embodiment, the low frequency band includes a plurality of low frequency sub-bands. The low frequency sub-bands may include B5 band, B8 band, B28 band, N28 band, GPS L1 band, GPS L5 band, etc. As shown in fig. 21, the antenna assembly includes an antenna radiator 110, a feed source S, a first matching circuit M1, a second matching circuit M2, a switching circuit 120, and at least one tuning circuit M3. The tuning circuit is used for tuning the resonance frequency of the electromagnetic wave signal corresponding to the low-frequency sub-band. The switch circuit 120 is connected to the second matching circuit M2 and each tuning circuit M3, and selectively turns on a path between at least one target circuit and the ground point B. The target circuit is a second matching circuit or any tuning circuit. Wherein the tuning circuit M3 includes at least an inductance, wherein a circuit composition form of the tuning circuit M3 may be the same as that of the second matching circuit. The tuning parameters of the tuning circuit may be the same as or different from the matching parameters of the second matching circuit. The antenna assembly can control the switch circuit to conduct the passage between the target circuit and the grounding point of the antenna radiator according to actual communication requirements so as to realize the switching among a plurality of low-frequency sub-bands, improve the frequency band range of the low-frequency antenna and further improve the communication performance of electromagnetic wave signals of the low-frequency band.

It should be noted that, the number, the combination and the connection of the tuning devices included in each tuning circuit M3 in the embodiment of the present application are not limited to the above distance description.

The embodiment of the application also provides the electronic equipment, and the antenna assembly in any of the previous embodiments. Wherein the antenna radiator 110 of the antenna assembly may be formed in a conductive member of the electronic device. The conductive member may be a PCB board, a conductive frame, or the like. In the embodiment of the present application, the specific type of the antenna radiator 110 is not limited, and the conductive element in the electronic device is not further limited.

The embodiment of the application provides electronic equipment, which comprises the antenna assembly, and comprises an antenna radiator, a feed source, a first matching circuit and a second matching circuit, wherein the first matching circuit is respectively connected to the feed source and the feed point of the antenna radiator, the second matching circuit is respectively connected to a ground terminal and the ground point of the antenna radiator, and the antenna radiator can be excited to play at least three resonance modes under the action of excitation signals provided by the feed source through mutual matching of the first matching circuit and the second matching circuit so as to support the receiving and transmitting of electromagnetic wave signals of a low frequency band, a high frequency band and an ultrahigh frequency band, for example, carrier aggregation (Carrier Aggregation, CA) of the low frequency band, the high frequency band and the ultrahigh frequency band is realized, so that the carrier aggregation (Carrier Aggregation, CA) of the low frequency band, the high frequency band and the ultrahigh frequency band can support a wider frequency band, and the communication performance of the antenna assembly can be improved. In addition, the antenna component provided by the embodiment of the application supports at least three resonant modes by adopting a mode of sharing a feeding point and a common antenna radiator, so as to realize the receiving and transmitting of electromagnetic wave signals in a low-frequency band, a high-frequency band and an ultrahigh-frequency band, reduce the occupied space of the antenna component and facilitate the miniaturization setting of the antenna component.

As shown in fig. 22 and 23, in an embodiment, an electronic device is taken as an example of a mobile phone. In one embodiment, the electronic device 10 further comprises: a bezel 11, a display screen assembly 12, and a control module 13. The display screen assembly 12 is disposed on the frame 11, and the display screen assembly 12 includes a display screen, where the display screen may use an OLED (Organic Light-Emitting Diode) screen, or may use an LCD (Liquid CRYSTAL DISPLAY) screen, and the display screen may be used to display information and provide an interactive interface for a user. The display screen can be rectangular or arc corner rectangular, and the arc corner rectangle can be sometimes called a round corner rectangle, namely, four corners of the rectangle adopt arc transition, and four sides of the rectangle are approximately straight-line segments.

The bezel 11 may be made of a metal material such as aluminum alloy or magnesium alloy or stainless steel, and the bezel 11 is provided at the outer circumference of the display screen assembly 12 for supporting and protecting the display screen assembly 12. The frame 11 may further extend into the electronic device to form a middle plate, and the integrally formed middle plate and frame 11 are sometimes referred to as a middle frame. The display screen assembly 12 may be fixedly connected to the frame 11 or the middle plate by a dispensing process or the like.

The electronic device may further include a motherboard 14, where the feed source, the first matching circuit M1, the first matching circuit M2, and the tuning circuit M3 in the antenna assembly are all disposed on the motherboard 14, and a ground point of the antenna radiator may be connected to a ground layer of the motherboard 14.

In one embodiment, referring to fig. 22, the border 11 is generally rectangular in shape, and the middle frame is a metal conductive middle frame, which includes a top frame 1101 and a bottom frame 1103 that are disposed opposite to each other, and a first side frame 1102 and a second side frame 1104 that are disposed opposite to each other, where the top frame 1101, the first side frame 1102, the bottom frame 1103, and the second side frame 1104 are connected end to end in sequence. Specifically, the connection between the frames can be right angle connection or arc transition connection. Further, the antenna radiator 110 in the antenna assembly is formed on either side frame, for example, may be formed on the first side frame 1102 or the second side frame 1104. For example, as shown in fig. 23, the antenna radiator 110 of the antenna assembly may be formed on the second side frame 1104. It should be noted that, in the embodiment of the present application, the area of the antenna radiator 110 formed in the conductive frame 11 in the antenna assembly is not limited to the above-mentioned example.

Alternatively, the electronic device may include a plurality of antenna assemblies, and the antenna radiator in each of the antenna assemblies may be formed on the first side frame and the second side frame. For ease of description, the electronic device will be described as including a first antenna assembly and a second antenna assembly. The antenna radiator of the first antenna component is formed on the first side frame, and the antenna radiator of the second antenna component is formed on the second side frame.

By arranging the first antenna assembly and the second antenna assembly in the electronic equipment, the receiving and transmitting of electromagnetic wave signals of a low frequency band, a high frequency band and an ultra-high frequency band can be supported, so that the 2 x 2 multiple input multiple output (Multiple Input Multiple Output, MIMO) function of WI-FI signals can be supported by the carrier aggregation function of the full frequency band, the double connection of 4G LTE signals and 5G NR signals of different ENDC combinations can be supported, and the communication performance of the electronic equipment can be improved.

As shown in fig. 24, further illustratively describing the electronic device as the mobile phone 10, specifically, as shown in fig. 24, the mobile phone 10 may include a memory 21 (which optionally includes one or more computer readable storage media), a processing circuit 22, a control circuit 23, and an input/output (I/O) subsystem 24. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will appreciate that the handset 10 shown in fig. 24 is not limiting and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. The various components shown in fig. 24 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in the memory 21 include an operating system 211, a communication module (or instruction set) 212, a Global Positioning System (GPS) module (or instruction set) 213, and the like.

The processing circuitry 22 and other control circuitry 23 may be used to control the operation of the handset 10. The processing circuitry 22 may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

Where the I/O subsystem 24 couples input/output peripheral devices on the handset 10, such as keypads and other input control devices, to the peripheral interface 23. The I/O subsystem 24 optionally includes a touch screen, keys, tone generator, accelerometer (motion sensor), ambient light sensor and other sensors, light emitting diodes, and other status indicators, data ports, etc. Illustratively, a user may control the operation of the handset 10 by supplying commands via the I/O subsystem 24, and may use the output resources of the I/O subsystem 24 to receive status information and other outputs from the handset 10. For example, the user may activate the handset or deactivate the handset by pressing button 241.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. An antenna assembly, the antenna assembly comprising:

The antenna radiator comprises a first free end and a second free end, wherein a feed point and a grounding point are arranged between the first free end and the second free end;

a feed source for providing an excitation signal;

the first end of the first matching circuit is connected with the feed source, and the second end of the first matching circuit is connected with the feed point;

The first end of the second matching circuit is connected with the grounding point, and the second end of the second matching circuit is grounded; wherein,

The antenna assembly has at least three resonant modes to support a low frequency band, a high frequency band, and an ultra-high frequency band.

2. The antenna assembly of claim 1, wherein the at least three resonant modes include a first resonant mode supporting a low frequency band, a second resonant mode supporting a high frequency band, and a third resonant mode supporting the ultra-high frequency band.

3. The antenna assembly of claim 2, wherein the first resonant mode is a quarter-wavelength mode of the corresponding antenna radiator from the ground point to the first free end;

The second resonance mode is a quarter-wavelength mode of the antenna radiator corresponding to the first free end from the feed point;

The third resonant mode is a quarter wavelength mode of the antenna radiator corresponding from the feed point to the second free end.

4. The antenna assembly of claim 2, wherein the at least three resonant modes further comprise a fourth resonant mode supporting the ultra-high frequency band.

5. The antenna assembly of claim 4, wherein the fourth resonant mode is a one-time wavelength mode of the corresponding antenna radiator from the first free end to the second free end.

6. The antenna assembly of claim 1, wherein the second matching circuit comprises at least an inductance.

7. The antenna assembly of claim 1, wherein the low frequency band comprises a plurality of low frequency sub-bands, the antenna assembly further comprising a switch circuit and at least one tuning circuit, wherein the switch circuit is respectively connected to the second matching circuit and each tuning circuit for selectively switching on a path between the second matching circuit or each tuning circuit and the ground point, and the tuning circuit is used for tuning a resonant frequency of an electromagnetic wave signal corresponding to the low frequency sub-band.

8. The antenna assembly of claim 1, wherein the feed point is disposed closer to the first free end than the ground point or the ground point is disposed closer to the first free end than the feed point.

9. The antenna assembly of claim 1, wherein the low frequency band comprises a low frequency band of at least one of a GPS signal, a 4G signal, and a 5G signal; the high-frequency band at least comprises a wireless fidelity WI-FI 2.4GHz band, and the ultra-high-frequency band at least comprises a wireless fidelity WI-FI 5GHz band.

10. An electronic device, comprising: at least one antenna assembly according to any of claims 1-8.

11. The electronic device of claim 10, comprising first and second oppositely disposed side frames, and top and bottom oppositely disposed side frames, wherein the top, first, bottom and second side frames are connected end-to-end in sequence, wherein the antenna radiator in at least one of the antenna assemblies is formed on either the first or second side frame.