WO2023160131A1 - Antenna assembly and electronic device - Google Patents

Abstract

Provided in the present application are an antenna assembly and an electronic device. The antenna assembly comprises a first and a second antenna, wherein the first antenna comprises a first radiator, a first matching circuit and a first signal source; the first signal source is electrically connected to the first radiator by means of the first matching circuit; the second antenna comprises a second radiator, a second matching circuit and a second signal source; one end of the second radiator is grounded, the other end thereof and one end of the first radiator form a coupling slot, and the other end of the first radiator is grounded; the second signal source electrically connects the second matching circuit to the second radiator; the second matching circuit comprises a frequency selection filtering sub-circuit and a bandpass sub-circuit; one end of the frequency selection filtering sub-circuit is electrically connected to a connection point of the second radiator, and the other end thereof is grounded; one end of the bandpass sub-circuit is electrically connected to the connection point, and the other end thereof is electrically connected to the second signal source; and the first antenna supports a first and a second frequency band, and the second antenna supports a third frequency band. The antenna assembly in the present application has a relatively good communication effect.

Description

Antenna components and electronics

This application claims the priority of the earlier application with application number 202210164088.5 filed on February 22, 2022 entitled "Antenna Components and Electronic Devices", the contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of communications, and in particular to an antenna assembly and electronic equipment.

Background technique

With the development of technology, the popularity of electronic devices with communication functions such as mobile phones is getting higher and higher, and their functions are becoming more and more powerful. An antenna component is usually included in an electronic device to realize the communication function of the electronic device. However, the communication performance of the antenna assembly in the electronic equipment in the related art is not good enough, and there is room for improvement.

Contents of the invention

In a first aspect, the present application provides an antenna assembly. The antenna assembly includes:

a first antenna, the first antenna includes a first radiator, a first matching circuit and a first signal source, the first radiator has a first ground terminal and a first free terminal, the first ground terminal is grounded, The first signal source is electrically connected to the first radiator through the first matching circuit; and

a second antenna, the second antenna includes a second radiator, a second matching circuit, and a second signal source, the second radiator has a second ground end and a second free end, the second ground end is grounded, The second free end is spaced apart from the first free end and forms a coupling slot, the second radiator is coupled with the first radiator through the coupling slot, and the second signal source is electrically connected to the The second matching circuit is connected to the second radiator, and the second radiator also has a connection point. The second matching circuit includes a frequency selection filter subcircuit and a bandpass subcircuit, and one end of the frequency selection filter subcircuit The connection point is electrically connected, and the other end is grounded. The frequency selection filter sub-circuit is a band-stop circuit of the third frequency band, and is a band-pass circuit of the second frequency band; one end of the band-pass sub-circuit is electrically connected to the connection point, the other end is electrically connected to the second signal source, and the band-pass sub-circuit is a band-pass circuit of the third frequency band;

The first antenna is used to support the first frequency band and the second frequency band, and the second antenna is used to support the third frequency band.

In a second aspect, the present application further provides an electronic device, the electronic device includes the antenna assembly as described in the first aspect, the electronic device has a top and a bottom, the first radiator and the second radiator are set on the top.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the implementation manner. Obviously, the drawings in the following description are some implementation manners of the application, which are common to those skilled in the art. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of an antenna assembly provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a second matching circuit provided by an embodiment in FIG. 1;

Fig. 3 is a schematic circuit structure diagram of an embodiment of the frequency selection filter sub-circuit shown in Fig. 2;

FIG. 4 is a schematic diagram of a second matching circuit provided by another embodiment in FIG. 1;

FIG. 5 is a schematic diagram of a second matching circuit provided in another implementation manner in FIG. 1;

Fig. 6 is a schematic circuit structure diagram of a bandpass sub-circuit provided by an embodiment in Fig. 5;

FIG. 7 is a schematic diagram of the circuit structure of a band-resistance sub-circuit provided by an embodiment in FIG. 5;

FIG. 8 is a schematic diagram of a second matching circuit provided in another implementation manner in FIG. 1;

FIG. 9 is a schematic diagram of a tuning subcircuit provided by an embodiment in FIG. 8;

FIG. 10 is a schematic diagram of a tuning subcircuit provided in another implementation manner in FIG. 8;

11 is a schematic diagram of the S parameters of the first antenna and the second antenna when the switch in the antenna assembly is in an off state;

12 is a schematic diagram of the S parameters of the first antenna and the second antenna when the switch in the antenna assembly is in a closed state;

Fig. 13 is a schematic diagram of the current distribution corresponding to the first resonant mode in the antenna assembly provided by an embodiment;

Fig. 14 is a schematic diagram of the current distribution corresponding to the second resonant mode in the antenna assembly provided by an embodiment;

Fig. 15 is a schematic diagram of the current distribution corresponding to the third resonant mode in the antenna assembly provided by an embodiment;

Fig. 16 is a schematic diagram of the current distribution corresponding to the fourth resonant mode in the antenna assembly provided by an embodiment;

FIG. 17 is a schematic diagram of an antenna assembly provided in another embodiment of the present application;

FIG. 18 is a schematic diagram of an antenna assembly provided in another embodiment of the present application;

FIG. 19 is a schematic diagram of the current distribution of the fifth resonant mode corresponding to the antenna assembly shown in FIG. 17;

FIG. 20 is a schematic diagram of the current distribution of the fifth resonance mode corresponding to the antenna assembly shown in FIG. 18;

FIG. 21 is a schematic diagram of an antenna assembly provided in another embodiment of the present application;

FIG. 22 is a three-dimensional structural diagram of an electronic device provided in an embodiment of the present application;

Fig. 23 is a cross-sectional view of line I-I in Fig. 22 provided by an embodiment;

Fig. 24 is a top view of a conductive frame in an embodiment of the present application;

Fig. 25 is a top view of a conductive frame in another embodiment of the present application;

Fig. 26 is a schematic diagram of the positions of the first radiator and the second radiator in the electronic device in an embodiment;

FIG. 27 is a schematic diagram of the upper hemisphere efficiency of the antenna assembly shown in FIG. 1 .

Main component number:

Electronic device 1, antenna assembly 10, first antenna 110, first radiator 111, first ground terminal 1111, first free terminal 1112, first matching circuit M1, first signal source S1, third radiator 113, the first The second antenna 120, the second radiator 121, the second ground terminal 1211, the second free terminal 1212, the coupling end surface 121a, the second matching circuit M2, the frequency selection filter sub-circuit 1221, the first inductor L1, the first capacitor C1, the second Two capacitors C2, a switch 1222, a bandpass sub-circuit 1223, a second capacitor C2, a third inductor L3, a second signal source S2, a tuning sub-circuit 1224, a first tuning unit m1, a second tuning unit m2, and a third tuning unit m3, the first sub-current I1, the second sub-current I2, the third sub-current I3, the fourth sub-current I4, the fifth sub-current I5, the sixth sub-current I6, the conductive frame 20, the frame body 210, the first Conductive section 220, second conductive section 230, middle frame 30, screen 40, circuit board 50, battery cover 60, top 1a, bottom 1b, first side 11, second side 12, third side 13, fourth side 14 .

Detailed ways

The first aspect of the present application provides an antenna assembly, and the antenna assembly includes:

a first antenna, the first antenna includes a first radiator, a first matching circuit and a first signal source, the first radiator has a first ground terminal and a first free terminal, the first ground terminal is grounded, The first signal source is electrically connected to the first radiator through the first matching circuit; and

a second antenna, the second antenna includes a second radiator, a second matching circuit, and a second signal source, the second radiator has a second ground end and a second free end, the second ground end is grounded, The second free end is spaced apart from the first free end and forms a coupling slot, the second radiator is coupled with the first radiator through the coupling slot, and the second signal source is electrically connected to the The second matching circuit is connected to the second radiator, and the second radiator also has a connection point. The second matching circuit includes a frequency selection filter subcircuit and a bandpass subcircuit, and one end of the frequency selection filter subcircuit The connection point is electrically connected, and the other end is grounded. The frequency selection filter sub-circuit is a band-stop circuit of the third frequency band, and is a band-pass circuit of the second frequency band; one end of the band-pass sub-circuit is electrically connected to the connection point, the other end is electrically connected to the second signal source, and the band-pass sub-circuit is a band-pass circuit of the third frequency band;

The first antenna is used to support the first frequency band and the second frequency band, and the second antenna is used to support the third frequency band.

Wherein, the frequency selective filtering sub-circuit includes:

a first inductor, one end of the first inductor is electrically connected to the connection point;

a first capacitor connected in parallel with the first inductor; and

A second inductor, one end of the second inductor is electrically connected to the node where the first capacitor is connected in parallel with the first inductor, and the other end is grounded.

Wherein, the second matching circuit also includes:

a switch, the other end of the frequency selective filtering sub-circuit is grounded through the switch;

When the switch is in the off state, the first antenna supports the first sub-frequency band and the second sub-frequency band in the first frequency band, wherein the frequency of the first sub-frequency band is lower than the frequency of the second sub-frequency band ;

When the switch is in the closed state, the first antenna supports at least the first sub-frequency band in the first frequency band.

Wherein, the bandpass sub-circuit includes a second capacitor and a third inductor, and the second capacitor is connected in series with the third inductor; or,

The bandpass sub-circuit includes a second capacitor and a third inductor, and the second capacitor is connected in parallel with the third inductor.

Wherein, the second matching circuit also includes:

A tuning sub-circuit, where the tuning sub-circuit is used to tune the resonance point of the third frequency band.

Wherein, the tuning subcircuit includes:

A first tuning unit, one end of the first tuning unit is electrically connected to the second signal source, and the other end is electrically connected to the connection point.

Wherein, the tuning subcircuit further includes at least one of a second tuning unit and a third tuning unit;

When the tuning subcircuit includes a second tuning unit, one end of the second tuning unit is grounded, and the other end is electrically connected to the other end of the first tuning unit;

When the tuning sub-circuit includes a third tuning unit, one end of the third tuning unit is grounded, and the other end of the third tuning unit is electrically connected to the second signal source.

Wherein, the first tuning unit includes a capacitor; when the tuning subcircuit includes the second tuning unit, the second tuning unit includes a capacitor or an inductor; when the tuning subcircuit includes a third tuning unit, The third tuning unit includes a capacitor or an inductor.

Wherein, when the switch is in the off state, the first antenna has a first resonant mode, a second resonant mode and a third resonant mode, wherein the first resonant mode is used to support the first frequency band The first sub-frequency band, the second resonance mode is used to support the second sub-frequency band of the first frequency band, and the third resonance mode is used to support the second frequency band.

Wherein, when the switch is in the closed state, the first antenna has a first resonant mode, a second resonant mode, a fourth resonant mode and a fifth resonant mode, wherein the first resonant mode and the second resonant mode Each resonance mode supports at least a first sub-frequency band in the first frequency band, and both the fourth resonance mode and the fifth resonance mode are used to support the second frequency band.

Wherein, the flow direction of the current corresponding to the first resonance mode is: from the second ground terminal to the second free terminal, from the second free terminal to the first free terminal via the coupling gap, and flowing from the first free end to the first ground end.

Wherein, the flow direction of the current corresponding to the second resonance mode is:

From the first signal source to the connection point between the first radiator and the first matching circuit, and flow to the first free end, from the first free end to the second free end through the coupling gap end, and flow from the second free end to the second ground end.

Wherein, the current corresponding to the third resonance mode includes:

a first sub-current, the first sub-current flows from the first ground terminal to the first free terminal; and

A second sub-current, the second sub-current flows from the second ground terminal to the second free terminal.

Wherein, the flow direction of the current corresponding to the fourth resonance mode is:

Flow from the first signal source to the first free end through the first matching circuit, the connection point between the first matching circuit and the first radiator, and through the first free end through the coupling The slit flows to the second free end, and flows from the second free end to the connection point of the second radiator, the second matching circuit to the ground electrode.

Wherein, the distance d1 between the connection point of the second radiator and the second free end satisfies: 0≤d1≤L/2, where L is the length of the second radiator.

Wherein, when the distance between the connection point of the second radiator and the coupling end face is d1=L/2, the current corresponding to the fifth resonance mode includes:

a third sub-current, the third sub-current flows from the first signal source to the first free end via the first matching circuit, the connection between the first matching circuit and the first radiator; and

A fourth sub-current, the fourth sub-current passes through the second matching circuit, the connection point between the second matching circuit and the second radiator to the second free end.

Wherein, when the distance between the connection point of the second radiator and the coupling end face is d1=0, the current corresponding to the fifth resonance mode includes:

a fifth sub-current, the fifth sub-current flows from the second matching circuit to the connection point of the second radiator, and flows from the connection point of the second radiator toward the second ground terminal; as well as

A sixth sub-current, where the sixth sub-current flows from the second ground terminal toward the first free terminal.

Wherein, the first antenna also includes:

A third radiator, the third radiator is electrically connected to the first matching circuit, and the third radiator is used to support the second frequency band or the fourth frequency band, wherein the fourth frequency band is different from the any one of the first frequency band, the second frequency band and the third frequency band.

Wherein, the first frequency band is the MHB frequency band, the second frequency band is the UHB frequency band, and the third frequency band is the GPS-L5 frequency band.

The second aspect of the present application provides an electronic device, the electronic device includes the antenna assembly according to any one of the first aspect or the first aspect, the electronic device has a top and a bottom, the first radiator and the The second radiators are all arranged on the top.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Reference herein to "an embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides an antenna assembly 10 . The antenna assembly 10 can be applied to an electronic device 1 (see FIG. 22 ), and the electronic device 1 includes, but is not limited to, a mobile phone, an Internet device (mobile internet device, MID), an electronic book, a portable playback station (Play Station Portable , PSP) or Personal Digital Assistant (Personal Digital Assistant, PDA) and other devices with communication functions.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of an antenna assembly provided in an embodiment of the present application. The antenna assembly 10 includes a first antenna 110 and a second antenna 120 . The first antenna 110 includes a first radiator 111 , a first matching circuit M1 and a first signal source S1 . The first radiator 111 has a first ground end 1111 and a first free end 1112 . The first ground terminal 1111 is grounded, and the first signal source S1 is electrically connected to the first radiator 111 through the first matching circuit M1. The second antenna 120 includes a second radiator 121 , a second matching circuit M2 and a second signal source S2 . The second radiator 121 has a second ground end 1211 and a second free end 1212 . The second ground end 1211 is grounded, the second free end 1212 is spaced apart from the first free end 1112 and forms a coupling slot 120a, and the second radiator 121 communicates with the first free end 120a through the coupling slot 120a. The radiator 111 is coupled, and the second signal source S2 is electrically connected to the second matching circuit M2 to the second radiator 121 . The first antenna 110 is used to support the first frequency band and the second frequency band, and the second antenna 120 is used to support the third frequency band.

In addition, it should be noted that the terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The first radiator 111 is a flexible printed circuit (Flexible Printed Circuit, FPC) antenna radiator or a laser direct structuring (Laser Direct Structuring, LDS) antenna radiator, or a printing direct structuring (Print Direct Structuring, PDS) antenna radiator, or a metal branch.

The first signal source S1 is used to generate a radio frequency signal, and for convenience of description, the radio frequency signal generated by the first signal source S1 is named as a first radio frequency signal.

One end of the first matching circuit M1 is electrically connected to the first radiator 111, and the other end of the first matching circuit M1 is electrically connected to the first signal source S1 for loading the first radio frequency signal to the first radiator 111. The first radiator 111 has a connection point, for convenience of description, the connection point of the first radiator 111 is named connection point A. One end of the first matching circuit M1 is electrically connected to the connection point A of the first radiator 111 . The first matching circuit M1 is used to adjust the equivalent electrical length of the first antenna 110 so that the first antenna 110 supports the transmission and reception of electromagnetic wave signals in the first frequency band and the second frequency band.

The second radiator 121 is an FPC antenna radiator, or an LDS antenna radiator, or a PDS antenna radiator, or a metal branch. In one embodiment, the type of the first radiator 111 is the same as that of the second radiator 121; in other embodiments, the type of the first radiator 111 may be the same as that of the second radiator 121 are of different types, which is not limited in this application.

The second signal source S2 is used to generate a radio frequency signal, and for convenience of description, the radio frequency signal generated by the second signal source S2 is named as a second radio frequency signal.

One end of the second matching circuit M2 is electrically connected to the second radiator 121, and the other end of the second matching circuit M2 is electrically connected to the second signal source S2 for loading the second radio frequency signal to The second radiator 121 . The second radiator 121 has a connection point, and the connection point of the second radiator 121 is named connection point B for convenience of description. One end of the second matching circuit M2 is electrically connected to the connection point B of the second radiator 121 . The second matching circuit M2 is used to adjust the equivalent electrical length of the second antenna 120 so that the second antenna 120 supports the transmission and reception of electromagnetic wave signals in the third frequency band. The specific structure of the second matching circuit M2 will be described in detail later.

In the antenna assembly 10 provided by the embodiment of the present application, the second free end 1212 is spaced apart from the first free end 1112 and forms a coupling slot 120a, so that the first antenna 110 can not only use the first The radiator 111 can also use the second radiator 121 so that the first antenna 110 can support the first frequency band and the second frequency band, therefore, the antenna assembly 10 has a better communication effect. Correspondingly, when the second antenna 120 works, not only the second radiator 121 but also the first radiator 111 can be used. In other words, the first antenna 110 and the second antenna 120 are co-aperture antennas. In the case where the frequency band of the electromagnetic wave signal sent and received by the first antenna 110 is fixed, compared with the situation where the first antenna 110 can only use the first radiator 111 but cannot use the second radiator 121 when the first antenna 110 is working, the present application The length of the first radiator 111 of the first antenna 110 in the antenna assembly 10 provided in the embodiment is relatively short. In addition, when the frequency band of the electromagnetic wave signal sent and received by the second antenna 120 is fixed, compared with the situation where the second antenna 120 can only use the second radiator 121 and cannot use the first radiator 111 when it is working, The length of the second radiator 121 of the second antenna 120 in the antenna assembly 10 provided in the embodiment of the present application is relatively short. It can be seen that the lengths of the first radiator 111 and the second radiator 121 in the antenna assembly 10 provided in the embodiment of the present application are both relatively short, and the antenna assembly 10 is small in size and occupies a small space. When the antenna assembly 10 is applied in the electronic device 1 , it is convenient to be arranged with other devices in the electronic device 1 .

In one embodiment, the dimension d of the coupling gap 120a between the first radiator 111 and the second radiator 121 is: 0.5mm≤d≤2.0mm. The size of the coupling slot 120 a refers to the size of the coupling slot 120 a in the direction in which the first radiator 111 and the second radiator 121 are arranged. Please refer to FIG. 1 for details, in which the dimension d is schematically shown. The gap size d between the first radiator 111 and the second radiator 121 is selected within the above range, so as to ensure a good coupling effect between the first radiator 111 and the second radiator 121 . Further optionally, 0.5mm≤d≤1.5mm, so that the coupling between the first radiator 111 and the second radiator 121 is higher and better. It can be understood that the coupling gap 120a between the first radiator 111 and the second radiator 121 may not be the above value, as long as the first radiator 111 and the second radiator 121 It only needs to be able to couple with each other through the coupling gap 120a.

In one embodiment, the first frequency band is a middle high frequency (Middle High Band, MHB) frequency band, the second frequency band is an ultra high frequency (Ultra High Band, UHB) frequency band, and the third frequency band is GPS-L5 band.

In another embodiment, the first frequency band is a low frequency (Lower Band, LB) frequency band, and the second frequency band is an MHB frequency band. In yet another implementation manner, the first frequency band is an LB frequency band, and the second frequency band is a UHB frequency band.

The range of the LB frequency band is a frequency band lower than 1000MHz. The range of the MHB frequency band is 1000MHz-3000MHz, and the range of the UHB frequency band is 3000MHz-6000MHz. It should be noted that the GPS mentioned here refers to positioning, including but not limited to Global Positioning System (Global Positioning System, GPS) positioning, Beidou positioning, GLONASS positioning, GALILEO positioning, etc. The resonant frequency of the GPS-L5 frequency band is 1176MHz.

Please refer to FIG. 1 and FIG. 2 together. FIG. 2 is a schematic diagram of a second matching circuit provided by an embodiment in FIG. 1 . The second radiator 121 has a connection point B. As shown in FIG. The second matching circuit M2 includes a frequency selection filter subcircuit 1221, one end of the frequency selection filter subcircuit 1221 is electrically connected to the connection point B, and the other end is grounded, and the frequency selection filter subcircuit 1221 is the third The band-stop circuit of the frequency band is a band-pass circuit of the second frequency band.

The first signal source S1 is loaded to the first radiator 111 through the first matching circuit M1 for enabling the first antenna 110 to support the first frequency band and the second frequency band. When the antenna assembly 10 is loaded with the second signal source S2, not only the second antenna 120 must support the third frequency band, but also the first frequency band and the second frequency band that the first antenna 110 originally works must not be affected. at least one of the frequency bands. Therefore, the second matching circuit M2 needs to be designed.

In the implementation manner of the present application, the second matching circuit M2 includes a frequency-selective filter sub-circuit 1221, and the frequency-selective filter sub-circuit 1221 is a band-stop circuit of the third frequency band and a band-pass circuit of the second frequency band. circuit, so that adding the second signal source S2 to the antenna assembly 10 can not only enable the second antenna 120 to support the third frequency band, but also cannot affect the second frequency band where the first antenna 110 originally works , therefore, the antenna assembly 10 provided by the embodiment of the present application has better communication performance. When the first frequency band is a middle high frequency (Middle High Band, MHB) frequency band, the second frequency band is an ultra high frequency (Ultra High Band, UHB) frequency band, and the third frequency band is a GPS-L5 frequency band, the The antenna assembly 10 has better performance in the MHB+UHB frequency band, and better performance in the GPS-L5 frequency band.

Please also refer to FIG. 3 . FIG. 3 is a schematic circuit structure diagram of an implementation manner of the frequency-selective filtering sub-circuit shown in FIG. 2 . In one implementation, the frequency selection filter sub-circuit 1221 includes a first inductor L1, a first capacitor C1 and a second inductor L2. One end of the first inductor L1 is electrically connected to the connection point. The first capacitor C1 is connected in parallel with the first inductor L1. One end of the second inductor L2 is electrically connected to the node where the first capacitor C1 is connected in parallel with the first inductor L1, and the other end is grounded.

The frequency selection filter sub-circuit 1221 presents different impedance characteristics for different frequency bands, and the parallel circuit of the first capacitor C1 and the first inductor L1 forms a band stop for the third frequency band, that is, for the third frequency band frequency band is high impedance. The first inductance L1, the first capacitor C1 and the second inductance L2 form a band pass for the second frequency band, that is, present a low impedance to the electromagnetic wave signal of the second frequency band. The frequency selection filter sub-circuit 1221 (in this embodiment, the first inductor L1, the first capacitor C1 and the second inductor L2) presents capacitance to the first frequency band.

Please refer to FIG. 1 and FIG. 4 together. FIG. 4 is a schematic diagram of a second matching circuit provided by another embodiment in FIG. 1 . The second matching circuit M2 further includes a switch 1222 . The other end of the frequency selection filter sub-circuit 1221 is grounded through the switch 1222 . In the schematic diagram of this embodiment, the second matching circuit M2 further includes a switch 1222 combined with the frequency selection filter sub-circuit 1221 including the first inductor L1, the first capacitor C1 and the second inductor L2 as an example for illustration. , understandably, should not be construed as a limitation on the second matching circuit M2 in the antenna assembly 10 provided in the present application.

It can be seen from the foregoing introduction that the frequency selection filter sub-circuit 1221 (in this embodiment, the first inductor L1 , the first capacitor C1 and the second inductor L2 ) presents capacitance to the first frequency band. Compared with the frequency selection filter subcircuit 1221 not provided in the second matching circuit M2, the frequency selection filter subcircuit 1221 is set in the second matching circuit M2, and the frequency selection filter subcircuit 1221 is opposite to the first frequency selection filter subcircuit 1221. One frequency band exhibits capacitance, which will cause the performance of the first frequency band to decline. In order to maintain the performance of the first frequency band, a switch 1222 is set in the second matching circuit M2, and the other end of the frequency selection filter sub-circuit 1221 The switch 1222 is grounded, so that the performance of the first frequency band is maintained with little degradation or even no degradation.

When the switch 1222 is in the off state, the first antenna 110 supports the first sub-frequency band and the second sub-frequency band in the first frequency band, wherein the frequency of the first sub-frequency band is lower than that of the second sub-frequency band Frequency of. In other words, when the first signal source S1 works in the first frequency band, the switch 1222 is in an off state.

When the switch 1222 is in the closed state, the first antenna 110 supports the first antenna 110 to support at least the first sub-frequency band in the first frequency band.

When the switch 1222 is in the closed state, the first antenna 110 supports at least the first sub-frequency band in the first frequency band, including: the first antenna 110 supports the first the first sub-frequency band in the frequency band, and does not support the second sub-frequency band in the first frequency band; or, the first antenna 110 supports the first sub-frequency band in the first frequency band, and the first antenna 110 supports a second sub-frequency band in the first frequency band.

The first antenna 110 supports the first sub-frequency band in the first frequency band, and does not support the second sub-frequency band in the first frequency band. In other words, when the first signal source S1 works in the When the first sub-frequency band is selected, the switch 1222 is in a closed state.

It should be noted that, in another embodiment, when the switch 1222 is in the closed state, the second radiator 121 enables the first antenna 110 to support and whether to support the second sub-frequency band in the first frequency band. For example, when the equivalent electrical length of the second radiator 121 is L1, when the switch 1222 is in a closed state, the first antenna 110 supports the first sub-frequency band in the first frequency band, and The second sub-band in the first frequency band is not supported. When the equivalent electrical length of the second radiator 121 is L2, when the switch 1222 is in the closed state, the first antenna 110 supports the first sub-frequency band in the first frequency band, and supports the The second frequency sub-band in the first frequency band, wherein L2<L1.

In this implementation manner, the first sub-frequency band is an intermediate frequency (Middle Band, MB) frequency band, and the second frequency band is an HB (High Band, HB) frequency band. The MB1000-2200MHz, such as B3 frequency band or B1 frequency band. The range of the HB frequency band is 2200-3000MHZ, such as B40 frequency band, or B41.

It should be noted that no matter whether the switch 1222 is in the closed state or in the open state, the third frequency band exists, and the resonant frequency point of the third frequency band does not change or changes little. Therefore, When the frequency selection filter sub-circuit 1221 includes the first inductor L1, the first capacitor C1, and the second inductor L2, the band-stop circuit of the first capacitor C1 and the first inductor L1 is The third frequency band mentioned above is isolated.

Please also refer to FIG. 5 . FIG. 5 is a schematic diagram of a second matching circuit provided in another implementation manner in FIG. 1 . The second matching circuit M2 further includes a band-pass sub-circuit 1223 . The second matching circuit M2 further includes a bandpass sub-circuit 1223 which can be combined into any implementation manner of the second matching circuit M2 described above. In the schematic diagram of this embodiment, the structure of the second matching circuit M2 should not be understood as a limitation to the second matching circuit M2 provided in this embodiment of the application. One end of the band-pass sub-circuit 1223 is electrically connected to the connection point B, and the other end is electrically connected to the second signal source S2, and the band-pass sub-circuit 1223 is a band-pass circuit of the third frequency band.

The band-pass sub-circuit 1223 is a band-pass circuit for the third frequency band, that is, it presents low impedance to the third frequency band and high impedance to other frequency bands (the first frequency band and the second frequency band in this embodiment). impedance, thereby isolating the other frequency bands. The antenna assembly 10 provided in the embodiment of the present application has better communication performance.

Please refer to FIG. 5 and FIG. 6 together. FIG. 6 is a schematic circuit structure diagram of the band-pass sub-circuit provided by an embodiment in FIG. 5 . In one embodiment, the bandpass sub-circuit 1223 includes a second capacitor C2 and a third inductor L3, and the second capacitor C2 is connected in series with the third inductor L3.

Please refer to FIG. 5 and FIG. 7 together. FIG. 7 is a schematic circuit structure diagram of the band-stop sub-circuit provided by an embodiment in FIG. 5 . The bandpass sub-circuit 1223 includes a second capacitor C2 and a third inductor L3, and the second capacitor C2 is connected in parallel with the third inductor L3.

Please refer to FIG. 1 and FIG. 8 together. FIG. 8 is a schematic diagram of a second matching circuit provided in another implementation manner in FIG. 1 . The second matching circuit M2 further includes a tuning sub-circuit 1224 . The tuning sub-circuit 1224 is used to tune the resonance point of the third frequency band.

The second matching circuit M2 further includes a tuning subcircuit 1224, which can be combined into any implementation manner of the second matching circuit M2 described above. In the schematic diagram of this embodiment, the structure of the second matching circuit M2 should not be understood as a limitation to the second matching circuit M2 provided in this embodiment of the application.

The so-called resonance point is also called the resonance frequency point. The tuning sub-circuit 1224 is used to tune the resonance point of the third frequency band, so that the antenna assembly 10 has better communication quality in the third frequency band.

Please refer to FIG. 8 and FIG. 9 together. FIG. 9 is a schematic diagram of a tuning sub-circuit provided by an embodiment in FIG. 8 . The tuning sub-circuit 1224 includes a first tuning unit m1. One end of the first tuning unit m1 is electrically connected to the second signal source S2, and the other end is electrically connected to the connection point B. It should be noted that, in this implementation manner, the other end of the first tuning unit m1 is electrically connected to the connection point B indirectly.

Please refer to FIG. 8 and FIG. 10 together. FIG. 10 is a schematic diagram of a tuning sub-circuit provided in another implementation manner in FIG. 8 . The tuning sub-circuit 1224 further includes at least one of the second tuning unit m2 and the third tuning unit m3. When the tuning sub-circuit 1224 includes a second tuning unit m2, one end of the second tuning unit m2 is grounded, and the other end is electrically connected to the other end of the first tuning unit m1. When the tuning sub-circuit 1224 includes a third tuning unit m3, one end of the third tuning unit m3 is grounded, and the other end of the third tuning unit m3 is electrically connected to the second signal source S2.

So-called, the tuning sub-circuit 1224 includes at least one of the second tuning unit m2 and the third tuning unit m3, including: the tuning sub-circuit 1224 includes the second tuning unit m2 and does not include the third tuning unit m3; Alternatively, the tuning sub-circuit 1224 includes the third tuning unit m3 and does not include the second tuning unit m2; or, the tuning sub-circuit 1224 includes the second tuning unit m2 and includes the third tuning unit m3. In the schematic diagram of this embodiment, the tuning sub-circuit 1224 also includes the second tuning unit m2 and the third tuning unit m3 as an example, which should not be understood as an explanation of the tuning sub-circuit 1224 provided in the embodiment of the present application. limited.

Specifically, the first tuning unit m1 includes a capacitor; when the tuning sub-circuit 1224 includes the second tuning unit m2, the second tuning unit m2 includes a capacitor or an inductor; when the tuning sub-circuit 1224 includes In the case of the third tuning unit m3, the third tuning unit m3 includes a capacitor or an inductor.

Please continue to refer to FIG. 10 , in this embodiment, the second matching circuit M2 includes a frequency-selective filter sub-circuit 1221 , a switch 1222 , a band-pass sub-circuit 1223 and a tuning sub-circuit 1224 as an example for illustration. In addition, the frequency selection sub-circuit includes a first inductor L1, a first capacitor C1, and a second inductor L2; the bandpass sub-circuit 1223 includes a second capacitor C2 and a third inductor L3 connected in series; and tuning The sub-circuit 1224 includes the first tuning unit m1 , the second tuning unit m2 and the third tuning unit m3 as an example for illustration.

In this embodiment, the inductance value of the first inductor L1 is equal to 30nH, the capacitance value of the first capacitor C1 is equal to 0.8pF, the inductance value of the second inductor L2 is equal to 1.8nH, and the inductance value of the third inductor L3 is The value is equal to 12nH, the capacitance value of the second capacitor C2 is equal to 1.5pF, the first tuning unit m1 is a capacitor, and the capacitance value is equal to 1.2pF; the second tuning unit m2 is a capacitor, and the capacitance value is equal to 1.5 pF; the third tuning unit m3 is a capacitor, and the capacitance of the third tuning unit m3 is 1.5pF.

Next, each resonance mode of the first antenna 110 will be introduced. Please refer to FIG. 11 . FIG. 11 is a schematic diagram of S parameters of the first antenna and the second antenna when the switch in the antenna assembly is in the off state. In this schematic diagram, the abscissa is the frequency, the unit is GHz; the ordinate is the S parameter, the unit is dB. Curve ① is the S11 curve of the first antenna 110 ; curve ② is the S11 curve of the second antenna 120 ; curve ③ is the S21 isolation curve of the first antenna 110 and the second antenna 120 . When the switch 1222 is in the off state, the first antenna 110 has a first resonant mode, a second resonant mode and a third resonant mode, wherein the first resonant mode is used to support the first frequency band The first sub-frequency band, the second resonance mode is used to support the second sub-frequency band of the first frequency band, and the third resonance mode is used to support the second frequency band.

The so-called resonance mode is also called resonance mode. It can be seen from the curve ① that the first antenna 110 has a first resonant mode, a second resonant mode and a third resonant mode. For ease of illustration in the figure, the first resonant mode is abbreviated as mode 1, the second resonant mode is abbreviated as mode 2, and the third resonant mode is abbreviated as mode 3. It can be seen from curve ① that the first resonant mode is used to support the first sub-band of the first frequency band (MB in this embodiment, such as the B3 frequency band), and the second resonant mode is used to support the first sub-band of the first frequency band. For the second sub-frequency band of the frequency band (in this embodiment, it is HB, such as B41 frequency band), the third resonance mode is used to support the second frequency band (in this embodiment, it is UHB, such as N78).

It can be seen from the curve ② that the second antenna 120 works in the third frequency band, which is the GPS-L5 frequency band in this embodiment.

It can be seen from the curve ③ that the first antenna 110 and the second antenna 120 have better isolation.

The length from the first ground end 1111 to the coupling slot 120a is 1/4 wavelength of the resonance frequency point corresponding to the first resonance mode; or, the length from the first ground end 1111 to the coupling slot 120a is about 1/4 wavelength of the resonance frequency point corresponding to the first resonance mode.

In other words, the first resonant mode corresponding to the first sub-frequency band is the 1/4 wavelength mode from the first ground terminal 1111 to the coupling slot 120a; or, the first resonant mode corresponding to the first sub-frequency band It is about a 1/4 wavelength mode from the first ground terminal 1111 to the coupling slot 120a.

The length from the second ground end 1211 to the coupling slot 120a is 1/4 wavelength of the resonance frequency point corresponding to the second resonance mode; or, the length from the second ground end 1211 to the coupling slot 120a is about 1/4 wavelength of the resonance frequency point corresponding to the second resonance mode.

In other words, the second resonant mode corresponding to the second sub-frequency band is the 1/4 wavelength mode from the second ground terminal 1211 to the coupling slot 120a; or, the second resonant mode corresponding to the second sub-frequency band It is about a 1/4 wavelength mode from the second ground terminal 1211 to the coupling slot 120a.

The second antenna 120 works in the third frequency band, which is the GPS-L5 frequency band in this embodiment. The resonant mode corresponding to the third frequency band is a 1/8-1/4 wavelength mode from the second ground terminal 1211 to the coupling slot 120a.

Please refer to FIG. 12 . FIG. 12 is a schematic diagram of S parameters of the first antenna and the second antenna when the switch in the antenna assembly is in a closed state. In this schematic diagram, the abscissa is the frequency, the unit is GHz; the ordinate is the S parameter, the unit is dB. Curve ① is the S11 curve of the first antenna 110 ; curve ② is the S11 curve of the second antenna 120 ; curve ③ is the S21 isolation curve of the first antenna 110 and the second antenna 120 .

When the switch 1222 is in the closed state, the first antenna 110 has a first resonant mode, a second resonant mode, a fourth resonant mode and a fifth resonant mode, wherein the first resonant mode and the second resonant mode Each resonance mode supports at least the first sub-frequency band (MB in this implementation) in the first frequency band, and both the fourth resonance mode and the fifth resonance mode are used to support the second frequency band (in this implementation mode is UHB).

It can be seen from curve ① that the first antenna 110 has a first resonant mode, a second resonant mode, a fourth resonant mode and a fifth resonant mode. For ease of illustration in the figure, the first resonant mode is abbreviated as mode 1, the second resonant mode is abbreviated as mode 2, the fourth resonant mode is abbreviated as mode 4, and the fifth resonant mode is abbreviated as mode 5. It can be seen from curve ① that both the first resonant mode and the second resonant mode support the first sub-frequency band in the first frequency band, and the fourth resonant mode and the fifth resonant mode are used to support all The second frequency band (UHB in this implementation manner) is mentioned. The supported frequency bands of the fourth resonance mode and the fifth resonance mode are 3.3GHz-4.2GHz, that is, N77 and N78 in UHB.

The length from the first signal source S1 to the coupling slot 120a is 1/4 wavelength of the resonance frequency point corresponding to the fourth resonance mode; or, the length from the first signal source S1 to the coupling slot 120a It is about 1/4 wavelength of the resonance frequency band corresponding to the fourth resonance mode.

In other words, the fourth resonance mode is the 1/4 wavelength mode from the first signal source S1 to the coupling slot 120a; or, the fourth resonance mode is the The 1/4 wavelength mode of the coupling slit 120a is described above.

The length from the second signal source S2 to the coupling slot 120a is 1/4 wavelength of the resonance frequency point corresponding to the fifth resonance mode; or, the length from the second signal source S2 to the coupling slot 120a It is about 1/4 wavelength of the resonance frequency point corresponding to the fifth resonance mode.

In other words, the fifth resonance mode is a 1/4 wavelength mode of the second signal source S2 to the coupling slot 120a; or, the fifth resonance mode is approximately the 1/4 wavelength mode of the coupling slot 120a.

It can be seen from FIG. 11 that when the switch 1222 is in an open state, the resonance frequency of the second resonance mode is 2.6 GHz; it can be seen from FIG. 12 that when the switch 1222 is in a closed state, the resonance frequency of the second resonance mode is 2.6 GHz. point is 2.3GHz, therefore, compared with the second resonance mode in Figure 11, the resonance frequency point of the resonance mode in Figure 12 shifts to a lower level, which improves the first sub-frequency band (in this embodiment mode, MB frequency band) performance. Specifically, it can be seen from FIG. 11 that when the switch 1222 is in the off state, the first resonance mode covers the first sub-frequency band (MB frequency band in this embodiment) in the first frequency band, and the second resonance mode covers the first sub-frequency band in the first frequency band. The second sub-frequency band in a frequency band (in this embodiment, the HB frequency band). It can be seen from FIG. 12 that when the switch 1222 is in the closed state, both the first resonance mode and the second resonance mode cover the first sub-frequency band in the first frequency band (MB frequency band in this embodiment).

It should be noted that, in another embodiment, when the switch 1222 is in the closed state, the second radiator 121 enables the first antenna 110 to support and whether to support the second sub-frequency band in the first frequency band. For example, when the equivalent electrical length of the second radiator 121 is L01, when the switch 1222 is in the closed state, the first antenna 110 supports the first sub-band in the first frequency band, and The second sub-band in the first frequency band is not supported. When the equivalent electrical length of the second radiator 121 is L02, when the switch 1222 is in the closed state, the first antenna 110 supports the first sub-frequency band in the first frequency band, and supports the The second sub-frequency band in the first frequency band, wherein L02<L01.

The main current distribution in each resonance mode is described below. It should be noted that the main current distribution in the following resonant modes does not represent the entire current distribution in each resonant mode. The fact that the current is large at the main current distribution in each resonance mode, while in other parts, does not mean that there is no current distribution, but that the current distribution is small. In addition, it should be said that since the current distribution of the first antenna 110 in the first resonant mode, the second resonant mode, the third resonant mode, the fourth resonant mode and the fifth resonant mode is considered, the The electrical connection of the second radiator 121 to the second signal source S2 through the second matching circuit M2 may be equivalent to the electrical connection of the second radiator 121 to the ground through the second matching circuit M2.

Please refer to FIG. 13 . FIG. 13 is a schematic diagram of the current distribution corresponding to the first resonant mode in the antenna assembly provided in an embodiment. The first resonance mode in this embodiment corresponds to the situation when the switch 1222 in the second matching circuit M2 is turned on or the switch 1222 is turned off or the second matching circuit M2 does not include the switch 1222 . When the first antenna 110 resonates in the first resonance mode, the first resonance mode corresponds to current: from the second ground terminal 1211 to the second free terminal 1212, from the second free terminal 1212 flows through the coupling slot 120a to the first free end 1112 , and flows from the first free end 1112 to the first ground end 1111 .

Please refer to FIG. 14 . FIG. 14 is a schematic diagram of a current distribution corresponding to the second resonant mode in the antenna assembly provided in an embodiment. The first resonance mode in this embodiment corresponds to the situation when the switch 1222 in the second matching circuit M2 is turned on or the switch 1222 is turned off or the second matching circuit M2 does not include the switch 1222 . The current corresponding to the second resonant mode: from the first signal source S1 to the connection point between the first radiator 111 and the first matching circuit M1, and flows to the first free end 1112, from the first A free end 1112 passes through the coupling slot 120 a to the second free end 1212 , and flows from the second free end 1212 to the second ground end 1211 .

Please refer to FIG. 15 , which is a schematic diagram of the current distribution corresponding to the third resonant mode in the antenna assembly provided in an embodiment. The current corresponding to the third resonance mode includes a first sub-current I1 and a second sub-current I2. The first sub-current I1 flows from the first ground terminal 1111 to the first free terminal 1112 . The second sub-current I2 flows from the second ground terminal 1211 to the second free terminal 1212 .

Please refer to FIG. 16 . FIG. 16 is a schematic diagram of current distribution corresponding to the fourth resonant mode in the antenna assembly provided in an embodiment. The flow direction of the current corresponding to the fourth resonant mode is: from the first signal source S1 through the first matching circuit M1, and the connection point between the first matching circuit M1 and the first radiator 111 to the The first free end 1112 flows to the second free end 1212 through the first free end 1112 through the coupling slot 120a, and flows from the second free end 1212 to the connection point of the second radiator 121 , The second matching circuit M2 is connected to the ground.

Please refer to FIG. 1 in conjunction with FIG. 17 and FIG. 18 . FIG. 17 is a schematic diagram of an antenna assembly provided by another embodiment of the present application; FIG. 18 is a schematic diagram of an antenna assembly provided by another embodiment of this application. The distance d1 between the connection point B of the second radiator 121 and the second free end 1212 satisfies: 0≤d1≤L/2. In other words, the second radiator 121 has a coupling end surface 121a facing the first free end 1112, and the distance between the connection point B of the second radiator 121 and the coupling end surface 121a d1 satisfies: 0≤d1≤L/2, where L is the length of the second radiator 121 .

In FIG. 1 , the distance d1 between the connection point B of the second radiator 121 and the coupling end surface 121a satisfies: 0<d1<L/2, for example, d1=L/3. In FIG. 17, d1=L/2. In FIG. 18, d1=0.

Please refer to FIG. 17 and FIG. 19 together. FIG. 19 is a schematic diagram of the current distribution of the fifth resonance mode corresponding to the antenna assembly shown in FIG. 17 . When the distance between the connection point of the second radiator 121 and the coupling end surface 121a is d1=L/2, the current corresponding to the fifth resonance mode includes a third sub-current I3 and a fourth sub-current I4. The third sub-current I3 flows from the first signal source S1 to the first free end 1112 via the first matching circuit M1 and the connection between the first matching circuit M1 and the first radiator 111 . The fourth sub-current I4 reaches the second free end 1212 via the second matching circuit M2 , the connection point between the second matching circuit M2 and the second radiator 121 .

When the distance between the connection point of the second radiator 121 and the coupling end surface 121a is d1=L/3, the current corresponding to the fifth resonance mode includes the third sub-current I3 and the fourth For the description of the sub-current I4 , the third sub-current I3 and the fourth sub-current I4 , please refer to the previous description, which will not be repeated here. In other words, when the distance between the connection point of the second radiator 121 and the coupling end surface 121a is d1=L/3, the current distribution corresponding to the fifth resonance mode, and when the second radiator 121 The current distribution corresponding to the fifth resonant mode is the same when the distance d1=L/2 between the connection point of and the coupling end surface 121a.

Please refer to FIG. 18 and FIG. 20 together. FIG. 20 is a schematic diagram of the current distribution of the fifth resonant mode corresponding to the antenna assembly shown in FIG. 18 . When the distance d1 between the connection point of the second radiator 121 and the coupling end surface 121a=0, the current corresponding to the fifth resonance mode includes a fifth sub-current I5 and a sixth sub-current I6. The fifth sub-current I5 flows from the second matching circuit M2 to the connection point B of the second radiator 121 , and flows from the connection point B toward the second ground terminal 1211 . The sixth sub-current I6 flows from the second ground terminal 1211 toward the first free terminal 1112 .

For the convenience of description, the current corresponding to the fifth resonance mode is named the first distribution mode by the current distribution mode including the third sub-current I3 and the fourth sub-current I4; the current corresponding to the fifth resonance mode is named by the current distribution mode including the fifth The current distribution mode of the sub-current I5 and the sixth sub-current I6 is named as the second distribution mode.

It can be understood that when the distance d1=D between the connection point of the second radiator 121 and the coupling end surface 121a is the switching point between the first distribution mode and the second distribution mode, where 0<d1<L /3. When 0≤d1<D, the current distribution of the fifth resonance mode is the second distribution mode; when D≤d1≤L/2, the current distribution of the fifth resonance mode is the first distribution mode.

The second radiator 121 has a coupling end surface 121a facing the first free end 1112, and the distance d1 between the connection point B of the second radiator 121 and the coupling end surface 121a satisfies: 0≤ d1≦L/2, so that the layout of the connection point B where the second signal source S2 and the second matching circuit M2 are connected to the second radiator 121 is more flexible. When the antenna assembly 10 is applied in the electronic device 1 , it is convenient to be combined and arranged with other devices in the electronic device 1 .

In this embodiment, the third sub-frequency band (N77 frequency band in this embodiment) in the second frequency band (UHB frequency band in this embodiment) is realized by using the position setting of the connection point B on the second radiator 121. ) and the wide frequency band of the fourth sub-frequency band (N78 frequency band in this embodiment). In this embodiment, the frequency range of the N77 frequency band and the N78 frequency band is: 3.3GHz-4.2GHz. In other words, the antenna assembly 10 provided by the embodiment of the present application can support both the N77 frequency band and the N78 frequency band at the same time. In the related art, the active switch 1222 in the antenna assembly 10 is used to switch between the N77 frequency band and the N78 frequency band, but it is impossible to support the N77 frequency band and the N78 frequency band at the same time. In addition, in the related art, it is also impossible to realize the full frequency band of N77, realize a part of the frequency band of the N77 frequency band in one time period, and realize another part of the frequency band of the N77 in another time period. It can be seen that the antenna assembly 10 in the related art cannot support the N77 frequency band and the N78 frequency band at the same time, but the antenna assembly 10 provided by the embodiment of the present application can realize the N77 frequency band and the N78 frequency band at the same time through the position setting of the connection point B, so , with better communication effect. In addition, the antenna assembly 10 provided by the embodiment of the present application does not need to be provided with an active switch 1222. The antenna assembly 10 is small in size and occupies a small space. When the antenna assembly 10 is applied in the electronic device 1, it is convenient to integrate Other device combinations and layouts in device 1. In addition, the antenna assembly 10 provided by the embodiment of the present application can realize the full frequency bands of the N77 frequency band and the N78 frequency band. Therefore, the antenna assembly 10 provided by the embodiment of the present application has better communication effect in the N77 frequency band and the N78 frequency band.

Please also refer to FIG. 21 . FIG. 21 is a schematic diagram of an antenna assembly provided in another embodiment of the present application. In this implementation manner, the first antenna 110 further includes a third radiator 113 . The third radiator 113 is electrically connected to the first matching circuit M1, and the third radiator 113 is used to support the second frequency band or the fourth frequency band, wherein the fourth frequency band is different from the first Any one of the first frequency band, the second frequency band and the third frequency band.

The first antenna 110 also includes a third radiator 113 that can be combined into the antenna assembly 10 provided in any one of the preceding embodiments. In the schematic diagram of this embodiment, the first antenna 110 also includes a third radiator 113 combined The schematic diagram of the antenna assembly 10 provided in the foregoing implementation manner is illustrated, and understandably, it should not be construed as a limitation on the antenna assembly 10 provided in the present application.

The third radiator 113 is a flexible circuit board (Flexible Printed Circuit, FPC) antenna radiator or a laser direct forming (Laser Direct Structuring, LDS) antenna radiator, or a printing direct forming (Print Direct Structuring, PDS) antenna radiator, or a metal branch.

In this embodiment, the third radiator 113 is used to support the second frequency band as an example for illustration. For example, the third radiator 113 is used to support the second frequency band (in this embodiment, N79 band in the UHB band).

It can be understood that, in other implementation manners, the third radiator 113 is used to support the fourth frequency band, wherein the fourth frequency band is different from the first frequency band, the second frequency band and the third frequency band. any frequency band.

In this embodiment, by setting the third radiator 113, the antenna assembly 10 can support more frequency bands, so that the antenna assembly 10 has better communication performance.

The present application also provides an electronic device 1, which includes, but is not limited to, a mobile phone, an Internet device (mobile internet device, MID), an electronic book, a portable playback station (Play Station Portable, PSP) or a personal digital assistant. (Personal Digital Assistant, PDA) and other devices with communication functions. Please refer to FIG. 22 and FIG. 23 together. FIG. 22 is a three-dimensional structural view of an electronic device provided by an embodiment of the present application; FIG. 23 is a cross-sectional view of line I-I in FIG. 22 provided by an embodiment. The electronic device 1 includes the antenna assembly 10 described in any of the foregoing implementation manners.

Please refer to FIG. 22 , FIG. 23 , FIG. 24 and FIG. 25 . FIG. 24 is a top view of the conductive frame in one embodiment of the present application; FIG. 25 is a top view of the conductive frame in another embodiment of the present application. The electronic device 1 further includes a conductive frame 20 . The conductive frame 20 includes a frame body 210 , a first conductive segment 220 , and a second conductive segment 230 . The first conductive segment 220 and the second conductive segment 230 are spaced apart, and there is a gap between the first conductive segment 220 and the second conductive segment 230 and the frame body 210 respectively, and the One end of the first conductive segment 220 away from the second conductive segment 230 is connected to the frame body 210 , and one end of the second conductive segment 230 away from the first conductive segment 220 is connected to the frame body 210 , Wherein, the first radiator 111 includes the first conductive segment 220 , and the second radiator 121 includes the second conductive segment 230 . In FIG. 24, the side of the frame body 210 corresponding to the first conductive segment 220 and the second conductive segment 230 is used as an example to illustrate; in FIG. 25, the first conductive segment 220 and the second conductive segment The corner of the second conductive segment 230 corresponding to the frame body 210 is taken as an example for illustration.

In this embodiment, the conductive frame 20 is a metal frame, for example, the material of the conductive frame 20 may include aluminum-magnesium alloy, or aluminum, or copper. Since larger pieces of metal can form the ground pole, the frame body 210 can form the ground pole, and the end of the first conductive segment 220 away from the second conductive segment 230 is connected to the frame body 210 The end of the second conductive segment 230 away from the second conductive segment 230 is connected to the frame body 210 so that the second conductive segment 230 is grounded.

Please refer to FIG. 23 again, the conductive frame 20 includes a frame 240, the frame 240 is bent and connected to the periphery of the frame body 210, the first conductive segment 220 and the second conductive segment 230 are formed on on the frame 240 .

In this embodiment, the conductive frame body 20 is the middle frame 30 of the electronic device 1 .

The material of the middle frame 30 is metal, such as aluminum-magnesium alloy. The middle frame 30 generally constitutes the ground of the electronic device 1 , and when the electronic devices in the electronic device 1 need to be grounded, the middle frame 30 can be connected to the ground. In addition, the ground system in the electronic device 1 includes the ground in the circuit board 50 and the ground in the screen 40 in addition to the middle frame 30 .

In this embodiment, the electronic device 1 further includes a screen 40 , a circuit board 50 and a battery cover 60 . The screen 40 may be a display screen with display functions, or a screen integrated with display and touch functions. The screen 40 is used to display text, images, videos and other information. The screen 40 is carried on the middle frame 30 and is located at one side of the middle frame 30 . The circuit board 50 is usually carried on the middle frame 30 , and the circuit board 50 and the screen 40 are carried on opposite sides of the middle frame 30 . At least one or more of the first signal source S1 , the second signal source S2 , the first matching circuit M1 and the second matching circuit M2 in the antenna assembly 10 described above may be disposed on the circuit board 50 . The battery cover 60 is arranged on the side of the circuit board 50 away from the middle frame 30, and the battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to form a complete assembly. electronic equipment 1. It can be understood that the description of the structure of the electronic device 1 is only a description of the structure of the electronic device 1 , and should not be construed as a limitation on the electronic device 1 , nor should it be construed as a limitation on the antenna assembly 10 .

In other embodiments, the conductive frame 20 may not be the middle frame 30 , but a conductive frame 20 disposed inside the electronic device 1 .

In other embodiments, the first radiator 111 is an FPC antenna radiator or an LDS antenna radiator, or a PDS antenna radiator, or a metal branch; the second radiator 121 is an FPC antenna radiator or It is an LDS antenna radiator, or a PDS antenna radiator, or a metal branch. The first radiator 111 can be disposed on the edge of the middle frame 30 and electrically connected to the middle frame 30 . It can be understood that, in other implementation manners, the first radiator 111 and the second radiator 121 can also be arranged at other positions, and be electrically connected to the ground system in the electronic device 1 to be grounded. The ground system in the electronic device 1 includes a middle frame 30, a screen 40, and a circuit board 50. The first radiator 111 and the second radiator 121 are electrically connected to the ground system of the electronic device 1, including the The first radiator 111 and the second radiator 121 are electrically connected to any one or more of the ground of the middle frame 30 , the ground of the screen 40 , and the ground of the circuit board 50 .

In one embodiment, the first radiator 111 and the second radiator 121 are antenna radiators of the same type, and are disposed on the same substrate. The first radiator 111 and the second radiator 121 are of the same type and are arranged on the same substrate, thereby facilitating the preparation of the first radiator 111 and the second radiator 121 and the first radiator 111 and the second radiator 121. The radiator 111 and the second radiator 121 are assembled with other components in the electronic device 1 . In this embodiment, the electronic device 1 further includes a ground system, and the ground system includes one or more of the middle frame 30, the ground of the circuit board 50, and the ground of the display screen. The first radiator 111 The first ground terminal 1111 of the second radiator 121 is electrically connected to the ground system for grounding, and the second ground terminal 1211 of the second radiator 121 is electrically connected to the ground system for grounding. In this embodiment, the first radiator 111 is an FPC antenna radiator, or an LDS antenna radiator, or a PDS antenna radiator, or a metal branch; the second radiator 121 is an FPC antenna radiator, Or it is an LDS antenna radiator, or a PDS antenna radiator, or a metal branch. When the first radiator 111 and the second radiator 121 are not directly formed on the middle frame 30, they need to be electrically connected to the electronic Ground system in device 1.

When the first radiator 111 is electrically connected to the ground of the middle frame 30, the first radiator 111 can be connected to the ground of the middle frame 30 through a connecting rib, or the first radiator 111 can be electrically connected to the middle frame through a conductive shrapnel. Box 30 ground. Similarly, when the second radiator 121 is electrically connected to the ground of the middle frame 30, the second radiator 121 can be connected to the ground of the middle frame 30 through a connecting rib, or the second radiator 121 can be connected to the ground of the middle frame 30 through a conductive shrapnel. It is electrically connected to the ground of the middle frame 30 .

Please refer to FIG. 26 . FIG. 26 is a schematic diagram of the positions of the first radiator and the second radiator in the electronic device in an embodiment. In this embodiment, the electronic device 1 includes a top 1a and a bottom 1b, and the first radiator 111 and the second radiator 121 are both disposed on the top 1a.

The so-called top 1a refers to the upper part of the electronic device 1 when it is in use (for example, the electronic device 1 is in a vertical screen state), and the bottom 1b is the lower part of the electronic device 1 opposite to the top 1a.

The arrangement of the first radiator 111 and the second radiator 121 on the top 1a includes three situations: the first radiator 111 and the second radiator 121 are arranged on the upper left of the electronic device 1 angle; or, the first radiator 111 and the second radiator 121 are arranged on the top edge of the electronic device 1; or the first radiator 111 and the second radiator 121 are arranged on the Top right corner of electronic device 1.

When the first radiator 111 and the second radiator 121 are arranged on the upper left corner of the electronic device 1, it includes the following situations: the part of the first radiator 111 is located on the left side, and the second radiator 111 is located on the left side. The other part of a radiator 111 is located on the top edge, and the second radiator 121 is located on the top edge; or, the second radiator 121 is partially located on the top edge, and the other part of the second radiator 121 It is located on the left side, and the first radiator 111 is located on the left side; or, the first radiator 111 is located on the left side, and the second radiator 121 is located on the top side.

When the first radiator 111 and the second radiator 121 are arranged on the upper right corner of the electronic device 1, it includes the following situations: the first radiator 111 is partly located on the top side, and the first The other part of the radiator 111 is located on the right, and the second radiator 121 is located on the right; or, the second radiator 121 is partially located on the right, the second radiator 121 is partially located on the top edge, and the first The radiator 111 is partially located on the top side; or, the first radiator 111 is located on the top side, and the second radiator 121 is located on the right side.

When the electronic device 1 is placed three-dimensionally, the top 1a of the electronic device 1 is usually away from the ground, and the bottom 1b of the electronic device 1 is usually close to the ground. When the first radiator 111 and the second radiator 121 are arranged on the top 1a, the upper hemisphere radiation efficiency of the first antenna 110 and the second antenna 120 is better, so that the first antenna 110 and the The second antenna 120 has better communication efficiency. Of course, in other embodiments, the first radiator 111 and the second radiator 121 can also be arranged corresponding to the bottom 1b of the electronic device 1, although the first radiator 111 and the second radiator When the body 121 is set corresponding to the bottom 1b of the electronic device 1, the upper hemisphere radiation efficiency of the first antenna 110 and the second antenna 120 is not so good, but as long as the upper hemisphere radiation efficiency is greater than or equal to the preset efficiency, they can also have relatively good communication effect.

Please continue to refer to FIG. 26 , the electronic device 1 in this embodiment includes a first side 11 , a second side 12 , a third side 13 , and a fourth side 14 connected end to end. The first side 11 and the third side 13 are short sides of the electronic device 1 , and the second side 12 and the fourth side 14 are long sides of the electronic device 1 . The first side 11 is opposite to the third side 13 and arranged at intervals, the second side 12 is opposite to the fourth side 14 and arranged at intervals, and the second side 12 is respectively connected to the first The side 11 is connected to the third side 13 by bending, and the fourth side 14 is connected to the first side 11 and the third side 13 by bending. The junction of the first side 11 and the second side 12, the junction of the second side 12 and the third side 13, the junction of the third side 13 and the fourth side 14 , The joints between the fourth side 14 and the first side 11 form corners of the electronic device 1 . In this embodiment, the first side 11 is the top side of the electronic device 1, the second side is the right side of the electronic device 1, and the third side is the bottom side of the electronic device 1 , the fourth side is the left side of the electronic device 1 . It can be understood that, in this embodiment, the first side 11 and the third side 13 are the short sides of the electronic device 1, and the second side 12 and the fourth side 14 are the short sides of the electronic device 1. The long side of the device 1 is shown as an example. In other implementation manners, the first side 11 , the second side 12 , the third side 13 , and the fourth side 14 are equal in length.

Please refer to FIG. 1 and FIG. 27 together. FIG. 27 is a schematic diagram of the efficiency of the upper hemisphere of the antenna assembly shown in FIG. 1 . The efficiency of the upper hemisphere in the antenna assembly 10 accounts for more than 50%, and in the schematic diagram of this embodiment, the efficiency of the upper hemisphere in the antenna assembly 10 accounts for 53%. In other words, the upper hemisphere radiation efficiency of the first antenna 110 and the second antenna 120 is better, so that the first antenna 110 and the second antenna 120 have better communication efficiency.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned Changes, modifications, substitutions and modifications are made to the embodiments, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims (20)

1. An antenna assembly, characterized in that the antenna assembly includes:

   a first antenna, the first antenna includes a first radiator, a first matching circuit and a first signal source, the first radiator has a first ground terminal and a first free terminal, the first ground terminal is grounded, The first signal source is electrically connected to the first radiator through the first matching circuit; and

   a second antenna, the second antenna includes a second radiator, a second matching circuit, and a second signal source, the second radiator has a second ground end and a second free end, the second ground end is grounded, The second free end is spaced apart from the first free end and forms a coupling slot, the second radiator is coupled with the first radiator through the coupling slot, and the second signal source is electrically connected to the The second matching circuit is connected to the second radiator, and the second radiator also has a connection point. The second matching circuit includes a frequency selection filter subcircuit and a bandpass subcircuit, and one end of the frequency selection filter subcircuit The connection point is electrically connected, and the other end is grounded. The frequency selection filter sub-circuit is a band-stop circuit of the third frequency band, and is a band-pass circuit of the second frequency band; one end of the band-pass sub-circuit is electrically connected to the connection point, the other end is electrically connected to the second signal source, and the band-pass sub-circuit is a band-pass circuit of the third frequency band;

   The first antenna is used to support the first frequency band and the second frequency band, and the second antenna is used to support the third frequency band.
2. The antenna assembly according to claim 1, wherein the frequency selective filtering sub-circuit comprises:

   a first inductor, one end of the first inductor is electrically connected to the connection point;

   a first capacitor connected in parallel with the first inductor; and

   A second inductor, one end of the second inductor is electrically connected to the node where the first capacitor is connected in parallel with the first inductor, and the other end is grounded.
3. The antenna assembly according to claim 1, wherein the second matching circuit further comprises:

   a switch, the other end of the frequency selective filtering sub-circuit is grounded through the switch;

   When the switch is in the off state, the first antenna supports the first sub-frequency band and the second sub-frequency band in the first frequency band, wherein the frequency of the first sub-frequency band is lower than the frequency of the second sub-frequency band ;

   When the switch is in the closed state, the first antenna supports at least the first sub-frequency band in the first frequency band.
4. The antenna assembly according to claim 1, wherein the bandpass sub-circuit comprises a second capacitor and a third inductor, and the second capacitor is connected in series with the third inductor; or,

   The bandpass sub-circuit includes a second capacitor and a third inductor, and the second capacitor is connected in parallel with the third inductor.
5. The antenna assembly according to claim 1, wherein the second matching circuit further comprises:

   A tuning sub-circuit, where the tuning sub-circuit is used to tune the resonance point of the third frequency band.
6. The antenna assembly according to claim 5, wherein the tuning subcircuit comprises:

   A first tuning unit, one end of the first tuning unit is electrically connected to the second signal source, and the other end is electrically connected to the connection point.
7. The antenna assembly according to claim 6, wherein the tuning subcircuit further comprises at least one of a second tuning unit and a third tuning unit;

   When the tuning subcircuit includes a second tuning unit, one end of the second tuning unit is grounded, and the other end is electrically connected to the other end of the first tuning unit;

   When the tuning sub-circuit includes a third tuning unit, one end of the third tuning unit is grounded, and the other end of the third tuning unit is electrically connected to the second signal source.
8. The antenna assembly according to claim 7, wherein the first tuning unit includes a capacitor; when the tuning sub-circuit includes the second tuning unit, the second tuning unit includes a capacitor or an inductor; when When the tuning subcircuit includes a third tuning unit, the third tuning unit includes a capacitor or an inductor.
9. The antenna assembly according to claim 3, wherein when the switch is in an off state, the first antenna has a first resonant mode, a second resonant mode and a third resonant mode, wherein the first A resonance mode is used to support a first sub-frequency band of the first frequency band, the second resonance mode is used to support a second sub-frequency band of the first frequency band, and the third resonance mode is used to support the second sub-frequency band band.
10. The antenna assembly according to claim 9, wherein when the switch is in a closed state, the first antenna has a first resonant mode, a second resonant mode, a fourth resonant mode and a fifth resonant mode, wherein , both the first resonance mode and the second resonance mode support at least the first sub-frequency band in the first frequency band, and the fourth resonance mode and the fifth resonance mode are both used to support the second band.
11. The antenna assembly according to claim 9 or 10, wherein the flow direction of the current corresponding to the first resonance mode is: from the second ground terminal to the second free terminal, from the second free terminal Flow through the coupling slot to the first free end, and flow from the first free end to the first ground end.
12. The antenna assembly according to claim 9 or 10, wherein the flow direction of the current corresponding to the second resonance mode is:

    From the first signal source to the connection point between the first radiator and the first matching circuit, and flow to the first free end, from the first free end to the second free end through the coupling gap end, and flow from the second free end to the second ground end.
13. The antenna assembly according to claim 9, wherein the current corresponding to the third resonance mode comprises:

    a first sub-current, the first sub-current flows from the first ground terminal to the first free terminal; and

    A second sub-current, the second sub-current flows from the second ground terminal to the second free terminal.
14. The antenna assembly according to claim 10, wherein the flow direction of the current corresponding to the fourth resonant mode is:

    Flow from the first signal source to the first free end through the first matching circuit, the connection point between the first matching circuit and the first radiator, and through the first free end through the coupling The slit flows to the second free end, and flows from the second free end to the connection point of the second radiator, the second matching circuit to the ground electrode.
15. The antenna assembly according to claim 10, wherein the distance d1 between the connection point of the second radiator and the second free end satisfies: 0≤d1≤L/2, where L is the length of the second radiator.
16. The antenna assembly according to claim 15, wherein when the distance between the connection point of the second radiator and the coupling end face is d1=L/2, the current corresponding to the fifth resonance mode includes :

    a third sub-current, the third sub-current flows from the first signal source to the first free end via the first matching circuit, the connection between the first matching circuit and the first radiator; and

    A fourth sub-current, the fourth sub-current passes through the second matching circuit, the connection point between the second matching circuit and the second radiator to the second free end.
17. The antenna assembly according to claim 15, wherein when the distance between the connection point of the second radiator and the coupling end face is d1=0, the current corresponding to the fifth resonance mode includes:

    a fifth sub-current, the fifth sub-current flows from the second matching circuit to the connection point of the second radiator, and flows from the connection point of the second radiator toward the second ground terminal; as well as

    A sixth sub-current, where the sixth sub-current flows from the second ground terminal toward the first free terminal.
18. The antenna assembly according to claim 1, wherein the first antenna further comprises:

    A third radiator, the third radiator is electrically connected to the first matching circuit, and the third radiator is used to support the second frequency band or the fourth frequency band, wherein the fourth frequency band is different from the any one of the first frequency band, the second frequency band and the third frequency band.
19. The antenna assembly according to claim 1, wherein the first frequency band is an MHB frequency band, the second frequency band is a UHB frequency band, and the third frequency band is a GPS-L5 frequency band.
20. An electronic device, characterized in that the electronic device comprises the antenna assembly according to any one of claims 1-19, the electronic device has a top and a bottom, the first radiator and the second radiator The bodies are all arranged on the top.

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