CN218648131U

CN218648131U - Multi-antenna integrated structure and electronic equipment

Info

Publication number: CN218648131U
Application number: CN202222459569.7U
Authority: CN
Inventors: 张玉虎
Original assignee: Hubei Xingji Shidai Technology Co Ltd
Current assignee: Hubei Xingji Meizu Technology Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-03-17
Anticipated expiration: 2032-09-16

Abstract

The application relates to the technical field of antennas, and discloses a multi-antenna integrated structure and electronic equipment, wherein the multi-antenna integrated structure includes: the radiator, be equipped with the feed point on the radiator, the feed point passes through the circuit unit and is connected respectively with first antenna element and second antenna element, so that the radiator supports first antenna frequency channel and second antenna frequency channel, the circuit unit is including parallelly connected first circuit and the second circuit that sets up, be equipped with first matching circuit and the first switch that corresponds with first antenna element on the first circuit, be equipped with second matching circuit and the second switch that corresponds with the second antenna element on the second circuit, first switch and second switch alternative closure. The application provides a pair of many antennas integrated structure and electronic equipment, with the integrated setting of first antenna element and second antenna element be favorable to reducing the quantity that sets up of irradiator, and then reduce antenna installation space, be favorable to improving the problem that antenna layout is difficult, efficiency is lower among the current product.

Description

Multi-antenna integrated structure and electronic equipment

Technical Field

The application relates to the technical field of antennas, in particular to a multi-antenna integrated structure and electronic equipment.

Background

At present, with the popularization of a full-face screen, a curved-face screen and the like, the clearance reserved for an antenna is less and less, the number of built-in antennas of electronic products is rapidly increased with the development of the era of 5G and the Internet of things, and due to the increase of frequency bands of 5G and the like, the number of the antennas is more than 4G, so that the antenna layout is difficult, and the efficiency is reduced. The space layout of the antenna related to the existing electronic product is more and more tense, and the problems that the antenna is difficult to be laid out and the efficiency is low exist.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a many antennas integrated structure, includes: the radiator, be equipped with the feed point on the radiator, the feed point passes through circuit unit and is connected respectively with first antenna element and second antenna element, so that the radiator supports first antenna frequency channel and second antenna frequency channel, circuit unit is including parallelly connected first circuit and the second circuit that sets up, be equipped with on the first circuit with first matching circuit and the first switch that first antenna element corresponds, be equipped with on the second circuit with second matching circuit and the second switch that the second antenna element corresponds, first switch with the second switch alternative is closed.

In some embodiments, the multi-antenna integrated structure further includes a combiner, and the first circuit and the second circuit are connected in parallel between the feeding point and the combiner, and the combiner is connected to the first antenna element and the second antenna element, respectively.

In some embodiments, the first matching circuit is provided as a first antenna switch for implementing impedance matching of the first antenna band; the second matching circuit is set as a second antenna switch, and the second antenna switch is used for realizing impedance matching of the second antenna frequency band.

In some embodiments, a third switch is further disposed on the first circuit, and the first switch and the third switch are located on two sides of the first matching circuit; and a fourth switch is further arranged on the second circuit, and the second switch and the fourth switch are positioned on two sides of the second matching circuit.

In some embodiments, the first antenna element comprises a low orbit satellite antenna element and the second antenna element comprises a first low frequency antenna element.

In some embodiments, the radiator is further provided with a grounding point, the grounding point is grounded through a grounding switch, the grounding switch includes a first port and a second port, the first port is provided with an inductor, the first port is configured to be closed when the first switch is closed, and the second port is configured to be closed when the second switch is closed.

In some embodiments, the multi-antenna integrated structure includes a metal frame divided into a plurality of frames along a circumferential direction, and the frames include a first frame provided as the radiator.

In some embodiments, the frame further comprises at least one second frame provided as a second low frequency antenna unit;

and/or the frame body further comprises at least one third frame body, and the third frame body is set as an intermediate frequency antenna unit or a high frequency antenna unit.

In some embodiments, a gap is arranged between two adjacent frame bodies.

The application also provides an electronic device comprising the multi-antenna integrated structure.

Drawings

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

Fig. 1 is a schematic diagram illustrating an arrangement of a multi-antenna integrated structure according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a circuit unit provided by an embodiment of the present application;

fig. 3 is a schematic diagram of a grounding switch provided in an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating simulated performance of a satellite antenna unit according to an embodiment of the present application;

fig. 5 is a schematic diagram of simulated performance of the first antenna unit according to the embodiment of the present application.

Reference numerals are as follows:

1: a metal frame; 11: a first frame body; 12: a second frame body; 13: a third frame body; 2: a feed point; 3: a circuit unit; 31: a first circuit; 32: a second circuit; 33: a first switch; 34: a second switch; 35: a third switch; 36: a fourth switch; 37: a first antenna switch; 38: a second antenna switch; 3A: a first antenna circuit; 3B: a second antenna circuit; 3C: a first switch assembly; 3D: a second switch assembly; 4: a ground point; 5: a grounding switch; 51: a first port; 52: a second port; 53: an inductance; 6: a gap; 7: a main board; 8: an interface; 9: a combiner.

Detailed Description

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The multi-antenna integrated structure and the electronic device of the present application are described below with reference to fig. 1 to 5.

Referring to fig. 1 and 2, an embodiment of the present application provides a multi-antenna integrated structure, including: the antenna comprises a radiating body, wherein a feed point 2 is arranged on the radiating body, and the feed point 2 is respectively connected with a first antenna unit and a second antenna unit through a circuit unit 3, so that the radiating body supports a first antenna frequency band and a second antenna frequency band. That is, in this embodiment, the first antenna unit and the second antenna unit are arranged in a radiating body, and the first antenna unit and the second antenna unit form a port through the circuit unit 3, and the port is connected to the feeding point 2 on the radiating body, so that the radiating body can operate both the first antenna frequency band and the second antenna frequency band.

Specifically, the circuit unit 3 includes a first circuit 31 and a second circuit 32 that are arranged in parallel, a first matching circuit and a first switch 33 that correspond to the first antenna unit are arranged on the first circuit 31, a second matching circuit and a second switch 34 that correspond to the second antenna unit are arranged on the second circuit 32, and one of the first switch 33 and the second switch 34 is selected to be closed; so that the radiator operates the first antenna band or the second antenna band. The first matching circuit corresponds to the first antenna unit and is used for realizing the blocking matching of the first antenna unit; the second matching circuit corresponds to the second antenna unit and is used for realizing impedance matching of the second antenna unit.

In this embodiment, the first circuit 31 and the second circuit 32 are arranged in parallel, and the first matching circuit and the second matching circuit are separately arranged, so that the connection between the antenna unit and the radiator through the first matching circuit can be realized by the conduction of the first circuit 31, and the operation of the first antenna unit can be realized, that is, the radiator operates in the first antenna frequency band; the connection of the antenna unit to the radiator via the second matching circuit can be realized by the conduction of the second circuit 32, and the operation of the second antenna unit, i.e. the operation of the radiator in the second antenna frequency band, can be realized. Therefore, the switching of the radiator between the first antenna frequency band and the second antenna frequency band can be realized by alternatively closing the first switch 33 and the second switch 34.

Referring to fig. 2, when the first antenna frequency band needs to be operated, the first switch 33 may be closed, and the second switch 34 may be opened, so that the first antenna circuit 3A is turned on, and the second antenna circuit 3B is turned off, so that the radiator realizes the operation of the first antenna frequency band; when the second antenna frequency band needs to be operated, the second switch 34 may be closed, and the first switch 33 may be opened, so that the first antenna circuit 3A is turned off, and the second antenna circuit 3B is turned on, so that the radiator realizes the operation of the second antenna frequency band.

The multi-antenna integrated structure provided by the embodiment of the application, the first antenna unit and the second antenna unit share the radiator, the circuit unit 3 is arranged to support the first antenna frequency band and the second antenna frequency band by the radiator, the first circuit 31 and the second circuit 32 are arranged, the first switch 33 and the second switch 34 can be selected to be closed, switching of the radiator between the first antenna frequency band and the second antenna frequency band is achieved, the structure for integrally setting the first antenna unit and the second antenna unit is beneficial to reducing the number of the radiators, the antenna installation space is further reduced, the antenna layout is improved, and the antenna efficiency is improved.

In some embodiments, referring to fig. 2, the multi-antenna integrated structure further includes a combiner 9, the first circuit 31 and the second circuit 32 are connected in parallel between the feeding point 2 and the combiner 9, and the combiner 9 is connected to the first antenna element and the second antenna element, respectively.

For example, the first antenna unit may be a radio frequency end of a first antenna frequency band, the second antenna unit may be a radio frequency end of a second antenna frequency band, the radio frequency ends of the first antenna frequency band and the second antenna frequency band are respectively connected to the combiner 9, the combiner 9 combines feed signals provided by the radio frequency end of the first antenna frequency band and the radio frequency end of the second antenna frequency band and provides the feed signals to the radiator, so that the radiator can support the first antenna frequency band and the second antenna frequency band.

For example, the first antenna unit and the second antenna unit are radio frequency front end structures of antennas, and are used as feed sources of antenna frequency bands, and specific setting structures are not limited.

In some embodiments, referring to fig. 2, the first matching circuit is provided as a first antenna switch 37, the first antenna switch 37 is used for implementing impedance matching of the first antenna frequency band; the second matching circuit is a second antenna switch 38, and the second antenna switch 38 is configured to implement impedance matching of the second antenna frequency band.

That is, the first matching circuit in the present embodiment may be configured as a first antenna switch 37, and the first antenna switch 37 includes a plurality of ports, each of which is provided with a capacitive and/or inductive element. The first antenna switch 37 has one end connected to the first circuit 31 and the other end grounded. When the first antenna switch 37 is in operation, one or more ports can be selected to be closed to work, or all ports can be closed to work; the required circuit structure can be formed according to actual needs to realize the impedance matching of the first antenna unit.

The second matching circuit may be configured as a second antenna switch 38, the second antenna switch 38 comprising a plurality of ports, each port being provided with a capacitive and/or inductive element. One end of the second antenna switch 38 is connected to the second circuit 32, and the other end is grounded. When the second antenna switch 38 operates, one or more ports may be selected to be closed to operate, or all ports may be closed to operate; the required circuit structure can be formed according to actual needs to realize the impedance matching of the second antenna unit.

The specific arrangement structure of the first antenna switch 37 and the second antenna switch 38 can be flexibly selected according to actual needs, and is not limited specifically.

In some embodiments, referring to fig. 2, a third switch 35 is further disposed on the first circuit 31, and the first switch 33 and the third switch 35 are located on two sides of the first matching circuit; a fourth switch 36 is further disposed on the second circuit 32, and the second switch 34 and the fourth switch 36 are located on two sides of the second matching circuit. The first switch 33 and the third switch 35 are closed or opened simultaneously, and the second switch 34 and the fourth switch 36 are closed or opened simultaneously.

That is, when the first antenna circuit 3A is required to operate, the first switch 33 and the third switch 35 may be closed, and the second switch 34 and the fourth switch 36 may be opened, so that the second circuit 32 is opened at both ends of the second matching circuit, and interference of the second matching circuit with the first antenna circuit 3A may be avoided. Correspondingly, when the second antenna circuit 3B is required to operate, the first switch 33 and the third switch 35 may be opened, and the second switch 34 and the fourth switch 36 may be closed, so that the first circuit 31 is opened at both ends of the first matching circuit, and interference of the first matching circuit with the second antenna circuit 3B may be avoided.

Further, the first switch 33 and the third switch 35 may form a first switch assembly 3C, and the first switch assembly 3C may be composed of two single pole single throw switches, i.e., the first switch assembly 3C is a 2 × SPST switch structure. The third switch 35 and the fourth switch 36 may form a second switching assembly 3D, which second switching assembly 3D may likewise consist of two single pole, single throw switches, i.e. the second switching assembly 3D is a 2 x SPST switch structure.

In some embodiments, the first antenna element comprises a satellite antenna element and the second antenna element comprises a first low frequency antenna element. That is, in this embodiment, the common radiator of the satellite antenna unit and the first low-frequency antenna unit is arranged, and the radiator can realize the operation of selecting the satellite antenna frequency band and the first low-frequency antenna frequency band.

For example, the satellite antenna unit may be a low orbit satellite antenna unit and the first low frequency antenna unit may be a first low frequency cellular antenna unit.

In the embodiment, the low-orbit satellite antenna needs to occupy a large part of the antenna layout space, and the low-orbit satellite frequency band is added into an electronic product to cause a severe antenna space layout problem, so that the low-orbit satellite antenna and the first low-frequency antenna common radiator are arranged, the low-orbit satellite antenna can be conveniently arranged and installed, the antenna installation occupation space is reduced, and the antenna layout is convenient.

In some embodiments, referring to fig. 1 and 3, a grounding point 4 is further disposed on the radiator, the grounding point 4 is grounded through a grounding switch 5, the grounding switch 5 includes a first port 51 and a second port 52, the first port 51 is provided with an inductor 53, the first port 51 is configured to be closed when the first switch 33 is closed, and the second port 52 is configured to be closed when the second switch 34 is closed.

In this embodiment, a grounding structure of a radiator is provided based on a setting structure of a common radiator of a satellite antenna unit and a first low-frequency antenna unit, and is used for realizing a satellite antenna frequency band or a first low-frequency antenna frequency band by the radiator. Specifically, referring to fig. 3, one end of the grounding switch 5 is connected to the grounding point 4, and the other end is grounded; the earthing switch 5 comprises two ports, a first port 51 provided with an inductance and a second port 52 without components. The first port 51 is configured to be closed when the first antenna circuit 3A is in operation, i.e., when the satellite antenna operates in a frequency band, so as to be grounded via the inductor 53, for implementing the operation in the frequency band of the satellite antenna. The second port 52 is adapted to be closed when the second antenna circuit 3B is operating, i.e. when the first low frequency band is operating, so as to be directly connected to ground for enabling operation of the first low frequency band.

In some embodiments, the multi-antenna integrated structure includes a metal frame 1, the metal frame 1 is divided into a plurality of frames along a circumferential direction, the frames include a first frame 11, and the first frame 11 is provided as the radiator. Referring to fig. 1, the radiator is a frame structure in this embodiment, which is beneficial to reducing the occupied space of the antenna and reducing the cost.

In other embodiments, the form of the antenna radiator may be a metal frame form, or may also be a laser forming laser form (LDS), a flexible printed circuit board Form (FPC), or a PDS, and the like, which is not limited specifically.

In some embodiments, referring to fig. 1, the frame further comprises at least one second frame 12, the second frame 12 being provided as a second low frequency antenna unit; namely, a second low-frequency antenna unit can be arranged on the metal frame 1 for supporting a second low-frequency antenna frequency band. The second frame body 12 is a section of the metal frame 1, and one second frame body 12 may be provided to form one second low-frequency antenna unit, or a plurality of second frame bodies 12 may be provided to form a plurality of second low-frequency antenna units; the method can be flexibly selected according to the actual situation, and is not limited specifically.

For example, referring to fig. 1, three second frames 12 are provided, that is, the metal frame 1 is provided with three second low-frequency antenna units in addition to the satellite antenna unit and the first low-frequency antenna unit. The second low frequency antenna element may be a second low frequency cellular antenna element.

In some embodiments, referring to fig. 1, the frame further includes at least one third frame 13, and the third frame 13 is provided as an intermediate frequency antenna unit or a high frequency antenna unit. Namely, the metal frame 1 may be further provided with an intermediate frequency antenna unit and/or a high frequency antenna unit for supporting the frequency band of the intermediate and high frequency antenna. The third frame body 13 is a section of the metal frame 1, and one third frame body 13 can be arranged to form one intermediate frequency antenna unit or high frequency antenna unit, or a plurality of third frame bodies 13 can be arranged to form a plurality of intermediate frequency and high frequency antenna units; the method can be flexibly selected according to the actual situation, and is not limited specifically.

For example, referring to fig. 1, two third frame bodies 13 are provided, that is, the metal frame 1 additionally provides two medium and high frequency antenna units on the basis of the satellite antenna unit, the first low frequency antenna unit, and the second low frequency antenna unit.

In other embodiments, the specific number of the second low-frequency antenna unit, the intermediate-frequency antenna unit, and the high-frequency antenna unit may also be other, and is not limited specifically.

In some embodiments, a gap 6 is provided between two adjacent frame bodies. The isolation between the antennas is improved, and the antenna efficiency is guaranteed.

In some embodiments, the metal frame 1 has a rectangular structure, and the first frame body 11 is located in a width direction of the metal frame 1. The arrangement of each framework can be convenient for, the arrangement of a plurality of frequency channel antennas is convenient for. The length of the first frame body 11 is more than 50mm; to ensure antenna performance. The length of the first frame body 11 is less than two thirds of the width of the metal frame 1; to ensure the performance of the antenna in other frequency bands. Namely, when the antenna structure is used for a mobile phone or a flat plate, the position of the antenna radiator is located at the top of the mobile phone or the flat plate, the length of the antenna radiator is larger than 50mm, and in order to not influence other honeycomb type antennas, the radiator occupies less than 2/3 of the top size of the whole single product.

Embodiments of the present application further provide an electronic device, which includes the multi-antenna integrated structure described in any of the above embodiments.

For example, the electronic device may be a cell phone, a tablet, a laptop, a PDA, an AR, a VR, etc.

For example, in one embodiment of the present application, an antenna system for use on a cellular telephone is provided to meet the placement requirements of low earth orbit satellite antennas and cellular antennas. Referring to fig. 1, the antenna system includes a low-earth satellite antenna and a low-frequency cellular antenna, i.e., a first low-frequency antenna radiator, a common feeding point 2 for the low-earth satellite antenna and the low-frequency cellular antenna, and a grounding point 4; and an antenna feed circuit unit 3, the antenna feed circuit unit 3 including: the first switching element 3C is 2 × SPST; the second switching component 3D is 2 × SPST; the first antenna switch 37 is SP4T, and the second antenna switch 38 is SP4T; and the ground grounding switch 5 is SPDT; a main board 7; and three second low frequency antenna elements, which are conventional three low frequency cellular antennas. The circuit unit 3 may be provided on the main board.

For example, the feed points of the low-orbit satellite antenna and the low-frequency cellular antenna are electrically connected with the radiator through a spring plate or other electrical connection methods, such as a lateral spring method or a positive pressure method; as shown with reference to fig. 1.

When the low-orbit satellite antenna works, the satellite signal and the low-frequency cellular signal are separated through the circuit design of the switch unit used on the feed network, so that the aim of mutual non-influence is fulfilled. The working state of the switch unit is as follows: the first switch 33 is on, the second switch 34 is off; the third switch 35 is on, and the fourth switch 36 is off; the earthing switch 5 is connected in series with the first port 51 to earth, and is switched to a large inductance to earth state when the satellite is in operation. Meanwhile, the satellite antenna is connected with the first antenna switch 37 on the feed path in parallel for impedance tuning to meet the required working bandwidth requirement, and the terminal controls the on-off of the inside of the first antenna switch 37 to realize the state that different inductance values come to the ground to carry out impedance tuning so as to realize the corresponding frequency requirements of receiving and transmitting the low-orbit satellite antenna; as shown with reference to the portion of the first antenna circuit 3A that is the low-orbit satellite path shown in fig. 2. The positions of the low-earth-orbit satellite antenna feed point 2, the first switch component 3C, the second switch component 3D, the first antenna switch 37 and the grounding switch 5 are separated and not fixed, and the low-earth-orbit satellite antenna feed point is flexibly placed according to the terminal modeling.

When the low-frequency cellular antenna works, the satellite signal and the low-frequency cellular signal are separated through the circuit design of the switch unit used on the feed network, so that the purpose of mutual non-influence is achieved. The working state of the switch unit is as follows: the second switch 34 is on, the first switch 33 is off; the fourth switch 36 is on, and the third switch 35 is off; the second port 52 of the grounding switch 5 is connected in series to ground and switches to a 0 ohm to ground state when the low frequency cellular antenna is operating. Meanwhile, the low-frequency cellular antenna is connected in parallel on the feed path and matched with the second antenna switch 38 for impedance tuning to meet the required working bandwidth requirement, and the terminal realizes impedance tuning by controlling the on-off state inside the second antenna switch 38 to realize the state that different inductance values come to the ground so as to realize the frequency requirement corresponding to the low-frequency cellular antenna. As shown in the portion of the low frequency cellular path referred to in figure 2, the second antenna circuit 3B. The positions of the low-frequency cellular antenna feed point 2, the first switch component 3C, the second switch component 3D, the second antenna switch 37 and the grounding switch 5 are separated and not fixed, and flexible placement is performed according to the terminal modeling.

The antenna grounding point 4 is electrically connected with the radiator through an elastic sheet or other electrical connection modes such as a side spring mode or a positive pressure mode, the grounding switch 5 is an SPDT switch connected to the ground in series, and meanwhile, the terminal controls the internal on-off switching of the grounding switch 5 to the ground through recognizing that different signals of a satellite antenna or a low-frequency cellular antenna are currently used; when the low-orbit satellite works, the low-orbit satellite is switched to a large-inductance ground state to meet the optimal performance of the satellite antenna; when the low frequency cellular is operating, it is switched to a 0 ohm to ground state to meet the best performance of the low frequency cellular antenna. The positions of the antenna grounding point 4 and the grounding switch 5 are not fixed, and the antenna is flexibly placed according to the terminal shape.

In some embodiments, referring to fig. 1, three second frame bodies 12 are further disposed on the metal frame 1 for supporting three second low-frequency antenna frequency bands. The metal frame 1 can be further provided with an interface 8, and the interface 8 can be a USB data connector. Referring to fig. 4, a simulation performance diagram of a low-earth orbit satellite antenna is shown, and fig. 5 is a simulation performance diagram of a cellular low-frequency antenna, i.e. a first low-frequency antenna; in fig. 4, A1-A8 are coordinate values of antenna efficiency and return loss of the low-orbit satellite antenna, and in fig. 5, B1-B3 are coordinate values of antenna efficiency and return loss of the cellular low-frequency antenna. As can be seen from fig. 4 and 5, the multiple antenna integrated arrangement structure can achieve better antenna performance.

In the embodiment, the antenna system with the coexisting low-orbit satellite antenna and the low-frequency cellular antenna is realized by utilizing a mode of a common radiator of the low-orbit satellite antenna and the low-frequency cellular antenna through the upper frame of the common feed point and matching with different on-off combination states of the switches in the switch circuit unit 3; the layout of a low-orbit satellite antenna and a plurality of low-frequency cellular antennas can be realized, and the lane-level accurate navigation experience of a mobile phone end is realized by using the low-orbit satellite; the antenna performance of LB + LB at endec can be improved.

As described in the foregoing embodiments, concepts of a low orbit satellite antenna, a low frequency cellular antenna, an intermediate frequency cellular antenna, a high frequency cellular antenna, and the like are described, and technical meanings covered by these concepts are generally recognized by those skilled in the art. For example, the low earth orbit satellite antenna operating frequencies may include 230-285MHz; the operating frequency of the low frequency cellular antenna may include 700MHz-2.1GHz, the operating frequency of the intermediate frequency cellular antenna may include 2.5GHz-3.5GHz, and the operating frequency of the high frequency cellular antenna may include a millimeter wave band. The illustration is merely exemplary and is not intended to limit the embodiments of the present application.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A multiple antenna integrated structure, comprising: the radiator, be equipped with the feed point on the radiator, the feed point passes through circuit unit and is connected respectively with first antenna element and second antenna element, so that the radiator supports first antenna frequency channel and second antenna frequency channel, circuit unit is including parallelly connected first circuit and the second circuit that sets up, be equipped with on the first circuit with first matching circuit and the first switch that first antenna element corresponds, be equipped with on the second circuit with second matching circuit and the second switch that the second antenna element corresponds, first switch with the second switch alternative is closed.

2. The multi-antenna integrated structure of claim 1, further comprising a combiner, the first and second circuits being connected in parallel between the feed point and the combiner, the combiner being connected to the first and second antenna elements, respectively.

3. The multi-antenna integrated structure according to claim 1, wherein the first matching circuit is provided as a first antenna switch, and the first antenna switch is configured to implement impedance matching of the first antenna frequency band; the second matching circuit is set as a second antenna switch, and the second antenna switch is used for realizing impedance matching of the second antenna frequency band.

4. The multi-antenna integrated structure of claim 1, wherein a third switch is further disposed on the first circuit, and the first switch and the third switch are located on two sides of the first matching circuit; and a fourth switch is further arranged on the second circuit, and the second switch and the fourth switch are positioned on two sides of the second matching circuit.

5. The multi-antenna integrated structure of any one of claims 1-4, wherein the first antenna element comprises a satellite antenna element and the second antenna element comprises a first low frequency antenna element.

6. The multiple antenna integrated structure of claim 5, wherein the radiator further has a grounding point, the grounding point is grounded through a grounding switch, the grounding switch includes a first port and a second port, the first port has an inductance, the first port is configured to close when the first switch is closed, and the second port is configured to close when the second switch is closed.

7. The multiple antenna integrated structure according to any one of claims 1 to 4, comprising a metal frame divided into a plurality of frame bodies along a circumferential direction, the frame bodies including a first frame body provided as the radiator.

8. The multiple antenna integrated structure according to claim 7, wherein the frame body further comprises at least one second frame body, and the second frame body is provided as a second low-frequency antenna unit;

9. The multi-antenna integrated structure of claim 7, wherein a gap is formed between two adjacent frame bodies.

10. An electronic device, characterized in that it comprises a multi-antenna integrated structure according to any of the preceding claims 1-9.