WO2020192664A1

WO2020192664A1 - Radio frequency switch and antenna

Info

Publication number: WO2020192664A1
Application number: PCT/CN2020/080956
Authority: WO
Inventors: 向良洪; 廖志强; 肖伟宏; 段方清
Original assignee: 华为技术有限公司
Priority date: 2019-03-25
Filing date: 2020-03-24
Publication date: 2020-10-01
Also published as: CN111740187A; CN111740187B

Abstract

Provided in the present application is a radio frequency switch, comprising a cavity, a first fixed band line, and a first moving band line. The first fixed band line is disposed within the cavity and is parallel to a first cavity wall of the cavity. The first moving band line is disposed within the cavity and is movable in a direction perpendicular to the first cavity wall between the plane on which the first cavity wall is located and the plane on which the first fixed band line is located. Projections of the first fixed band line and the first moving band line on the plane on which the first cavity wall is located partially overlap. By using the described radio frequency switch and by means of the movement of the moving band line in the direction perpendicular to the first cavity wall within the cavity, connection to and disconnection from the first fixed band line may be achieved, thereby achieving the function of the radio frequency switch. The described cavity-type radio frequency switch has a high power capacity, while the moving band line only moves inside of the cavity and does not occupy additional volume.

Description

Radio frequency switch and antenna

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on March 25, 2019, with the application number 201910228840.6 and the application name "a kind of radio frequency switch and antenna", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of mobile communication technology, and in particular to a radio frequency switch and antenna.

Background technique

In the communication system, the base station antenna needs to form different beams to adapt to different communication scenarios, that is, the base station antenna can support the switching of different scenarios. The radio frequency switch is one of the key components to realize the beam switching, which can be realized by different states of the radio frequency switch. Beam switching, but with the rapid development of mobile communication technology and the expansion of communication frequency bands to high frequencies, there is an urgent need to provide a miniaturized radio frequency switch with a large power capacity.

Summary of the invention

This application provides a radio frequency switch and an antenna, in order to provide a miniaturized radio frequency switch with large power capacity.

In a first aspect, the present application provides a radio frequency switch including a cavity, a first fixed strap line and a first moving strap line. The first fixing strap line is arranged in the cavity and parallel to the first cavity wall of the cavity. The first moving belt line is arranged in the cavity and is movable in a direction perpendicular to the first cavity wall between the plane where the first cavity wall is located and the plane where the first fixed belt line is located. The projection of the first fixed belt line and the first moving belt line on the plane where the wall of the first cavity is partially overlapped.

It can be seen that by using this radio frequency switch, by moving the moving strip line in the cavity in the direction perpendicular to the wall of the first cavity, the connection and disconnection with the first fixed strip line can be realized, thereby realizing the radio frequency switch function. The body type radio frequency switch not only has a large power capacity, but also the moving belt line only moves inside the cavity without occupying additional volume.

In one embodiment, the first moving belt line of the above-mentioned radio frequency switch moves to contact with the first fixed belt line to achieve a conductive state. Optionally, the first moving belt line is moved to be connected to two different fixed belt lines. Contact to connect two different fixed strip lines to realize the conduction state of the radio frequency switch. Therefore, the radio frequency switch provided by the present application not only includes the cavity, the first fixed belt line and the first moving belt line, but also includes the second fixed belt line. The first fixing strap line is arranged in the cavity and parallel to the first cavity wall of the cavity. The first moving belt line is arranged in the cavity and is movable in a direction perpendicular to the first cavity wall between the plane where the first cavity wall is located and the plane where the first fixed belt line is located. The projection of the first fixed belt line and the first moving belt line on the plane where the wall of the first cavity is partially overlapped. The second fixing strap line is arranged in the cavity and parallel to the wall of the first cavity. The projections of the second fixing strap line and the first fixing strap line on the plane where the first cavity wall is located do not overlap. The projection of the second fixed belt line and the first moving belt line on the plane where the wall of the first cavity is partially overlapped.

Wherein, optionally, the first fixing strap line and the second fixing strap line may be integrally formed. For example, they may be on the same printed circuit board (PCB).

It can be seen that when the first moving belt line moves to contact with the first fixed belt line and the second fixed single line, that is, the first moving belt line connects the first fixed belt line and the second fixed belt line to realize the first An electrical connection between a fixed strap line and a fixed strap line, that is, the radio frequency switch is in a conducting state. When the first moving belt line moves to contact with the inner wall of the first cavity wall, that is, the first moving belt line is electrically connected to the first cavity wall, that is, the radio frequency switch is in the off state, in other words, the first moving Ground with wire. Optionally, as long as the first moving belt is not in contact with the first fixed belt line and the second fixed belt line at the same time, it can be in the off state of the radio frequency switch.

Optionally, the radio frequency switch provided in this application may also include multiple fixed strap lines, and this application does not limit the number of fixed strap lines.

In another embodiment, the radio frequency switch provided in the present application may include multiple moving belt lines. For example, when the radio frequency switch includes two moving belt lines, that is, in addition to including the first moving belt line, When the second moving belt line is also included, the second moving belt line is arranged in the cavity and can be arranged in a direction perpendicular to the first cavity wall between the plane where the second cavity wall is located and the plane where the first fixing belt line is located. Moving, wherein the second cavity wall is a cavity wall parallel to the first cavity wall on the cavity.

The second moving belt line partially overlaps the projection of the first fixed belt line on the plane where the wall of the first cavity is located. And/or, the projection of the second moving belt line and the second fixed belt line on the plane where the wall of the first cavity is partially overlapped.

It can be seen that as the number of moving strip lines increases, and/or the number of fixed strip lines increases, the switching state of the radio frequency switch also increases, and more switching states can be realized.

In another embodiment, any of the above radio frequency switches may further include a driving module, and the driving module includes a driving part and a connecting part connected to each other. The driving part is arranged on the outer surface of the first cavity wall, the connecting part penetrates through the via hole on the first cavity wall and is connected to the first moving belt line, and the connecting part drives the first movement under the driving of the driving part Move with line. Alternatively, the driving part is arranged on the outer surface of the second cavity wall, the connecting part penetrates the via hole on the second cavity wall to connect to the first moving belt line, and the connecting part drives the first moving belt line under the driving of the driving part mobile.

It can be seen that through the driving action of the driving module, the radio frequency switch can realize switching of different states.

Optionally, the above-mentioned connecting portion can be connected to multiple moving belt lines at the same time, for example, two moving belt lines are connected at the same time, and the connecting portion penetrates through a via hole on the first cavity wall (or on the second cavity wall). The via hole) is connected to the first moving belt line, and/or the connecting part penetrates the via hole on the first cavity wall (or the via hole on the second cavity wall) is connected to the second moving belt wire, and The connecting part drives the first moving belt line and/or the second moving belt line to move under the driving of the driving part.

In the second aspect, the present application also provides an antenna, including the first aspect and any possible implementation manner of the first aspect.

In the third aspect, this application also provides a network device, including the first aspect, any one possible implementation manner of the first aspect, and/or any one possible implementation manner of the second aspect and the second aspect The network equipment also includes multiple transceivers TRX, which are respectively connected to a radio port of the base station equipment. For example, the TRX may be a remote radio remote unit.

In a fourth aspect, the present application also provides a communication system, including the first aspect, any one possible implementation manner of the first aspect, and/or any one possible implementation manner of the second aspect and the second aspect Antenna, and/or the third aspect and the network device of any possible implementation manner of the third aspect.

Description of the drawings

FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application;

2 is a schematic structural diagram of a radio frequency switch 200 provided by an embodiment of the application;

FIG. 3 is a schematic structural diagram of a radio frequency switch 300 according to an embodiment of the application;

FIG. 4(a) is a side view of a schematic structural diagram of a radio frequency switch 400 in a first conductive state according to an embodiment of this application;

FIG. 4(b) is a top view of a schematic structural diagram of a radio frequency switch 400 in a first conductive state according to an embodiment of this application;

FIG. 4(c) is a side view of a schematic structural diagram of a radio frequency switch 400 in a second conductive state according to an embodiment of the application;

Fig. 4(d) is a bottom view of a schematic structural diagram of a radio frequency switch 400 in a second conducting state according to an embodiment of this application;

FIG. 5(a) is a side view of a schematic structural diagram of a radio frequency switch 500 in a first conducting state according to an embodiment of this application;

FIG. 5(b) is a top view of a schematic structural diagram of a radio frequency switch 500 in a first conductive state according to an embodiment of the application;

FIG. 5(c) is a side view of a schematic structural diagram of a radio frequency switch 500 in a second conductive state according to an embodiment of the application;

FIG. 5(d) is a top view of a schematic structural diagram of a radio frequency switch 500 in a second conductive state according to an embodiment of the application;

Fig. 6 is a schematic structural diagram of a moving belt line provided by an embodiment of the application;

FIG. 7(a) is a schematic structural diagram of a radio frequency switch 700 according to an embodiment of the application;

FIG. 7(b) is a schematic diagram of a partial structure of a radio frequency switch 700 according to an embodiment of the application.

detailed description

The following explains the terms involved or may be involved in this application:

1. At least one refers to one or more than one, that is, one, two, three or more;

2. Multiple refers to two or more than two, that is, two, three, four and more;

3. Connection refers to coupling, including direct connection or indirect connection via other devices to achieve electrical communication.

In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly defined and defined, the terms "connected", "connected", and "connected" should be understood in a broad sense. For example, they can be fixedly connected or can be The connection between the two elements can be the internal communication or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the embodiments of the present application can be understood according to specific circumstances.

The terms "first", "second", "third", etc. in the description and claims of the embodiments of the application and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. order. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

The network equipment involved in this embodiment may include, but is not limited to, the base station (Base Transceiver Station, BTS) in the GSM or CDMA system, the base station (NodeB, NB) in the WCDMA system, and the evolved base station (Evolutional NodeB, eNB) in the LTE system. (Or eNodeB), the wireless controller in the Cloud Radio Access Network (CRAN) scenario, or relay stations, access points, in-vehicle devices, wearable devices, and base stations in the future 5G network or the future evolved PLMN network The base station in this application, for example, a new wireless base station, is not limited in the embodiment of the present application. The network equipment can provide wireless cell signal coverage and serve the terminal equipment in one or more cells.

The embodiments of the present application will be described in detail below in conjunction with the drawings.

Please refer to FIG. 1, which is a schematic diagram of an application scenario provided by an embodiment of this application. The base station antenna 100 includes a feeder network 110, an antenna array 120, and a radio frequency switch 130. The feeder network 110 is used to connect a radio frequency front end (such as radio frequency The radio frequency signal of the remote unit is fed to the antenna array 120. And when the radio frequency switch 130 is in the first state, the base station antenna 100 can form a wide beam to achieve wide coverage. When the radio frequency switch 130 is in the second state, the base station antenna 100 can also form two narrow beams to achieve alignment. High power coverage when users are concentrated. For ease of description, two states are taken as examples here. The radio frequency switch 130 may have a variety of different states, which is not limited in this application.

In order to adapt to the complexity of communication scenarios and the increase of communication frequency bands, the present application provides a radio frequency switch that not only has a large power capacity but also a small size.

Please refer to FIG. 2, which is a radio frequency switch provided by this application, which includes a cavity 210, a first fixed belt line 220 and a first moving belt line 230. The first fixing strap 220 is disposed in the cavity 210 and is parallel to the first cavity wall 211 of the cavity 210. The first moving belt line 230 is disposed in the cavity 210 and is movable in a direction perpendicular to the first cavity wall 211 between the plane of the first cavity wall 211 and the plane of the first fixing belt line 220. The projection of the first fixed belt line 220 and the first moving belt line 230 on the plane where the first cavity wall 211 is partially overlapped.

Wherein, when the first moving belt line 230 moves to contact with the first fixed belt line 220, that is, the first moving belt line 230 and the first fixed belt line 220 are electrically connected, that is, the radio frequency switch is in a conducting state. When the first moving belt line 230 moves to contact the inner wall of the first cavity wall 211, that is, the first moving belt line 230 is electrically connected to the first cavity wall 211, that is, the radio frequency switch is in the off state, the first The moving belt line 230 is electrically connected to the cavity 210, in other words, the first moving belt line 230 is grounded. Optionally, as long as the first moving belt line 230 moves to the point where it is not in contact with the first fixed belt line 220, the radio frequency switch may be in the off state.

It can be seen that by using the radio frequency switch provided by the embodiment of the present application, the connection and disconnection with the first fixed belt line 220 can be realized by moving the moving belt line 230 in the cavity 210 in a direction perpendicular to the first cavity wall 211. In order to realize the radio frequency switch function, this cavity-type radio frequency switch not only has a large power capacity, but also the moving belt line 230 only moves inside the cavity 210 without occupying additional volume.

In the above-mentioned embodiment, the first moving belt line 230 of the radio frequency switch 200 moves to contact with the first fixed belt line 220 to achieve a conductive state. Optionally, the first moving belt line 230 is moved to be fixed to two different places. Strip wire contact to connect two different fixed strip wires to realize the conduction state of the radio frequency switch. The embodiment of the present application provides another radio frequency switch. Please refer to FIG. 3. The radio frequency switch 300 not only includes a cavity 310, a first fixed belt line 320 and a first moving belt line 330, but also includes a second fixed belt line 340. The first fixing strap 320 is disposed in the cavity 310 and parallel to the first cavity wall 311 of the cavity 310. The first moving belt line 330 is disposed in the cavity 310 and is movable in a direction perpendicular to the first cavity wall 311 between the plane where the first cavity wall 311 is located and the plane where the first fixing belt line 320 is located. The projections of the first fixed belt line 320 and the first moving belt line 330 on the plane where the first cavity wall 311 is partially overlapped. The second fixing strap 340 is disposed in the cavity 310 and parallel to the first cavity wall 311. The projections of the second fixing strap line 340 and the first fixing strap line 320 on the plane of the first cavity wall 311 do not overlap, that is, they are independent of each other. The projection of the second fixed belt line 340 and the first moving belt line 330 on the plane where the first cavity wall 311 is partially overlapped.

It can be seen that when the first moving belt line 330 moves to contact the first fixed belt line 320 and the second fixed single line 340, that is, the first moving belt line 330 connects the first fixed belt line 320 and the second fixed belt line 340. When connected, the electrical connection between the first fixed strap line 320 and the fixed strap line 340 is realized, that is, the radio frequency switch is in a conducting state. When the first moving belt line 330 moves to contact the inner wall of the first cavity wall 311, that is, the first moving belt line 330 is electrically connected to the first cavity wall 311, that is, the radio frequency switch is in an off state, in other words , The first moving belt line 330 is grounded. Optionally, as long as the first moving belt line 330 does not contact the first fixed belt line 320 and the second fixed belt line 340 at the same time, it can be in the off state of the radio frequency switch.

Optionally, the first moving belt line 230 or the first moving belt line 330 in the radio frequency switch shown in FIG. 2 or FIG. 3 may also be in the plane of the second cavity wall and the plane of the first fixed belt line. It is movable in a direction perpendicular to the first cavity wall, which is not shown in the figure. The second cavity wall is a cavity wall parallel to the first cavity wall on the cavity.

Optionally, the first fixing strap line 220 and the second fixing strap line 240 shown in FIG. 3 may be integrally formed. For example, they may be on the same printed circuit board (PCB). Optionally, the first fixing strap line 220 and the second fixing strap line 240 shown in FIG. 3 may be on the same plane (shown in the figure) or not on the same plane (not shown in the figure) .

Optionally, the radio frequency switch provided in the present application may include multiple moving belt lines. The following takes two moving belt lines as an example for description. Please refer to FIGS. 4(a) to 4(d), which are embodiments of this application. A schematic structural diagram of a radio frequency switch 400 is provided. The radio frequency switch 400 is a four-port network, which can realize four switching states, including a cavity 410, a first fixed belt line 420, a second fixed belt line 422, and a third fixed The belt line 424, the fourth fixed belt line 426, the first moving belt line 430, and the second moving belt line 440. Among them, four fixing strap lines are arranged in the cavity 410 and parallel to the first cavity wall 411 of the cavity 410. The first moving belt line 430 is arranged in the cavity 410, and is on the plane of the first cavity wall 411 and the fixed belt line (the four fixed belt lines shown in the figure are on the same plane, so the fixed belt line It means that any one of the four fixed belt lines is movable in a direction perpendicular to the first cavity wall 411 between the planes where the fixed belt lines are located. The projections of the four fixed strap lines and the first moving strap lines 430 on the plane where the first cavity wall 411 is located partially overlap. The four fixing strap lines are independent of each other, and the projections of the four fixing strap lines on the plane where the first cavity wall 411 is located do not overlap. The projections of the second moving belt line 440 and the four fixed belt lines on the plane where the first cavity wall is located partially overlap. Optionally, the four fixing strap lines may not be on the same plane. For example, some fixing strap lines are closer to the first cavity wall 411, and some fixing strap lines are closer to the second cavity wall 412. This application There is no limitation on this, wherein the second cavity wall 412 is a cavity wall parallel to the first cavity wall 411.

Optionally, the second moving belt line 440 (or the first moving belt line 430) may only be connected to one of the four fixed belt lines (not shown), which is not limited in the embodiment of the present application.

For example, the first moving belt lines 430 shown in FIGS. 4(a) to 4(d) are two two-port moving belt lines, which are the sub-moving belt line 431 and the sub-moving belt line 432, respectively. The strip line 431 couples and connects the first fixed strip line 420 and the second fixed strip line 422, and the sub-moving strip line 432 couples and connects the third fixed strip line 424 and the fourth fixed strip line 426. The second moving belt line 440 is a four-port moving belt line, which is respectively coupled to the four fixed belt lines. Wherein, the sub-moving belt line 431 and the sub-moving belt line 432 shown in the figure are on the same PCB. Optionally, the sub-moving belt line 431 and the sub-moving belt line 432 may not be on the same PCB, which is not limited in this application. Among them, the first moving belt line 430 and the second moving belt line 440 shown in FIGS. 4(a) to 4(d) are both PCB structures. As can be seen in the figure, the first moving belt line 430 or the second moving belt line 440 all electrically connect the metal layers on both sides of the PCB dielectric board through at least one metalized via (shown in the black solid rectangle in the figure). Optionally, the first moving belt line 430 or the second moving belt line 440 may also be other conductor structures, which is not limited in this application. In addition, the fixing strip lines shown in Figs. 4(a) to 4(d) may also have a PCB structure or other conductor structures, which is not limited in this application.

It can be seen that by using the radio frequency switch 400 of the embodiment of the present application, four switching states can be realized. When the first moving belt line 430 moves to contact the four fixed belt lines, and the second moving belt line 440 moves to contact the cavity. When 410 is in contact, the first conduction state is achieved, as shown in Figure 4(a) and Figure 4(b), the direct coupling conduction state; when the second moving belt line 440 moves to contact with the four fixed belt lines When the first moving belt line 430 moves to contact with the cavity 410, the second conduction state is realized, as shown in FIG. 4(c) and FIG. 4(d), as shown in FIG. 4 (c) and Figure 4(d) shows the cross-coupling conduction state; when the first moving belt line 430 moves to contact the cavity 410, and the second moving belt line 440 moves to contact the cavity 410, it is realized In the off state of the radio frequency switch (not shown), when the first moving belt line 430 moves to contact with the four fixed belt lines, and the second moving belt line 440 moves to also contact with the four fixed belt lines , The third conduction state (not shown) is realized, thereby flexibly implementing the four-port radio frequency switch in four switching states.

Further, when the radio frequency switch shown in FIG. 4 is applied to an antenna, when the radio frequency switch 400 is connected to the antenna array, only the moving belt line needs to be moved within the volume of the radio frequency switch to realize the switch state Switch to achieve different beam states.

This application does not limit the number of ports of the radio frequency switch. The radio frequency switch provided in this application can also be other ports, such as two ports, five ports, etc., please refer to Figures 5(a) to 5(d), which are The application embodiment provides a schematic structural diagram of a radio frequency switch 500, which is a three-port radio frequency switch that can realize four switching states. The radio frequency switch 500 specifically includes a cavity 510, a first fixed belt line 520, a second fixed belt line 522, a third fixed belt line 524, a first moving belt line 530, and a second moving belt line 532. Among them, three fixing strap lines are arranged in the cavity 510 and parallel to the first cavity wall 511 of the cavity 510. The first moving belt line 530 is arranged in the cavity 510, and is on the plane of the first cavity wall 511 and the fixed belt line (the three fixed belt lines shown in the figure are on the same plane, so the fixed belt line It means that any one of the three fixed belt lines is movable in a direction perpendicular to the first cavity wall 511 between the planes where the fixed belt lines are located. The first fixing belt line 520 and the third fixing belt line 524 respectively overlap with the projection of the first moving belt line 530 on the plane where the first cavity wall 511 is located. The three fixing strap lines are independent of each other, and the projections of the three fixing strap lines on the plane where the first cavity wall 511 is located do not overlap. The second moving belt line 532 partially overlaps the projections of the second fixed belt line 522 and the third fixed belt line 524 on the plane where the first cavity wall 511 is located. Optionally, the three fixing strap lines may not be on the same plane. For example, some fixing strap lines are closer to the first cavity wall 511, and some fixing strap lines are closer to the second cavity wall 512. This application There is no restriction on this, where the second cavity wall 512 is a cavity wall parallel to the first cavity wall 511 on the cavity 510. Optionally, the second moving belt line 532 (or the first moving belt line 530) may be connected to only one of the three fixed belt lines (not shown), which is not limited in the embodiment of the present application.

The structure of the first moving belt line 530 and the second moving belt line 532 shown in FIGS. 5(a) to 5(d) are the same, both of which are two-port moving belt lines, which can respectively realize the first fixed belt line 520 The coupling connection with the third fixing strap line 524 and the coupling connection with the second fixing strap line 522 and the third fixing strap line 524. Optionally, the fixed belt line or the moving belt line shown in FIGS. 5(a) to 5(d) may be a PCB structure (for illustration in FIG. 5, refer to the PCB structure in FIG. 4).

Therefore, by using the radio frequency switch 500 of the embodiment of the present application, four switching states can be realized. When the first moving belt line 530 moves to contact with the three fixed belt lines, and the second moving belt line 532 moves to contact the cavity. When 510 is in contact, the first conduction state is achieved, as shown in Figure 5(a) and Figure 5(b); when the second moving belt line 532 moves to contact with the three fixed belt lines, and the first When the moving belt line 530 moves to contact with the cavity 510, the second conduction state is realized, as shown in Fig. 5(c) and Fig. 5(d); when the first moving belt line 530 moves to the cavity 510 510 touches, and the second moving belt line 532 moves to contact with the cavity 510 to realize the disconnected state of the radio frequency switch (not shown), when the first moving belt line 530 moves to contact the three fixed belt lines When the second moving belt line 532 is moved to also contact with the three fixed belt lines, the third conducting state (not shown) is realized, thereby flexibly realizing the three-port radio frequency switch in four switching states.

It can be seen from the above that the radio frequency switch may include multiple moving belt lines or multiple fixed belt lines. The structures of the multiple moving belt lines may be the same or different, and the structures of the multiple fixed belt lines may be the same or different. This application There is no restriction on this. For example, the two moving belt lines shown in Figure 4 (a) to Figure 4 (d) have different structures, and the two moving belt lines shown in Figure 5 (a) to Figure 5 (d) have different structures. The structure is the same, the structure of the moving belt line can be a moving belt line with a four-port structure as shown in the second moving moving belt line 440 in Figure 4 (a) to Figure 4 (d), or as shown in Figure 5 (a) ) To the moving belt line of the two-port structure shown in the first moving moving belt line 530 (or the second moving moving belt line 532) in FIG. 5(d), the moving belt line structure provided by the embodiment of the present application may also be With the three-port structure shown in FIG. 6, the embodiment of the present application does not specifically limit the structure of the moving strip line.

Optionally, any one of the above radio frequency switches may further include a driving module 760, and the driving module 760 includes a driving part 761 and a connecting part 762 that are connected to each other. Please refer to FIG. 7(a) and FIG. 7(b). ), for ease of description, the embodiment shown in FIG. 4 is taken as an example for description. The driving portion 761 is provided on the outer surface of the first cavity wall 411, and the connecting portion 762 penetrates through the through hole and the first cavity wall 411. The first moving belt line 430 is connected, and/or the connecting portion 762 is connected to the second moving belt line 440 through the via hole on the first cavity wall 411, and the connecting portion 762 is driven by the driving portion 761 to drive the first The moving belt line 430 and/or the second moving belt line 440 move. Optionally, the driving part 761 may not only be disposed on the outer surface of the first cavity wall 411, but also may be disposed on the outer surface of the second cavity wall 412. The present application does not limit the position of the driving part 761. The second cavity wall 412 is a cavity wall on the cavity 410 parallel to the first cavity wall 411. Optionally, the connecting portion 762 may be connected to multiple moving belt lines at the same time, which is not limited in the embodiment of the present application.

It can be seen that through the driving action of the driving module 760, the moving belt line can be driven to move in the cavity, thereby realizing the switching state of the switch.

Optionally, the driving part 761 described in the embodiment of the present application may be a motor or a relay.

An embodiment of the application also provides an antenna, including the radio frequency switch provided in the embodiment of the application.

The embodiment of the present application also provides a network device, including the radio frequency switch provided in the embodiment of the present application, and/or the aforementioned antenna.

An embodiment of the present application also provides a communication system, including the radio frequency switch provided in the embodiment of the present application, and/or the above-mentioned antenna, and/or the above-mentioned network device.

Although some possible embodiments in this application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the embodiments of the application and all changes and modifications falling within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A radio frequency switch, characterized by comprising a cavity, a first fixed belt line and a first moving belt line;

The first fixing strap line is arranged in the cavity and parallel to the first cavity wall of the cavity;

The first moving belt line is arranged in the cavity and is movable in a direction perpendicular to the first cavity wall between the plane where the first cavity wall is located and the plane where the first fixed belt line is located ；

The projection of the first fixed belt line and the first moving belt line on the plane where the first cavity wall is partially overlapped.
The radio frequency switch according to claim 1, wherein the device further comprises a second fixing strap line;

The second fixing strap line is arranged in the cavity and parallel to the first cavity wall of the cavity;

The projections of the second fixing strap line and the first fixing strap line on the plane where the first cavity wall is located do not overlap;

The projection of the second fixed belt line and the first moving belt line on the plane where the wall of the first cavity is partially overlapped.
The radio frequency switch according to claim 2, wherein the first fixing strap line and the second fixing strap line are integrally formed.
The radio frequency switch according to any one of claims 1 to 3, wherein the device further comprises a second moving belt line;

The second moving belt line is arranged in the cavity and is movable in a direction perpendicular to the first cavity wall between the plane where the second cavity wall is located and the plane where the first fixed belt line is located, wherein The second cavity wall is a cavity wall parallel to the first cavity wall on the cavity.
The radio frequency switch according to claim 4, wherein the second moving belt line partially overlaps the projection of the first fixed belt line on the plane where the wall of the first cavity is located;

And/or, the projection of the second moving belt line and the second fixed belt line on the plane where the first cavity wall is partially overlapped.
The radio frequency switch according to any one of claims 1 to 5, wherein the device further comprises a driving module,

The driving module includes a driving part and a connecting part connected to each other;

The driving part is arranged on the outer surface of the first cavity wall, the connecting part penetrates the via hole on the first cavity wall to be connected to the first moving belt line, and the connecting part is located at the Driving the first moving belt to move under the driving of the driving part;

Alternatively, the driving portion is provided on the outer surface of the second cavity wall, the connecting portion penetrates through a via hole on the second cavity wall to be connected to the first moving belt, and the connecting portion Driven by the driving part to drive the first moving belt to move.
The radio frequency switch according to claim 4, wherein the device further comprises a driving module,

The driving module includes a driving part and a connecting part connected to each other;

The driving part is arranged on the outer surface of the first cavity wall, and the connecting part penetrates the via hole on the first cavity wall to be connected to the first moving belt line, and/or the connection The via hole that penetrates the first cavity wall is connected to the second moving belt line, and the connecting part is driven by the driving part to drive the first moving belt line and/or the The second movement moves with the line;

Alternatively, the driving part is provided on the outer surface of the second cavity wall, and the connecting part penetrates the via hole on the second cavity wall to be connected to the first moving belt line, and/or, so The connecting portion is connected to the second moving belt line through a via hole penetrating through the wall of the second cavity, and the connecting portion is driven by the driving portion to drive the first moving belt line and/or The second moving belt moves.
An antenna, characterized by comprising the radio frequency switch according to any one of claims 1 to 7.
A network device, characterized by comprising the radio frequency switch according to any one of claims 1 to 7, and/or the antenna according to claim 8.
A communication system, characterized by comprising the radio frequency switch according to any one of claims 1 to 7, and/or the antenna according to claim 8, and/or the network device according to claim 9.