CN111740187B - Radio frequency switch and antenna - Google Patents
Radio frequency switch and antenna Download PDFInfo
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- CN111740187B CN111740187B CN201910228840.6A CN201910228840A CN111740187B CN 111740187 B CN111740187 B CN 111740187B CN 201910228840 A CN201910228840 A CN 201910228840A CN 111740187 B CN111740187 B CN 111740187B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/127—Strip line switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transceivers (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application provides a radio frequency switch, including cavity, first fixed band line and first removal band line. The first fixing strip line is arranged in the cavity and is parallel to the first cavity wall of the cavity. The first movable belt line is arranged in the cavity and can move in the direction perpendicular to the first cavity wall between the plane of the first cavity wall and the plane of the first fixed belt line. The projection part of the first fixed belt line and the projection part of the first movable belt line on the plane of the first cavity wall are overlapped. By adopting the radio frequency switch, the connection and disconnection with the first fixed strip line can be realized by moving the movable strip line in the direction vertical to the wall of the first cavity in the cavity, so that the function of the radio frequency switch is realized.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a radio frequency switch and an antenna.
Background
In a communication system, a base station antenna needs to form different beams to adapt to different communication scenarios, that is, the base station antenna can support switching of different scenarios, and a radio frequency switch is one of key devices for implementing beam switching, and specifically, beam switching can be implemented through different states of the radio frequency switch.
Disclosure of Invention
The application provides a radio frequency switch and an antenna, and aims to provide a miniaturized radio frequency switch with high power capacity.
In a first aspect, the present application provides a radio frequency switch comprising a cavity, a first fixed strip line, and a first moving strip line. The first fixing strip line is arranged in the cavity and is parallel to the first cavity wall of the cavity. The first movable belt line is arranged in the cavity and can move in the direction perpendicular to the first cavity wall between the plane of the first cavity wall and the plane of the first fixed belt line. The projection part of the first fixed belt line and the projection part of the first movable belt line on the plane of the first cavity wall are overlapped.
It can be seen that, by adopting the radio frequency switch, the connection and disconnection with the first fixed strip line can be realized by moving the movable strip line in the direction perpendicular to the first cavity wall in the cavity, so that the radio frequency switch function is realized.
In one embodiment, the first moving strip line of the rf switch moves into contact with the first fixed strip line to achieve the conducting state, and optionally, the first moving strip line moves into contact with two different fixed strip lines to connect the two different fixed strip lines, thereby achieving the conducting state of the rf switch. Therefore, the radio frequency switch provided by the application comprises a cavity, a first fixed strip line, a first movable strip line and a second fixed strip line. The first fixing strip line is arranged in the cavity and is parallel to the first cavity wall of the cavity. The first movable belt line is arranged in the cavity and can move in the direction perpendicular to the first cavity wall between the plane of the first cavity wall and the plane of the first fixed belt line. The projection part of the first fixed belt line and the projection part of the first movable belt line on the plane of the first cavity wall are overlapped. The second fixing belt line is arranged in the cavity and is parallel to the first cavity wall. The projection of the second fixed belt line and the first fixed belt line on the plane of the first cavity wall is not overlapped. The second fixed belt line is overlapped with the projection part of the first movable belt line on the plane of the first cavity wall.
Optionally, the first fixing strip line and the second fixing strip line may be integrally formed, for example, on a same Printed Circuit Board (PCB).
It can be seen that when the first moving strip line moves to contact with the first fixed strip line and to contact with the second fixed single line, that is, the first moving strip line connects the first fixed strip line and the second fixed strip line, the electrical connection between the first fixed strip line and the fixed strip line is realized, that is, the radio frequency switch is in a conducting state. When the first moving strip line moves to be in contact with the inner wall of the first cavity wall, namely the first moving strip line is electrically connected with the first cavity wall, namely the radio frequency switch is in an off state, in other words, the first moving strip line is grounded. Alternatively, the radio frequency switch may be in an off state as long as the first moving belt moves to a position where the first moving belt does not contact the first fixed belt line and the second fixed belt line simultaneously.
Optionally, the radio frequency switch provided in the present application may further include a plurality of fixed strip lines, and the number of the fixed strip lines is not limited in the present application.
In another embodiment, the radio frequency switch provided by the present application may include a plurality of moving strip lines, for example, when the radio frequency switch includes two moving strip lines, that is, when the radio frequency switch includes a second moving strip line in addition to the first moving strip line, the second moving strip line is disposed in the cavity and is movable in a direction perpendicular to the first cavity wall between a plane where a second cavity wall is located and a plane where the first fixed strip line is located, wherein the second cavity wall is a cavity wall of the cavity parallel to the first cavity wall.
The second moving strip line is overlapped with the projection part of the first fixed strip line on the plane of the first cavity wall. And/or the projection part of the second moving strip line and the second fixed strip line on the plane of the first cavity wall are overlapped.
It can be seen that as the number of the moving strip lines increases and/or the number of the fixed strip lines increases, the switching state of the radio frequency switch also increases, and more switching states can be realized.
In yet another embodiment, the rf switch as described in any of the above may further include a driving module, and the driving module includes a driving portion and a connecting portion 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 in the first cavity wall to be connected with the first movable strip line, and the connecting part drives the first movable strip line to move under the driving of the driving part. Or, the driving part is arranged on the outer surface of the wall of the second cavity, the connecting part penetrates through the via hole in the wall of the second cavity and is connected with the first movable strip line, and the connecting part drives the first movable strip line to move under the driving of the driving part.
Therefore, the radio frequency switch can realize the switching of different states through the driving action of the driving module.
Optionally, the connecting portion may simultaneously connect a plurality of moving strip lines, for example, simultaneously connect two moving strip lines, the connecting portion penetrates through the via hole on the first cavity wall (or the via hole on the second cavity wall) to connect with the first moving strip line, and/or the connecting portion penetrates through the via hole on the first cavity wall (or the via hole on the second cavity wall) to connect with the second moving strip line, and the connecting portion drives the first moving strip line and/or the second moving strip line to move under the driving of the driving portion.
In a second aspect, the present application further provides an antenna including any one of the possible implementation manners of the first aspect and the first aspect.
In a third aspect, the present application further provides a network device, which includes the antenna in any one of the first aspect and any one of the possible implementation manners of the first aspect, and/or any one of the possible implementation manners of the second aspect and the second aspect, and the network device further includes a plurality of transceivers TRX, where the plurality of TRXs are respectively connected to one radio port of the base station device, and for example, the TRXs may be remote radio units.
In a fourth aspect, the present application further provides a communication system, including the first aspect and any one of the possible implementation manners of the first aspect, and/or the antenna of any one of the possible implementation manners of the second aspect and the second aspect, and/or the network device of any one of the possible implementation manners of the third aspect and the third aspect.
Drawings
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an rf switch 200 according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an rf switch 300 according to an embodiment of the present disclosure;
fig. 4(a) is a side view of a schematic structural diagram of an rf switch 400 in a first conducting state according to an embodiment of the present application;
fig. 4(b) is a schematic top view of an rf switch 400 in a first conducting state according to an embodiment of the present disclosure;
fig. 4(c) is a side view of a schematic structural diagram of an rf switch 400 in a second conducting state according to an embodiment of the present application;
fig. 4(d) is a bottom view of a schematic structural diagram of an rf switch 400 in a second conducting state according to an embodiment of the present disclosure;
fig. 5(a) is a side view of a schematic structural diagram of an rf switch 500 in a first conducting state according to an embodiment of the present application;
fig. 5(b) is a top view of a schematic structural diagram of an rf switch 500 in a first conducting state according to an embodiment of the present application;
fig. 5(c) is a side view of a schematic structural diagram of an rf switch 500 in a second conducting state according to an embodiment of the present application;
fig. 5(d) is a top view of a schematic structural diagram of an rf switch 500 in a second conducting state according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a moving strip line according to an embodiment of the present disclosure;
fig. 7(a) is a schematic structural diagram of an rf switch 700 according to an embodiment of the present application;
fig. 7(b) is a schematic partial structure diagram of an rf switch 700 according to an embodiment of the present disclosure.
Detailed Description
The following explains the words that the present application relates to or may relate to:
1. at least one, means one, or more than one, i.e. including one, two, three and more;
2. a plurality, means two, or more than two, that is, two, three, four and more than two;
3. connected, meaning coupled, includes directly connected or indirectly connected through other devices to achieve electrical communication.
In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "connected," "communicating," and "connecting" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intermediary agent, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
The terms "first," "second," "third," and the like in the description and in the claims of the embodiments of the application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The Network device related to this embodiment may include, but is not limited to, a Base Station (BTS) in a GSM or CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved node b (eNB or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a Base Station in a relay Station, an Access point, a vehicle-mounted device, a wearable device, and a future 5G Network or a Base Station in a future evolved PLMN Network, for example, a new wireless Base Station, and the embodiment of the present application is not limited. The network device may provide wireless cell signal coverage and serve terminal devices with one or more cells.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Please refer to fig. 1, which is a schematic diagram of an application scenario provided in the present embodiment, wherein a base station antenna 100 includes a feeding network 110, an antenna array 120, and a radio frequency switch 130, wherein the feeding network 110 is used for feeding a radio frequency signal of a radio frequency front end (e.g., a radio remote unit) to the antenna array 120. When the rf switch 130 is in the first state, the base station antenna 100 may form a wide beam to achieve wide coverage, and when the rf switch 130 is in the second state, the base station antenna 100 may also form two narrow beams to achieve high power coverage when the user is more focused. For convenience of illustration, two states are taken as examples herein, and the rf switch 130 may have a plurality of different states, which is not limited in this application.
In order to adapt to the complexity of a communication scene and the increase of a communication frequency band, the radio frequency switch is large in power capacity and small in size.
Please refer to fig. 2, which is a radio frequency switch provided in the present application, including a cavity 210, a first fixed strip line 220 and a first moving strip line 230. The first fixing strip line 220 is disposed in the cavity 210 and is parallel to the first cavity wall 211 of the cavity 210. The first moving strip line 230 is disposed within the chamber 210 and is movable in a direction perpendicular to the first chamber wall 211 between a plane of the first chamber wall 211 and a plane of the first fixed strip line 220. The first fixed strip line 220 overlaps the projection of the first moving strip line 230 onto the plane of the first chamber wall 211.
When the first moving strip line 230 moves to contact with the first fixed strip line 220, the first moving strip line 230 and the first fixed strip line 220 are electrically connected, that is, the rf switch is in a conducting state. When the first moving strip line 230 moves to contact with the inner wall of the first cavity wall 211, i.e. the first moving strip line 230 is electrically connected to the first cavity wall 211, i.e. the rf switch is in the off state, the first moving strip line 230 is electrically connected to the cavity 210, in other words, the first moving strip line 230 is grounded. Alternatively, the rf switch may be in an off state as long as the first moving strip line 230 moves out of contact with the first fixed strip line 220.
It can be seen that, with the radio frequency switch provided in the embodiment of the present application, the connection and disconnection with the first fixed strip line 220 can be realized by moving the movable strip line 230 in the cavity 210 in a direction perpendicular to the first cavity wall 211, so as to realize a radio frequency switch function, and the cavity-type radio frequency switch not only has a large power capacity, but also does not occupy an additional volume when the movable strip line 230 moves only inside the cavity 210.
In the above embodiment, the first moving strip line 230 of the rf switch 200 is moved into contact with the first fixed strip line 220 to achieve the on state, and optionally, the first moving strip line 230 is moved into contact with two different fixed strip lines to connect the two different fixed strip lines, thereby achieving the on state of the rf switch. Referring to fig. 3, the rf switch 300 includes not only a cavity 310, a first fixed strip line 320, and a first moving strip line 330, but also a second fixed strip line 340. The first fixing strip line 320 is disposed in the cavity 310 and parallel to the first cavity wall 311 of the cavity 310. The first moving strip 330 is disposed within the cavity 310 and is movable in a direction perpendicular to the first cavity wall 311 between a plane of the first cavity wall 311 and a plane of the first fixed strip 320. The first fixed strip line 320 overlaps the projection of the first moving strip line 330 on the plane of the first cavity wall 311. The second fixing strip line 340 is disposed in the cavity 310 and parallel to the first cavity wall 311. The second fixing strip line 340 and the first fixing strip line 320 do not overlap in projection on the plane of the first cavity wall 311, i.e. they are independent of each other. The second fixed strip line 340 overlaps the projection of the first moving strip line 330 on the plane of the first cavity wall 311.
It can be seen that when the first moving strip line 330 moves into contact with the first fixed strip line 320 and into contact with the second fixed single line 340, i.e. the first moving strip line 330 connects the first fixed strip line 320 and the second fixed strip line 340, the electrical connection between the first fixed strip line 320 and the fixed strip line 340 is achieved, i.e. the rf switch is in a conducting state. When the first moving strip 330 moves to contact with the inner wall of the first cavity 311, i.e. the first moving strip 330 is electrically connected to the first cavity 311, i.e. the rf switch is in an off state, in other words, the first moving strip 330 is grounded. Alternatively, the rf switch may be in an off state as long as the first moving strip line 330 moves to not contact the first fixed strip line 320 and the second fixed strip line 340 at the same time.
Optionally, the first moving strip line 230 or the first moving strip line 330 in the radio frequency switch shown in fig. 2 or fig. 3 may be movable in a direction perpendicular to the first cavity wall between a plane of the second cavity wall and a plane of the first fixed strip line, which is not shown in the figure, wherein the second cavity wall is a cavity wall parallel to the first cavity wall on the cavity.
Alternatively, the first fixing strip line 220 and the second fixing strip line 240 shown in fig. 3 may be integrally formed, for example, on the same Printed Circuit Board (PCB). Alternatively, the first fixing strip line 220 and the second fixing strip line 240 shown in fig. 3 may be on the same plane (shown in the figure) or not (not shown in the figure).
Optionally, the radio frequency switch provided in the present application may include a plurality of moving strip lines, and the following description refers to fig. 4(a) to 4(d), which are schematic structural diagrams of the radio frequency switch 400 provided in the embodiment of the present application, where the radio frequency switch 400 is a four-port network, and may implement four switching states, specifically including a cavity 410, a first fixed strip line 420, a second fixed strip line 422, a third fixed strip line 424, a fourth fixed strip line 426, a first moving strip line 430, and a second moving strip line 440. The four fixing strip lines are disposed in the cavity 410 and parallel to the first cavity wall 411 of the cavity 410. The first moving strip 430 is disposed within the chamber 410 and is movable in a direction perpendicular to the first chamber wall 411 between a plane of the first chamber wall 411 and a plane of the fixed strip (the four fixed strips shown in the figures are in the same plane, so the fixed strip refers to any one of the four fixed strips here). The four fixed strip lines overlap with the projection of the first moving strip line 430 onto the plane of the first chamber wall 411. The four fixation strip lines are independent of each other and their projections onto the plane of the first chamber wall 411 do not overlap. The second moving strip 440 overlaps the four fixed strip projections in the plane of the first chamber wall. Optionally, the four fixing strap lines may not be on a plane, and 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, which is a cavity wall parallel to the first cavity wall 411.
Alternatively, the second moving strip line 440 (or the first moving strip line 430) may be connected to only one of the four fixed strip lines (not shown), which is not limited by the embodiment of the present application.
Illustratively, the first moving strip line 430 shown in fig. 4(a) to 4(d) is two-port moving strip lines, namely a sub moving strip line 431 and a sub moving strip line 432, wherein the sub moving 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 strip 440 is a four-port moving strip coupled to four fixed strips. The sub moving strip line 431 and the sub moving strip line 432 are shown on the same PCB, and optionally, the sub moving strip line 431 and the sub moving strip line 432 may not be on the same PCB, which is not limited in the present application. In which, the first moving strip line 430 and the second moving strip line 440 shown in fig. 4(a) to 4(d) are both of PCB structure, and it can be seen that, the first moving strip line 430 or the second moving strip line 440 are both electrically connected to the metal layers on both sides of the PCB dielectric board through at least one metalized via (shown as black solid rectangle in the figure). Alternatively, the first moving strip 430 or the second moving strip 440 may have other conductor structures, which is not limited in this application. In addition, the fixing strip line shown in fig. 4(a) to 4(d) may also be a PCB structure or other conductor structures, which is not limited in this application.
It can be seen that by using the rf switch 400 of the embodiment of the present application, four switching states can be realized, and when the first moving strip 430 moves to contact with four fixed strips and the second moving strip 440 moves to contact with the cavity 410, a first conducting state is realized, such as the direct-coupled conducting state shown in fig. 4(a) and fig. 4 (b); when the second moving strip 440 moves into contact with the four fixed strips and the first moving strip 430 moves into contact with the cavity 410, a second conductive state, such as the second conductive state shown in fig. 4(c) and 4(d), and the cross-coupled conductive state shown in fig. 4(c) and 4(d) are achieved; when the first moving strip line 430 moves to be in contact with the cavity 410 and the second moving strip line 440 moves to be in contact with the cavity 410, an off state (not shown) of the rf switch is realized, and when the first moving strip line 430 moves to be in contact with four fixed strip lines and the second moving strip line 440 moves to be also in contact with four fixed strip lines, a third on state (not shown) is realized, thereby flexibly realizing a four-port rf switch in four switching states.
Further, when the rf switch shown in fig. 4 is applied to an antenna, when the rf switch 400 is connected to an antenna array, the switch state can be switched only by moving the moving strip line within the volume of the rf switch, so as to implement beams in different states.
The number of ports of the rf switch is not limited in the present application, and the rf switch provided in the present application may also be other port numbers, such as two ports, five ports, and the like, please refer to fig. 5(a) to 5(d), which are schematic structural diagrams of an rf switch 500 provided in the embodiment of the present application, and are a three-port rf switch, and can implement four switching states. The rf switch 500 specifically includes a cavity 510, a first fixed strip 520, a second fixed strip 522, a third fixed strip 524, a first moving strip 530, and a second moving strip 532. The three fixing strip lines are disposed in the cavity 510 and parallel to the first cavity wall 511 of the cavity 510. The first moving strip 530 is disposed within the chamber 510 and is movable in a direction perpendicular to the first chamber wall 511 between the plane of the first chamber wall 511 and the plane of the fixed strip (the three fixed strips are shown in the figures to be in the same plane, and thus the fixed strip is referred to herein as any one of the three fixed strips). The first fixed strip line 520 and the third fixed strip line 524 overlap with a projection of the first moving strip line 530 on the plane of the first chamber wall 511, respectively. The three fixation strips are independent of each other and their projections onto the plane of the first cavity wall 511 do not overlap. The second moving strip 532 overlaps with the projection of the second fixed strip 522 and the third fixed strip 524 on the plane of the first chamber wall 511, respectively. Optionally, the three fastening straps may not be on a plane, and for example, some fastening straps may be closer to the first cavity wall 511, and some fastening straps may be closer to the second cavity wall 512, which is not limited in this application, where the second cavity wall 512 is a cavity wall of the cavity 510 that is parallel to the first cavity wall 511. Alternatively, the second moving strip 532 (or the first moving strip 530) may be connected to only one of the three fixed strips (not shown), which is not limited in the embodiments of the present application.
The first moving strip line 530 and the second moving strip line 532 shown in fig. 5(a) to 5(d) have the same structure, are both moving strip lines with two ports, and can realize the coupling connection of the first fixed strip line 520 and the third fixed strip line 524 and the coupling connection of the second fixed strip line 522 and the third fixed strip line 524, respectively. Alternatively, the fixed strip line or the moving strip line shown in fig. 5(a) to 5(d) may be a PCB structure (not shown in fig. 5, refer to the PCB structure in fig. 4).
Thus, by using the rf switch 500 of the embodiment of the present application, four switching states can be realized, when the first moving strip 530 moves to contact with the three fixed strips and the second moving strip 532 moves to contact with the cavity 510, a first conducting state is realized, such as the states shown in fig. 5(a) and 5 (b); when the second moving strip 532 moves into contact with the three fixed strips and the first moving strip 530 moves into contact with the cavity 510, a second conductive state is achieved, as shown in fig. 5(c) and 5 (d); when the first moving strip 530 moves to be in contact with the cavity 510 and the second moving strip 532 moves to be in contact with the cavity 510, an off state (not shown) of the rf switch is realized, and when the first moving strip 530 moves to be in contact with three fixed strips and the second moving strip 532 moves to also be in contact with three fixed strips, a third on state (not shown) is realized, thereby flexibly realizing a three-port rf switch in four switching states.
As can be seen from the above, the rf switch may include a plurality of moving strip lines, or a plurality of fixed strip lines, the structures of the plurality of moving strip lines may be the same or different, and the structures of the plurality of fixed strip lines may be the same or different, which is not limited in this application, for example, the structures of two moving strip lines shown in fig. 4(a) to 4(d) are different, the structures of two moving strip lines shown in fig. 5(a) to 5(d) are the same, the structure of a moving strip line may be a moving strip line with a four-port structure shown in fig. 4(a) to 4(d) as a second moving strip line 440, or a moving strip line with a two-port structure shown in fig. 5(a) to 5(d) as a first moving strip line 530 (or a second moving strip line 532), the moving strip line structure provided in this embodiment of the present application may also be a 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, the rf switch may further include a driving module 760, and the driving module 760 includes a driving portion 761 and a connecting portion 762 connected to each other, please refer to fig. 7(a) and fig. 7(b), for convenience of description, the description is made in conjunction with the embodiment shown in fig. 4 by way of example, where the driving portion 761 is disposed on the outer surface of the first cavity wall 411, the connecting portion 762 penetrates through a via hole on the first cavity wall 411 to be connected to the first moving strip 430, and/or the connecting portion 762 penetrates through a via hole on the first cavity wall 411 to be connected to the second moving strip 440, and the connecting portion 762 drives the first moving strip 430 and/or the second moving strip 440 to move under the driving of the driving portion 761. Optionally, the driving portion 761 may be disposed not only on the outer surface of the first cavity wall 411, but also on the outer surface of the second cavity wall 412, and the application does not limit the disposition position of the driving portion 761, where the second cavity wall 412 is a cavity wall of the cavity 410 parallel to the first cavity wall 411. Alternatively, the connection portion 762 may connect a plurality of moving belt lines at the same time, which is not limited in the embodiment of the present application.
Therefore, the driving module 760 can drive the movable strip line to move in the cavity, so that the switching state of the switch is changed.
Alternatively, the driving portion 761 according to the embodiment of the present application may be a motor or a relay.
The embodiment of the application also provides an antenna which comprises the radio frequency switch provided by the embodiment of the application.
The embodiment of the present application further provides a network device, which includes the radio frequency switch provided in the embodiment of the present application, and/or the antenna.
The embodiment of the present application further provides a communication system, which includes the radio frequency switch provided in the embodiment of the present application, and/or the antenna, and/or the network device.
While some possible embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the embodiments of the application and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (9)
1. A radio frequency switch is characterized by comprising a cavity, a first fixed strip line and a first movable strip line;
the first fixing strip line is arranged in the cavity and is parallel to the first cavity wall of the cavity;
the first movable strip line is arranged in the cavity and can move in a direction perpendicular to the first cavity wall between the plane of the first cavity wall and the plane of the first fixed strip line;
the projection part of the first fixed strip line and the first movable strip line on the plane of the first cavity wall is overlapped;
the radio frequency switch further comprises a second moving strip line;
the second movable belt line is arranged in the cavity and can move in a direction perpendicular to the first cavity wall between the plane of the second cavity wall and the plane of the first fixed belt line, wherein the second cavity wall is a cavity wall parallel to the first cavity wall on the cavity;
when the first moving strip line moves into contact with the inner wall of the first cavity wall, the first moving strip line is grounded; when the second moving strip moves into contact with the inner wall of the second cavity wall, the second moving strip is grounded.
2. The radio frequency switch of claim 1, further comprising a second fixed strip line;
the second fixing strip line is arranged in the cavity and is parallel to the first cavity wall of the cavity;
the projection of the second fixed belt line and the projection of the first fixed belt line on the plane of the first cavity wall are not overlapped;
the second fixed belt line is overlapped with the projection part of the first movable belt line on the plane of the first cavity wall.
3. The radio frequency switch of claim 2, wherein the first and second retaining strap wires are integrally formed.
4. The radio frequency switch according to claim 2 or 3, wherein the second moving strip line overlaps with a projection of the first fixed strip line on a plane of the first cavity wall;
and/or the projection part of the second moving strip line and the second fixed strip line on the plane of the first cavity wall is overlapped.
5. The RF switch according to any of claims 1 to 3, further comprising a driving module,
the driving module comprises a driving part and a connecting part which are connected with each other;
the driving part is arranged on the outer surface of the first cavity wall, the connecting part penetrates through a through hole in the first cavity wall and is connected with the first movable strip line, and the connecting part drives the first movable strip line to move under the driving of the driving part;
or, the driving part is arranged on the outer surface of the wall of the second cavity, the connecting part penetrates through the via hole in the wall of the second cavity and is connected with the first movable strip line, and the connecting part drives the first movable strip line to move under the driving of the driving part.
6. The RF switch of claim 5, further comprising a drive module,
the driving module comprises a driving part and a connecting part which are connected with each other;
the driving part is arranged on the outer surface of the first cavity wall, the connecting part penetrates through a via hole on the first cavity wall and is connected with the first movable strip line, and/or the connecting part penetrates through a via hole on the first cavity wall and is connected with the second movable strip line, and the connecting part drives the first movable strip line and/or the second movable strip line to move under the driving of the driving part;
or, the driving part is arranged on the outer surface of the wall of the second cavity, the connecting part penetrates through the via hole in the wall of the second cavity and is connected with the first movable strip line, and/or the connecting part penetrates through the via hole in the wall of the second cavity and is connected with the second movable strip line, and the connecting part drives the first movable strip line and/or the second movable strip line to move under the driving of the driving part.
7. An antenna comprising a radio frequency switch as claimed in any one of claims 1 to 6.
8. A network device comprising a radio frequency switch according to any of claims 1 to 6 and/or an antenna according to claim 7.
9. A communication system comprising a radio frequency switch according to any of claims 1 to 6, and/or an antenna according to claim 7, and/or a network device according to claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228840.6A CN111740187B (en) | 2019-03-25 | 2019-03-25 | Radio frequency switch and antenna |
| PCT/CN2020/080956 WO2020192664A1 (en) | 2019-03-25 | 2020-03-24 | Radio frequency switch and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228840.6A CN111740187B (en) | 2019-03-25 | 2019-03-25 | Radio frequency switch and antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111740187A CN111740187A (en) | 2020-10-02 |
| CN111740187B true CN111740187B (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910228840.6A Active CN111740187B (en) | 2019-03-25 | 2019-03-25 | Radio frequency switch and antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111740187B (en) |
| WO (1) | WO2020192664A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080088A (en) * | 1992-06-05 | 1993-12-29 | 麦加帕尔斯股份有限公司 | High-power RF switch |
| CN101026053A (en) * | 2006-02-20 | 2007-08-29 | 三星电子株式会社 | Downward type MEMS switch and method for fabricating the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3087741B2 (en) * | 1998-11-04 | 2000-09-11 | 日本電気株式会社 | Micro machine switch |
| US6391675B1 (en) * | 1998-11-25 | 2002-05-21 | Raytheon Company | Method and apparatus for switching high frequency signals |
| US7157993B2 (en) * | 2003-09-30 | 2007-01-02 | Rockwell Scientific Licensing, Llc | 1:N MEM switch module |
| KR100619110B1 (en) * | 2004-10-21 | 2006-09-04 | 한국전자통신연구원 | Microelectromechanical switch and method of manufacturing the same |
| US8592876B2 (en) * | 2012-01-03 | 2013-11-26 | International Business Machines Corporation | Micro-electro-mechanical system (MEMS) capacitive OHMIC switch and design structures |
-
2019
- 2019-03-25 CN CN201910228840.6A patent/CN111740187B/en active Active
-
2020
- 2020-03-24 WO PCT/CN2020/080956 patent/WO2020192664A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080088A (en) * | 1992-06-05 | 1993-12-29 | 麦加帕尔斯股份有限公司 | High-power RF switch |
| CN101026053A (en) * | 2006-02-20 | 2007-08-29 | 三星电子株式会社 | Downward type MEMS switch and method for fabricating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020192664A1 (en) | 2020-10-01 |
| CN111740187A (en) | 2020-10-02 |
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