CN219321782U - Radio frequency interface switching device - Google Patents

Abstract

The embodiment of the application relates to the technical field of communication and discloses a radio frequency interface switching device. The radio frequency interface switching device comprises a first radio frequency connector, a connecting wire and a plurality of second radio frequency connectors. The first radio frequency connector comprises a first radio frequency interface and a first transmission interface which are communicated with each other. One end of the connecting wire is electrically connected with the first transmission interface. The plurality of second radio frequency connectors are sequentially connected in series at different positions on the connecting line, each second radio frequency connector comprises a second radio frequency interface, a first leading-out end and a second leading-out end which are sequentially connected in series on the connecting line along the direction away from the first transmission interface, and a switch which can selectively communicate the first leading-out end with the second radio frequency interface or the second leading-out end. The radio frequency interface switching device provided by the embodiment of the application can realize switching of three or more than three multiple radio frequency interfaces.

Description

Radio frequency interface switching device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a radio frequency interface switching device.

Background

When communication radio frequency signals are transmitted between different radio frequency devices, the connection between the transmission line and the radio frequency devices needs to be realized by means of a radio frequency connector. That is, radio frequency connectors are typically provided at the ends of the transmission lines to establish radio frequency signal transmission paths between the various radio frequency devices. Because of the variety of rf connectors in practical situations, it is often necessary to switch between different types of rf connectors during the connection process.

However, most of the rf adapters in the prior art are one-to-one, and it is impossible to implement switching of three or more rf interfaces.

Disclosure of Invention

An object of the embodiments of the present application is to provide a radio frequency interface switching device, which can implement switching of three or more than three kinds of radio frequency interfaces.

In order to solve the above technical problems, an embodiment of the present application provides a radio frequency interface switching device, which includes a first radio frequency connector, a connecting wire, and a plurality of second radio frequency connectors. The first radio frequency connector comprises a first radio frequency interface and a first transmission interface which are communicated with each other. One end of the connecting wire is electrically connected with the first transmission interface. The plurality of second radio frequency connectors are sequentially connected in series at different positions on the connecting line, each second radio frequency connector comprises a second radio frequency interface, a first leading-out end and a second leading-out end which are sequentially connected in series on the connecting line along the direction away from the first transmission interface, and a switch which can selectively communicate the first leading-out end with the second radio frequency interface or the second leading-out end.

In some embodiments of the present application, the first rf connector and the plurality of second rf connectors are connected in series on a connecting line. After the first radio frequency connector and the external radio frequency connector to be switched are matched, radio frequency signals can be transmitted on the connecting line. Each second radio frequency connector is provided with a switch for controlling whether a second radio frequency interface of the second radio frequency connector is connected with a connecting wire, so that after a certain second radio frequency connector is matched with an external corresponding radio frequency connector, a radio frequency signal path can be formed between the radio frequency interface of the external radio frequency connector to be switched and the radio frequency interface of the second radio frequency connector through the communication function played by the control of the switch. Thereby playing the role of switching the radio frequency interfaces of different radio frequency connectors and realizing the switching of three or more than three kinds of radio frequency interfaces.

In some embodiments, the switch is a single pole double throw switch, the common end of the switch is in communication with the first lead-out end, the first stationary end of the switch is in communication with the second lead-out end, and the second stationary end of the switch is in communication with the second radio frequency interface. In this way, the desired type of radio frequency connector can be connected into the radio frequency signal path formed via the connection line by controlling the state of the switch.

In some embodiments, the common terminal of the switch is connected to the second outgoing terminal by default, and is connected to the second radio frequency interface under the trigger of the second radio frequency interface accessing the external radio frequency connector. Therefore, the second radio frequency connector can be automatically accessed into a radio frequency signal path formed by the connecting wire after being matched with an external corresponding radio frequency connector.

In some embodiments, the radio frequency interface switching device further comprises a PCB board, the first radio frequency connector and the plurality of second radio frequency connectors are both fixed on the PCB board, and the connection line is a radio frequency trace on the PCB board. Therefore, the serial connection of a plurality of radio frequency connectors can be conveniently realized through the PCB.

In some embodiments, the first radio frequency interface and the second radio frequency interface are both protruding from an edge of the PCB. Thus, the user can conveniently pair the radio frequency connector with an external radio frequency interface.

In some embodiments, the first radio frequency interface and the plurality of second radio frequency interfaces are oriented in different directions, respectively. Thus, the specific types of different radio frequency connectors on the PCB can be conveniently identified by a user.

In some embodiments, the first rf connector and the plurality of second rf connectors are soldered to the PCB. Thus, the connection strength of the radio frequency connector on the PCB can be ensured.

In some embodiments, the radio frequency interface switching device further comprises a third radio frequency connector arranged on the PCB board, the third radio frequency connector comprises a third radio frequency interface and a second transmission interface which are communicated, and the second transmission interface is electrically connected with the other end of the connecting wire. Thus, by setting the third radio frequency connector, the type of the radio frequency connector on the radio frequency interface switching device can be expanded.

In some embodiments, the third radio frequency connector is disposed adjacent to the first radio frequency connector. Therefore, the radio frequency connectors positioned at the two ends of the connecting wire can be conveniently identified, and the user can conveniently use the radio frequency connector in practice.

In some embodiments, the first rf connector is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector, each of the second rf connectors is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector, and the third rf connector is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic structural diagram of a radio frequency interface switching device according to some embodiments of the present application;

fig. 2 is a schematic circuit diagram of a radio frequency interface switching device according to some embodiments of the present application;

FIG. 3 is a schematic cross-sectional view of a second RF connector provided in some embodiments of the present application when unmated;

fig. 4 is a schematic cross-sectional view of a second rf connector provided in some embodiments of the present application after mating.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of each embodiment of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Because of the importance of impedance matching in rf transmission, rf connectors often cannot be designed directly into a one-channel signal-division-multiple-channel signal structure. Meanwhile, the integrity requirement of the radio frequency signal also makes the radio frequency signal not directly split as the high-current transmission. The radio frequency adapter in the market is almost one-to-one, for example, one N-head is converted into one SMA head, one BNC head is converted into one N head, and the like.

In practical laboratory applications or common connection of radio frequency devices, the radio frequency instrument often needs to perform conversion of various radio frequency interfaces, such as a spectrometer, a network analyzer, etc., usually has an N-type interface female head, and when the device is used, the device often needs to be abutted with an SMA interface male and female head, an N-type interface, or a BNC type interface, etc. This makes a test device often equipped with three or four adapters, and the more serious problem is that the connector at the instrument end is repeatedly screwed and pulled out, resulting in sliding of the locking threads, and reduced radio frequency performance (e.g., the promised plugging life of an N-type interface is only 500 times). Which in turn affects the accuracy of the test instrument and causes expensive maintenance costs.

In order to implement switching of three or more radio frequency interfaces, some embodiments of the present application provide a radio frequency interface switching device. The radio frequency connectors with different types of radio frequency interfaces are connected in series, wherein the radio frequency connector connected with the radio frequency interface to be switched is positioned at the beginning end of the series connection structure, and the radio frequency interface required after switching is positioned at the middle position or the tail end of the series connection structure. Meanwhile, the switch structure is arranged in the radio frequency connector at the middle position on the serial structure, and the switch can be triggered to switch under the condition of accessing the external radio frequency interface, so that the external radio frequency interface can form a passage with the radio frequency connector at the starting end of the serial structure, and the transfer function is achieved.

The following describes the structure of the rf interface switching device according to some embodiments of the present application with reference to fig. 1 to 4.

As shown in fig. 1 and fig. 2, the rf interface switching device provided in some embodiments of the present application includes a first rf connector 10, a connecting wire 20, and a plurality of second rf connectors 30. The first rf connector 10 includes a first rf interface 11 and a first transmission interface 12 in communication with each other. One end of the connection line 20 is electrically connected to the first transmission interface 12. The second rf connectors 30 are sequentially connected in series to different positions on the connection line 20, and each of the second rf connectors 30 includes a second rf interface 31, a first outlet 32 and a second outlet 33 sequentially connected in series to the connection line 20 along a direction away from the first transmission interface 12, and a switch 34 for selectively connecting the first outlet 32 to the second rf interface 31 or the second outlet 33.

The first rf connector 10 mates with an rf connector to be switched outside the rf interface switching device, i.e. the first rf connector 10 is part of the input stage. The first rf connector 10 is located at one end of the connection line 20, which may also be referred to as the beginning of the connection line 20. The first rf interface 11 of the first rf connector 10 may be mated with an rf interface of an external rf connector to be switched, and the first transmission interface 12 of the first rf connector 10 may be connected with other types of rf connectors so as to transmit rf signals to the rf interfaces of the other types of rf connectors.

The connection line 20 plays a role of radio frequency signal transmission, and the connection line 20 can form a passage between different types of radio frequency connectors, so that radio frequency signals formed after the first radio frequency connector 10 is matched with the radio frequency connector to be switched can be transmitted to other types of radio frequency connectors through the passage.

The plurality of second rf connectors 30 are the parts of the rf interface adapter that mate with the converted rf connectors, i.e., the rf connectors at the output stage. Each second rf connector 30 has, in addition to a second rf interface 31 for mating with the rf interface of the switched rf connector, a first outlet 32 and a second outlet 33 connected in series to the connection line 20, and a switch 34. By controlling the state of the switch 34, it is possible to selectively form a radio frequency signal path between the first outlet 32 and the second radio frequency interface 31, or between the first outlet 32 and the second outlet 33. The switch 34 may be an electronically controlled switch or a physically triggered switch. The plurality of second rf connectors 30 are connected in series at different positions on the connection line 20, as shown in fig. 1, there are a plurality of disconnection positions on the connection line 20, and the first outlet 32 and the second outlet 33 of each second rf connector 30 are connected to different end points of the disconnection positions on the connection line 30 to form a series structure.

In some embodiments of the present application, the first rf connector 10 and the plurality of second rf connectors 30 are connected in series to one connecting line 20. After the first rf connector 10 is mated with an external rf connector to be transferred, the rf signal may be transmitted over the connection line 20. Each second rf connector 30 has a switch 34 for controlling whether the second rf interface 31 of the second rf connector is connected to the connecting line 20, so that after the pairing between a certain second rf connector 30 and an external corresponding rf connector is completed, a rf signal path can be formed between the rf interface of the external rf connector to be switched and the rf interface of the second rf connector through the communication function performed by the control of the switch 34. Thereby playing the role of switching the radio frequency interfaces of different radio frequency connectors and realizing the switching of three or more than three kinds of radio frequency interfaces.

For example, when the first rf connector 10 is an N-type connector (divided into a male and a female), the plurality of second rf connectors 30 may be of SMA type (divided into a male and a female), BNC type (divided into a male and a female), or TNC type (divided into a male and a female), respectively. That is, after the first rf connector 10 is paired with the N-type rf interface of the N-type rf connector to be switched, if the rf instrument needs to dock the SMA rf connector, the first rf connector is paired with the SMA rf connector; if the radio frequency instrument needs to be abutted with the BNC type radio frequency connector, the radio frequency instrument is matched with the BNC type radio frequency connector; if the radio frequency instrument needs to be in butt joint with the TNC type radio frequency connector, the TNC type radio frequency connector is matched with the TNC type radio frequency connector.

In some embodiments of the present application, the switch 34 is a single pole double throw switch 34, the common end 341 of the switch 34 is in communication with the first outlet 32, the first stationary end 342 of the switch 34 is in communication with the second outlet 33, and the second stationary end 343 of the switch 34 is in communication with the second radio frequency interface 31.

The single pole double throw switch 34 can be used to switch between two communication states, the common terminal 341 of the switch 34 is a control terminal and also a signal input terminal, the first static terminal 342 and the second static terminal 343 of the switch 34 are output terminals, and input signals from the common terminal 341 are received. By employing a single pole double throw switch 34, it is possible to switch between the second rf interface 31 and the second outlet 33 of the second rf connector 30, and when one of the second rf interface 31 and the second outlet 33 is in communication with the first outlet 32, the other is disconnected from the first outlet 32, thereby enabling the second rf interface 31 to be connected to the rf signal path formed by the connection line 20.

In addition, the common terminal 341 of the switch 34 may be connected to the second output terminal 33 by default, and connected to the second rf interface 31 under the triggering of the second rf interface 31 accessing the external rf connector.

In this way, by adopting the form of the trigger switch 34, the switching between the second rf interface 31 and the second outlet 33 can be quickly completed, which is convenient for practical use.

As shown in fig. 3, when the second rf interface 31 of the second rf connector 30 is not mated, the first outlet 32 and the second outlet 33 are in a connected state via the trigger member 35, and the first outlet 32 and the second rf interface 31 are in a disconnected state via the insulating member 36. After the second rf interface 31 of the second rf connector 30 completes the pairing, as shown in fig. 4, the first outlet 32 is in direct contact with the second rf interface 31 to form a connected state. The trigger 35, which is in electrical contact with the first lead-out terminal 32, is remote from the second lead-out terminal 33, and the first lead-out terminal 32 and the second lead-out terminal 33 are isolated from each other via an insulating member 36 to form an open state. Wherein, the trigger member 35 for switching may be disposed on the first outlet end 32 of the second rf connector 30, and the trigger member 35 is pushed to move to automatically disconnect the communication between the first outlet end 32 and the second outlet end 33 along with the connection of the rf interface of the external rf connector.

In some embodiments of the present application, the rf interface adapter further includes a PCB (Printed Circuit Board ) board, the first rf connector 10 and the plurality of second rf connectors 30 are both fixed on the PCB board 40, and the connection line 20 is a rf trace on the PCB board 40.

By means of the PCB board 40, mounting locations can be provided for different types of radio frequency connectors. Meanwhile, the radio frequency wiring on the PCB board 40 can facilitate the serial connection between different types of radio frequency connectors. In a practical case, the radio frequency trace may be a 50 ohm radio frequency trace.

As shown in fig. 1, the first rf interface 11 and the second rf interface 31 may be both protruding from the edge of the PCB 40.

In this way, the pairing between the first rf connector 10, the second rf connector 30 and the external rf interface can be facilitated, avoiding blocking interference during pairing.

In some embodiments of the present application, the first rf interface 11 and the plurality of second rf interfaces 31 are respectively oriented in different directions.

Therefore, the user can conveniently identify the positions of the radio frequency connectors of different types, and the radio frequency connector is convenient for the user to use.

In other embodiments, part or all of the first rf interface 11 and the second rf interfaces 31 may be oriented in the same direction, so as to save the installation space on the PCB 40.

In addition, the first rf connector 10 and the plurality of second rf connectors 30 may be soldered on the PCB 40.

By soldering, the connection strength of the first rf connector 10 and the plurality of second rf connectors 30 on the PCB 40 can be ensured. When a certain radio frequency connector is damaged, a user can weld and replace the radio frequency connector by himself.

In some embodiments of the present application, the rf interface adapter further includes a third rf connector 50 disposed on the PCB board 40, where the third rf connector 50 includes a third rf interface 51 and a second transmission interface 52 that are in communication, and the second transmission interface 52 is electrically connected to the other end of the connection line 20.

The third rf connector 50 is disposed at the end of the connection line 20, and the third rf connector 50 may be a rf connector without the function of the switch 34, similar to the structure of the first rf connector 10. Since the third rf connector 50 is at the end of the connection line 20, the first transmission interface 12 of the first rf connector 10 communicates with the second transmission interface 52 of the third rf connector 50 via the connection line 20 without mating the second rf connectors 30. And further, the pairing with the external corresponding rf connector is achieved through the third rf interface 51 of the third rf connector 50. The type of rf connector on the rf interface adapter can be extended by the third rf connector 50.

In addition, the third rf connector 50 may be disposed adjacent to the first rf connector 10.

Thus, by bringing the first rf connector 10 and the third rf connector 50 close to each other, the rf connectors located at the beginning and end of the connection line 20 can be easily identified for practical use by a user.

In some embodiments of the present application, the first rf connector 10 is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector, each of the second rf connectors 30 is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector, and the third rf connector 50 is any one of a BNC-type rf connector, an N-type rf connector, an SMA-type rf connector, and a TNC-type rf connector.

The radio frequency connectors can be male radio frequency connectors or female radio frequency connectors so as to be matched with external radio frequency interfaces according to actual needs. In addition, commonly required radio frequency connectors can be configured in the radio frequency interface switching device.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the present application and that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims (10)

1. A radio frequency interface switching device, comprising:

the first radio frequency connector comprises a first radio frequency interface and a first transmission interface which are communicated with each other;

one end of the connecting wire is electrically connected with the first transmission interface;

the plurality of second radio frequency connectors are sequentially connected in series at different positions on the connecting wire, each second radio frequency connector comprises a second radio frequency interface, a first leading-out end and a second leading-out end which are sequentially connected in series on the connecting wire along the direction away from the first transmission interface, and a switch which can selectively communicate the first leading-out end to the second radio frequency interface or the second leading-out end.

2. The radio frequency interface switching device according to claim 1, wherein:

the switch is a single-pole double-throw switch, the common end of the switch is communicated with the first leading-out end, the first static end of the switch is communicated with the second leading-out end, and the second static end of the switch is communicated with the second radio frequency interface.

3. The radio frequency interface switching device according to claim 2, wherein:

the public end of the switch is communicated to the second leading-out end by default and is communicated to the second radio frequency interface under the triggering of the second radio frequency interface connected to an external radio frequency connector.

4. The radio frequency interface switching device according to claim 1, wherein:

the radio frequency connector comprises a plurality of second radio frequency connectors and is characterized by further comprising a PCB, wherein the first radio frequency connector and the plurality of second radio frequency connectors are fixed on the PCB, and the connecting line is a radio frequency wiring on the PCB.

5. The radio frequency interface switching device according to claim 4, wherein:

the first radio frequency interface and the second radio frequency interface are both protruded out of the edge of the PCB.

6. The radio frequency interface switching device according to claim 5, wherein:

the first radio frequency interface and the plurality of second radio frequency interfaces face different directions respectively.

7. The radio frequency interface switching device according to claim 4, wherein:

the first radio frequency connector and the plurality of second radio frequency connectors are welded on the PCB.

8. The radio frequency interface switching device according to claim 4, wherein:

the PCB is characterized by further comprising a third radio frequency connector arranged on the PCB, wherein the third radio frequency connector comprises a third radio frequency interface and a second transmission interface which are communicated, and the second transmission interface is electrically connected with the other end of the connecting wire.

9. The radio frequency interface switching device according to claim 8, wherein:

the third radio frequency connector is disposed adjacent to the first radio frequency connector.

10. The radio frequency interface switching device according to claim 8, wherein:

the first radio frequency connector is any one of BNC type radio frequency connector, N type radio frequency connector, SMA type radio frequency connector and TNC type radio frequency connector, each second radio frequency connector is any one of BNC type radio frequency connector, N type radio frequency connector, SMA type radio frequency connector and TNC type radio frequency connector, and the third radio frequency connector is any one of BNC type radio frequency connector, N type radio frequency connector, SMA type radio frequency connector and TNC type radio frequency connector.

Images