CN209881758U - Signal gating switch - Google Patents
Signal gating switch Download PDFInfo
- Publication number
- CN209881758U CN209881758U CN201920537544.XU CN201920537544U CN209881758U CN 209881758 U CN209881758 U CN 209881758U CN 201920537544 U CN201920537544 U CN 201920537544U CN 209881758 U CN209881758 U CN 209881758U
- Authority
- CN
- China
- Prior art keywords
- signal transmission
- diode
- inductor
- input
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses a signal gating switch belongs to switch circuit design field, including public ground circuit andnthe channel signal transmission circuit is connected with the signal transmission circuit,nis constant andnthe output end of the input/output port is connected with the input/output port through the blocking capacitor, and the negative electrode of the diode is connected with the control port; the anodes of the diodes in the signal transmission circuits are connected and then connected to a common grounding circuit. When two paths of conducting signals are selected randomly in the multi-path signal transmission circuit, only the selected two paths of switch control ports are added with low level, and other paths of switch control ports keep the original high level state, so that the two paths of circuits applying the low level can be realizedAnd conducting.
Description
Technical Field
The utility model relates to a switching circuit design technical field, in particular to signal gating switch.
Background
In the whole microwave system, whether a transmitter or a receiver or a T/R component, a switch is one of the widely used microwave components. In recent years, with the development of science and technology, the performance requirement on the switch is higher and higher, and the traditional multi-way switch has a public end when being used, and the public end is invariable. The conventional multi-way switch has the disadvantages that: the layout has no flexibility, signals are switched to other branches after passing through the public circuit, and once the public end has a fault, the whole switch cannot be used.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a signal gating switch need not the public end, and two tunnel signals of arbitrary selection switch on in the multiple switch.
In order to achieve the above object, the present invention provides a signal gating switch, including: the circuit comprises a common grounding circuit and n signal transmission circuits, wherein n is a constant and is more than or equal to 3, each signal transmission circuit comprises a diode, an input/output port, a blocking capacitor and a control port, one end of the diode is connected with the input/output port through the blocking capacitor, and one end of the diode is connected with the control port; the other ends of the diodes in the signal transmission circuits are connected and then connected to a common grounding circuit.
Furthermore, the control port is connected with one end of the diode after being connected with the first inductor in series, and the control port is connected with the decoupling capacitor in series and then grounded.
Furthermore, the common ground circuit comprises a resistor and a second inductor, the other end of the diode in each signal transmission circuit is connected and then connected to one end of the second inductor, and the other end of the second inductor is connected in series with the resistor and then grounded.
Compared with the prior art, the utility model discloses there are following technological effect: the utility model discloses in, the diode among every way signal transmission circuit is used for the signal to switch on, and input/output port can regard as the input port, also can regard as the delivery outlet. When two paths of conducting signals are randomly selected from the multi-path signal transmission circuit, the two paths of circuits to which low levels are applied can be conducted only by applying low levels to the selected two paths of switch control ports and keeping the other paths of switch control ports in a high level state; or the high level is added to the selected two switch control ports, and the other switch control ports keep the low level state, so that the two circuits applying the high level can be conducted. This scheme mainly contains components and parts such as diode, electric capacity, inductance, and it is few to use components and parts, and circuit design is simple, and is with low costs, integrates well and small, and the reliability is high.
Drawings
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a signal gating switch;
FIG. 2 is a schematic diagram of a three-way signal gated switch with reverse diode connection;
fig. 3 is a schematic structural diagram of forward connection of four-way signal gating switch diodes.
Detailed Description
To further illustrate the features of the present invention, please refer to the following detailed description and accompanying drawings. The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure.
The embodiment discloses a signal gating switch, which comprises: the circuit comprises a common grounding circuit and n signal transmission circuits, wherein n is a constant and is more than or equal to 3, each signal transmission circuit comprises a diode, an input/output port, a blocking capacitor and a control port, one end of the diode is connected with the input/output port through the blocking capacitor, and one end of the diode is connected with the control port; the other ends of the diodes in the signal transmission circuits are connected and then connected to a common grounding circuit.
It should be noted that, in this embodiment, the diode includes two modes of forward connection and reverse connection, and the diode forward connection method is shown in fig. 1: the cathode of the diode is connected with the input/output port through the blocking capacitor, and the cathode of the diode is connected with the control port; the anode of the diode in each signal transmission circuit is connected and then connected to the common grounding circuit.
In the electronic circuit, current can only flow in from the anode and flow out from the cathode of the diode because the diode has unidirectional conductivity. The diode is conducted by connecting the anode of the diode to the high potential end and the cathode of the diode to the low potential end. Therefore, when a low level is applied to any two of the n signal transmission circuits, and the remaining signal transmission circuits are kept in a high level state, the two signal transmission circuits to which the low level is applied are turned on.
The reverse connection method of the diode is as follows: the anode of the diode is connected with the input/output port through the blocking capacitor, and the anode of the diode is connected with the control port; the negative electrode of the diode in each signal transmission circuit is connected and then connected to the common grounding circuit.
Since the diodes are connected in reverse, when a high level is applied to any two of the n signal transmission circuits, and the other signal transmission circuits are kept in a low level state, the two signal transmission circuits to which the high level is applied are turned on.
It should be noted that, the scheme can switch two paths at will in the multi-path switch to gate the signal for use, has very good flexibility, and when any one path of signal transmission circuit is abnormal, the normal use of other signal transmission circuits is not affected.
Furthermore, when the diode is connected positively, the control port is connected with the first inductor in series and then connected to the cathode of the diode, and the control port is connected with the decoupling capacitor in series and then grounded. When the diode is reversely connected, the control port is connected with the first inductor in series and then connected to the anode of the diode, and the control port is connected with the decoupling capacitor in series and then grounded. The capacitor plays a role of decoupling, the inductor plays a role of bias choking, and a control signal is introduced from the control port, filtered by the decoupling capacitor and then choked by the inductor, so that the on-off of the diode is controlled.
The common grounding circuit comprises a capacitor and a second inductor, when the anode of the diode is connected, the anode of the diode in each signal transmission circuit is connected and then connected with one end of the second inductor, the other end of the second inductor is connected with the resistor in series and then grounded, when the cathode of the diode in each signal transmission circuit is connected and then connected with one end of the second inductor, and the other end of the second inductor is connected with the resistor in series and then grounded. The main function of the inductor and the resistor is to provide a complete ground loop.
As shown in fig. 2, the diode reverse connection method is explained by taking a three-way switch as an example: the signal gating switch comprises a common grounding circuit and 3 paths of signal transmission circuits, wherein the first path of signal transmission circuit comprises a diode D1, a control port KZ1, an input/output port J1 and a microstrip signal transmission blocking capacitor C1; the anode of the diode D1 is connected with one end of a capacitor C1 and one end of an inductor L1 respectively, the other end of the capacitor C1 is connected with an input/output port J1, the other end of the inductor L1 is connected with one end of a decoupling capacitor C2 and a control port KZ1 respectively, and the other end of the decoupling capacitor C2 is grounded;
the second path of signal transmission circuit comprises a diode D2, a control port KZ2, an input/output port J2 and a microstrip signal transmission DC blocking capacitor C3; the anode of the diode D2 is connected with one end of a capacitor C3 and one end of an inductor L2 respectively, the other end of the capacitor C3 is connected with an input/output port J2, the other end of the inductor L2 is connected with one end of a decoupling capacitor C4 and a control port KZ2 respectively, and the other end of the decoupling capacitor C4 is grounded;
the third signal transmission circuit comprises a diode D3, a control port KZ3, an input/output port J3 and a microstrip signal transmission DC blocking capacitor C5; the anode of the diode D3 is connected with one end of a capacitor C5 and one end of an inductor L3 respectively, the other end of the capacitor C5 is connected with an input/output port J3, the other end of the inductor L3 is connected with one end of a decoupling capacitor C6 and a control port KZ3 respectively, and the other end of the decoupling capacitor C6 is grounded;
the common-common ground circuit comprises an inductor L and a resistor R, one end of the inductor L is connected with one end of the resistor R, the other end of the resistor R is grounded, the cathodes of the diodes in the signal transmission circuits are connected with a common point, and the common point is connected with the other end of the inductor L.
Microwave signals can be input into any one of the three paths and then output from any one of the other two paths, and according to the same method and according to actual use requirements, two paths of switches are arbitrarily selected to be switched on in the switches, and specific switching control relations are shown in the following table 1:
TABLE 1
As shown in fig. 3, a four-way switch is taken as an example to illustrate a diode forward connection method, the signal gating switch includes a common ground circuit and 4 signal transmission circuits, the first signal transmission circuit includes a diode D1, a control port KZ1, an input/output port J1 and a microstrip signal transmission blocking capacitor C1; the cathode of the diode D1 is respectively connected with one end of a capacitor C1 and one end of an inductor L1, the other end of the capacitor C1 is connected with an input/output port J1, the other end of the inductor L1 is respectively connected with one end of a decoupling capacitor C2 and a control port KZ1, and the other end of the decoupling capacitor C2 is grounded;
the second path of signal transmission circuit comprises a diode D2, a control port KZ2, an input/output port J2 and a microstrip signal transmission DC blocking capacitor C3; the cathode of the diode D2 is respectively connected with one end of a capacitor C3 and one end of an inductor L2, the other end of the capacitor C3 is connected with an input/output port J2, the other end of the inductor L2 is respectively connected with one end of a decoupling capacitor C4 and a control port KZ2, and the other end of the decoupling capacitor C4 is grounded;
the third signal transmission circuit comprises a diode D3, a control port KZ3, an input/output port J3 and a microstrip signal transmission DC blocking capacitor C5; the cathode of the diode D3 is respectively connected with one end of a capacitor C5 and one end of an inductor L3, the other end of the capacitor C5 is connected with an input/output port J3, the other end of the inductor L3 is respectively connected with one end of a decoupling capacitor C6 and a control port KZ3, and the other end of the decoupling capacitor C6 is grounded;
the fourth signal transmission circuit comprises a diode D4, a control port KZ4, an input/output port J4 and a microstrip signal transmission DC blocking capacitor C7; the cathode of the diode D4 is respectively connected with one end of a capacitor C7 and one end of an inductor L4, the other end of the capacitor C7 is connected with an input/output port J4, the other end of the inductor L4 is respectively connected with one end of a decoupling capacitor C8 and a control port KZ4, and the other end of the decoupling capacitor C8 is grounded;
the common-common ground circuit comprises an inductor L and a resistor R, one end of the inductor L is connected with one end of the resistor R, the other end of the resistor R is grounded, the anodes of the diodes in the signal transmission circuits are connected with a common point, and the common point is connected with the other end of the inductor L.
Specifically, when a low level (-5V) is applied to KZ1 and KZ4, and KZ2 and KZ3 are not applied, and the original high level state is maintained, diodes D1 and D4 are turned on, and diodes D2 and D3 are turned off. Therefore, the paths from J1 to J4 are conducted, a microwave signal is input from a J1 port, passes through a microwave signal transmission blocking capacitor (C1) and a diode D1, is connected with D1 and D4, and is output from a J4 port after finally passing through a signal transmission blocking capacitor (C4), or vice versa, is input from a J4 port and is output from a J1 port.
Microwave signals can be input into any one of the four paths and then output into any one of the other three paths, and two paths of switches are arbitrarily selected to be switched on in the switches according to the actual use requirements by the same method, wherein the specific switching control relationship is shown in the following table 2:
TABLE 2
It should be noted that the utility model provides a signal gating switch circuit can strobe the switch of two way signals wantonly, compares with traditional switch, and convenient and flexibility is higher more, the pressure of the spatial layout that has significantly reduced in the design. And the microwave oven has the advantages of good reliability, simple design, low cost and the like, and the performance index meets the design requirement and is suitable for various microwave systems.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (3)
1. A signal gating switch, comprising: common ground circuit andnthe channel signal transmission circuit is connected with the signal transmission circuit,nis constant andnnot less than 3 per laneThe signal transmission circuit comprises a diode, an input/output port, a blocking capacitor and a control port, wherein one end of the diode is connected with the input/output port through the blocking capacitor, and one end of the diode is connected with the control port; the other ends of the diodes in the signal transmission circuits are connected and then connected to a common grounding circuit.
2. The signal gating switch of claim 1, wherein the control port is coupled to one end of the diode in series with the first inductor, and wherein the control port is coupled to ground in series with the decoupling capacitor.
3. The signal gating switch of claim 1, wherein the common ground circuit comprises a resistor and a second inductor, the other end of the diode in each signal transmission circuit is connected to one end of the second inductor, and the other end of the second inductor is connected in series with the resistor and then grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920537544.XU CN209881758U (en) | 2019-04-19 | 2019-04-19 | Signal gating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920537544.XU CN209881758U (en) | 2019-04-19 | 2019-04-19 | Signal gating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209881758U true CN209881758U (en) | 2019-12-31 |
Family
ID=68960999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920537544.XU Active CN209881758U (en) | 2019-04-19 | 2019-04-19 | Signal gating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209881758U (en) |
-
2019
- 2019-04-19 CN CN201920537544.XU patent/CN209881758U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105049015A (en) | Single-pole single-throw radio-frequency switch as well as single-pole double-throw radio-frequency switch and single-pole multi-throw radio-frequency switch both formed by use of single-pole single-throw radio-frequency switch | |
| US20090184747A1 (en) | Switch circuit | |
| KR101594517B1 (en) | RF PIN-Diode Switch circuits for improving Isolation and Harmonics Distortion | |
| CN103812523A (en) | Switching circuit, radio frequency switching circuit and switching method thereof | |
| US4626806A (en) | RF isolation switch | |
| EP3127246B1 (en) | Radio frequency switching system | |
| CN209881758U (en) | Signal gating switch | |
| CN205017288U (en) | Single pole single throw RF switch and RF switch is thrown to single -pole double throw RF switch and hilted broadsword that constitute more thereof | |
| CN210508708U (en) | Matrix control circuit of electromagnetic lock | |
| CN204516879U (en) | A kind of mixer comprising three road VHF and a road UHF | |
| CN206135878U (en) | Compact switch matrix circuit | |
| JPH0832395A (en) | Variable attenuator | |
| CN212305286U (en) | DC-40GHz broadband PIN single-pole triple-throw switch | |
| CN115118242A (en) | Amplitude limiter | |
| CN212305285U (en) | DC-40GHz broadband PIN single-pole single-throw switch | |
| CN210297672U (en) | Switch drive circuit and electronic switch | |
| CN208723877U (en) | It is thrown and the difunctional changeable switch matrix circuit of power distribution with double-pole more | |
| CN104579236A (en) | Unsymmetrical microwave digital attenuator circuit and control method thereof | |
| CN114374379A (en) | Single-chip positive-voltage controlled low-control-voltage high-power-capacity single-pole double-throw switch | |
| CN204376853U (en) | A kind of asymmetrical Digital Microwave attenuator circuit | |
| US20200351219A1 (en) | Non-blocking switch matrix for multi-beam antenna | |
| CN207939492U (en) | A kind of radio-frequency switch module of high-power high-isolation low-insertion loss multichannel | |
| CN212518947U (en) | High-isolation low-insertion-loss switch circuit | |
| CN1288842C (en) | High-frequency signal switching | |
| CN214704379U (en) | Radio frequency electronic switch based on single chip microcomputer control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |