CN204794945U - High frequency switch circuit - Google Patents
High frequency switch circuit Download PDFInfo
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- CN204794945U CN204794945U CN201520463819.1U CN201520463819U CN204794945U CN 204794945 U CN204794945 U CN 204794945U CN 201520463819 U CN201520463819 U CN 201520463819U CN 204794945 U CN204794945 U CN 204794945U
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Abstract
The utility model discloses a high frequency switch circuit, including power source P1, radiofrequency signal input port J2, radiofrequency signal output port J1, radiofrequency signal output port J3, PIN diode D1 and PIN diode D2, the interface of power source P1 for having three pin, power source P1's the 1st pin ground connection, the output of one of them power is connected in power source P1's the 2nd pin and + 3V power and - the 3V power, the output of another power is connected in power source P1's the 3rd pin and + 3V power and - the 3V power, radiofrequency signal input port J2, radiofrequency signal output port J1 and radiofrequency signal output port J3 are five feet wiring port. The utility model discloses circuit structure is simple, and it is convenient and with low costs to realize, has great isolation, has lower insertion loss, and revealing of signal is little, switch fast, and the voltage standing wave ratio of each port is little, has extensive application prospect.
Description
Technical field
The utility model belongs to radio circuit technical field, is specifically related to a kind of high-frequency switch circuit.
Background technology
General transceiver, signal often needs transceiver toggle switch before entering into system by antenna, is separated by receiving and transmitting signal.Structure radio-frequency (RF) switch is now needed to switch between transmitting-receiving.When Received signal strength, antenna and inner low noise amplifier are coupled together.When transmitting, the output of power amplifier is received above antenna.Usually need switch to have larger isolation and lower insertion loss, the leakage of synchronous signal is little.Further, also requirement can bear larger power, and switching speed is fast, and the voltage standing wave ratio of each port is little.But, also lack in prior art and can be good at meeting these high-frequency switch circuits required.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, there is provided a kind of high-frequency switch circuit, its circuit structure is simple, reasonable in design, realization is convenient and cost is low, have larger isolation, have lower insertion loss, the leakage of signal is little, the speed of switch is fast, the voltage standing wave ratio of each port is little, practical, is with a wide range of applications.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of high-frequency switch circuit, it is characterized in that: comprise power interface P1, radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1, RF signal output mouth J3, PIN diode D1 and PIN diode D2, described power interface P1 is the interface with three pins, the 1st pin ground connection of described power interface P1, 2nd pin of described power interface P1 is connected with the output of one of them power supply in+3V power supply and-3V power supply, 3rd pin of described power interface P1 is connected with the output of another power supply in+3V power supply and-3V power supply, described radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1 and RF signal output mouth J3 is five pin Wiring ports, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are all connected with the 5th pin of radio-frequency (RF) signal input end mouth J2 by electric capacity C4, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are also by inductance L 3 and the resistance R1 ground connection of series connection, the anode of described PIN diode D1 is connected with the 5th pin of RF signal output mouth J1 by electric capacity C1, the anode of described PIN diode D1 is also connected with the 2nd pin of power interface P1 by inductance L 1, the anode of described PIN diode D2 is connected with the 5th pin of RF signal output mouth J3 by electric capacity C6, the anode of described PIN diode D2 is also connected with the 3rd pin of power interface P1 by inductance L 5.
Above-mentioned a kind of high-frequency switch circuit, is characterized in that: the inductance L 2 and the electric capacity C3 that are connected to series connection between the anode of described PIN diode D1 and negative electrode, is connected to inductance L 4 and the electric capacity C5 of series connection between the anode of described PIN diode D2 and negative electrode.
Above-mentioned a kind of high-frequency switch circuit, is characterized in that: the 2nd pin of described power interface P1 is also by electric capacity C2 ground connection, and the 3rd pin of described power interface P1 is also by electric capacity C7 ground connection.
Above-mentioned a kind of high-frequency switch circuit, is characterized in that: the model of described PIN diode D1 and PIN diode D2 is HVC131.
The utility model compared with prior art has the following advantages:
1, circuit structure of the present utility model is simple, reasonable in design, and realization is convenient and cost is low.
2, the utility model has larger isolation, and has lower insertion loss.
3, the leakage of the utility model signal is little, and the speed of switch is fast, and the voltage standing wave ratio of each port is little.
4, the utility model is the important foundation module of modern various types of communication and test macro, and practical, result of use is good, is with a wide range of applications.
In sum, the utility model circuit structure is simple, reasonable in design, and realization is convenient and cost is low, have larger isolation, have lower insertion loss, the leakage of signal is little, and the speed of switch is fast, the voltage standing wave ratio of each port is little, practical, is with a wide range of applications.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises power interface P1, radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1, RF signal output mouth J3, PIN diode D1 and PIN diode D2, described power interface P1 is the interface with three pins, the 1st pin ground connection of described power interface P1,2nd pin of described power interface P1 is connected with the output of one of them power supply in+3V power supply and-3V power supply, and the 3rd pin of described power interface P1 is connected with the output of another power supply in+3V power supply and-3V power supply, described radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1 and RF signal output mouth J3 is five pin Wiring ports, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are all connected with the 5th pin of radio-frequency (RF) signal input end mouth J2 by electric capacity C4, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are also by inductance L 3 and the resistance R1 ground connection of series connection, the anode of described PIN diode D1 is connected with the 5th pin of RF signal output mouth J1 by electric capacity C1, the anode of described PIN diode D1 is also connected with the 2nd pin of power interface P1 by inductance L 1, the anode of described PIN diode D2 is connected with the 5th pin of RF signal output mouth J3 by electric capacity C6, the anode of described PIN diode D2 is also connected with the 3rd pin of power interface P1 by inductance L 5.During concrete wiring, 1st pin of described radio-frequency (RF) signal input end mouth J2, the 2nd pin, the 3rd pin and the equal ground connection of the 4th pin, 1st pin of described RF signal output mouth J1, the 2nd pin, the 3rd pin and the equal ground connection of the 4th pin, the 1st pin of described RF signal output mouth J3, the 2nd pin, the 3rd pin and the equal ground connection of the 4th pin.
As shown in Figure 1, in the present embodiment, between the anode of described PIN diode D1 and negative electrode, be connected to inductance L 2 and the electric capacity C3 of series connection, between the anode of described PIN diode D2 and negative electrode, be connected to inductance L 4 and the electric capacity C5 of series connection.
As shown in Figure 1, in the present embodiment, the 2nd pin of described power interface P1 is also by electric capacity C2 ground connection, and the 3rd pin of described power interface P1 is also by electric capacity C7 ground connection.
As shown in Figure 1, in the present embodiment, the model of described PIN diode D1 and PIN diode D2 is HVC131.
When the utility model uses, when the 2nd pin of described power interface P1 is connected with the output of+3V power supply, when 3rd pin of described power interface P1 is connected with the output of-3V power supply, now PIN diode D1 conducting, the radiofrequency signal inputted from radio-frequency (RF) signal input end mouth J2 exports from RF signal output mouth J1; When the 2nd pin of described power interface P1 is connected with the output of-3V power supply, when 3rd pin of described power interface P1 is connected with the output of+3V power supply, now PIN diode D2 conducting, the radiofrequency signal inputted from radio-frequency (RF) signal input end mouth J2 exports from RF signal output mouth J3.
In sum, the utility model adopts two PIN diode and in conjunction with its peripheral circuit, constitute a kind of high frequency single-pole double throw (SinglePoleDoubleThrow, SPDT) switching circuit, have larger isolation, and have lower insertion loss, the leakage of synchronous signal is little, and the speed of switch is fast, the voltage standing wave ratio of each port is little.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection range of technical solutions of the utility model.
Claims (4)
1. a high-frequency switch circuit, it is characterized in that: comprise power interface P1, radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1, RF signal output mouth J3, PIN diode D1 and PIN diode D2, described power interface P1 is the interface with three pins, the 1st pin ground connection of described power interface P1,2nd pin of described power interface P1 is connected with the output of one of them power supply in+3V power supply and-3V power supply, and the 3rd pin of described power interface P1 is connected with the output of another power supply in+3V power supply and-3V power supply, described radio-frequency (RF) signal input end mouth J2, RF signal output mouth J1 and RF signal output mouth J3 is five pin Wiring ports, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are all connected with the 5th pin of radio-frequency (RF) signal input end mouth J2 by electric capacity C4, the negative electrode of described PIN diode D1 and the negative electrode of PIN diode D2 are also by inductance L 3 and the resistance R1 ground connection of series connection, the anode of described PIN diode D1 is connected with the 5th pin of RF signal output mouth J1 by electric capacity C1, the anode of described PIN diode D1 is also connected with the 2nd pin of power interface P1 by inductance L 1, the anode of described PIN diode D2 is connected with the 5th pin of RF signal output mouth J3 by electric capacity C6, the anode of described PIN diode D2 is also connected with the 3rd pin of power interface P1 by inductance L 5.
2. according to a kind of high-frequency switch circuit according to claim 1, it is characterized in that: the inductance L 2 and the electric capacity C3 that are connected to series connection between the anode of described PIN diode D1 and negative electrode, between the anode of described PIN diode D2 and negative electrode, be connected to inductance L 4 and the electric capacity C5 of series connection.
3. according to a kind of high-frequency switch circuit according to claim 1, it is characterized in that: the 2nd pin of described power interface P1 is also by electric capacity C2 ground connection, and the 3rd pin of described power interface P1 is also by electric capacity C7 ground connection.
4. according to a kind of high-frequency switch circuit according to claim 1, it is characterized in that: the model of described PIN diode D1 and PIN diode D2 is HVC131.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463819.1U CN204794945U (en) | 2015-06-27 | 2015-06-27 | High frequency switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463819.1U CN204794945U (en) | 2015-06-27 | 2015-06-27 | High frequency switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794945U true CN204794945U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520463819.1U Expired - Fee Related CN204794945U (en) | 2015-06-27 | 2015-06-27 | High frequency switch circuit |
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| Country | Link |
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| CN (1) | CN204794945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342760A (en) * | 2017-06-29 | 2017-11-10 | 宇龙计算机通信科技(深圳)有限公司 | A kind of high-isolation radio-frequency switch circuit |
-
2015
- 2015-06-27 CN CN201520463819.1U patent/CN204794945U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342760A (en) * | 2017-06-29 | 2017-11-10 | 宇龙计算机通信科技(深圳)有限公司 | A kind of high-isolation radio-frequency switch circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160627 |