CN204669331U - The drive circuit of PIN diode and monopole single throw microwave switch - Google Patents
The drive circuit of PIN diode and monopole single throw microwave switch Download PDFInfo
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- CN204669331U CN204669331U CN201520491646.4U CN201520491646U CN204669331U CN 204669331 U CN204669331 U CN 204669331U CN 201520491646 U CN201520491646 U CN 201520491646U CN 204669331 U CN204669331 U CN 204669331U
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Abstract
The drive circuit of PIN diode and a monopole single throw microwave switch, the drive circuit of described PIN diode comprises driver element, the first electric capacity and the second electric capacity.First power end of described driver element connects one end of described first electric capacity and is suitable for receiving positive voltage, the second source end of described driver element connects one end of described second electric capacity and is suitable for receiving negative supply voltage, and the output of described driver element is suitable for output drive signal; The other end of described first electric capacity and the other end ground connection of described second electric capacity.The drive circuit of the PIN diode that the utility model provides and monopole single throw microwave switch, shorten the switching time of PIN diode, improves the switching speed of monopole single throw microwave switch.
Description
Technical field
The utility model relates to microwave technical field, particularly a kind of drive circuit of PIN diode and monopole single throw microwave switch.
Background technology
PIN diode is a variable impedance device controlled by bias current at radio frequency and microwave frequency band, and its structure has three layers, in the middle of the P knot and N knot of silicon semiconductor diode, be namely mingled with the eigen I layer of high value.Under forward current is biased, hole and electronics are injected into I layer, and these electric charges can not be cancelled out each other at once and disappear, but can there is the regular hour, and this timing definition is carrier lifetime.Such I layer will produce and store certain electric charge, and these electric charges make the effective impedance of I layer reduce.When PIN diode be in zero inclined or reverse-biased time, I layer can not stored charge, and PIN diode shows as Capacitance parallel connection resistance.
Fig. 1 is the driving circuit structure schematic diagram of common a kind of PIN diode, and described drive circuit comprises driver element 10, and described driver element 10 comprises the first power end, second source end and output.Particularly, first power end of described driver element 10 is suitable for receiving positive voltage VCC, the second source end of described driver element 10 is suitable for receiving negative supply voltage VEE, the output of described driver element 10 is suitable for output drive signal, described drive singal is suitable for driving PIN diode D10, namely the output of described driver element 10 connects the anode of described PIN diode D10, the minus earth of described PIN diode D10.Described driver element 10 can be inverter, and such as CMOS inverter etc., do not repeat them here.When described drive singal is described positive voltage VCC, described PIN diode D10 positively biased, presents conducting state; When described drive singal is described negative supply voltage VEE, described PIN diode D10 is reverse-biased, presents cut-off state.
When PIN diode uses as switch, be applied in high-power equipment more.Along with the requirement of high-power equipment to speed improves constantly, PIN diode is needed to have switching speed faster.For the circuit structure shown in Fig. 1, the switching speed of described PIN diode D10 depends primarily on three factors: one is the drive current size of described driver element 10; Two is drive current switch speeds of described driver element 10; Three load capacity being to provide the power supply of described positive voltage VCC and described negative supply voltage VEE.Because the load capacity of the power supply providing described positive voltage VCC and described negative supply voltage VEE is limited, the drive current of described driver element 10 also limits by circuit, cause the switching time of described PIN diode D10 longer, higher switching requirements cannot be met.
Utility model content
To be solved in the utility model is long problem switching time of PIN diode.
For solving the problem, the utility model provides a kind of drive circuit of PIN diode, comprises driver element, the first electric capacity and the second electric capacity;
First power end of described driver element connects one end of described first electric capacity and is suitable for receiving positive voltage, the second source end of described driver element connects one end of described second electric capacity and is suitable for receiving negative supply voltage, and the output of described driver element is suitable for output drive signal;
The other end of described first electric capacity and the other end ground connection of described second electric capacity.
Optionally, the equivalent resistance of described first electric capacity and the equivalent resistance of described second electric capacity are not more than 0.1 ohm.
Optionally, described driver element is CMOS inverter.
Based on the drive circuit of above-mentioned PIN diode, the utility model also provides a kind of monopole single throw microwave switch, comprises the drive circuit of microwave input port, microwave output, low pass filter, the first PIN diode, the 3rd electric capacity, the 4th electric capacity and above-mentioned PIN diode;
The input of described low pass filter connects the output of described driver element, and the output of described low pass filter connects one end of described 3rd electric capacity, one end of described 4th electric capacity and the anode of described first PIN diode;
The other end of described 3rd electric capacity connects described microwave input port, and the other end of described 4th electric capacity connects described microwave output, the minus earth of described first PIN diode.
Optionally, described low pass filter comprises inductance and the 5th electric capacity;
One end of described inductance connects one end of described 5th electric capacity and as the input of described low pass filter, the other end of described inductance is as the output of described low pass filter;
The other end ground connection of described 5th electric capacity.
Optionally, the second PIN diode is also comprised;
The anode of described second PIN diode connects the output of described low pass filter, one end of described 3rd electric capacity, one end of described 4th electric capacity and the anode of described first PIN diode, the minus earth of described second PIN diode.
Compared with prior art, the utility model has the following advantages:
The drive circuit of the PIN diode that the utility model provides, comprises driver element, the first electric capacity and the second electric capacity, and described first Capacitance parallel connection is at the first power end of described driver element, and described second Capacitance parallel connection is at the second source end of described driver element.When driving PIN diode, described first electric capacity and described second electric capacity alternating discharge, accelerate the carrier mobility speed in PIN diode, thus shorten the switching time of PIN diode, reduce the dependence of switching time to the drive current of driver element and the load capacity of power supply of PIN diode.
The monopole single throw microwave switch that the utility model provides, by arranging the first electric capacity and the second electric capacity in the drive circuit of PIN diode, shortens the switching time of PIN diode, thus improves the switching speed of monopole single throw microwave switch.
In possibility of the present utility model, described monopole single throw microwave switch comprises the first PIN diode and the second PIN diode, adds the isolation of described monopole single throw microwave switch.
Accompanying drawing explanation
Fig. 1 is the structural representation of the drive circuit of existing a kind of PIN diode;
Fig. 2 is the structural representation of the drive circuit of the PIN diode of the utility model embodiment;
Fig. 3 is the structural representation of a kind of monopole single throw microwave switch of the utility model embodiment;
Fig. 4 is the structural representation of the another kind of monopole single throw microwave switch of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
Fig. 2 is the structural representation of the drive circuit of the PIN diode of the utility model embodiment, and the drive circuit of described PIN diode comprises driver element 20, first electric capacity C21 and the second electric capacity C22.Particularly, described driver element 20 comprises the first power end, second source end and output.First power end of described driver element 20 connects one end of described first electric capacity C21 and is suitable for receiving positive voltage VCC, the second source end of described driver element 20 connects one end of described second electric capacity C22 and is suitable for receiving negative supply voltage VEE, and the output of described driver element 20 is suitable for output drive signal.It should be noted that, the physical circuit of described driver element 20 is identical with prior art with operation principle, can be such as the circuit such as CMOS inverter, described positive voltage VCC and described negative supply voltage VEE can be provided by direct voltage source, the concrete magnitude of voltage provided can be arranged according to the actual requirements, does not repeat them here.Further, the other end of described first electric capacity C21 and the other end ground connection of described second electric capacity C22.Described first electric capacity C21 and described second electric capacity C22 can for having the electric capacity of low equivalent resistance, high energy storage capacity.In the present embodiment, the equivalent resistance of described first electric capacity C21 and the equivalent resistance of described second electric capacity C22 are not more than 0.1 ohm.
For illustrating the drive circuit effect of the PIN diode of the present embodiment better, below for the operation principle driving PIN diode D20 that the drive circuit of described PIN diode is described.The anode of described PIN diode D20 is suitable for receiving described drive singal, and namely the anode of described PIN diode D20 connects the output of described driver element 20, the minus earth of described PIN diode D20.
When described drive singal is switched to described negative supply voltage VEE by described positive voltage VCC, described PIN diode D20 is switched to cut-off state by conducting state.In stateful switchover process, described PIN diode D20 needs to extract a large amount of electronics from P pole, and the electronics of extraction provides primarily of providing the power supply of described negative supply voltage VEE.The electronics that power supply provides is more, and described PIN diode D20 turns off faster.In the present embodiment, when described PIN diode D20 is switched to cut-off state by conducting state, except the power supply of described negative supply voltage VEE being provided electronics is provided, described second electric capacity C22 also carries out discharging to provide electronics to described PIN diode D20, thus improves the turn-off speed of described PIN diode D20.
When described drive singal is switched to described positive voltage VCC by described negative supply voltage VEE, described PIN diode D20 is switched to conducting state by cut-off state.In stateful switchover process, owing to providing the power source loads of described positive voltage VCC limited in one's ability, there will be load capacity deficiency when load current step changes makes described positive voltage VCC draw inclined phenomenon, affects the carrier mobility in described PIN diode D20.In the present embodiment, when described PIN diode D20 is switched to conducting state by cut-off state, except the power supply of described positive voltage VCC being provided electronics is provided, described first electric capacity C21 also carries out discharging to provide electronics to described PIN diode D20, thus improves the conducting speed of described PIN diode D20.
Based on the drive circuit of described PIN diode, the utility model embodiment also provides a kind of monopole single throw microwave switch.With reference to the circuit structure shown in figure 3, described monopole single throw microwave switch comprises the drive circuit of PIN diode, microwave input port P31, microwave output P32, low pass filter 31, first PIN diode D30, the 3rd electric capacity C33 and the 4th electric capacity C34.Wherein, the drive circuit of described PIN diode comprises driver element 30, first electric capacity C31 and the second electric capacity C32.The concrete structure of the drive circuit of described PIN diode and operation principle with reference to the description to Fig. 2, can not repeat them here.
Particularly, described low pass filter 31 comprises input and output.The input of described low pass filter 31 connects the output of described driver element 30, namely the input of described low pass filter 31 is suitable for the drive singal receiving the output of described driver element 30, and the output of described low pass filter 31 connects one end of described 3rd electric capacity C33, one end of described 4th electric capacity C34 and the anode of described first PIN diode D30; The other end of described 3rd electric capacity C33 connects described microwave input port P31, and the other end of described 4th electric capacity C34 connects described microwave output P32, the minus earth of described first PIN diode D30.
In the present embodiment, described low pass filter 31 is suitable for carrying out low-pass filtering to described drive singal, and described 3rd electric capacity C33 and described 4th electric capacity C34 is capacitance.When described drive singal is described positive voltage VCC, described first PIN diode D30 conducting, described monopole single throw microwave switch is in off-state, and microwave signal cannot transfer to described microwave output P32 from described microwave input port P31; When described drive singal is described negative supply voltage VEE, described first PIN diode D30 cut-off, described monopole single throw microwave switch is in conducting state, and microwave signal transfers to described microwave output P32 from described microwave input port P31.
The monopole single throw microwave switch that the present embodiment provides, by arranging described first electric capacity C31 and described second electric capacity C32 at the power end of described driver element 30, shorten the switching time of described first PIN diode D30, thus improve the switching speed of described monopole single throw microwave switch.
Further, in the present embodiment, described low pass filter 31 comprises inductance L 30 and the 5th electric capacity C35, and described inductance L 30 is choke induction.Particularly, one end of described inductance L 30 connect described 5th electric capacity C35 one end and as the input of described low pass filter 31, namely one end of described inductance L 30 connects described one end of 5th electric capacity C35 and the output of described driver element 30, and the other end of described inductance L 30 is as the output of described low pass filter 31; The other end ground connection of described 5th electric capacity C35.It should be noted that, described low pass filter 31 also can be the low pass filter of other circuit forms, and the utility model does not limit this.
The utility model embodiment also provides another kind of monopole single throw microwave switch, and circuit structure as shown in Figure 4.Described monopole single throw microwave switch comprises the drive circuit of PIN diode, microwave input port P41, microwave output P42, low pass filter 41, first PIN diode D40, the 3rd electric capacity C43, the 4th electric capacity C44 and the second PIN diode D41.Wherein, the drive circuit of described PIN diode comprises driver element 40, first electric capacity C41 and the second electric capacity C42, and described low pass filter 41 comprises inductance L 40 and the 5th electric capacity C45.Concrete syndeton and Fig. 3 of the drive circuit of described PIN diode, described microwave input port P41, described microwave output P42, described low pass filter 41, described first PIN diode D40, described 3rd electric capacity C43 and described 4th electric capacity C44 are similar, do not repeat them here.
The anode of described second PIN diode D41 connects the output of described low pass filter 41, one end of described 3rd electric capacity C43, one end of described 4th electric capacity C44 and the anode of described first PIN diode D40, the minus earth of described second PIN diode D41.Compared with the embodiment that Fig. 3 is corresponding, the monopole single throw microwave switch of the present embodiment comprises two PIN diode, adds the isolation of described monopole single throw microwave switch.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (6)
1. a drive circuit for PIN diode, is characterized in that, comprises driver element, the first electric capacity and the second electric capacity;
First power end of described driver element connects one end of described first electric capacity and is suitable for receiving positive voltage, the second source end of described driver element connects one end of described second electric capacity and is suitable for receiving negative supply voltage, and the output of described driver element is suitable for output drive signal;
The other end of described first electric capacity and the other end ground connection of described second electric capacity.
2. the drive circuit of PIN diode according to claim 1, is characterized in that, the equivalent resistance of described first electric capacity and the equivalent resistance of described second electric capacity are not more than 0.1 ohm.
3. the drive circuit of PIN diode according to claim 1, is characterized in that, described driver element is CMOS inverter.
4. a monopole single throw microwave switch, is characterized in that, comprises the drive circuit of microwave input port, microwave output, low pass filter, the first PIN diode, the 3rd electric capacity, the 4th electric capacity and the PIN diode described in any one of claims 1 to 3;
The input of described low pass filter connects the output of described driver element, and the output of described low pass filter connects one end of described 3rd electric capacity, one end of described 4th electric capacity and the anode of described first PIN diode;
The other end of described 3rd electric capacity connects described microwave input port, and the other end of described 4th electric capacity connects described microwave output, the minus earth of described first PIN diode.
5. monopole single throw microwave switch according to claim 4, is characterized in that, described low pass filter comprises inductance and the 5th electric capacity;
One end of described inductance connects one end of described 5th electric capacity and as the input of described low pass filter, the other end of described inductance is as the output of described low pass filter;
The other end ground connection of described 5th electric capacity.
6. the monopole single throw microwave switch according to claim 4 or 5, is characterized in that, also comprises the second PIN diode;
The anode of described second PIN diode connects the output of described low pass filter, one end of described 3rd electric capacity, one end of described 4th electric capacity and the anode of described first PIN diode, the minus earth of described second PIN diode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520491646.4U CN204669331U (en) | 2015-07-09 | 2015-07-09 | The drive circuit of PIN diode and monopole single throw microwave switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520491646.4U CN204669331U (en) | 2015-07-09 | 2015-07-09 | The drive circuit of PIN diode and monopole single throw microwave switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025450A (en) * | 2016-07-10 | 2016-10-12 | 北京遥感设备研究所 | Ka-band high isolation PIN switch assembly |
| CN110138394A (en) * | 2019-06-28 | 2019-08-16 | 京信通信系统（中国）有限公司 | A kind of signal receiving/transmission device and terminal |
| CN111865284A (en) * | 2020-07-02 | 2020-10-30 | 中国电子科技集团公司第三十六研究所 | Single-pole multi-throw PIN tube switch circuit |
-
2015
- 2015-07-09 CN CN201520491646.4U patent/CN204669331U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025450A (en) * | 2016-07-10 | 2016-10-12 | 北京遥感设备研究所 | Ka-band high isolation PIN switch assembly |
| CN106025450B (en) * | 2016-07-10 | 2019-02-19 | 北京遥感设备研究所 | A kind of Ka wave band high isolation PIN switch block |
| CN110138394A (en) * | 2019-06-28 | 2019-08-16 | 京信通信系统（中国）有限公司 | A kind of signal receiving/transmission device and terminal |
| CN111865284A (en) * | 2020-07-02 | 2020-10-30 | 中国电子科技集团公司第三十六研究所 | Single-pole multi-throw PIN tube switch circuit |
| CN111865284B (en) * | 2020-07-02 | 2024-03-22 | 中国电子科技集团公司第三十六研究所 | Single-pole multi-throw PIN tube switching circuit |
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