CN206686156U - A kind of novel absorption microwave switch - Google Patents
A kind of novel absorption microwave switch Download PDFInfo
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- CN206686156U CN206686156U CN201720491500.9U CN201720491500U CN206686156U CN 206686156 U CN206686156 U CN 206686156U CN 201720491500 U CN201720491500 U CN 201720491500U CN 206686156 U CN206686156 U CN 206686156U
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- pin diode
- novel absorption
- microwave switch
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000005669 field effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940085942 formulation r Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model discloses a kind of novel absorption microwave switch, it is related to microwave switch field, the novel absorption microwave switch includes：Microwave circuit and control circuit, the adjustable current-limiting resistance of resistance is provided with control circuit, the signal input part of the first end connection novel absorption microwave switch of microwave circuit, the signal output part of the second end connection novel absorption microwave switch of microwave circuit, 3rd end of one end connection microwave circuit of control circuit, the other end connect the 4th end of microwave circuit；The novel absorption microwave switch can be while the shut-off standing wave of microwave switch be optimized, insertion loss caused by reduction, and makes debugging more convenient.
Description
Technical field
Microwave switch field is the utility model is related to, especially a kind of novel absorption microwave switch.
Background technology
Microwave switch is a kind of common microwave circuit, and it is used for the function of realizing control microwave signal channels conversion, quilt
It is widely used in various microwave equipments.
Microwave switch is divided into FET (Field Effect Transistor, field-effect transistor) from component composition and opened
Pass and the class of pin diode switch two, wherein pin diode switch is widely used because of the advantages of its insertion loss is relatively low, micro-
Ripple switch can functionally be divided into reflection type microwave switch and absorptive microwave switch again.With the PIN diode of series parallel structure
Exemplified by microwave switch, when the microwave switch is that reflection type microwave switchs, its circuit diagram can be with as shown in figure 1, the microwave switch
Including microwave circuit and control circuit, the input of microwave circuit is signal input part RF1, and the output end of microwave circuit is signal
Output end RF2, the three-terminal link control circuit of microwave circuit, the other end connection bias voltage Vc of control circuit, its work
Principle is：When bias voltage Vc is negative voltage (being usually -5V), series connected PIN diodes V1 conductings, series impedance is minimum, 4
PIN diode V2 is turned off, very big to ground impedance so that the microwave between signal input part RF1 and signal output part RF2
Link turns on, and microwave signal can pass through；When bias voltage Vc is positive voltage (being usually+5V), series connected PIN diodes
V1 end, series impedance is very big, and 4 PIN diode V2 are both turned on, minimum to ground impedance so that signal input part RF1 with
Microwave link between signal output part RF2 is turned off, microwave signal total reflection.But reflection type microwave switch-off standing wave
It is poor, in order to improve this shortcoming, it is absorbed formula by increase absorbing circuit in the microwave circuit that is switched in reflection type microwave
Microwave switch, its circuit diagram can be with as shown in Fig. 2 it be reflective that comparison diagram 2 and Fig. 1, which can be seen that absorptive microwave switch,
A series connected PIN diodes V1 is further added by the circuit of microwave switch, it is then in parallel one 50 on series connected PIN diodes V1
Ω resistance is obtained to form extra absorbing circuit, when microwave link turns off, the poles of series connection PIN bis- in absorbing circuit
Pipe V1 impedance Rv1Greatly, according to the equivalent formulation R of Ohm's law parallel resistanceAbsorb=Rv1*50/(Rv1+ 50) can determine that now
The impedance of absorbing circuit is about 50 Ω, just the impedance matching with signal output part RF2, realizes absorption function.But so change
The absorptive microwave switch for entering to obtain, can be because add series connection PIN while shut-off standing wave is optimized in microwave circuit
Diode and resistance and cause new insertion loss, big appointment causes the even more big insertion loss of extra 0.4dB, in addition, by
Generally require to change adjustment in the paster type resistor in engineering and in the absence of nominal value being just 50 Ω, therefore during actual debugging
The resistance of resistance in absorbing circuit, because the resistance is located in microwave circuit, require larger to assembly technology and change to debug
It is more difficult.
Utility model content
The present inventor is regarding to the issue above and technical need, it is proposed that a kind of novel absorption microwave switch, the new suction
Insertion loss can be reduced while optimization turns off standing wave by receiving type micro-wave switch, while make circuit be easy to debug.
The technical solution of the utility model is as follows：
A kind of novel absorption microwave switch, the novel absorption microwave switch include：Microwave circuit and control circuit, control
The adjustable current-limiting resistance of resistance, the signal of the first end connection novel absorption microwave switch of microwave circuit are provided with circuit processed
Input, the signal output part of the second end connection novel absorption microwave switch of microwave circuit, one end connection of control circuit
3rd end of microwave circuit, the other end connect the 4th end of microwave circuit.
Its further technical scheme is that microwave circuit includes operating circuit and absorbing circuit, the first end of operating circuit
Connect signal input part, the input of the second end connection absorbing circuit of operating circuit, the output end connection signal of absorbing circuit
Output end, the 3rd end of operating circuit are the 3rd end of microwave circuit, and the common point of operating circuit and absorbing circuit is microwave electricity
4th end on road, current-limiting resistance are used to adjust the impedance of absorbing circuit and the impedance matching of signal output part.
Its further technical scheme is that operating circuit includes the first PIN diode and the first electric capacity being sequentially connected in series, the
The first end of the positive pole connection operating circuit of one PIN diode, the negative pole of the first PIN diode connect one end of the first electric capacity,
The common point of second end of the other end connection operating circuit of the first electric capacity, the first PIN diode and the first electric capacity is work electricity
3rd end on road；The one end of the positive pole of first PIN diode also with the first inductance is connected, the other end ground connection of the first inductance, the
The second PIN diode, the 3rd PIN diode, the 4th PIN are parallel between the negative pole of one PIN diode and the first electric capacity successively
Diode and the 5th PIN diode, the second PIN diode, the 3rd PIN diode, the 4th PIN diode and the poles of the 5th PIN bis-
The negative pole of pipe is grounded respectively.
Its further technical scheme is, absorbing circuit includes the second electric capacity and the 6th PIN diode, the one of the second electric capacity
The input of end connection absorbing circuit and the positive pole of the 6th PIN diode, the other end of the second electric capacity connect the defeated of absorbing circuit
Go out end, the negative pole ground connection of the 6th PIN diode.
Its further technical scheme is that control circuit includes the second inductance, biasing resistor, the current-limiting resistance being sequentially connected in series
With the 3rd inductance, the 3rd end of the first end connection microwave circuit of the series circuit, the other end connects the 4th end of microwave circuit,
Be parallel with the first filter capacitor between second inductance and biasing resistor, the other end ground connection of the first filter capacitor, current-limiting resistance and
It is parallel with the second filter capacitor between 3rd inductance, the other end ground connection of the second filter capacitor, biasing resistor and current-limiting resistance
Common point connects bias voltage.
Advantageous effects of the present utility model are：
1st, novel absorption microwave switch disclosed in the utility model is on the basis of reflection type microwave switch, extra series connection
The capacitance of one high quality factor, the feed inductance of a high impedance high quality factor in parallel, and it is extra in parallel
To ground, the insertion loss caused by PIN diode is less than series connected PIN diodes, increased simultaneously one PIN diode
Capacitance and feed inductance caused by insertion loss it is also very little, therefore the novel absorption microwave switch can be excellent
Insertion loss caused by being reduced while changing reflection type microwave switch-off standing wave.
2nd, resistance is not increased in microwave circuit in the utility model so that microwave circuit has obtained appropriate simplification,
Assembly technology requirement is also no longer harsh, and that need to change during debugging is current-limiting resistance R, because the resistance is arranged on control circuit
It is not in microwave circuit, can be changed in a manner of manual welding from SMD resistance, operation facility, therefore debug and become
Obtain more convenient.
Brief description of the drawings
Fig. 1 is the circuit diagram of reflection type microwave switch of the prior art.
Fig. 2 is the circuit diagram of absorptive microwave switch of the prior art.
Fig. 3 is the circuit diagram of novel absorption microwave switch disclosed in the utility model.
Fig. 4 is the circuit diagram of novel absorption microwave switch disclosed in the utility model.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Fig. 3 is refer to, it illustrates the circuit diagram of novel absorption microwave switch disclosed in the utility model, and this is new
Type absorptive microwave on-off circuit includes microwave circuit and control circuit, and the adjustable current limliting electricity of resistance is provided with control circuit
Resistance.The signal input part RF1 of the first end connection novel absorption microwave switch of microwave circuit, the second end connection of microwave circuit
The signal output part RF2 of novel absorption microwave switch, the 3rd end of the first end connection microwave circuit of control circuit, the second end
Connect the 4th end of microwave circuit, three-terminal link bias voltage Vc.
Wherein, microwave circuit includes operating circuit and absorbing circuit, the first end connection signal input part of operating circuit
RF1, the input of the second end connection absorbing circuit of operating circuit, the output end connection signal output part RF2 of absorbing circuit, work
The 3rd end for making circuit is the 3rd end of microwave circuit, and the common point of operating circuit and absorbing circuit is the 4th of microwave circuit the
Hold, the current-limiting resistance in control circuit is used for impedance matching of the impedance with signal output part RF2 for adjusting absorbing circuit, with this reality
Existing absorption function.
It is related to specific circuit structure, the utility model there can be numerous embodiments, typical real with one below
Example is applied to illustrate particular circuit configurations and operation principle of the present utility model, the utility model is to each component in circuit
Parameter is not construed as limiting, and circuit diagram refer to Fig. 4.
Operating circuit includes the first PIN diode D1 and the first electric capacity C1 being sequentially connected in series, and the first PIN diode D1 is just
Pole connects the first end of operating circuit, and the first PIN diode D1 negative pole connects the first electric capacity C1 one end, the first electric capacity C1's
The other end connects the second end of operating circuit, and the first PIN diode D1 and the first electric capacity C1 common point is the of operating circuit
Three ends, for connecting the first end of control circuit；The one end of first PIN diode D1 positive pole also with the first inductance L1 is connected,
First inductance L1 other end ground connection, the 2nd PIN is parallel between the first PIN diode D1 negative pole and the first electric capacity C1 successively
Diode D2, the 3rd PIN diode D3, the 4th PIN diode D4 and the 5th PIN diode D5, the second PIN diode D2,
Three PIN diode D3, the 4th PIN diode D4 and the 5th PIN diode D5 negative pole are grounded respectively.
Absorbing circuit includes the second electric capacity C2 and the 6th PIN diode D6, and the second electric capacity C2 is that a quality factor is higher
Capacitance, the second electric capacity C2 one end connection absorbing circuit input and the 6th PIN diode D6 positive pole, second electricity
Hold the output end of C2 other end connection absorbing circuit, the 6th PIN diode D6 negative pole ground connection.That is, as shown in figure 4,
In whole microwave circuit, the first PIN diode D1, the first electric capacity C1 and the second electric capacity C2 are sequentially connected in series, while in the first PIN bis-
4 PIN diodes are parallel between pole pipe D1 and the first electric capacity C1, one is parallel between the first electric capacity C1 and the second electric capacity C2
Individual PIN diode.
Control circuit includes the second inductance L2, biasing resistor R0, current-limiting resistance R and the 3rd inductance L3 being sequentially connected in series, the
Three inductance L3 impedance and quality factor are higher, and the 3rd inductance L3 is used to be fed.The first end connection of the series circuit
3rd end of microwave circuit, the other end connect the 4th end of microwave circuit, are parallel between the second inductance L2 and biasing resistor R0
First filter capacitor C3, the first filter capacitor C3 other end ground connection, second is parallel between current-limiting resistance R and the 3rd inductance L3
Filter capacitor C4, the second filter capacitor C4 other end ground connection, biasing resistor R0 connect biased electrical with current-limiting resistance R common point
Press Vc.
The operation principle of the novel absorption microwave switch is：
Bias voltage Vc is connected in series to ground by current-limiting resistance R, the 3rd inductance L3 and the 6th PIN diode D6, it is assumed that passes through
Current-limiting resistance R and the 6th PIN diode D6 electric current are I, it is assumed that the 6th PIN diode D6 impedance is RD6, then bias voltage
Vc=I* (R+RD6), when can determine that resistance is 50 Ω according to the relation curve of the 6th PIN diode D6 resistance and electric current pair
The current value size I answered0, the relation curve can find in the 6th PIN diode D6 device handbook.It is hereby achieved that
Current-limiting resistance R=Vc/I0- 50, general R resistance is very big, reaches k Ω ranks.When bias voltage Vc be negative voltage (be usually-
When 5V), the first PIN diode D1 conductings, its minimum impedance is almost 0, all PIN diode (bags in parallel in microwave circuit
Include the second PIN diode D2, the 3rd PIN diode D3, the 4th PIN diode D4, the 5th PIN diode D5 and the 6th PIN bis-
Pole pipe D6) it is turned off, impedance is very big so that whole microwave link conducting；When bias voltage Vc is positive voltage (being usually+5V)
When, the first PIN diode D1 cut-offs, its impedance is very big, 4 of operating circuit PIN diodes in parallel (including the 2nd PIN bis-
Pole pipe D2, the 3rd PIN diode D3, the 4th PIN diode D4 and the 5th PIN diode D5) conducting, minimum impedance is almost 0,
So that microwave link turns off, and when microwave link turns off, because current-limiting resistance R resistance is very big, I0It is minimum so that absorbing circuit
In the 6th PIN diode D6 present lightly conducting state, the now impedance of absorbing circuit is just 50 Ω, with signal output part
RF2 matches impedances, realize absorption function.
It is in reflection type microwave that comparison diagram 4 and Fig. 1, which can be seen that novel absorption microwave switch disclosed in the utility model,
The capacitance (the second electric capacity C2) of a high quality factor of additionally having been connected on the basis of switch, a high impedance height in parallel
The feed inductance (the 3rd inductance L3) of quality factor, and an extra PIN diode (the 6th PIN diode D6) in parallel are arrived
Ground, compared to the absorptive microwave switch shown in Fig. 2, PIN diode in parallel is compared to caused by the PIN diode of series connection
Insertion loss is smaller, the insertion loss caused by the feed inductance of high value high quality factor and the capacitance of high quality factor
Minimum to can be ignored, experimental data shows increased absorption electricity in novel absorption microwave switch disclosed in the utility model
Extra insertion loss caused by road is 0.2dB, less than the 0.4dB in the conventional absorptive microwave switch shown in Fig. 2.Together
When, do not increase resistance in microwave circuit in the utility model so that microwave circuit has obtained appropriate simplification, assembly technology
That need to change it is required that also no longer harsh, during debugging is current-limiting resistance R, because the resistance is arranged on control circuit rather than microwave
In circuit, it can be changed in a manner of manual welding from SMD resistance, operation facility, therefore debugging becomes more just
Profit.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
To understand, what those skilled in the art directly exported or associated on the premise of spirit of the present utility model and design is not departed from
Oher improvements and changes, it is considered as being included within the scope of protection of the utility model.
Claims (5)
1. a kind of novel absorption microwave switch, it is characterised in that the novel absorption microwave switch includes：Microwave circuit and
Control circuit, is provided with the adjustable current-limiting resistance of resistance in the control circuit, described in the first end connection of the microwave circuit
The signal input part of novel absorption microwave switch, the second end of the microwave circuit connect the novel absorption microwave switch
Signal output part, one end of the control circuit connects the 3rd end of the microwave circuit, and the other end connects the microwave electricity
4th end on road.
2. novel absorption microwave switch according to claim 1, it is characterised in that the microwave circuit includes work electricity
Road and absorbing circuit, the first end of the operating circuit connect the signal input part, the second end connection of the operating circuit
The input of the absorbing circuit, the output end of the absorbing circuit connect the signal output part, and the of the operating circuit
Three ends are the 3rd end of the microwave circuit, and the common point of the operating circuit and the absorbing circuit is the microwave circuit
4th end, the current-limiting resistance are used for impedance matching of the impedance with the signal output part for adjusting the absorbing circuit.
3. novel absorption microwave switch according to claim 2, it is characterised in that the operating circuit includes going here and there successively
The first PIN diode and the first electric capacity of connection, the positive pole of first PIN diode connect the first end of the operating circuit,
The negative pole of first PIN diode connects one end of first electric capacity, and the other end of first electric capacity connects the work
Make the second end of circuit, the common point of first PIN diode and first electric capacity is the 3rd end of the operating circuit；
The one end of the positive pole of first PIN diode also with the first inductance is connected, the other end of first inductance ground connection, and described the
The second PIN diode, the 3rd PIN diode, the 4th are parallel between the negative pole of one PIN diode and first electric capacity successively
PIN diode and the 5th PIN diode, second PIN diode, the 3rd PIN diode, the poles of the 4th PIN bis-
The negative pole of pipe and the 5th PIN diode is grounded respectively.
4. novel absorption microwave switch according to claim 2, it is characterised in that the absorbing circuit includes the second electricity
Hold and the 6th PIN diode, one end of second electric capacity connect the input of the absorbing circuit and the poles of the 6th PIN bis-
The positive pole of pipe, the other end of second electric capacity connect the output end of the absorbing circuit, the negative pole of the 6th PIN diode
Ground connection.
5. novel absorption microwave switch according to any one of claims 1 to 4, it is characterised in that the control circuit bag
Include the second inductance being sequentially connected in series, biasing resistor, the current-limiting resistance and the 3rd inductance, the first end connection institute of the series circuit
The 3rd end of microwave circuit is stated, the other end connects the 4th end of the microwave circuit, second inductance and the biasing resistor
Between be parallel with the first filter capacitor, the other end ground connection of first filter capacitor, the current-limiting resistance and the 3rd electricity
The second filter capacitor, the other end ground connection of second filter capacitor, the biasing resistor and the current limliting are parallel between sense
The common point connection bias voltage of resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720491500.9U CN206686156U (en) | 2017-05-04 | 2017-05-04 | A kind of novel absorption microwave switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720491500.9U CN206686156U (en) | 2017-05-04 | 2017-05-04 | A kind of novel absorption microwave switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206686156U true CN206686156U (en) | 2017-11-28 |
Family
ID=60405804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720491500.9U Expired - Fee Related CN206686156U (en) | 2017-05-04 | 2017-05-04 | A kind of novel absorption microwave switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206686156U (en) |
-
2017
- 2017-05-04 CN CN201720491500.9U patent/CN206686156U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |