CN102437844B - Isolation matching switch circuit - Google Patents
Isolation matching switch circuit Download PDFInfo
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- CN102437844B CN102437844B CN 201110336763 CN201110336763A CN102437844B CN 102437844 B CN102437844 B CN 102437844B CN 201110336763 CN201110336763 CN 201110336763 CN 201110336763 A CN201110336763 A CN 201110336763A CN 102437844 B CN102437844 B CN 102437844B
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Abstract
The invention relates to an isolation matching switch circuit, which comprises a plurality of isolation matching switch units and a drive unit. The drive unit has a plurality of pairs of inverted output terminals as well as generates an inverted first driving signal and an inverted second driving signal, wherein the generated signals are output by any pair of inverted output terminals. A first input terminal of each isolation matching switch unit is a signal input terminal of the isolation matching switch circuit; and a second input terminal, a third input terminal of each isolation matching switch unit are respectively and correspondedly connected with a pair of inverted output terminals of the drive unit one by one. Besides, a first output terminal of each isolation matching switch unit is an output terminal of the isolation matching switch circuit; a second output terminal is an isolation matching terminal of the isolation matching switch circuit as well as a matched resistor is connected between the second terminal and the ground. According to the invention, the isolation matching switch circuit has advantages of good isolation property, good input matching performance and small input standing wave.
Description
Technical field
The present invention relates to a kind of isolation coupling switching circuit, specifically, relate to a kind of isolation coupling switching circuit that is applied in the switch matrix circuit.
Background technology
The microwave switch matrix be with a plurality of microwave switches (as single-pole single-throw switch (SPST), single-pole double-throw switch (SPDT), single pole multiple throw) according to the form forming array of circuit topological structure with node, and realize the circuit module of the function of circuit in the mode of matrix.The main effect of microwave switch matrix is that the transmission path to the multichannel microwave signal switches, and according to the needs of system, select needed frequency signal to carry out follow-up processing in the different time periods, the also requirement that can import, export according to system, select of the control of the microwave signal of different input channels, output to different output channels or specific output channel by switch matrix inside.
Isolate the part of coupling switching circuit as switch matrix circuit, its performance has material impact to the performance of switch matrix circuit, for isolation, the input matching that improves switch matrix circuit, and reduce to import standing wave, just need to improve isolation, the input matching of isolating the coupling switching circuit, and reduce its input standing wave.
Summary of the invention
The purpose of this invention is to provide a kind of high isolation, import the isolation coupling switching circuit that matching is good, the input standing wave is little.
For achieving the above object, the technical solution used in the present invention is:
A kind of isolation coupling switching circuit comprises a plurality of isolation coupling switch elements, driver element;
Described driver element has many to reversed-phase output, described driver element produce the first anti-phase drive signal and second drive signal and by arbitrary to described reversed-phase output output;
Described isolation coupling switch element has 3 inputs, 2 outputs; The first input end of described isolation coupling switch element is the signal input part of described isolation coupling switching circuit, and its second input, the 3rd input connect one to one mutually with a pair of reversed-phase output of described driver element respectively; First output of described isolation coupling switch element is the output of described isolation coupling switching circuit, and its second output is the isolation mating end of described isolation coupling switching circuit, is connected with build-out resistor between described second output and the ground; Described first drive signal or the control of described second drive signal by the input of second input of described isolation coupling switch element are exported by first output by the signal of its first input end input, and described second drive signal or the control of described first drive signal by the input of the 3rd input of described isolation coupling switch element are exported by second output by the signal of its first input end input.
Preferably, described driver element comprises the driven in phase circuit, anti-phase drive circuit, common external first control end of the first input end of the first input end of described anti-phase drive circuit and described driven in phase circuit, common external second control end of second input of described anti-phase drive circuit and second input of described driven in phase circuit, common external first voltage of the 3rd input of described anti-phase drive circuit and the 3rd input of described driven in phase circuit, common external second voltage of the four-input terminal of described anti-phase drive circuit and the four-input terminal of described driven in phase circuit; Described anti-phase drive circuit and described driven in phase circuit all have n output, the a(a=1 of described anti-phase drive circuit, 2,, the n) a(a=1 of individual output and described driven in phase circuit, 2,, n) individual output constitutes a pair of described reversed-phase output.
Preferably, described driver element comprises 2 pairs of described reversed-phase outputs, described isolation coupling switching circuit comprises 2 described isolation coupling switch elements, and 2 described isolation coupling switch elements are respectively the first isolation coupling switch element, second and isolate the coupling switch element; First pair of described reversed-phase output is connected with the described second isolation coupling switch element, and second pair of described reversed-phase output is connected with the described first isolation coupling switch element.
Preferably, described driven in phase circuit comprises the driven in phase controller, and described driven in phase controller has 4 input pins, 2 output pins and 2 grounding pins; First described input pin is connected with an end of first resistor voltage divider network, the other end of described first resistor voltage divider network is the first input end of described driven in phase circuit, and described first resistor voltage divider network comprises second divider resistance between first divider resistance that is connected in series mutually with described first input pin, the common ends that is connected described first divider resistance and described first input pin and the ground; Second described input pin is connected with an end of second resistor voltage divider network, the other end of described second resistor voltage divider network is second input of described driven in phase circuit, and described second resistor voltage divider network comprises the 3rd divider resistance that is connected in series mutually with described second input pin, the common ends that is connected described the 3rd divider resistance and described second input pin and the 4th divider resistance between the ground; The 3rd described input pin is the 3rd input of described driven in phase circuit, be connected with the first filter capacitor network between described the 3rd input pin and the ground, first filter capacitor and second filter capacitor that the described first filter capacitor network comprises and connects; The 4th described input pin is the four-input terminal of described driven in phase circuit, be connected with the second filter capacitor network between described the 4th input pin and the ground, the 3rd filter capacitor and the 4th filter capacitor that the described second filter capacitor network comprises and connects; First described output pin is first output of described driven in phase circuit; Second described output pin is second output of described driven in phase circuit.
Preferably, described anti-phase drive circuit comprises anti-phase driving governor, and described anti-phase driving governor has 4 input pins, 2 output pins and 2 grounding pins; First described input pin is connected with an end of the 3rd resistor voltage divider network, the other end of described the 3rd resistor voltage divider network is the first input end of described anti-phase drive circuit, and described the 3rd resistor voltage divider network comprises the 6th divider resistance between the 5th divider resistance that is connected in series mutually with described first input pin, the common ends that is connected described the 5th divider resistance and described first input pin and the ground; Second described input pin is connected with an end of the 4th resistor voltage divider network, the other end of described the 4th resistor voltage divider network is second input of described anti-phase drive circuit, and described the 4th resistor voltage divider network comprises the 7th divider resistance that is connected in series mutually with described second input pin, the common ends that is connected described the 7th divider resistance and described second input pin and the 8th divider resistance between the ground; The 3rd described input pin is the 3rd input of described anti-phase drive circuit, be connected with the 3rd filter capacitor network between described the 3rd input pin and the ground, the 5th filter capacitor and the 6th filter capacitor that described the 3rd filter capacitor network comprises and connects; The 4th described input pin is the four-input terminal of described anti-phase drive circuit, be connected with the 4th filter capacitor network between described the 4th input pin and the ground, the 7th filter capacitor and the 8th filter capacitor that described the 4th filter capacitor network comprises and connects; First described output pin is first output of described anti-phase drive circuit; Second described output pin is second output of described anti-phase drive circuit.
Preferably, described isolation coupling switch element comprises the single-pole double-throw switch (SPDT) module, and it has 3 input pins and 2 output pins; First described input pin is the first input end of described isolation coupling switch element; Second described input pin is connected with the 9th filter capacitor, the other end ground connection of described the 9th filter capacitor, described second input pin is connected in series first speed-up capacitor that is in parallel and a common ends of first current-limiting resistance with the common ends of described the 9th filter capacitor, another common ends of described first speed-up capacitor and described first current-limiting resistance is second input of described isolation coupling switch element; The 3rd described input pin is connected with the tenth filter capacitor, the other end ground connection of described the tenth filter capacitor, described the 3rd input pin is connected in series second speed-up capacitor that is in parallel and a common ends of second current-limiting resistance with the common ends of described the tenth filter capacitor, another common ends of described second speed-up capacitor and described second current-limiting resistance is the 3rd input of described isolation coupling switch element; First described output pin is first output of described isolation coupling switch element; Second described output pin is second output of described isolation coupling switch element.
Because the technique scheme utilization, the present invention compared with prior art has following advantage: isolation coupling switching circuit isolation of the present invention is good, the input matching is good and the input standing wave is little.
Description of drawings
Accompanying drawing 2 is the circuit theory diagrams of the driven in phase circuit of isolation coupling switching circuit of the present invention.
Accompanying drawing 3 is the circuit theory diagrams of the anti-phase drive circuit of isolation coupling switching circuit of the present invention.
Accompanying drawing 4 is the circuit theory diagrams of the isolation coupling switch element of isolation coupling switching circuit of the present invention.
Embodiment
Below in conjunction with embodiment shown in the drawings the present invention is further described.
Embodiment one: shown in accompanying drawing 1.
A kind of isolation coupling switching circuit comprises that 2 are isolated coupling switch element and driver element.Isolate the coupling switch element for 2 and be respectively the first isolation coupling switch element 31, the second isolation coupling switch element 32.
Driver element comprises driven in phase circuit 22, anti-phase drive circuit 21.Common external first control end of the first input end RIN1 of anti-phase drive circuit 21 and the first input end RIN_1 of driven in phase circuit 22, first control end provides external Transistor-Transistor Logic level CB1; Common external second control end of second input RIN2 of anti-phase drive circuit 21 and the second input RIN_2 of driven in phase circuit 22, second control end provides external Transistor-Transistor Logic level CA1; The 3rd input VIN1 of anti-phase drive circuit 21 and the 3rd input VIN1 of driven in phase circuit 22 be external jointly-first voltage of 5V, and the 4th defeated VIN2 of the four-input terminal VIN2 of anti-phase drive circuit 21 and driven in phase circuit 22 goes into to hold second voltage of common external 5V.
Anti-phase drive circuit 21 and driven in phase circuit 22 all have 2 outputs, first output IN14 of anti-phase drive circuit 21 and the first output IN13 of driven in phase circuit 22 constitute first pair of reversed-phase output, and second output IN12 of anti-phase drive circuit 21 and the second output IN11 of driven in phase circuit 22 constitute second pair of reversed-phase output.
Driver element produces the first anti-phase drive signal and second drive signal and by arbitrary reversed-phase output is exported.
Isolate the coupling switch element and have 3 inputs, 2 outputs.The first input end FIN11 or the FIN12 that isolate the coupling switch element are the signal input part of isolating the coupling switching circuit, and its second input IN11_1 or IN13_1, the 3rd input IN12_0 or IN14_0 connect one to one mutually with a pair of reversed-phase output of driver element respectively.In the present embodiment, the first output IN14 of anti-phase drive circuit is connected with second the 3rd input of isolating matching unit 32, and the first output IN13 of driven in phase circuit is connected with second second input of isolating matching unit 32; The second output IN12 of anti-phase drive circuit is connected with first the 3rd input of isolating matching unit 31, and the second output IN11 of driven in phase circuit is connected with first second input of isolating matching unit 31.And the drive signal of setting the generation of driven in phase circuit is first drive signal, and the drive signal that anti-phase drive circuit produces is second drive signal.
Isolate first output Fout11 of coupling switch element or Fout12 mates switching circuit for isolation output, its second Ausgang out11 or fout12 are connected with build-out resistor R1 or R2 for isolating the isolation mating end of coupling switching circuit between the second Ausgang out11 or fout12 and the ground.First drive signal control by the second input IN11_1 or IN13_1 input of isolation coupling switch element is exported by the first output Fout11 or Fout12 by the signal of its first input end FIN11 or FIN12 input; Second drive signal control by the 3rd input IN12_0 or IN14_0 input of isolation coupling switch element is exported by the second Ausgang out11 or fout12 by the signal of its first input end FIN11 or FIN12 input.
Thereby each build-out resistor R1 or R2 are used for the coupling input improves the input standing wave.And isolate the second input INx1_1 of coupling switching circuit or INx3_1 except can control input signals by its first output Fout11 or the Fout12 output, can also block adjacency channel is coupled to this first output by interchannel signal.
Shown in accompanying drawing 2, driven in phase circuit 22 comprises driven in phase controller 8053P1, and driven in phase controller 8053P1 has 4 input pins (being respectively the 8th pin, the 4th pin, the 7th pin, the 2nd pin), 2 output pins (being respectively the 3rd pin, the 6th pin) and 2 grounding pins (being respectively the 1st pin, the 5th pin).First input pin (i.e. the 8th pin) is connected with an end of first resistor voltage divider network, the other end of first resistor voltage divider network is the first input end RIN_1 of driven in phase circuit 22, first resistor voltage divider network comprises the first divider resistance RP3 that is connected in series mutually with first input pin (the 8th pin), be connected the common ends of the first divider resistance RP3 and first input pin (the 8th pin) and the second divider resistance RP4 between the ground, first resistor voltage divider network carries out dividing potential drop to the control signal of input, the purpose of dividing potential drop is to improve the actuating speed of driven in phase controller 8053P1, thereby improves the switching speed of switching circuit; Second input pin (i.e. the 4th pin) is connected with an end of second resistor voltage divider network, the other end of second resistor voltage divider network is the second input RIN_2 of driven in phase circuit 22, second resistor voltage divider network comprises the 3rd divider resistance RP1 that is connected in series mutually with second input pin (the 4th pin), the common ends that is connected the 3rd divider resistance RP1 and second input pin (the 4th pin) and the 4th divider resistance RP2 between the ground, and second resistor voltage divider network is equally in order to improve the switching speed of switching circuit; The 3rd input pin (i.e. the 7th pin) is the 3rd input VIN1 of driven in phase circuit 22, be connected with the first filter capacitor network between the 3rd input pin (the 7th pin) and the ground, the first filter capacitor C4 and the second filter capacitor C3 that the first filter capacitor network comprises and connects; The 4th input pin (i.e. the 2nd pin) is the four-input terminal VIN2 of driven in phase circuit 22, be connected with the second filter capacitor network between the 4th input pin (the 2nd pin) and the ground, the 3rd filter capacitor C1 and the 4th filter capacitor C2 that the second filter capacitor network comprises and connects; First output pin (i.e. the 3rd pin) is the first output IN11 of driven in phase circuit 22; Second output pin (i.e. the 6th pin) is the second output IN13 of driven in phase circuit 22.
Shown in accompanying drawing 3, anti-phase drive circuit 21 comprises anti-phase driving governor 8053F1, and anti-phase driving governor 8053F1 has 4 input pins (being respectively the 7th pin, the 4th pin, the 8th pin, the 2nd pin), 2 output pins (being respectively the 6th pin, the 3rd pin) and 2 grounding pins (being respectively the 1st pin, the 5th pin).First input pin (i.e. the 7th pin) is connected with an end of the 3rd resistor voltage divider network, the other end of the 3rd resistor voltage divider network is the first input end RIN1 of anti-phase drive circuit 21, the 3rd resistor voltage divider network comprises the 5th divider resistance RP7 that is connected in series mutually with first input pin (the 7th pin), the common ends that is connected the 5th divider resistance RP7 and first input pin (the 7th pin) and the 6th divider resistance RP8 between the ground, and the 3rd resistor voltage divider network is used to improve the switching speed of switching circuit; Second input pin (i.e. the 4th pin) is connected with an end of the 4th resistor voltage divider network, the other end of the 4th resistor voltage divider network is the second input RIN2 of anti-phase drive circuit 21, the 4th resistor voltage divider network comprises the 7th divider resistance RP5 that is connected in series mutually with second input pin (the 7th pin), the common ends that is connected the 7th divider resistance RP5 and second input pin (the 7th pin) and the 8th divider resistance RP6 between the ground, and the 4th resistor voltage divider network is used to improve the switching speed of switching circuit; The 3rd input pin (i.e. the 8th pin) is the 3rd input VIN1 of anti-phase drive circuit 21, be connected with the 3rd filter capacitor network between the 3rd input pin (the 8th pin) and the ground, the 5th filter capacitor C8 and the 6th filter capacitor C7 that the 3rd filter capacitor network comprises and connects; The 4th input pin (i.e. the 2nd pin) is the four-input terminal VIN2 of anti-phase drive circuit 22, be connected with the 4th filter capacitor network between the 4th input pin (the 2nd pin) and the ground, the 7th filter capacitor C5 and the 8th filter capacitor C6 that the 4th filter capacitor network comprises and connects; First output pin (i.e. the 6th pin) is the first output IN14 of anti-phase drive circuit 21; Second output pin (i.e. the 3rd pin) is the second output IN12 of anti-phase drive circuit 21.
Shown in accompanying drawing 4, isolating coupling switch element 31 with first is example, isolate the coupling switch element and comprise single-pole double-throw switch (SPDT) module N1, it has 3 input pins (being respectively the 1st pin, the 4th pin, the 5th pin) and 2 output pins (being respectively the 2nd pin, the 3rd pin).First input pin (i.e. the 1st pin) is for isolating the first input end FINx1 of coupling switch element; Second input pin (i.e. the 4th pin) is connected with the 9th filter capacitor C12, the other end ground connection of the 9th filter capacitor C12, second input pin (the 4th pin) is connected in series the first speed-up capacitor C11 that is in parallel and the common ends of the first current-limiting resistance R11 with the common ends of the 9th filter capacitor C12, another common ends of the first speed-up capacitor C11 and the first current-limiting resistance R11 is for isolating the second input INx1_1 of coupling switch element; The 3rd input pin (i.e. the 5th pin) is connected with the tenth filter capacitor C13, the other end ground connection of the tenth filter capacitor C13, the 3rd input pin (the 5th pin) is connected in series the second speed-up capacitor C14 that is in parallel and the common ends of the second current-limiting resistance R12 with the common ends of the tenth filter capacitor C13, another common ends of the second speed-up capacitor C14 and the second current-limiting resistance R12 is for isolating the 3rd input INx2_0 of coupling switch element; First output pin (i.e. the 2nd pin) is for isolating the first output Fout11 of coupling switch element; Second output pin (i.e. the 3rd pin) is for isolating the second Ausgang out11 of coupling switch element.
Isolation coupling switching circuit of the present invention has advantages such as isolation is good, the input matching is good, the input standing wave is little, is applicable to switch matrix circuit.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (6)
1. isolate the coupling switching circuit for one kind, it is characterized in that: described isolation coupling switching circuit comprises a plurality of isolation coupling switch elements, driver element;
Described driver element has many to reversed-phase output, described driver element produce the first anti-phase drive signal and second drive signal and by arbitrary to described reversed-phase output output;
Described isolation coupling switch element has 3 inputs, 2 outputs; The first input end of described isolation coupling switch element is the signal input part of described isolation coupling switching circuit, and its second input, the 3rd input connect one to one mutually with a pair of reversed-phase output of described driver element respectively; First output of described isolation coupling switch element is the output of described isolation coupling switching circuit, and its second output is the isolation mating end of described isolation coupling switching circuit, is connected with build-out resistor between described second output and the ground; Described first drive signal or the control of described second drive signal by the input of second input of described isolation coupling switch element are exported by first output by the signal of its first input end input, and described second drive signal or the control of described first drive signal by the input of the 3rd input of described isolation coupling switch element are exported by second output by the signal of its first input end input.
2. isolation coupling switching circuit according to claim 1, it is characterized in that: described driver element comprises the driven in phase circuit, anti-phase drive circuit, common external first control end of the first input end of the first input end of described anti-phase drive circuit and described driven in phase circuit, common external second control end of second input of described anti-phase drive circuit and second input of described driven in phase circuit, common external first voltage of the 3rd input of described anti-phase drive circuit and the 3rd input of described driven in phase circuit, common external second voltage of the four-input terminal of described anti-phase drive circuit and the four-input terminal of described driven in phase circuit; Described anti-phase drive circuit and described driven in phase circuit all have n output, and a output of described anti-phase drive circuit and a output of described driven in phase circuit constitute a pair of described reversed-phase output, a=1 wherein, and 2 ..., n.
3. isolation coupling switching circuit according to claim 2, it is characterized in that: described driver element comprises 2 pairs of described reversed-phase outputs, described isolation coupling switching circuit comprises 2 described isolation coupling switch elements, and 2 described isolation coupling switch elements are respectively the first isolation coupling switch element, second and isolate the coupling switch element; First pair of described reversed-phase output is connected with the described second isolation coupling switch element, and second pair of described reversed-phase output is connected with the described first isolation coupling switch element.
4. isolation coupling switching circuit according to claim 2, it is characterized in that: described driven in phase circuit comprises the driven in phase controller, described driven in phase controller has 4 input pins, 2 output pins and 2 grounding pins; First described input pin is connected with an end of first resistor voltage divider network, the other end of described first resistor voltage divider network is the first input end of described driven in phase circuit, and described first resistor voltage divider network comprises second divider resistance between first divider resistance that is connected in series mutually with described first input pin, the common ends that is connected described first divider resistance and described first input pin and the ground; Second described input pin is connected with an end of second resistor voltage divider network, the other end of described second resistor voltage divider network is second input of described driven in phase circuit, and described second resistor voltage divider network comprises the 3rd divider resistance that is connected in series mutually with described second input pin, the common ends that is connected described the 3rd divider resistance and described second input pin and the 4th divider resistance between the ground; The 3rd described input pin is the 3rd input of described driven in phase circuit, be connected with the first filter capacitor network between described the 3rd input pin and the ground, first filter capacitor and second filter capacitor that the described first filter capacitor network comprises and connects; The 4th described input pin is the four-input terminal of described driven in phase circuit, be connected with the second filter capacitor network between described the 4th input pin and the ground, the 3rd filter capacitor and the 4th filter capacitor that the described second filter capacitor network comprises and connects; First described output pin is first output of described driven in phase circuit; Second described output pin is second output of described driven in phase circuit.
5. isolation coupling switching circuit according to claim 2, it is characterized in that: described anti-phase drive circuit comprises anti-phase driving governor, described anti-phase driving governor has 4 input pins, 2 output pins and 2 grounding pins; First described input pin is connected with an end of the 3rd resistor voltage divider network, the other end of described the 3rd resistor voltage divider network is the first input end of described anti-phase drive circuit, and described the 3rd resistor voltage divider network comprises the 6th divider resistance between the 5th divider resistance that is connected in series mutually with described first input pin, the common ends that is connected described the 5th divider resistance and described first input pin and the ground; Second described input pin is connected with an end of the 4th resistor voltage divider network, the other end of described the 4th resistor voltage divider network is second input of described anti-phase drive circuit, and described the 4th resistor voltage divider network comprises the 7th divider resistance that is connected in series mutually with described second input pin, the common ends that is connected described the 7th divider resistance and described second input pin and the 8th divider resistance between the ground; The 3rd described input pin is the 3rd input of described anti-phase drive circuit, be connected with the 3rd filter capacitor network between described the 3rd input pin and the ground, the 5th filter capacitor and the 6th filter capacitor that described the 3rd filter capacitor network comprises and connects; The 4th described input pin is the four-input terminal of described anti-phase drive circuit, be connected with the 4th filter capacitor network between described the 4th input pin and the ground, the 7th filter capacitor and the 8th filter capacitor that described the 4th filter capacitor network comprises and connects; First described output pin is first output of described anti-phase drive circuit; Second described output pin is second output of described anti-phase drive circuit.
6. isolation coupling switching circuit according to claim 1 is characterized in that: described isolation coupling switch element comprises the single-pole double-throw switch (SPDT) module, and it has 3 input pins and 2 output pins; First described input pin is the first input end of described isolation coupling switch element; Second described input pin is connected with the 9th filter capacitor, the other end ground connection of described the 9th filter capacitor, described second input pin is connected in series first speed-up capacitor that is in parallel and a common ends of first current-limiting resistance with the common ends of described the 9th filter capacitor, another common ends of described first speed-up capacitor and described first current-limiting resistance is second input of described isolation coupling switch element; The 3rd described input pin is connected with the tenth filter capacitor, the other end ground connection of described the tenth filter capacitor, described the 3rd input pin is connected in series second speed-up capacitor that is in parallel and a common ends of second current-limiting resistance with the common ends of described the tenth filter capacitor, another common ends of described second speed-up capacitor and described second current-limiting resistance is the 3rd input of described isolation coupling switch element; First described output pin is first output of described isolation coupling switch element; Second described output pin is second output of described isolation coupling switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110336763 CN102437844B (en) | 2011-10-31 | 2011-10-31 | Isolation matching switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110336763 CN102437844B (en) | 2011-10-31 | 2011-10-31 | Isolation matching switch circuit |
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| CN102437844A CN102437844A (en) | 2012-05-02 |
| CN102437844B true CN102437844B (en) | 2013-07-31 |
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| US5103195A (en) * | 1989-10-13 | 1992-04-07 | Hewlett-Packard Company | Hybrid gaas mmic fet-pin diode switch |
| AUPS295002A0 (en) * | 2002-06-13 | 2002-07-04 | Thorlock International Limited | A receive system for high q antennas in nqr |
| CN100334774C (en) * | 2004-11-19 | 2007-08-29 | 华为技术有限公司 | Microwave switch and power amplifier thermal back-up, its mutual system and realization thereof |
| JP4843455B2 (en) * | 2006-10-30 | 2011-12-21 | 株式会社エヌ・ティ・ティ・ドコモ | Matching circuit, multiband amplifier |
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