CN101436703A - Microwave low-waveband ultra-minitype 3dB sawtooth coupling quadrature electric bridge - Google Patents
Microwave low-waveband ultra-minitype 3dB sawtooth coupling quadrature electric bridge Download PDFInfo
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- CN101436703A CN101436703A CNA2007101352084A CN200710135208A CN101436703A CN 101436703 A CN101436703 A CN 101436703A CN A2007101352084 A CNA2007101352084 A CN A2007101352084A CN 200710135208 A CN200710135208 A CN 200710135208A CN 101436703 A CN101436703 A CN 101436703A
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Abstract
The invention discloses a microwave low-band ultra-micro 3dB sawtooth coupling quadrature bridge. A circuit composition of the bridge comprises a saw-toothed coupling line, the middle part of the coupling line is broken to form a communicated strip line and two strip lines positioned at both sides of the communicated strip line, the two strip lines are connected through a metal wire, the input end is adjacent with the straight-through end and the coupling end respectively, and circuits are produced on a ceramic substrate through ultra-fine micro-strip thin-film technology. The circuit design ensures that the straight-through end and the coupling end of the bridge are positioned on the two strip lines, makes a coupling slot achieve micron order to realize the close coupling of 3dB through the ultra-fine micro-strip thin-film technology, and ensures that a product has the advantages of low insertion loss, high directivity, high integration level, miniaturization and so on, and is taken as a basic important element of a microwave integrated circuit to be widely applied to circuits of a plurality of wireless communication devices.
Description
Affiliated technical field:
The present invention relates to the 3dB electric bridge in a kind of microwave integrated circuit, particularly a kind of microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge.
Background technology:
The 3dB electric bridge is widely used in microwave integrated circuit, such as phase shifter, and balance amplifier, power is synthetic, power division, modulator, multiple circuit such as frequency mixer.The 3dB quadrature bridge is four port network, and its characteristic is two mouthfuls of inputs, two mouthfuls of outputs, and two input ports isolate mutually, and two output ports are respectively exported 50% of input port input power, and phase of output signal differs 90 degree.Traditional little band manufacture craft can't use the coupling of single-unit to realize the close coupling of 3dB, therefore uses the coupler serial connection of two 8.34dB to form the close coupling that reaches 3dB for traditional technology, so just causes the volume of electric bridge big, and the insertion loss is big.The 3dB electric bridge that uses on the market often adopts branch's electric bridge now, increase the coupling bandwidth of branch's electric bridge, just must increase its joint number, and this just makes the volume of electric bridge increase.The circuit that has adopts the method for external 3dB electric bridge, and this just is unfavorable for the integrated of circuit.
Summary of the invention:
Technical problem to be solved by this invention is, overcomes the shortcoming of existing 3dB electric bridge, and the microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge of a kind of small size, high integration, low insertion loss is provided.
The technical scheme that the present invention solves its technical problem is: a kind of microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge, have input, coupled end, straight-through end, four ports of isolation end, circuit is formed and is comprised the zigzag coupling line, the angle of sawtooth is 90 degree, it is characterized in that the coupling line middle part disconnects, form the band line of a connection and be positioned at two strip line that are communicated with band line both sides, this two strip line connects by metal wire, input is adjacent with coupled end with straight-through end respectively, and described circuit is produced on the ceramic substrate by the trickle band thin-film technique of ultra micro.
Beneficial effect of the present invention is as follows: circuit design is positioned on two strip line straight-through end of electric bridge and coupled end, utilize the structure of single-unit coupling to realize low insertion loss, small product size is little, make the coupling slit reach the close coupling that micron order has been realized 3dB by super fine little band thin-film technique, make product have advantages such as low insertion loss, high directivity, high integration and big bandwidth, as the critical elements on a basis of microwave integrated circuit, be widely used in the circuit of plurality of devices of wireless telecommunications.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment:
Describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments.But the invention is not restricted to given embodiment.
As shown in Figure 1,3dB sawtooth coupling quadrature bridge of the present invention has input IN, coupled end OH, four ports of straight-through end ZT, isolation end ISO, circuit is formed the zigzag coupling line that comprises that the middle part disconnects, the angle of sawtooth is 90 degree, form the band line MS1 of a connection and be positioned at two strip line MS21, the MS22 that is communicated with band line both sides, this two strip line MS21, MS22 connect by metal wire D, input IN is adjacent with coupled end OH with straight-through end ZT, and described circuit is produced on the ceramic substrate (not drawing among the figure) by the trickle band thin-film technique of ultra micro.
Among the embodiment, further aspect of the present invention is: have groove 1 and "T"-shaped groove 2 longitudinally in the zigzag coupling line outside, play to strengthen being coupled, reducing the coupled zone to the effect of the influence of dependence frequently.
Among the embodiment, ceramic substrate is the alundum (Al ceramic substrate of dielectric constant 9.9, thickness 0.5mm.
Claims (3)
1, microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge has input, coupled end, straight-through end, four ports of isolation end, circuit is formed and is comprised the zigzag coupling line, the angle of sawtooth is 90 degree, it is characterized in that the coupling line middle part disconnects, form the band line of a connection and be positioned at two strip line that are communicated with band line both sides, this two strip line connects by metal wire, and input is adjacent with coupled end with straight-through end, and described circuit is produced on the ceramic substrate by the trickle band thin-film technique of ultra micro.
2, microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge according to claim 1 is characterized in that having groove longitudinally in the zigzag coupling line outside.
3, microwave low-waveband ultra-minitype 3 dB sawtooth coupling quadrature electric bridge according to claim 1 is characterized in that having "T"-shaped groove in the zigzag coupling line outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101352084A CN101436703A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype 3dB sawtooth coupling quadrature electric bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101352084A CN101436703A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype 3dB sawtooth coupling quadrature electric bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101436703A true CN101436703A (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101352084A Pending CN101436703A (en) | 2007-11-14 | 2007-11-14 | Microwave low-waveband ultra-minitype 3dB sawtooth coupling quadrature electric bridge |
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| CN (1) | CN101436703A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700916A (en) * | 2013-12-31 | 2014-04-02 | 四川九洲电器集团有限责任公司 | Micro-strip orthogonal plane 3dB electrical bridge |
| CN103943933A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband coupler with rectangular notches |
| CN103943931A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband coupler with shielded lines |
| CN103943929A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband quadrature electric bridge with shielded lines |
| CN104022331A (en) * | 2014-04-08 | 2014-09-03 | 蓝小玲 | Co-frequency combiner with F-type 3dB bridge |
| CN104979611A (en) * | 2015-07-29 | 2015-10-14 | 胡雨思 | Adjustable directional coupler |
| CN104993206A (en) * | 2015-07-29 | 2015-10-21 | 胡雨思 | Miniaturized directional coupler |
| WO2018214567A1 (en) * | 2017-05-25 | 2018-11-29 | 李万 | Electric power detection system |
| CN109411859A (en) * | 2018-11-27 | 2019-03-01 | 安徽阖煦微波技术有限公司 | A kind of full frequency band water proof type four goes out bridge structure and preparation method thereof into four |
-
2007
- 2007-11-14 CN CNA2007101352084A patent/CN101436703A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700916A (en) * | 2013-12-31 | 2014-04-02 | 四川九洲电器集团有限责任公司 | Micro-strip orthogonal plane 3dB electrical bridge |
| CN104022331A (en) * | 2014-04-08 | 2014-09-03 | 蓝小玲 | Co-frequency combiner with F-type 3dB bridge |
| CN104022331B (en) * | 2014-04-08 | 2016-03-16 | 深圳市正弦波测试技术有限公司 | A kind of same frequency combiner with F type 3dB electric bridge |
| CN103943933B (en) * | 2014-04-26 | 2017-12-01 | 陈振德 | A kind of C-band coupler with rectangular indentation |
| CN103943929A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband quadrature electric bridge with shielded lines |
| CN103943931A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband coupler with shielded lines |
| CN103943929B (en) * | 2014-04-26 | 2017-11-10 | 陈振德 | A kind of C-band quadrature bridge with shielding line |
| CN103943933A (en) * | 2014-04-26 | 2014-07-23 | 陈其钗 | C-waveband coupler with rectangular notches |
| CN103943931B (en) * | 2014-04-26 | 2017-12-01 | 重庆市木越机械制造有限公司 | A kind of C-band coupler with shielding line |
| CN104979611A (en) * | 2015-07-29 | 2015-10-14 | 胡雨思 | Adjustable directional coupler |
| CN104993206A (en) * | 2015-07-29 | 2015-10-21 | 胡雨思 | Miniaturized directional coupler |
| WO2018214567A1 (en) * | 2017-05-25 | 2018-11-29 | 李万 | Electric power detection system |
| CN109411859A (en) * | 2018-11-27 | 2019-03-01 | 安徽阖煦微波技术有限公司 | A kind of full frequency band water proof type four goes out bridge structure and preparation method thereof into four |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090520 |