CN203434258U - Miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler - Google Patents
Miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler Download PDFInfo
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- CN203434258U CN203434258U CN201320479422.2U CN201320479422U CN203434258U CN 203434258 U CN203434258 U CN 203434258U CN 201320479422 U CN201320479422 U CN 201320479422U CN 203434258 U CN203434258 U CN 203434258U
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- branch line
- line
- microstrip
- branch
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Abstract
The utility model provides a miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler, which comprises a first branch line and a second branch line. A third branch line and a fourth branch line are arranged between the first branch line and the second branch line. The above four branch lines together form a rectangular structure, wherein the four corners of the rectangular structure are provided with four ports. Each branch line is composed of at least one simplified dual right/left-handed transmission line structure unit. The simplified dual right/left-handed transmission line structure unit is composed of a segment of microstrip line, a microstrip sideway-feed open spiral inductor arranged at the middle part of the microstrip line, and a microstrip feed line. The microstrip feed line is connected with the microstrip line and the spiral inductor. All the spiral inductors are arranged inside the branch line coupler. According to the technical scheme of the utility model, the working frequency of the miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler can be determined according to needs. Meanwhile, the miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler is simple in design and the circuit complexity is effectively reduced.
Description
Technical field
The utility model belongs to microwave branch line coupler field.Be specifically related to a kind of helical structure and simplify antithesis right-hand man unit and the branch line coupler based on this unit.
Background technology
In microwave system, branch line coupler is a kind of widely used microwave device, such as the frequency mixer in and microwave receiver synthetic at vector network analyzer, power etc., has application.Traditional branch line coupler consists of two pairs of parallel microstrip lines, and wherein a pair of microstrip line characteristic impedance is 50 Europe, and another is 35.4 Europe to characteristic impedance, and electrical length is the quarter-wave of operating frequency.This traditional branch line coupler has good performance in operating frequency, but its harmonic wave frequency range in operating frequency has similar frequency response, therefore be necessary to consider to carry out harmonic wave inhibition, common harmonic wave suppresses to introduce new filtering device to be realized, can increase circuit size like this, there is Insertion Loss in passive filter simultaneously, can reduce circuit performance.In low-frequency range, traditional conventional branch line coupler area occupied is large, is unfavorable for the integrated of circuit.
Summary of the invention
The purpose of this utility model is to provide a kind of branch line coupler based on simplifying antithesis right-hand man construction unit, and this coupler has reduced circuit size effectively, can have good harmonic wave rejection simultaneously.
Miniaturization harmonic wave of the present utility model suppresses to simplify antithesis composite left-and-right-hand branch line coupler, comprise the first branch line and the second branch line, between the first branch line and the second branch line, be provided with the 3rd branch line and the 4th branch line, these four sections of branch lines form a rectangle, on four angles of rectangle, be respectively equipped with the first port, the second port, the 3rd port and the 4th port, every section of branch line is simplified antithesis composite left-and-right-hand transmission line structure unit by least one and is realized, described simplification antithesis composite left-and-right-hand transmission line structure unit comprises one section of microstrip line, micro-with side feedback open circuit rectangle spiral inductor and the microstrip feed line that is connected microstrip line and spiral inductance.
Microstrip feed line in described simplification antithesis composite left-and-right-hand transmission line structure unit is drawn by the middle part of microstrip line, and spiral inductance is positioned at the middle part of microstrip line, and is all arranged on the inside of branch line coupler.
The utility model is compared with traditional branch line coupler, beneficial effect is: utilize and simplify frequency response and the phase-shift characterisitc that antithesis left-and-right-hand transmission line structure unit has, make it for harmonic wave, there is good inhibitory action, this is that traditional branch line coupler is not available, can effectively reduce circuit size simultaneously.Miniaturization harmonic wave of the present utility model suppresses the operating frequency of simplification antithesis composite left-and-right-hand branch line coupler can determine that simplicity of design has reduced circuit complexity effectively as required.
Accompanying drawing explanation
Fig. 1 is a kind of simplification antithesis composite left-and-right-hand construction unit structure chart the utility model proposes.
Fig. 2 is the equivalent circuit diagram of simplification antithesis composite left-and-right-hand construction unit of the present utility model.
Fig. 3 is the 1GHz branch line coupler structure chart based on simplifying composite left-and-right-hand construction unit of the present utility model.
Fig. 4 is the simulation result figure of branch line coupler of the present utility model: the graph of relation of operating frequency and reflection coefficient.
Fig. 5 is the simulation result figure of branch line coupler of the present utility model: the graph of relation of the phase difference of operating frequency and port 2 and port 3.
Embodiment
Below in conjunction with accompanying drawing, a kind of miniaturization harmonic wave of simplifying antithesis composite left-and-right-hand unit and realization thereof the utility model proposes is suppressed to branch line coupler embodiment and is specifically described:
A kind of simplification antithesis composite left-and-right-hand unit of the utility model design as shown in Figure 1, comprises one section of microstrip line 1, micro-band side feedback open circuit rectangle spiral inductor 2, and the microstrip feed line 3 of connection microstrip line 1 and spiral inductance 2, feeder line 3 is drawn by microstrip line 1 middle part.Microstrip line 1 length is l
1, width is w
1.Micro-band rectangle spiral inductor 2 external diameters are d
out, internal diameter is d
in, live width is w, and adjacent lines spacing is s, and the number of turns is N.Feeder line 3 length are l, and live width is w.As shown in Figure 2, the transmission zero location design that parallel resonance is brought, at the frequency multiplication place of the operating frequency of branch line coupler, can be carried out harmonic wave inhibition to equivalent electric circuit effectively.
The utility model according to the operating frequency of Fig. 1 design at the branch line coupler of 1GHz as shown in Figure 2, it is 3.38 that this coupler is produced on dielectric constant, dielectric thickness is on the medium substrate of 0.8mm, comprise the first branch line 4 and the second branch line 5, between the first branch line 4 and the second branch line 5, be provided with the 3rd branch line 6 and the 4th branch line 7, four sections of branch lines form a rectangle, and every section of branch line is simplified composite left-and-right-hand cell formation by 3.Port one, port 2, port 3, port 4 lay respectively on four angles of rectangle, and characteristic impedance is 50 Europe.The first branch line 4 and the second branch line 5 characteristic impedances are 50 Europe, and its cell parameters is: w
1=0.9mm, l
1=10.2mm, l=0.6mm, d
out=3.5mm, w=0.3mm, s=0.2mm, d
in=0.9mm, N=3.The second branch line 6 and the second branch line 7 characteristic impedances are 35.4 Europe, and its cell parameters is: w
1=1.6mm, l
1=10mm, l=2mm, d
out=4.3mm, w=0.5mm, s=0.3mm, d
in=1.7mm, N=2.All spiral inductance structures are all positioned at branch line coupler inside, and for preventing that helical structure from overlapping, part is simplified antithesis composite left-and-right-hand unit and done symmetry transformation about self axis.
Fig. 4 and Fig. 5 are simulation results of the present utility model, and this branch line coupler is at operating frequency 1GHz place, reflection coefficient S as can be seen from Figure 4
11be less than-20dB, between port 2 and port 3, realized the constant power output of 3dB, and approached 0dB at 2GHz place reflection coefficient, show very strong harmonic responses.Phase difference at operating frequency place port 2 and port 3 is about 90 ° as can be seen from Figure 5.This branch line coupler is of a size of 30.6mm * 30mm simultaneously, than traditional branch line coupler (45.8mm * 44.8mm), has reduced approximately 56%, has realized well circuit miniaturization.
Claims (2)
1. miniaturization harmonic wave suppresses to simplify antithesis composite left-and-right-hand branch line coupler, comprise the first branch line (4) and the second branch line (5), between the first branch line (4) and the second branch line (5), be provided with the 3rd branch line (6) and the 4th branch line (7), these four sections of branch lines form a rectangle, on four angles of rectangle, be respectively equipped with the first port, the second port, the 3rd port and the 4th port, it is characterized in that, every section of branch line is simplified antithesis composite left-and-right-hand transmission line structure unit by least one and is realized, described simplification antithesis composite left-and-right-hand transmission line structure unit comprises one section of microstrip line (1), micro-band side feedback open circuit rectangle spiral inductor (2) and the microstrip feed line (3) that is connected microstrip line (1) and spiral inductance (2).
2. miniaturization harmonic wave according to claim 1 suppresses to simplify antithesis composite left-and-right-hand branch line coupler, it is characterized in that, microstrip feed line (3) in described simplification antithesis composite left-and-right-hand transmission line structure unit is drawn by the middle part of microstrip line (1), spiral inductance (2) is positioned at the middle part of microstrip line (1), and is all arranged on the inside of branch line coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479422.2U CN203434258U (en) | 2013-08-07 | 2013-08-07 | Miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479422.2U CN203434258U (en) | 2013-08-07 | 2013-08-07 | Miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler |
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| Publication Number | Publication Date |
|---|---|
| CN203434258U true CN203434258U (en) | 2014-02-12 |
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| CN201320479422.2U Expired - Fee Related CN203434258U (en) | 2013-08-07 | 2013-08-07 | Miniature harmonic-suppressed and simplified dual composite right/left-handed branch line coupler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025478A (en) * | 2016-06-30 | 2016-10-12 | 安徽四创电子股份有限公司 | High-directivity microstrip directional coupler |
| CN106025472A (en) * | 2016-06-28 | 2016-10-12 | 中国人民解放军空军工程大学 | CRLH branch line coupler structure and design method thereof |
| CN109921165A (en) * | 2019-03-05 | 2019-06-21 | 南京邮电大学 | A kind of lumped parameter IPD wide-band coupler |
| WO2020007109A1 (en) * | 2018-07-06 | 2020-01-09 | Huawei Technologies Co., Ltd. | Branch-line coupler |
| CN115347342A (en) * | 2021-05-12 | 2022-11-15 | 南宁富联富桂精密工业有限公司 | Branch coupler |
-
2013
- 2013-08-07 CN CN201320479422.2U patent/CN203434258U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025472A (en) * | 2016-06-28 | 2016-10-12 | 中国人民解放军空军工程大学 | CRLH branch line coupler structure and design method thereof |
| CN106025478A (en) * | 2016-06-30 | 2016-10-12 | 安徽四创电子股份有限公司 | High-directivity microstrip directional coupler |
| CN106025478B (en) * | 2016-06-30 | 2019-08-02 | 安徽四创电子股份有限公司 | A kind of microstrip directional coupler of high directivity |
| WO2020007109A1 (en) * | 2018-07-06 | 2020-01-09 | Huawei Technologies Co., Ltd. | Branch-line coupler |
| US10594291B2 (en) | 2018-07-06 | 2020-03-17 | Futurewei Technologies, Inc. | Branch-line coupler |
| CN109921165A (en) * | 2019-03-05 | 2019-06-21 | 南京邮电大学 | A kind of lumped parameter IPD wide-band coupler |
| CN109921165B (en) * | 2019-03-05 | 2021-04-06 | 南京邮电大学 | Lumped parameter IPD broadband coupler |
| CN115347342A (en) * | 2021-05-12 | 2022-11-15 | 南宁富联富桂精密工业有限公司 | Branch coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160807 |