CN210926271U - High-performance microstrip sum-difference device based on three-branch bridge - Google Patents
High-performance microstrip sum-difference device based on three-branch bridge Download PDFInfo
- Publication number
- CN210926271U CN210926271U CN201922298004.3U CN201922298004U CN210926271U CN 210926271 U CN210926271 U CN 210926271U CN 201922298004 U CN201922298004 U CN 201922298004U CN 210926271 U CN210926271 U CN 210926271U
- Authority
- CN
- China
- Prior art keywords
- arm
- branch
- branch bridge
- input
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 239000002356 single layer Substances 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Images
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model discloses a high performance microstrip sum difference ware based on three branch electric bridges. The high-performance microstrip sum-difference device comprises a dielectric substrate and three-branch bridges, wherein the dielectric substrate is provided with a first input port, a second input port, a third input port, a fourth input port, a first output port, a second output port, a third output port and a fourth output port, the three-branch bridges are provided with a first three-branch bridge, a second three-branch bridge, a third three-branch bridge and a fourth three-branch bridge, and the three-branch bridges are uniformly distributed on the surface of the dielectric substrate; the ports are respectively connected with the first input arm and the second input arm of the first three-branch bridge, and the first input arm and the second input arm of the third three-branch bridge. The center of the sum and difference device is provided with a metallized through hole, so that the isolation characteristic among all ports is improved. The utility model discloses a single-layer structure, the design is simple, and processing is convenient, has good electrical property.
Description
Technical Field
The utility model relates to a microwave circuit technical field especially relates to a high performance microstrip sum difference ware based on three branch electric bridges.
Background
The sum and difference device is an important component in a phased array radar system, mainly used for comparing the amplitude of echo signals received by a plurality of paths of wave beams, obtaining sum and difference signals from the sum and difference signals, and is very important for designing a high-performance sum and difference network for forming sum and difference wave beams for accurate distance measurement and angle measurement of the radar, and the sum and difference network directly influences important indexes such as tracking accuracy and tracking distance of the radar.
The traditional sum-difference device adopts a waveguide type structure, has large and heavy appearance, is not suitable for aircraft airborne electronic equipment, and has higher requirement on the precision of machining; the annular bridge with better electrical property consists of three sections of quarter-wavelength microstrip lines and one section of three-quarter-wavelength microstrip lines, the output port and the difference output port are separated by two input ports at intervals, and the annular bridge is connected with other circuits through flying wires or multilayer circuits when forming a network, so that the design and the processing are complex.
For the above reasons, the conventional sum and difference device is not favorable for the simplified design of the sum and difference feed network in the microwave circuit system, and the present airborne electronic equipment requires high integration, which not only requires each device to have better electrical performance, but also requires simple design and fast and convenient processing. Therefore, the development of the sum and difference device with simple design, convenient processing and excellent performance has very important significance.
The utility model has the following contents:
to the problem that exists, the utility model discloses a high performance microstrip sum difference ware based on three branch electric bridges, the medium base plate is individual layer printed circuit board structure, and the design is simple, and processing is convenient, has good electrical property.
The utility model adopts the technical proposal that: a high performance microstrip sum and difference device based on a three-branch bridge is provided. The high-performance microstrip sum-difference device comprises a dielectric substrate and three-branch bridges, wherein the dielectric substrate is provided with a first input port, a second input port, a third input port, a fourth input port, a first output port, a second output port, a third output port and a fourth output port which are respectively connected with a first input arm and a second input arm of the first three-branch bridge, a first output arm and a second output arm of the second three-branch bridge, a first input arm and a second input arm of the third three-branch bridge, and a first output arm and a second output arm of the fourth three-branch bridge, and are uniformly distributed on the surface of the dielectric substrate; the second output arm of the first three-branch bridge is connected with the first input arm of the second three-branch bridge, the second output arm of the third three-branch bridge is connected with the second input arm of the second three-branch bridge through a second quarter-wavelength microstrip line, the first output arm of the third three-branch bridge is connected with the first input arm of the fourth three-branch bridge through a third quarter-wavelength microstrip line, and the first output arm of the first three-branch bridge is connected with the second input arm of the fourth three-branch bridge.
Preferably, the first input port P1 and the fourth input port P4 are connected to the first input arm a11 of the first branch bridge and the second input arm of the fourth branch bridge through a first quarter microstrip line and a fourth quarter microstrip line, respectively.
Preferably, the second input port and the third input port are directly connected to the second input arm of the first branch bridge and the first input arm of the fourth branch bridge, and the first output port, the second output port, the third output port, and the fourth output port are directly connected to the second output arm of the second third branch bridge, the first output arm of the first third branch bridge, the second output arm of the fourth third branch bridge, and the first output arm of the fourth third branch bridge, respectively.
Preferably, the bending angles at the joints of the first three-branch bridge, the second three-branch bridge, the third three-branch bridge and the fourth three-branch bridge are set as tangential angles.
Preferably, the first three-branch bridge, the second three-branch bridge, the third three-branch bridge and the fourth three-branch bridge have the same size.
Preferably, the impedances of the middle branch line of the first three-branch bridge, the second three-branch bridge, the third three-branch bridge and the fourth three-branch bridge are 70.7 ohms, the impedances of the branch lines at two ends are 120.7 ohms, and the impedances of the through arms are both 50 ohms.
Preferably, the dielectric board substrate is a single-layer printed circuit board, and a metalized via hole is arranged in the center of the substrate, so that the isolation between ports is improved.
Since the technical scheme is used, the beneficial effects of the utility model are that: the four three-branch bridges are connected by adopting the three-branch bridges with excellent electrical property, wherein four ports of the two three-branch bridges are used as input arms, four ports of the two three-branch bridges are used as output arms, quarter-wavelength microstrip lines are used at proper positions to realize a 90-degree phase shift function, all the microstrip lines and the bridges are uniformly distributed on the same layer of the dielectric substrate, and a metalized through hole is arranged in the center of the dielectric substrate.
Drawings
The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic wiring diagram of a three-branch bridge according to an embodiment of the present invention.
Fig. 2 is a schematic wiring diagram of a high-performance microstrip sum and difference device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-2, the present invention relates to a high performance sum and difference device, specifically, the sum and difference device comprises a dielectric substrate and a three-branch bridge; the dielectric substrate is provided with a first input port P1, a second input port P2, a third input port P3, a fourth input port P4, a first output port P5, a second output port P6, a third output port P7 and a fourth output port P8, the three-branch bridge is provided with a first three-branch bridge A, a second three-branch bridge B, a third three-branch bridge C and a fourth three-branch bridge D, the first three-branch bridge A is provided with a first input arm A11, a second input arm A12, a first output arm A21 and a second output arm A22, the second three-branch bridge B is provided with a first input arm B11, a second input arm B12, a first output arm B21 and a second output arm B22, the third three-branch bridge C is provided with a first input arm C11, a second input arm C12, a first output arm C21 and a second output arm C22, the fourth three-branch bridge D is provided with a first input arm D28, a second input arm D599 and a fourth output arm D599, The second output arms D22 are uniformly distributed on the surface of the medium substrate; the second output arm a22 of the first three-branch bridge a is connected to the first input arm B11 of the second three-branch bridge B, the second output arm C22 of the third three-branch bridge C is connected to the second input arm B12 of the second three-branch bridge B, the first output arm C21 of the third three-branch bridge C is connected to the first input arm D11 of the fourth three-branch bridge D, and the output arm a21 of the first three-branch bridge a is connected to the input arm D12 of the fourth three-branch bridge D.
In a preferred embodiment of the present invention, the three-branch bridge A, B, C, D is modeled as shown in fig. 1.
In a preferred embodiment of the present invention, as shown in fig. 2, the straight arms a11-a21 and a12-a22 of the three-branch bridge a have a characteristic impedance of 50 ohms, the middle branch line has a characteristic impedance of 70.7 ohms, the two end branch lines have a characteristic impedance of 120.7 ohms, and the lengths of the branch lines and the intervals therebetween are all quarter wavelengths.
In a preferred embodiment of the present invention, the characteristic impedances of the straight arms B22-B11 and B21-B12 of the three-branch bridge B are 50 ohms, the characteristic impedance of the middle branch is 70.7 ohms, the characteristic impedances of the two branches are 120.7 ohms, and the lengths of the branches and the intervals therebetween are quarter wavelengths.
In a preferred embodiment of the present invention, the straight arms C11-C22 and C12-C21 of the three-branch bridge C have a characteristic impedance of 50 ohms, the middle branch line has a characteristic impedance of 70.7 ohms, the two end branch lines have a characteristic impedance of 120.7 ohms, and the lengths of the respective branch lines and the intervals therebetween are quarter wavelengths.
In a preferred embodiment of the present invention, the through arms D22-D11 and the through arms D21-D12 of the three-branch bridge D have a characteristic impedance of 50 ohms, the middle branch line has a characteristic impedance of 70.7 ohms, the two end branch lines have a characteristic impedance of 120.7 ohms, and the lengths of the respective branch lines and the intervals therebetween are quarter wavelengths.
In an embodiment of the present invention, the first input arm a11 of the first three-branch bridge a and the second input arm C12 of the third three-branch bridge C are respectively connected to the first quarter-wavelength microstrip line F1 and the second quarter-wavelength microstrip line F2, and further connected to the first input port P1 and the fourth input port P4.
In a specific embodiment of the present invention, the second input arm a12 of the first three-branch bridge a, the second of the second three-branch bridge B, an output arm B22, B21, the first input arm C11 of the third three-branch bridge C, the second of the fourth three-branch bridge D, the first output arm D22, D21 are directly connected to the second input port P2, the first output port P3, the second output port P4, the third input port P5, the third output port P7, and the fourth output port.
In an embodiment of the present invention, the second output arm C22 of the third three-branch bridge C is connected to the second input arm B12 of the second three-branch bridge B through the quarter-wave microstrip line F3, and the second output arm C12 of the third three-branch bridge C is connected to the first input arm D11 of the fourth three-branch bridge D through the quarter-wave microstrip line F2.
In a specific embodiment of the present invention, the junction between the second output arm a22 of the first three-branch bridge a and the first input arm B11 of the second three-branch bridge B, the second output arm C22 of the third three-branch bridge C and the second input arm B12 of the second three-branch bridge B, the junction between the first output arm C21 of the third three-branch bridge C and the first input arm D11 of the fourth three-branch bridge D, and the junction between the first output arm a21 of the first three-branch bridge a and the second input arm D12 of the fourth three-branch bridge D is subjected to the corner-cutting process.
In a specific embodiment of the present invention, the central position of the high performance microstrip sum and difference device is provided with a metalized via E, so as to obtain good isolation between the ports.
In a specific embodiment of the present invention, the first input port P1, the second input port P2, the third input port P5 and the fourth input port P6 of the microstrip diplexer are used to connect the antenna output signals of four partitions, the fourth output port P8 is the sum port thereof, the first output port P3 and the second output port P4 are the difference ports thereof, and the third output port P7 is the match port thereof.
To sum up, the utility model discloses a high performance microstrip sum difference ware based on three branch electric bridges. The high-performance sum-difference device comprises a dielectric substrate and three-branch bridges, wherein the dielectric substrate is provided with a first input port, a second input port, a third input port, a fourth input port, a first output port, a second output port, a third output port and a fourth output port which are respectively connected with a first input arm and a second input arm of the first three-branch bridge, a second output arm and a first output arm of the second three-branch bridge, a first input arm and a second input arm of the third three-branch bridge, and a second output arm and a first output arm of the fourth three-branch bridge, and are uniformly distributed on the surface of the dielectric substrate; the second output arm of the first three-branch bridge is connected with the first input arm of the second three-branch bridge, the second output arm of the third three-branch bridge is connected with the second input arm of the second three-branch bridge through a quarter-wavelength microstrip line, the first output arm of the third three-branch bridge is connected with the first input arm of the fourth three-branch bridge through a quarter-wavelength microstrip line, and the first output arm of the first three-branch bridge is connected with the second input arm of the fourth three-branch bridge. The utility model discloses a single-layer structure, the design is simple, and processing is convenient, has good electrical property.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention, and are not described herein.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (6)
1. A high-performance microstrip sum-difference device based on a three-branch bridge is characterized by comprising a dielectric substrate and the three-branch bridge, wherein the dielectric substrate is provided with a first input port, a second input port, a third input port and a fourth input port, and is provided with a first output port, a second output port, a third output port and a fourth output port;
the first input port and the second input port are connected with the first input arm and the second input arm of the first three-branch bridge, the third input port and the fourth input port are connected with the first input arm and the second input arm of the second three-branch bridge, the first output port and the second output port are connected with the second output arm and the first output arm of the second three-branch bridge, and the third output port and the fourth output port are connected with the second output arm and the first output arm of the fourth three-branch bridge.
2. The microstrip sum-difference device according to claim 1, wherein the first input arm of the first three-branch bridge is connected to the first input port via a first quarter-wavelength microstrip line, and the second input arm of the third three-branch bridge is connected to the fourth input port via a second quarter-wavelength microstrip line.
3. The microstrip sum and difference device according to claim 1 wherein the second input arm of said first three-branch bridge, the first output arm and the second output arm of said second three-branch bridge, the first input arm of said third three-branch bridge, and the first output arm and the second output arm of said fourth three-branch bridge are of equal electrical length.
4. The microstrip sum-difference device according to claim 1, wherein the second output arm of the first three-branch bridge is connected to the first input arm of the second three-branch bridge, the second output arm of the third three-branch bridge is connected to the second input arm of the second three-branch bridge through a quarter-wavelength microstrip line, the first output arm of the third three-branch bridge is connected to the first input arm of the fourth three-branch bridge through a quarter-wavelength microstrip line having a center frequency, the first output arm of the first three-branch bridge is connected to the second input arm of the fourth three-branch bridge, and the corner at the connection is set as a tangential angle.
5. The microstrip sum-difference device according to claim 1, wherein the first, second, third and fourth three-branch bridges are based on the same three-branch bridge model, and the electrical lengths of the branch lines and the intervals therebetween are all a quarter wavelength of the center frequency.
6. The microstrip sum-difference device according to claim 1, wherein the dielectric substrate is a single-layer printed circuit board, and a metalized via is provided in the center of the substrate to improve the isolation between the ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922298004.3U CN210926271U (en) | 2019-12-19 | 2019-12-19 | High-performance microstrip sum-difference device based on three-branch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922298004.3U CN210926271U (en) | 2019-12-19 | 2019-12-19 | High-performance microstrip sum-difference device based on three-branch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210926271U true CN210926271U (en) | 2020-07-03 |
Family
ID=71346808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922298004.3U Active CN210926271U (en) | 2019-12-19 | 2019-12-19 | High-performance microstrip sum-difference device based on three-branch bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210926271U (en) |
-
2019
- 2019-12-19 CN CN201922298004.3U patent/CN210926271U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6483397B2 (en) | Tandem six port 3:1 divider combiner | |
| US11489244B2 (en) | Spiral ultra-wideband microstrip quadrature directional coupler | |
| CN106816678B (en) | It is a kind of with any output amplitude and phase across directional coupler | |
| AU634433B2 (en) | Coplanar 3db quadrature coupler | |
| US20080079632A1 (en) | Directional coupler for balanced signals | |
| US4862120A (en) | Wideband stripline to microstrip transition | |
| CN109301419B (en) | Coplanar waveguide ultra-wideband sum-difference device | |
| KR20190088523A (en) | Circuits and Techniques for Via-Leased Beam Formers | |
| CN210926271U (en) | High-performance microstrip sum-difference device based on three-branch bridge | |
| US5982338A (en) | Rectangular coaxial line to microstrip line matching transition and antenna subarray including the same | |
| FI98418C (en) | Bypassable Wilkinson power distributor | |
| Ang et al. | A wide-band monopulse comparator with complete nulling in all delta channels throughout sum channel bandwidth | |
| CA2202364C (en) | Surface mounted directional coupler | |
| US7821353B2 (en) | Directional coupler | |
| US12087993B2 (en) | Broadband and low cost printed circuit board based 180° hybrid couplers on a single layer board | |
| US20090284326A1 (en) | Balanced hybrid coupler | |
| US4438436A (en) | Millimeter wave monopulse comparator circuit | |
| US4085391A (en) | Micro-strip to a slotted line transducer | |
| CN105811064B (en) | Gysel type power splitter based on substrate integration wave-guide | |
| CN213520263U (en) | Compact sum and difference device | |
| CN209746114U (en) | Millimeter wave sum-difference network | |
| US20230125795A1 (en) | Angle-of-arrival antenna system | |
| RU2729513C1 (en) | Stripline phase shifter | |
| US2883627A (en) | Transmission line network | |
| US8487716B1 (en) | Single-ended phase-shift network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 329, Hualang Technology Industrial Park, No. 66 Xuancheng Avenue, Zheng'an Town, Zhongmu County, Zhengzhou City, Henan Province, 450000 Patentee after: Leiji (Zhengzhou) Electronic Technology Co.,Ltd. Country or region after: China Address before: Room 504, Building 3-1, Luoyang National University Science and Technology Park, No. 2 Penglai Road, Jianxi District, Luoyang City, Henan Province, 471000 Patentee before: Luoyang Gaochuang Electronic Technology Co.,Ltd. Country or region before: China |