CN101436702A - Waveguide-microstrip line transformation and power divider - Google Patents
Waveguide-microstrip line transformation and power divider Download PDFInfo
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- CN101436702A CN101436702A CNA2008102199902A CN200810219990A CN101436702A CN 101436702 A CN101436702 A CN 101436702A CN A2008102199902 A CNA2008102199902 A CN A2008102199902A CN 200810219990 A CN200810219990 A CN 200810219990A CN 101436702 A CN101436702 A CN 101436702A
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Abstract
The invention relates to the field of waveguide-microstrip transition structure in passive devices, and discloses a waveguide-microstrip conversion and power divider which is based on a double-layer substrate and has a slot coupling structure. The waveguide-microstrip conversion and power divider comprises double-layer substrates (1, 2), a microstrip (3) positioned on the upper surface of the upper-layer substrate (1), a first grounding metal plate positioned between the upper-layer substrate (1) and the lower-layer substrate (2), and a waveguide end (7) connected with the lower surface of the lower-layer substrate (2) through a second grounding metal plate, the first grounding metal plate is provided with a slot, the lower surface of the lower-layer substrate (2) is provided with a window which has the same shape and size as those of a cavity in a waveguide tube, and a frequency adjustment unit (5) is arranged at the window. The waveguide-microstrip conversion and power divider is suitable to be used for the feeding of microstrip antenna arrays with waveguide feeding forms, and can be used as a waveguide-microstrip transformation signal distributor in a radio frequency circuit.
Description
Technical field
The present invention relates to Waveguide-microstrip line transition structure field in the passive device, relate in particular to a kind of Waveguide-microstrip line transformation and power divider.Be applicable to the usefulness of waveguide feed of micro-strip antenna array and waveguide Structure Conversion to microstrip line.
Background technology
In the society, radar sensor class device is widely used in the civilian and military field now, as burglary-resisting system, and the CAS in the field of traffic and military missile-radars system etc.
The front end modulation module of radar sensor is made up of antenna that is positioned at the device surface sensor head and the microwave circuit that is positioned at device inside usually.For low cost and the miniaturization that realizes the radar inductor, microstrip antenna is a desirable selection that places transducer open end antenna, and commonly used is micro-strip array antenna, and the microwave circuit part is then chosen usually and comprised the microwave circuit that microstrip line is formed.
Although also there are the bigger shortcoming of loss in microstrip line and the advantage that is had small-sized, light weight, is easy to make by its circuit of forming simultaneously, circuit integral body utilizes the microstrip line design can cause bigger loss fully.Therefore under such configuration, a kind of effective solution is that the main circuit transmission line uses waveguide, and the terminal of waveguide connects microstrip antenna and microwave circuit respectively, and promptly microstrip antenna and circuit mainly link by waveguide.Though it is big but can realize less loss with microstrip line phase specific volume that the reason of doing like this is waveguide, and only use waveguide can't increase device significantly as microwave transmission line volume at the hop of main circuit, design can make radar sensor under the situation that guarantees device low cost and miniaturization like this, realizes preferable performance.
Though microstrip line and waveguide are all microwave transmission line, but certain difference is arranged all on profile and transmission characteristic, so can not realize both directly linking to each other, need add the Waveguide-microstrip line transformation device in the centre, when needs are divided into two-way with output signal, must make the Waveguide-microstrip line transformation device have power dividing function again, therefore, design and have the good electrical performance and Waveguide-microstrip line transformation power divider simple in structure is very important.
Have the Waveguide-microstrip line transformation of multiple structure and the design of power divider now, the employing that has is to doing stepped processing in the waveguide, and the section that the microstrip circuit structure is inserted into waveguide broadside center line that also has is medium.Though these structures all have electric property preferably, mostly changed the internal structure of waveguide, comparatively complicated on technology realizes, also caused cost higher.
Summary of the invention
Shortcoming at prior art, the Waveguide-microstrip line transformation and the power divider that the purpose of this invention is to provide a kind of slit coupled structure based on double layer substrate, this structure need not to change waveguide and little band portion form separately, utilize paster structure to realize signal transmission and power division, thereby have simple in structure and easy machining characteristics by the slit coupling.
For achieving the above object, technical scheme of the present invention is: a kind of Waveguide-microstrip line transformation and power divider, comprise double layer substrate, at the microstrip line of top substrate layer upper surface, at first grounding plate between top substrate layer and the following laminar substrate and be connected the waveguide end of lower floor's base lower surface by second grounding plate, first grounding plate has a slit, the lower surface of following laminar substrate is provided with and the identical window of waveguide inner chamber body geomery, and the window place is provided with a frequency adjustment unit.
Corresponding waveguide end position place is around there being all plated-through holes in the following laminar substrate, and plated-through hole and metal ground plate are electrically connected; Size that described plated-through hole encloses is slightly larger than the waveguide inner chamber.
Described frequency adjustment unit be shaped as rectangle, its length that is parallel to the rectangular waveguide short side direction length of side is half of operation wavelength; Described slit be shaped as rectangle; The cross section of described waveguide end is a rectangle.
Described slit is positioned at the center of first grounding plate, and described frequency adjustment unit is positioned at the center of window; Described double layer substrate plane is parallel with the waveguide end section.
The present invention compared with prior art has following advantage and beneficial effect:
Waveguide-microstrip line transformation of the present invention and power divider, its volume is little, the needs such as feed design that can be integrated in microstrip circuit system or micro-strip array antenna easily adopt the occasion of waveguide feed, and adopt the double layer substrate structure, with respect to single layer structure, have the little band portion characteristic of simple structure of top substrate layer, this makes in its waveguide feed structure that can be integrated in microstrip circuit system or micro-strip antenna array easily.
The present invention has also adopted the slit coupling technique to realize the coupling process of electromagnetic energy, for the similar device of other same use vertical stratification designs, only there are two microstrip lines little band coupling part of the design's device, neither need increase a λ above little band plane
g/ 4 cavity, also need not increases the short circuit metallic plate that encirclement microstrip line, an area are slightly larger than the waveguide cross section, and such structure makes in the realization of product convenient, and the bigger degree of freedom is arranged in integrating process.
Under the present invention in the laminar substrate corresponding waveguide end position place around all plated-through holes are arranged, be equivalent to the continuity of intracavity structure in following laminar substrate of waveguide by plated-through hole setting all around, than the scheme of lower floor's substrate card in waveguide, have characteristics simple in structure, easy to process.Signal of the present invention is by rectangular waveguide mouth input, has the phase differences of 180 degree at the electric field of two microstrip line outputs, and therefore waveguide of the present invention also has the characteristics that inversion signal is exported to little band conversion and power divider.
The present invention can regulate actual bandwidth of operation by the following laminar substrate of selecting different-thickness, and following laminar substrate is thick more, and designed converter bandwidth of operation is wide more.The present invention has certain function expansibility, by opening the double slit crack two microstrip lines is coupled, be aided with the relevant adjustment of impedance matching after, can easily it must be expanded to Waveguide-microstrip line four-way constant power distributor.
Processing method of the present invention can adopt the paster mode to finish, and has easy machining characteristics.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention; The profile that Fig. 2 locates for A-A ' among Fig. 1.
Embodiment
Fig. 1 and Fig. 2 are a kind of embodiment of the present invention.This Waveguide-microstrip line transformation and power divider, comprise double layer substrate 1,2, be connected at the microstrip line 3 of top substrate layer 1 upper surface, at first grounding plate between top substrate layer 1 and the following laminar substrate 2 and by second grounding plate under the waveguide end 7 of laminar substrate 2 lower surfaces, first grounding plate has a slit, the lower surface of following laminar substrate 2 is provided with and the identical window of waveguide inner chamber body geomery, and the window place is provided with a frequency adjustment unit 5.With screw double layer substrate is got final product with the waveguide flange secured in alignment during actual the use.
7 inputs of signal self-waveguide end, coupled transfer between the slit at the first grounding plate place by described frequency adjustment unit 5 and top substrate layer is to described microstrip line 3, and transmit to two output directions along described microstrip line respectively, thereby realize by the conversion of waveguide, and realize the purpose that constant power distributes to the structure of microstrip line.
The position of corresponding waveguide end 7 is around there being all plated-through holes 6 in the following laminar substrate 2, and plated-through hole 6 is electrically connected with metal ground plate.Through hole radius and spacing are relevant with this conversion distributor working frequency range.Described plated-through hole 6 enclose size and be slightly larger than the waveguide inner chamber.
In the present embodiment, described frequency adjustment unit be shaped as rectangle, its length that is parallel to the rectangular waveguide short side direction length of side is half of operation wavelength, can realize the regulating action of signal frequency by changing this size dimension, adjusts another length of side and can realize the Signal Matching adjusting; Described slit be shaped as rectangle, its size is used for control signal frequency adjustment and the control of coupling amount; The cross section of described waveguide is a rectangle; Described slit is positioned at the center of first grounding plate; Described frequency adjustment unit is positioned at the center of window; Described double layer substrate plane is parallel with the waveguide cross section.
Described microstrip line is the metal tape with effective width, and its width is by the required characteristic impedance decision of transmission signal line.
Claims (7)
1, a kind of Waveguide-microstrip line transformation and power divider, it is characterized in that comprising double layer substrate (1,2), be positioned at top substrate layer (1) upper surface microstrip line (3), be positioned at first grounding plate between top substrate layer (1) and the following laminar substrate (2) and be connected the waveguide end (7) of time laminar substrate (2) lower surface by second grounding plate, first grounding plate has a slit, the lower surface of following laminar substrate (2) is provided with and the identical window of waveguide inner chamber body geomery, and the window place is provided with a frequency adjustment unit (5).
2, Waveguide-microstrip line transformation according to claim 1 and power divider, it is characterized in that: the position of corresponding waveguide end (7) is around there being all plated-through holes (6) in the following laminar substrate (2), and plated-through hole (6) is electrically connected with metal ground plate.
3, Waveguide-microstrip line transformation according to claim 2 and power divider is characterized in that: described plated-through hole (6) encloses size and is slightly larger than the waveguide inner chamber.
4, Waveguide-microstrip line transformation according to claim 1 and power divider is characterized in that: described frequency adjustment unit be shaped as rectangle, its length that is parallel to the waveguide rectangular cross section short side direction length of side is half of operation wavelength.
5, Waveguide-microstrip line transformation according to claim 2 and power divider is characterized in that: described slit be shaped as rectangle.
6, Waveguide-microstrip line transformation according to claim 5 and power divider is characterized in that: described slit is positioned at the center of first grounding plate, and described frequency adjustment unit is positioned at the center of window.
7, according to claim 1 to 6 each described Waveguide-microstrip line transformation and power divider, it is characterized in that: described double layer substrate plane is parallel with the waveguide end section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102199902A CN101436702A (en) | 2008-12-12 | 2008-12-12 | Waveguide-microstrip line transformation and power divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102199902A CN101436702A (en) | 2008-12-12 | 2008-12-12 | Waveguide-microstrip line transformation and power divider |
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| CN101436702A true CN101436702A (en) | 2009-05-20 |
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| CNA2008102199902A Pending CN101436702A (en) | 2008-12-12 | 2008-12-12 | Waveguide-microstrip line transformation and power divider |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702457B (en) * | 2009-10-30 | 2013-05-08 | 深南电路有限公司 | Microstrip antenna filter structure and preparation method thereof |
| CN103296364A (en) * | 2013-05-30 | 2013-09-11 | 中国电子科技集团公司第四十一研究所 | Novel planar transmission line |
| CN103515682A (en) * | 2013-07-24 | 2014-01-15 | 中国电子科技集团公司第五十五研究所 | Micro-strip-to-waveguide vertical transition structure achieved through multi-layer step type substrate integration waveguide |
| WO2014169417A1 (en) * | 2013-04-15 | 2014-10-23 | 中国电信股份有限公司 | Multi-aerial array of long term evolution multi-input multi-output communication system |
| CN104205483A (en) * | 2012-03-19 | 2014-12-10 | 三菱电机株式会社 | Planar circuit-waveguide converter |
| CN105261815A (en) * | 2015-10-23 | 2016-01-20 | 中国电子科技集团公司第十六研究所 | Waveguide and microwave transition circuit with adjustable working frequency |
| CN105493343A (en) * | 2014-02-14 | 2016-04-13 | 华为技术有限公司 | Planar transmission line waveguide adapter |
| CN105514556A (en) * | 2015-12-29 | 2016-04-20 | 大连楼兰科技股份有限公司 | Conversion device and conversion method between microstrip line and metal rectangular waveguide |
| CN106654543A (en) * | 2015-10-29 | 2017-05-10 | 苏州博海创业微系统有限公司 | Multilayer radiation apparatus |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN112397864A (en) * | 2020-10-21 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Integrated waveguide microstrip probe transition structure |
| CN114744390A (en) * | 2022-04-26 | 2022-07-12 | 北京华镁钛科技有限公司 | Differential waveguide power divider |
| CN114784489A (en) * | 2022-03-31 | 2022-07-22 | 华为技术有限公司 | Waveguide antenna assembly, radar, terminal and preparation method of waveguide antenna assembly |
-
2008
- 2008-12-12 CN CNA2008102199902A patent/CN101436702A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702457B (en) * | 2009-10-30 | 2013-05-08 | 深南电路有限公司 | Microstrip antenna filter structure and preparation method thereof |
| CN104205483B (en) * | 2012-03-19 | 2016-08-10 | 三菱电机株式会社 | planar circuit-waveguide converter |
| CN104205483A (en) * | 2012-03-19 | 2014-12-10 | 三菱电机株式会社 | Planar circuit-waveguide converter |
| US10014590B2 (en) | 2013-04-15 | 2018-07-03 | China Telecom Corporation Limited | Multi-antenna array for long term evolution multi-input multi-output communication system |
| WO2014169417A1 (en) * | 2013-04-15 | 2014-10-23 | 中国电信股份有限公司 | Multi-aerial array of long term evolution multi-input multi-output communication system |
| CN103296364A (en) * | 2013-05-30 | 2013-09-11 | 中国电子科技集团公司第四十一研究所 | Novel planar transmission line |
| CN103296364B (en) * | 2013-05-30 | 2015-08-26 | 中国电子科技集团公司第四十一研究所 | A kind of Novel planar transmission line |
| CN103515682B (en) * | 2013-07-24 | 2015-07-29 | 中国电子科技集团公司第五十五研究所 | Multi-step formula substrate integration wave-guide realizes micro-vertical transition structure bringing to waveguide |
| CN103515682A (en) * | 2013-07-24 | 2014-01-15 | 中国电子科技集团公司第五十五研究所 | Micro-strip-to-waveguide vertical transition structure achieved through multi-layer step type substrate integration waveguide |
| CN105493343A (en) * | 2014-02-14 | 2016-04-13 | 华为技术有限公司 | Planar transmission line waveguide adapter |
| CN105493343B (en) * | 2014-02-14 | 2018-01-09 | 华为技术有限公司 | Planar transmission line waveguide adaptor |
| CN105261815B (en) * | 2015-10-23 | 2018-03-20 | 中国电子科技集团公司第十六研究所 | A kind of waveguide with working frequency range adjustable function and microwave transition circuit |
| CN105261815A (en) * | 2015-10-23 | 2016-01-20 | 中国电子科技集团公司第十六研究所 | Waveguide and microwave transition circuit with adjustable working frequency |
| CN106654543A (en) * | 2015-10-29 | 2017-05-10 | 苏州博海创业微系统有限公司 | Multilayer radiation apparatus |
| CN105514556A (en) * | 2015-12-29 | 2016-04-20 | 大连楼兰科技股份有限公司 | Conversion device and conversion method between microstrip line and metal rectangular waveguide |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN112103608B (en) * | 2020-09-29 | 2022-02-22 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN112397864A (en) * | 2020-10-21 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Integrated waveguide microstrip probe transition structure |
| CN114784489A (en) * | 2022-03-31 | 2022-07-22 | 华为技术有限公司 | Waveguide antenna assembly, radar, terminal and preparation method of waveguide antenna assembly |
| CN114784489B (en) * | 2022-03-31 | 2024-01-16 | 华为技术有限公司 | Waveguide antenna assembly, radar, terminal and preparation method of waveguide antenna assembly |
| CN114744390A (en) * | 2022-04-26 | 2022-07-12 | 北京华镁钛科技有限公司 | Differential waveguide power divider |
| CN114744390B (en) * | 2022-04-26 | 2024-01-26 | 北京华镁钛科技有限公司 | Differential waveguide power divider |
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Application publication date: 20090520 |