CN102122747A - Microwave power distributor - Google Patents
Microwave power distributor Download PDFInfo
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- CN102122747A CN102122747A CN2010106092865A CN201010609286A CN102122747A CN 102122747 A CN102122747 A CN 102122747A CN 2010106092865 A CN2010106092865 A CN 2010106092865A CN 201010609286 A CN201010609286 A CN 201010609286A CN 102122747 A CN102122747 A CN 102122747A
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- power divider
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Abstract
The invention relates to a microwave device and discloses a microwave power distributor which is based on a waveguide technology and has a cavity structure. The technical scheme is that: the microwave power distributor comprises a rectangular waveguide cavity and a coupling cavity; the coupling cavity basically has a shape of regular quadrangular prism; the center part of one side cylindrical surface of the coupling cavity is connected and communicated with the rectangular waveguide cavity on the short circuit surface of the rectangular waveguide cavity; an even number of windows are formed on the cylindrical surface opposite to the cylindrical surface; a coupler is inserted into each window so as to couple microwave signals; the bottom surface of the regular quadrangular prism is as long as the rectangular waveguide cavity, and the height of the regular quadrangular prism is greater than the width of the rectangular waveguide cavity; the rectangular waveguide cavity is a main circuit port of the microwave power distributor; the couplers are branch circuit ports of the microwave power distributor; and all the branch circuit ports are equant ports. The microwave power distributor is used for synthesizing or distributing microwave power so as to obtain good input/output standing waves and broadband characteristics; and the microwave power distributor is easy to process and convenient to assemble.
Description
Technical field
The present invention relates to microwave device, particularly microwave power divider or synthesizer.
Background technology
In microwave regime, microwave power amplifier is the important devices that system forms.The most important index of microwave power amplifier is power output, efficient and gain.Solid state microwave power device development in recent years is swift and violent, substituted heavy in the past travelling-wave tube amplifier gradually, the semiconductor solid-state microwave device has characteristics such as volume is little, in light weight, stable height, yet that the disadvantage of solid state microwave device is a power output is relatively low.In order to obtain HIGH-POWERED MICROWAVES, often need to adopt microwave power to distribute and synthetic technology, power divider and synthesizer that Here it is uses always.
Power divider is also referred to as power splitter, divide active, passive two kinds.Be a kind of device that one road input signal energy can be divided into the equal or unequal energy output of two-way or multichannel, also can be also referred to as the power mixer this moment conversely with synthetic one tunnel output of multiple signals energy.So microwave power divider can be write as distributor/synthesizer usually, if the signal that each tributary port is assigned to identical (comprising power, amplitude, phase place etc.) then is called five equilibrium distributor/synthesizer.The bisection distributor with a main road port and two tributary ports as shown in Figure 1 can be divided into two tunnel identical signals with the signal of main road port input and export from tributary port; Quartering distributor with a main road port and four tributary ports shown in Figure 2 can be that four tunnel identical signals are exported from tributary port with the signal allocation of main road port input then.Distribution or the synthesizing from branch road to main road of microwave signal from the main road to the branch road all can produce certain loss, and loss is relevant with the power-division ratios of power divider in fact.Distribution loss as two five equilibrium power dividers is 3dB, and the distribution loss of quartering power divider is 6dB.Being used for the synthetic circuit of microwave power has a variety of, main Wilkinson power divider, Langer coupler etc. based on planar circuit, synthetic E-plane branch or the H face splitter of adopting usually of waveguide power, the synthetic mode of spatial power develops rapidly in recent years.The power distributor/synthesizer advantage of planar circuit is that volume is little, and cost is low, but loss is relatively large; Power combiner characteristics based on waveguide are that loss is minimum, but volume is often bigger.In addition, common waveguide E face or H face splitter, bandwidth is often limited bigger, can only reach 10%～20% of centre frequency usually, and range of application is limited.
Summary of the invention
Technical problem to be solved by this invention, just provide a kind of based on guide technology, have the microwave power divider of cavity body structure, can improve bandwidth, reduce the wastage.
The present invention solve the technical problem, the technical scheme that adopts is, microwave power divider, comprise square wave guide cavity and coupling cavity, described coupling cavity becomes four-prism basically, and the middle body of one lateral column face is at described square wave guide cavity terminal short circuit face place and the square wave guide cavity joins and UNICOM, and the relative cylinder of this cylinder has the even number window, insert a coupler in each window, be used to the microwave signal that is coupled; Described four-prism bottom surface length equates that with the rectangular waveguide cavity length described four-prism height is greater than square wave guide cavity width; The main road port that described square wave guide cavity is a microwave power divider, described coupler are the tributary port of microwave power divider, and all tributary ports are the five equilibrium port;
Especially, described number of windows=2;
Described microwave power divider has in the face of claiming structure, and its plane of symmetry is divided into two parts with described microwave power divider, and each part all has a window, and the described plane of symmetry is vertical with described square wave guide cavity terminal short circuit face;
Preferably, described number of windows=4;
Described microwave power divider has in the face of claiming structure, and the plane of symmetry of its 2 quadratures is divided into four parts with described microwave power divider, and each part all has a window, and the described plane of symmetry is vertical with described waveguide cavity terminal short circuit face;
Further, described waveguide cavity and coupling cavity are overall structure;
Concrete, described waveguide cavity and coupling cavity are made of metal material;
Recommend, described coupler has same structure and shape;
Concrete, described coupler comprises probe and match circuit;
Concrete, described probe and match circuit are made of the microstrip line that is produced on the ceramic substrate.
The invention has the beneficial effects as follows, the combined coefficient height, the insertion loss is little, can obtain good input and output standing wave and broadband character, and process simple, easy to assembly.The present invention can realize that waveguide finish power division to microstrip transition in, perhaps finishes power when taking waveguide transition to and synthesizes little.
Description of drawings
Fig. 1 is a bisection distributor schematic diagram;
Fig. 2 is a quartering distributor schematic diagram;
Fig. 3 is the structural representation (stereogram) of embodiment 1;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is the left view of Fig. 3;
Fig. 7 is the coupler structure schematic diagram;
Fig. 8 is that the small-signal of the distributor Ka wave band of embodiment inserts the loss analogous diagram;
Fig. 9 is the input/output terminal oral reflex analogous diagram of the distributor Ka wave band of embodiment;
Figure 10 is the structural representation (stereogram) of embodiment 2.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
Microwave power divider of the present invention adopts the synthetic and distribution technique of spatial power, and the microwave power divider agent structure comprises the coupler of installing in waveguide cavity and coupling cavity and the coupling cavity.Because waveguide cavity is the square wave guide cavity, coupling cavity of the present invention is shaped as four-prism, considers the microwave transmission characteristic and is convenient to processing, and the present invention has carried out chamfered to the rib of four-prism, but its shape still becomes four-prism basically.One lateral column face middle body of four-prism joins at described square wave guide cavity terminal short circuit face place and square wave guide cavity, make waveguide cavity and coupling cavity constitute the cavity body structure of an integral body, relative cylinder at this cylinder has the even number window, and coupler inserts in the window, is used to the microwave signal that is coupled.The four-prism bottom surface length that constitutes coupling cavity among the present invention equates that with the rectangular waveguide cavity length four-prism height is greater than square wave guide cavity width, and it is equal fully that it exceeds square wave guide cavity two parts up and down.Microwave power divider of the present invention is the five equilibrium distributor, the square wave guide cavity is the main road port of microwave power divider, the even number coupler is the tributary port of microwave power divider, and these tributary ports all are the five equilibrium ports, and they equate from the signal of square wave guide cavity coupling.Microwave power divider of the present invention, its cavity body structure adopt metal material (as copper etc.), are made by integrated Precision Machining, and coupler then adopts the method for microfabrication, is made of the microstrip line that is made on the ceramic substrate.
Referring to Fig. 3～Fig. 6, the microwave power divider that this is routine is quartering distributor, its cavity body structure comprises square wave guide cavity 1 and coupling cavity 2, and coupling cavity 2 is a four-prism, and its four ribs have carried out chamfered and the comparison slyness that becomes, but keep the basic configuration of four-prism, see Fig. 3 and Fig. 5.The middle body of one lateral column face of coupling cavity 2 joins at square wave guide cavity 1 terminal short circuit face place and square wave guide cavity 1 and constitutes an integral body, and square wave guide cavity 1 and coupling cavity 2 complete UNICOMs.Offside cylinder at coupling cavity 2 these cylinders has 4 windows, inserts a coupler 3 in each window, is used to the microwave signal that is coupled.This routine microwave power divider has in the face of claiming structure, the plane of symmetry of its 2 quadratures (dotted line P and Q among Fig. 4) is divided into four parts with this routine microwave power divider, each part all has a coupler 3,4 couplers 3 have same structure and shape, its distribution on coupling cavity 2 fronts also has symmetry, the microwave signal of square wave guide cavity 1 input can be divided into four tunnel signal outputs that equate, otherwise perhaps, the microwave signal with 4 coupler inputs is coupled to 1 synthetic one tunnel output of square wave guide cavity.2 quadrature plane of symmetry P among Fig. 4 are vertical with square wave guide cavity 1 terminal short circuit face with Q.As seen from Figure 5, the four-prism bottom surface length that constitutes this routine coupling cavity 2 equates that with the length b of square wave guide cavity 1 the four-prism height is greater than the width e of square wave guide cavity 1, and its two ends exceed f respectively, as shown in Figure 6.The main road port that this routine square wave guide cavity 1 is a microwave power divider, 4 couplers 3 are the quartering tributary port of microwave power divider.Square wave guide cavity 1 that this is routine and coupling cavity 2 adopt metal material, are made into incorporate overall structure through Precision Machining.4 couplers of this example 3 all adopt the microstrip line that is produced on the ceramic substrate to constitute, as shown in Figure 7.The part of inserting in the coupling cavity 2 is a probe 30, and the microstrip line 31 that is connected with probe 30 can match the characteristic impedance of coupler 50 Ω normal impedances for match circuit, is convenient to be connected with the external circuit coupling.4 couplers of this example are divided into two-layer up and down, and the one side that is manufactured with microstrip line on its ceramic substrate disposes relatively, and the microstrip line that promptly is positioned among Fig. 3 on 2 coupler 3 ceramic substrates on upper strata is downward, and the microstrip line on 2 coupler 3 ceramic substrates of lower floor upwards.The microstrip line part of 2 couplers 3 on upper strata is invisible in Fig. 5, so be represented by dotted lines, same, the part of inserting in the coupling cavity also is expressed as dotted line.Among Fig. 3, the part in the middle of the two-layer coupler 3 is the shielding box 4 of coupler 3, mainly plays shielding action, also is used to support coupler 3.
The concrete physical dimension of this routine square wave guide cavity 1 can be made with reference to the concerned countries standard according to the concrete operating frequency of microwave power divider, comprises the width e of square wave guide cavity and length b etc.The bottom surface physical dimension of coupling cavity 2 four-prisms and height thereof can be determined according to the corresponding techniques index, comprise frequency range, insert loss, standing-wave ratio, power, coupling coefficient etc.The size of coupler probe, as the width and the length of probe, general according to close coupling ability, the less insertion loss and the requirement of input and output standing-wave ratio are determined.
As can be seen, in 32GHz to 39GHz frequency range, the insertion loss is all smaller from the analogous diagram of Fig. 8.Four curves among the figure are owing to lean on very closely, and some places overlap fully, can not offer an explanation clearly, but above-mentioned conclusion is clearly.Input and output in 32GHz to 39GHz frequency range reflection is all lower as can be seen from the analogous diagram of Fig. 9.Therefore, illustrate that this structure has embodied broadband, low-loss, high efficiency characteristic.
This routine microwave power divider number of windows is 2, and coupler also is 2 certainly, as shown in figure 10.This is a bisection distributor, has in the face of claiming structure, and its plane of symmetry is vertical with waveguide cavity terminal short circuit face, and this routine microwave power divider is divided into two parts, and each part all has a window.2 couplers are vertical configuration relation among Figure 10, and the microstrip line on the top coupler ceramic substrate is downward, and the microstrip line on the following coupler ceramic substrate upwards.Obviously, 2 couplers also can adopt the structure of landscape configuration among Figure 10, and the microstrip line on its coupler ceramic substrate disposes in opposite directions.
Claims (10)
1. microwave power divider, comprise square wave guide cavity and coupling cavity, described coupling cavity becomes four-prism basically, the middle body of one lateral column face is at described square wave guide cavity terminal short circuit face place and the square wave guide cavity joins and UNICOM, the relative cylinder of this cylinder has the even number window, insert a coupler in each window, be used to the microwave signal that is coupled; Described four-prism bottom surface length equates that with the rectangular waveguide cavity length described four-prism height is greater than square wave guide cavity width; The main road port that described square wave guide cavity is a microwave power divider, described coupler are the tributary port of microwave power divider, and all tributary ports are the five equilibrium port.
2. microwave power divider according to claim 1 is characterized in that, described number of windows=2.
3. microwave power divider according to claim 2, it is characterized in that described microwave power divider has in the face of claiming structure, its plane of symmetry is divided into two parts with described microwave power divider, each part all has a window, and the described plane of symmetry is vertical with described waveguide cavity terminal short circuit face.
4. microwave power divider according to claim 1 is characterized in that, described number of windows=4.
5. microwave power divider according to claim 4, it is characterized in that, described microwave power divider has in the face of claiming structure, the plane of symmetry of its 2 quadratures is divided into four parts with described microwave power divider, each part all has a window, and the described plane of symmetry is vertical with described square wave guide cavity terminal short circuit face.
6. according to any described microwave power divider of claim 1～5, it is characterized in that described square wave guide cavity and coupling cavity are overall structure.
7. microwave power divider according to claim 6 is characterized in that, described square wave guide cavity and coupling cavity are made of metal material.
8. according to any described microwave power divider of claim 1～7, it is characterized in that described coupler has same structure and shape.
9. microwave power divider according to claim 8 is characterized in that described coupler comprises probe and match circuit.
10. microwave power divider according to claim 9 is characterized in that described probe and match circuit are made of the microstrip line that is produced on the ceramic substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106092865A CN102122747A (en) | 2010-12-28 | 2010-12-28 | Microwave power distributor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106092865A CN102122747A (en) | 2010-12-28 | 2010-12-28 | Microwave power distributor |
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| CN102122747A true CN102122747A (en) | 2011-07-13 |
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| CN2010106092865A Pending CN102122747A (en) | 2010-12-28 | 2010-12-28 | Microwave power distributor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337684A (en) * | 2013-06-18 | 2013-10-02 | 成都赛纳赛德科技有限公司 | Compact waveguide power divider |
| CN103943926A (en) * | 2014-05-08 | 2014-07-23 | 成都雷电微力科技有限公司 | Double-probe waveguide |
| CN103956552A (en) * | 2014-04-18 | 2014-07-30 | 中国科学院微电子研究所 | Microwave power distributor |
| CN104167585A (en) * | 2014-07-30 | 2014-11-26 | 西北核技术研究所 | Microwave power distributor, microwave power synthesizer and microwave power distribution synthesizer |
| CN106450618A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Filter port coupling structure and waveguide duplexer common port coupling structure |
| CN117254234A (en) * | 2023-11-20 | 2023-12-19 | 南京纳特通信电子有限公司 | High-power waveguide conversion device, chip and power amplifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4008438A (en) * | 1974-10-28 | 1977-02-15 | Hitachi, Ltd. | Rat-race mixer circuit |
| CN101242020A (en) * | 2008-02-29 | 2008-08-13 | 电子科技大学 | Mm wave 3dB power distribution/merging network |
-
2010
- 2010-12-28 CN CN2010106092865A patent/CN102122747A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4008438A (en) * | 1974-10-28 | 1977-02-15 | Hitachi, Ltd. | Rat-race mixer circuit |
| CN101242020A (en) * | 2008-02-29 | 2008-08-13 | 电子科技大学 | Mm wave 3dB power distribution/merging network |
Non-Patent Citations (1)
| Title |
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| 赵晨曦: "Ka波段空间功率合成式放大器的研制", 《CNKI优秀硕士学位论文全文库》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337684A (en) * | 2013-06-18 | 2013-10-02 | 成都赛纳赛德科技有限公司 | Compact waveguide power divider |
| CN103337684B (en) * | 2013-06-18 | 2015-08-12 | 成都赛纳赛德科技有限公司 | Compact waveguide power divider |
| CN103956552A (en) * | 2014-04-18 | 2014-07-30 | 中国科学院微电子研究所 | Microwave power distributor |
| CN103943926A (en) * | 2014-05-08 | 2014-07-23 | 成都雷电微力科技有限公司 | Double-probe waveguide |
| CN104167585A (en) * | 2014-07-30 | 2014-11-26 | 西北核技术研究所 | Microwave power distributor, microwave power synthesizer and microwave power distribution synthesizer |
| CN104167585B (en) * | 2014-07-30 | 2015-07-01 | 西北核技术研究所 | Microwave power distributor, microwave power synthesizer and microwave power distribution synthesizer |
| CN106450618A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Filter port coupling structure and waveguide duplexer common port coupling structure |
| CN117254234A (en) * | 2023-11-20 | 2023-12-19 | 南京纳特通信电子有限公司 | High-power waveguide conversion device, chip and power amplifier |
| CN117254234B (en) * | 2023-11-20 | 2024-01-30 | 南京纳特通信电子有限公司 | High-power waveguide conversion device, chip and power amplifier |
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Application publication date: 20110713 |