CN103956552A - Microwave power distributor - Google Patents
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- CN103956552A CN103956552A CN201410156412.4A CN201410156412A CN103956552A CN 103956552 A CN103956552 A CN 103956552A CN 201410156412 A CN201410156412 A CN 201410156412A CN 103956552 A CN103956552 A CN 103956552A
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- 230000008878 coupling Effects 0.000 claims abstract description 42
- 238000010168 coupling process Methods 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 239000000919 ceramic Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 abstract description 6
- 230000037431 insertion Effects 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
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Abstract
The invention discloses a microwave power distributor, which comprises a coupling cavity, a rectangular waveguide cavity and even number of couplers, wherein the coupling cavity and the rectangular waveguide cavity are mutually communicated into a whole, the even number of couplers are coupled to the coupling cavity, the coupling cavity is in a regular quadrangular prism shape, the central part of one side surface of the regular quadrangular prism is connected and communicated with the rectangular waveguide cavity at the position of a terminal short circuit surface of the rectangular waveguide cavity, the opposite side surface of the side surface is provided with even number of windows, and each window is coupled with one coupler for coupling microwave signals; the rectangular waveguide cavity is a main branch port of the microwave power divider, the even number of couplers are branch ports of the microwave power divider, and all the branch ports are equal-division ports. The microwave power divider provided by the invention has the advantages of high synthesis efficiency, small insertion loss, simple processing and convenient assembly, can obtain good input and output standing waves and broadband characteristics, and can complete power distribution while realizing transition from a waveguide to a microstrip or complete power synthesis while realizing transition from the microstrip to the waveguide.
Description
Technical field
The present invention relates to microwave device technical field, particularly a kind of microwave power divider.
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, efficiency and gain.Solid state microwave power device development is in recent years swift and violent, substituted gradually the travelling-wave tube amplifier of heaviness in the past, semiconductor solid-state microwave device has that volume is little, lightweight, stability high, yet that the disadvantage of solid state microwave device is power output is relatively low.In order to obtain HIGH-POWERED MICROWAVES, often need to adopt microwave power to distribute and synthetic technology, Here it is conventional power divider and synthesizer.
Power divider is also referred to as power splitter, minute active, passive two kinds is that a kind of Neng Jiang mono-road input signal energy is divided into two-way or multichannel equates or the device of unequal energy output, also can be conversely by the synthetic road output of multiple signals energy, now also referred to as power combiner device.So microwave power divider can be write as distributor/synthesizer conventionally, if the signal that each tributary port is assigned to identical (comprising power, amplitude, phase place etc.) is called decile distributor/synthesizer.
The bisection distributor with a main road port and two tributary ports as shown in Figure 1, can be divided into the identical signal in two tunnels by the signal of main road port input and export from tributary port; The quartering distributor with a main road port and four tributary ports shown in Fig. 2, can be assigned as the identical signal in four tunnels by the signal of main road port input and export from tributary port.
Distribution or the synthesizing from branch road to main road of microwave signal from main road to branch road, all can produce certain loss, and loss is relevant with the power-division ratios of power divider in fact.If the distribution loss of two decile power dividers is 3dB, the distribution loss of quartering power divider is 6dB.
For the synthetic circuit of microwave power, have a variety of, main Wilkinson power divider of take planar circuit, Langer coupler etc. are as main, synthetic E-plane branch or the H face splitter of conventionally adopting 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 feature based on waveguide is that loss is minimum, but volume is often larger.In addition, common waveguide E face or H face splitter, bandwidth is often limited larger, conventionally can only reach 10%～20% of centre frequency, and range of application is limited.
Summary of the invention
In view of this, main purpose of the present invention be to provide a kind of based on guide technology, there is the microwave power divider of cavity body structure, to improve bandwidth, reduce the wastage.
For achieving the above object, the invention provides a kind of microwave power divider, this microwave power divider comprises be interconnected all-in-one-piece coupling cavity and square wave guide cavity, and the even number coupler that is coupled to coupling cavity, wherein: coupling cavity profile is four-prism shape, the middle body of one side of this four-prism joins and is communicated with square wave guide cavity at square wave guide cavity terminal short circuit face place, in the opposite flank of this side, have even number window, in each window, couple one for the coupler of the microwave signal that is coupled; Square wave guide cavity is the main road port of this microwave power divider, the tributary port that even number coupler is this microwave power divider, and all tributary ports are decile port.
In such scheme, the bottom surface length of the coupling cavity of described four-prism shape equates with square wave guide cavity side length, and the coupling cavity side height of four-prism shape is greater than square wave guide cavity lateral width.
In such scheme, the side that described coupling cavity is coupled with coupler has face symmetrical structure, and its plane of symmetry is mutually vertical with square wave guide cavity terminal short circuit face.
In such scheme, described coupling cavity and square wave guide cavity are one-body molded by metal material.
In such scheme, described coupler has identical structure and shape, comprises probe and match circuit, and probe and match circuit consist of the microstrip line being produced on ceramic substrate.
In such scheme, described coupler is divided into two-layer up and down, and the one side that is manufactured with micro-tape on its ceramic substrate configures relatively, and the part in the middle of two-layer coupler is provided with shielding box.
In such scheme, the side of described coupler has 2 windows, and the plane of symmetry of this side is divided into two parts by described microwave power divider, and every part has 1 window.
In such scheme, the side of described coupler has 4 windows, and the plane of symmetry of 2 quadratures of this side is divided into four parts by described microwave power divider, and every part has 1 window
The invention has the beneficial effects as follows:
Microwave power divider provided by the invention, owing to adopting space electromagnetic wave synthetic, electromagnetic wave is in the transmission of space, and loss is very little, and traditional microstrip line synthetic technology, the loss that microstrip line produces increases more in high-frequency range loss especially; In synthetic with time space electromagnetic wave, if the synthetic branch road of wall scroll breaks down, can not affect the combined coefficient of other branch roads, and it is synthetic for micro-band of traditional sense, the damage of wall scroll branch road will affect the mismatch of other branch roads, thereby makes whole system paralysis, less stable; Last point, this synthetic technology in space, in the scope of allowing at waveguide mouth, can increase branch road quantity, because it is irrelevant with other branch road to mention the synthetic of space above, so along with the increase of the number of plies, combined coefficient is certain, and traditional transmission line synthetic method is along with the increase of branch road, combined coefficient sharply reduces, so its expansion is quite limited.So microwave power divider combined coefficient provided by the invention is high, insertion loss is little, can obtain good input and output standing wave and broadband character, and processes simple, easy to assembly.
In addition, microwave power divider provided by the invention, owing to adopting electromagnetic wave synthesis mode, having adopted antenna to make signal is electromagnetic wave and contrary process from microstrip transitions, the position of antenna and the quantity of antenna have determined that each antenna accepts electromagnetic size, thereby complete cleverly synthetic and assignment, thus can to microstrip transition in, complete power division realizing waveguide, or complete power when taking waveguide transition to and synthesize micro-.
Accompanying drawing explanation
Fig. 1 halves the schematic diagram of distributor in prior art;
Fig. 2 is the schematic diagram of quartering distributor in prior art;
Fig. 3 is according to the structural representation of the microwave power divider of first embodiment of the invention (stereogram);
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 structural representation of coupler in Fig. 3;
Fig. 8 is microwave power divider according to the first embodiment of the invention small-signal insertion loss analogous diagram to Ka wave band;
Fig. 9 is microwave power divider according to the first embodiment of the invention input/output port reflection simulating figure to Ka wave band;
Figure 10 is according to the structural representation of the microwave power divider of second embodiment of the invention (stereogram).
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Microwave power divider provided by the invention adopts spatial power to synthesize and distribution technique, comprise be interconnected all-in-one-piece coupling cavity and square wave guide cavity, and the even number coupler that is coupled to coupling cavity, wherein: coupling cavity profile is four-prism shape, the middle body of one side of this four-prism joins and is communicated with square wave guide cavity at square wave guide cavity terminal short circuit face place, in the opposite flank of this side, have even number window, in each window, couple one for the coupler of the microwave signal that is coupled; Square wave guide cavity is the main road port of this microwave power divider, the tributary port that even number coupler is this microwave power divider, and all tributary ports are decile port.
Coupling cavity of the present invention is shaped as four-prism, considers 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 substantially.One side middle body of four-prism joins at described square wave guide cavity terminal short circuit face place and square wave guide cavity, makes waveguide cavity and coupling cavity form a whole cavity body structure.In the opposite flank of this side, have even number window, coupler inserts in window, for the microwave signal that is coupled.
In the present invention, the bottom surface length of the coupling cavity of four-prism shape equates with square wave guide cavity side length, and the coupling cavity side height of four-prism shape is greater than square wave guide cavity lateral width, and its exceed square wave guide cavity upper and lower two part completely equal.
Microwave power divider of the present invention is decile distributor, square wave guide cavity is the main road port of microwave power divider, even number coupler is the tributary port of microwave power divider, and these tributary ports are all decile ports, and they equate from the signal of square wave guide cavity coupling.
Microwave power divider of the present invention, its cavity body structure adopts metal material (as copper etc.), by integrated Precision Machining, is made.Coupler adopts the method for microfabrication, and coupler has identical structure and shape, comprises probe and match circuit, and probe and match circuit consist of the microstrip line being produced on ceramic substrate.Coupler is divided into two-layer up and down, and the one side that is manufactured with micro-tape on its ceramic substrate configures relatively, and the part in the middle of two-layer coupler is provided with shielding box.
The side that coupling cavity is coupled with coupler has face symmetrical structure, and its plane of symmetry is mutually vertical with square wave guide cavity terminal short circuit face.When the side of coupler has 2 windows, the plane of symmetry of this side is divided into two parts by described microwave power divider, and every part has 1 window.When the side of coupler has 4 windows, the plane of symmetry of 2 quadratures of this side is divided into four parts by described microwave power divider, and every part has 1 window.
Embodiment 1
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 four-prism, and its four ribs have carried out chamfered and become rounder and more smooth, 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 and forms an integral body at square wave guide cavity 1 terminal short circuit face place and square wave guide cavity 1, and square wave guide cavity 1 and the complete UNICOM of coupling cavity 2.Offside cylinder at coupling cavity 2 these cylinders has 4 windows, inserts a coupler 3, for the microwave signal that is coupled in each window.This routine microwave power divider has face symmetrical structure, the plane of symmetry of its 2 quadratures (dotted line P and Q in Fig. 4) is divided into four parts by this routine microwave power divider, every part 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 the equal signal output in four tunnels, otherwise or, the microwave signal of 4 coupler inputs is coupled to the synthetic road output of square wave guide cavity 1.2 Symmetric Orthogonal face P in 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 forms this routine coupling cavity 2 equates with the length b of square wave guide cavity 1, and four-prism height is greater than the width e of square wave guide cavity 1, and its two ends exceed respectively f, as shown in Figure 6.The main road port that this routine square wave guide cavity 1 is microwave power divider, 4 quartering tributary ports that coupler 3 is microwave power divider.The square wave guide cavity 1 that this is routine and coupling cavity 2 adopt metal material, through Precision Machining, are made into integrated overall structure.4 couplers of this example 3 all adopt the microstrip line being produced on ceramic substrate to form, as shown in Figure 7.The part of inserting in coupling cavity 2 is probe 30, and the microstrip line 31 being connected with probe 30, for match circuit, can match the characteristic impedance of coupler 50 Ω normal impedances, is convenient to be connected with 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 configures relatively, and the microstrip line being positioned in 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 coupling cavity is also expressed as dotted line.In Fig. 3, the part in the middle of two-layer coupler 3 is the shielding box 4 of coupler 3, mainly plays shielding action, also for supporting coupler 3.
The concrete physical dimension of this routine square wave guide cavity 1, can make with reference to concerned countries standard according to the specific works 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 determine according to corresponding technical indicator, comprises frequency range, insertion loss, standing-wave ratio, power, coupling coefficient etc.The size of coupler probe, as the width of probe and length, general according to close coupling ability, the requirement of less insertion loss and input and output standing-wave ratio is determined.
From the analogous diagram of Fig. 8, can find out, in 32GHz to 39GHz frequency range, insertion loss is all smaller.In figure, four curves are owing to leaning on very closely, and some places overlap completely, can not offer an explanation clearly, but above-mentioned conclusion is clearly.From the analogous diagram of Fig. 9, can find out that the input and output reflection in 32GHz to 39GHz frequency range is all lower.Therefore, illustrate that this structure has embodied broadband, low-loss, high efficiency characteristic.
Embodiment 2
This routine microwave power divider number of windows is 2, and coupler is also 2 certainly, as shown in figure 10.This is a bisection distributor, has face symmetrical 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 every part has a window.In Figure 10,2 couplers are longitudinal configuration relation, and the microstrip line on coupler ceramic substrate is above downward, and the microstrip line on coupler ceramic substrate below upwards.Obviously, in Figure 10,2 couplers also can adopt the structure of landscape configuration, and the microstrip line on its coupler ceramic substrate configures in opposite directions.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a microwave power divider, is characterized in that, this microwave power divider comprises be interconnected all-in-one-piece coupling cavity and square wave guide cavity, and the even number coupler that is coupled to coupling cavity, wherein:
Coupling cavity profile is four-prism shape, the middle body of one side of this four-prism joins and is communicated with square wave guide cavity at square wave guide cavity terminal short circuit face place, in the opposite flank of this side, have even number window, in each window, couple one for the coupler of the microwave signal that is coupled;
Square wave guide cavity is the main road port of this microwave power divider, the tributary port that even number coupler is this microwave power divider, and all tributary ports are decile port.
2. microwave power divider according to claim 1, is characterized in that, the bottom surface length of the coupling cavity of described four-prism shape equates with square wave guide cavity side length, and the coupling cavity side height of four-prism shape is greater than square wave guide cavity lateral width.
3. microwave power divider according to claim 1, is characterized in that, the side that described coupling cavity is coupled with coupler has face symmetrical structure, and its plane of symmetry is mutually vertical with square wave guide cavity terminal short circuit face.
4. microwave power divider according to claim 1, is characterized in that, described coupling cavity and square wave guide cavity are one-body molded by metal material.
5. microwave power divider according to claim 1, is characterized in that, described coupler has identical structure and shape, comprises probe and match circuit, and probe and match circuit consist of the microstrip line being produced on ceramic substrate.
6. microwave power divider according to claim 1, is characterized in that, described coupler is divided into two-layer up and down, and the one side that is manufactured with micro-tape on its ceramic substrate configures relatively, and the part in the middle of two-layer coupler is provided with shielding box.
7. microwave power divider according to claim 1, is characterized in that, the side of described coupler has 2 windows, and the plane of symmetry of this side is divided into two parts by described microwave power divider, and every part has 1 window.
8. microwave power divider according to claim 1, is characterized in that, the side of described coupler has 4 windows, and the plane of symmetry of 2 quadratures of this side is divided into four parts by described microwave power divider, and every part has 1 window.
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| CN201410156412.4A CN103956552A (en) | 2014-04-18 | 2014-04-18 | Microwave power distributor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410156412.4A CN103956552A (en) | 2014-04-18 | 2014-04-18 | Microwave power distributor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058408A (en) * | 2016-08-17 | 2016-10-26 | 中国电子科技集团公司第四十研究所 | Novel waveguide coaxial power divider |
| CN106581863A (en) * | 2016-11-23 | 2017-04-26 | 镇江步云电子有限公司 | Power distributor for microwave therapeutic instrument |
| CN107275738A (en) * | 2017-06-14 | 2017-10-20 | 电子科技大学 | Waveguide-microbelt power combiner based on magnetic coupling principle |
| CN107342447A (en) * | 2017-06-01 | 2017-11-10 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Millimeter wave high density spatial power synthesis network |
| CN109687083A (en) * | 2018-12-20 | 2019-04-26 | 南京邮电大学 | Two road power splitter of magnetic pumping millimeter waveguide |
| CN116759777A (en) * | 2023-06-05 | 2023-09-15 | 电子科技大学 | Three-way microwave power distribution/synthesizer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102122747A (en) * | 2010-12-28 | 2011-07-13 | 四川龙瑞微电子有限公司 | Microwave power distributor |
| US8228007B2 (en) * | 2009-12-24 | 2012-07-24 | Chung-Shan Institute Of Science And Technology | Microwave supplying apparatus and microwave plasma system |
| CN102810706A (en) * | 2012-08-28 | 2012-12-05 | 无锡创元电子科技有限公司 | Low-loss low-profile microwave power divider |
-
2014
- 2014-04-18 CN CN201410156412.4A patent/CN103956552A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8228007B2 (en) * | 2009-12-24 | 2012-07-24 | Chung-Shan Institute Of Science And Technology | Microwave supplying apparatus and microwave plasma system |
| CN102122747A (en) * | 2010-12-28 | 2011-07-13 | 四川龙瑞微电子有限公司 | Microwave power distributor |
| CN102810706A (en) * | 2012-08-28 | 2012-12-05 | 无锡创元电子科技有限公司 | Low-loss low-profile microwave power divider |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058408A (en) * | 2016-08-17 | 2016-10-26 | 中国电子科技集团公司第四十研究所 | Novel waveguide coaxial power divider |
| CN106058408B (en) * | 2016-08-17 | 2019-06-28 | 中国电子科技集团公司第四十一研究所 | A kind of coaxial power splitter of novel waveguide |
| CN106581863A (en) * | 2016-11-23 | 2017-04-26 | 镇江步云电子有限公司 | Power distributor for microwave therapeutic instrument |
| CN107342447A (en) * | 2017-06-01 | 2017-11-10 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Millimeter wave high density spatial power synthesis network |
| CN107275738A (en) * | 2017-06-14 | 2017-10-20 | 电子科技大学 | Waveguide-microbelt power combiner based on magnetic coupling principle |
| CN109687083A (en) * | 2018-12-20 | 2019-04-26 | 南京邮电大学 | Two road power splitter of magnetic pumping millimeter waveguide |
| CN116759777A (en) * | 2023-06-05 | 2023-09-15 | 电子科技大学 | Three-way microwave power distribution/synthesizer |
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