CN108767406A - Microwave high-isolation multichannel cavity power divider - Google Patents
Microwave high-isolation multichannel cavity power divider Download PDFInfo
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- CN108767406A CN108767406A CN201810734597.0A CN201810734597A CN108767406A CN 108767406 A CN108767406 A CN 108767406A CN 201810734597 A CN201810734597 A CN 201810734597A CN 108767406 A CN108767406 A CN 108767406A
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- isolation
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- power
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Abstract
The present invention provides a kind of microwave high-isolation multichannel cavity power divider, and electromagnetic energy divides intracavitary through coaxial port feed-in work(, realizes that impedance matching divides output port to export with after mode conversion by work(through the stepped cylindrical of not equal altitude in cavity.Divide at chamber input port in work(and unbalanced energy signal is introduced into isolation circuit by nested microstrip line in the conductor, absorbs the high isolation characteristic between realizing each input port through isolation resistance.A variety of advantages such as this power splitter possesses compact-sized, and process and assemble is simple, and work(point/combined coefficient is high, and isolation is high, and work(point/synthesis power is big.
Description
Technical field
The invention belongs to wireless communication systems and technical field, are related to a kind of microwave high-isolation multichannel cavity power distribution
Device.
Background technology
Currently, the armies such as satellite navigation, survey of deep space, remote sensing, electronic reconnaissance, electronic countermeasure and communication technology of new generation
With or civilian wireless communication system, microwave system high requirement is proposed to the signal power of system and channel quantity.Utilize tool
There is the power splitter of high-isolation to realize the Redundancy Design of system active component, high powe design, is to realize that high performance system is important
Method.However, currently realizing that powerful scheme is mostly based on electron tube, as microwave klystron repeater and travelling-wave tubes are put
Although big device etc., this kind of device may be implemented very high output power, but operating voltage generally reaches several kilovolts, and device
Reliability is low, and weight weight, size is big, complex process, it is difficult to batch production or processing, for size, weight, Material Cost or
Yield rate has the application scenario of strict demand to be difficult to play a role.In recent years with compounds such as GaSi, InP, GaN and SiC since
The solid-state power amplifier that semi-conducting material design is realized occurs, and research and utilization microwave and millimeter wave solid-state devices is realized high-power defeated
Going out becomes hot spot, and realizing that powerful system complete machine power output becomes using solid-state circuit extensively solves above-mentioned electron tube
The important aspect of disadvantage.However up to the present, in many applications, still remain the power required by system and be far longer than list
The case where saturation output power of a solid-state power amplifier, at this time by the way that signal is divided into multichannel by power division network, respectively
Amplified by amplifier, being finally synthesizing the scheme of real-time performance power combing and high-power output becomes optional in most cases
Optimal case.
Although power distribution/synthetic technology is after decades of development, various synthetic technologys and structure continue to bring out, however
Current all kinds of synthetic schemes all have larger limitation, such as volume is big, power capacity is low.It is typically real based on waveguiding structure
Existing multichannel work(point realizes that the power of work(point is big, often bulky although work(point/combined coefficient is high, and relatively difficult to achieve each
Isolation between input port.Then process and assemble is complicated for some multi-path power dividers based on magic T structures, and needs to make specially
Matched load in practical applications to have inconvenience more.It can be seen that a kind of big work(easy to process, compact, high isolation of research
Rate multichannel power divider/synthesizer is particularly important to modern high power microwave and millimeter wave circuit system.
Invention content
It is simple, tight the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of process and assemble
Gather type, the multichannel cavity power divider of high isolation.
Technical scheme is as follows：
A kind of microwave high-isolation multichannel cavity power divider, including input/output port, work(divide cavity and micro-strip every
Three from circuit parts are, it can be achieved that the multi-path large power work(of work(branch number N >=2 divides.
The high isolation multichannel cavity power divider, wherein work(divides cavity to be realized based on cavity body structure.
Further, the high isolation multichannel cavity power divider, wherein the work(divides input and output in cavity
The cylindrical matching ladder of not equal altitude is respectively implanted at port, matching ladder center is provided with dark holes, facilitates input same with output
Axis inner wire is inserted into, and realizes quick assembling.
Further, the high isolation multichannel cavity power divider, wherein the work(divides cavity to be built into and cavity
The consistent medium of shape (polytetrafluoroethylene (PTFE)), to reduce volume and hoisting power capacity.
The high isolation multichannel cavity power divider, wherein isolation circuit draws electromagnetism by dividing from work(in cavity
Energy accesses isolation resistance realization on micro-strip dielectric-slab.
Further, the high isolation multichannel cavity power divider, wherein the micro-strip dielectric-slab of the isolation circuit
One section of coaxial inner conductor is passed through to realize by input port.
Further, the high isolation multichannel cavity power divider, wherein the microstrip circuit in the isolation circuit
By one section of microstrip line and N number of isolation resistance star-like connection.
The high isolation multichannel cavity power divider, input/output port can be exchanged and make as power combiner
With.
The high isolation multichannel cavity power divider, length, width and height are in designed frequency range centre frequency corresponding one
In a wavelength.
The high isolation multi-path power divider because power-devided circuit is realized using cavity, thus has high power and low-loss
Characteristic.
Working principle of the present invention is as follows：
The input signal of the roads N Phase amplitude-matched by after 50 Ω sub-miniature A connector feed-in input ports enter synthetic cavity (work(divides cavity),
Realize that energy merges, and exports by output port after cavity internal resistance transformation circuit.When input signal amplitude or phase not
When consistent, unbalanced excess energy is coupled to microstrip line through input port, is finally absorbed by N number of isolation resistance, therefore real
Good isolation between existing each input port.Due to the addition of isolation circuit, adjusted jointly with the impedance transformation in cavity defeated
Enter, the echoing characteristics of output port, therefore the circuit realizes good input and output matching simultaneously.It is used when as power splitter
When, input, output port need to only be exchanged, you can realize that each port possesses the energy distribution function of high-isolation.
The beneficial effects of the present invention are：
Realize a kind of microwave multi-path cavity high-isolation, high-power work(point/combiner circuit.In the circuit, by micro-strip dielectric-slab
It is nested on one section of coaxial inner conductor, and on micro-strip dielectric-slab plus star-like isolation resistance, to realize between each input port
High isolation.Work(divides in cavity in circuit realizes matched well by the cylindrical matching ladder of not equal altitude.It can be achieved at the same time defeated
Enter and optimize with the echoing characteristics of output port, and process and assemble is simple, easily realize, compact to design, work(point loss is low, to now big
The development of power microwave system is significant.
Description of the drawings
Fig. 1 is the cross-sectional view of the structure of four road cavity power power splitter of high-isolation.
Fig. 2 is four road cavity power power splitter overall schematic of high-isolation.
Fig. 3 is the S parameter curve of the four road power splitters based on compact micro coaxle structure.
Attached figure label is corresponding entitled：(1) input port, (2) output port, (3) work(divide cavity, and (4) match rank
Ladder, (5) medium substrate, (6) microstrip line, (7) isolation resistance.
Specific implementation mode
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail.
The present embodiment provides a kind of four tunnel cavity power dividers of miniaturization, and structural schematic diagram is as shown in Figure 1, the circuit
The power dividing function of 8GHz to 9GHz is realized, wherein 1 port is input port, 2,3,4 and 5 ports are that work(divides output end
Mouthful, input and output echo and isolation characteristic are as shown in Figure 2.The example realizes the input/output port in required band limits
Echo is more than 20dB, and isolation is more than 20dB between output port, and length, width and height size is respectively less than λg(8.5G)。
Claims (3)
1. a kind of microwave high-isolation multichannel cavity power divider, it is characterised in that：By input port, output port, work(point
Cavity, matching ladder, microstrip circuit and isolation resistance composition；Electromagnetic energy divides cavity through coaxle input end mouth feed-in work(, by chamber
The cylindrical matching ladder of internal not equal altitude carries out dividing output port to export by work(after impedance matching is converted with pattern；It is described defeated
Inbound port can be used as output port, and the output port can be used as input port, be used as power combiner.
2. microwave high-isolation boiler cavity power divider as described in claim 1, the microstrip circuit is via output
The uneven microwave signal of nested micro-strip export absorbs through isolation resistance to microstrip circuit and realizes output port isolation at port.
3. isolation resistance as claimed in claim 2 includes being not limited to the connection types such as star-like, triangle, annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734597.0A CN108767406A (en) | 2018-07-06 | 2018-07-06 | Microwave high-isolation multichannel cavity power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734597.0A CN108767406A (en) | 2018-07-06 | 2018-07-06 | Microwave high-isolation multichannel cavity power divider |
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| Publication Number | Publication Date |
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| CN108767406A true CN108767406A (en) | 2018-11-06 |
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| CN201810734597.0A Pending CN108767406A (en) | 2018-07-06 | 2018-07-06 | Microwave high-isolation multichannel cavity power divider |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129683A (en) * | 2019-11-25 | 2020-05-08 | 北京遥测技术研究所 | Millimeter wave high-isolation chain type power synthesis network and synthesis method |
| CN112103602A (en) * | 2020-11-05 | 2020-12-18 | 中国电子科技集团公司第九研究所 | Broadband high-frequency Faraday isolator |
| CN113258244A (en) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Rectangular waveguide microstrip 0-degree-phase-difference high-isolation broadband power divider |
| CN113644886A (en) * | 2021-06-28 | 2021-11-12 | 北京无线电测量研究所 | Ku-waveband satellite-borne power amplifier, system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105914442A (en) * | 2016-04-14 | 2016-08-31 | 安徽华东光电技术研究所 | Ku frequency band four-path radial waveguide power combiner |
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2018
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105914442A (en) * | 2016-04-14 | 2016-08-31 | 安徽华东光电技术研究所 | Ku frequency band four-path radial waveguide power combiner |
Non-Patent Citations (2)
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| KAIJUN SONG等: ""Ku-band 200-W Pulsed Power Amplifier Based on Waveguide Spatially Power-Combining Technique for Industrial Applications"", 《IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS》 * |
| 胡顺勇: ""微波毫米波平面/类平面功率合成关键技术研究"", 《中国博士学位论文全文数据库信息科技辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129683A (en) * | 2019-11-25 | 2020-05-08 | 北京遥测技术研究所 | Millimeter wave high-isolation chain type power synthesis network and synthesis method |
| CN112103602A (en) * | 2020-11-05 | 2020-12-18 | 中国电子科技集团公司第九研究所 | Broadband high-frequency Faraday isolator |
| CN113258244A (en) * | 2021-04-30 | 2021-08-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Rectangular waveguide microstrip 0-degree-phase-difference high-isolation broadband power divider |
| CN113258244B (en) * | 2021-04-30 | 2021-12-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Rectangular waveguide microstrip 0-degree-phase-difference high-isolation broadband power divider |
| CN113644886A (en) * | 2021-06-28 | 2021-11-12 | 北京无线电测量研究所 | Ku-waveband satellite-borne power amplifier, system and method |
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Application publication date: 20181106 |