CN102709659A - Rectangular-waveguide impedance transducer - Google Patents
Rectangular-waveguide impedance transducer Download PDFInfo
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- CN102709659A CN102709659A CN201210201062XA CN201210201062A CN102709659A CN 102709659 A CN102709659 A CN 102709659A CN 201210201062X A CN201210201062X A CN 201210201062XA CN 201210201062 A CN201210201062 A CN 201210201062A CN 102709659 A CN102709659 A CN 102709659A
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Abstract
The invention discloses a rectangular-waveguide impedance transducer which comprises a short rectangular waveguide, a high rectangular waveguide, and at least two connection rectangular waveguide sections connected with the short rectangular waveguide and the high rectangular waveguide, wherein the connection rectangular waveguide sections are connected in pair, and the height of the short rectangular waveguide is smaller than the height of the high rectangular waveguide. The rectangular-waveguide impedance transducer has the beneficial effects that the connection surface of each rectangular waveguide has larger non-continuity, so the rectangular-waveguide impedance transducer can be enabled to satisfy the design requirements on certain reflection factors within a frequency band, the lengths of the connection rectangular waveguide sections are smaller than 1/6 of the waveguide wavelengths of the TE10 dominant modes of the connection waveguide sections at the maximum frequency part of the working frequency band, and the rectangular-waveguide impedance transducer has a small structure.
Description
Technical field
The present invention relates to a kind of rectangular-waveguide impedance transducer, particularly a kind of compact rectangular-waveguide impedance transducer of forming by the alternate rectangular waveguide of height.
Background technology
Between the different rectangular waveguide of two joint characteristic impedances, add quarter wavelength impedance transducer, and then can realize impedance matching.For the broadening working band, common practice both domestic and external is to add the more piece impedance transformer, theoretically; The progression of more piece converter is many more; Its coupling frequency band is wide more, because of n joint converter has n transforming section, (n+1) individual joint face, (n+1) individual reflected wave is arranged correspondingly; When these reflected waves turn back to converter top; Superimposed with certain phase place (depending on its progressive error) and amplitude each other, the result of numerous reflected wave stacks that amplitude is very little, phase place is different always has some ripples and cancels each other out or partial offset, thereby makes total reflected wave in the frequency band of broad, keep less value.When the major defect of this converter is frequency band broadening, the increase of size and the raising of cost.
Summary of the invention
The object of the present invention is to provide a kind of rectangular-waveguide impedance transducer of compact.
To achieve these goals; The technical scheme that the present invention adopts is following: a kind of rectangular-waveguide impedance transducer; Comprise short rectangular waveguide, high rectangular waveguide, and at least 2 joints connect short rectangular waveguides and high rectangular waveguide be connected the rectangular waveguide section; Said connection rectangular waveguide section interconnects in twos, and the height of short rectangular waveguide is less than the height of high rectangular waveguide.
Because be impedance transformer, so the inevitable height less than high rectangular waveguide of the height of short rectangular waveguide in the present invention, otherwise also can realize.
Further, in order to realize capacitance structure, the height that is connected the rectangular waveguide section that links to each other with short rectangular waveguide is greater than the height of short rectangular waveguide.
The height that is connected the rectangular waveguide section that links to each other with high rectangular waveguide is less than the height of high rectangular waveguide.
Its height difference also can realize conversely.
To high rectangular waveguide direction, the height height of all connection rectangular waveguide sections is alternate from short rectangular waveguide, and adjacent two connect the difference A that there is height in the rectangular waveguide section, A >=30%.Promptly connect in the rectangular waveguide sections at adjacent two, high near the aspect ratio of the connection rectangular waveguide section of short rectangular waveguide near the height of the connection rectangular waveguide section of high rectangular waveguide, promptly there is difference in height between them, its difference in height is A.In order to reduce the joint number that connects the rectangular waveguide section; Reach the purpose of miniaturization impedance transformer design; Two wherein adjacent differences in height that connect the rectangular waveguide section must have individual higher value, form a sudden change, thereby the joint number of the connection rectangular waveguide section that needs can reduce promptly.Draw through experimental study; Difference in height A is 30% o'clock, is preferable states, and promptly the aspect ratio near the connection rectangular waveguide section of short rectangular waveguide is high by 30% near the height of the connection rectangular waveguide section of high rectangular waveguide; Fig. 3 is the contrast table of joint number and difference in height; Difference in height A among the present invention is 30% o'clock, jumping phenomenon occurs, and the joint number that promptly connects the rectangular waveguide section diminishes.At difference in height A is 10% between 30% the time, and the joint number of the connection rectangular waveguide section of use is basically all more than tens joints, when difference in height A is 30%; Joint number becomes 4 joints; Simultaneously other parameters are unaffected, therefore with difference in height A >=30% o'clock, help the miniaturization Design of waveguide impedance transformer.
The length of said connection rectangular waveguide section is B, and at the highest frequency place of working frequency range, this connects the guide wavelength C of the TE10 mould of rectangular waveguide section, and B≤C/6 make that the present invention can be compacter.
Further, in order to reduce volume of the present invention, from short rectangular waveguide to high rectangular waveguide direction, higher connection rectangular waveguide section from the height direction to axial bending.Wherein axially be that short rectangular waveguide points to high rectangular waveguide direction or high rectangular waveguide points to short rectangular waveguide direction.
Like this, higher connection rectangular waveguide section forms warp architecture, compares like this under the unbending situation of connection rectangular waveguide section among the present invention, and volume is littler.
Further, in order to make the convenient processing of the present invention, can carry out large batch of production, the width of said short rectangular waveguide, high rectangular waveguide and connection rectangular waveguide section is all identical.
Operation principle of the present invention: electromagnetic wave signal gets into from short rectangular waveguide; Discontinuity place in connecting the rectangular waveguide section; Will produce reflected wave, when these reflected waves turn back to converter top, superimposed with certain phase place (depending on its progressive error) and amplitude each other; The result of numerous reflected wave mutual superposition that amplitude is big, phase place is different always has some ripples and cancels each other out or partial offset, thereby makes total reflected wave in the frequency band of broad, keep less value.
Compared with prior art; Beneficial effect of the present invention is: there is bigger discontinuity in the joint face of each rectangular waveguide; Make the present invention can in frequency band, satisfy designing requirement to certain reflection coefficient; And the length that connects the rectangular waveguide section should connect less than working frequency range highest frequency place waveguide segment main mould TE10 mould guide wavelength 1/6, its structure is little.
Description of drawings
Fig. 1 is a longitudinal sectional drawing of the present invention.
Fig. 2 is the complete symmetric case sketch map of Fig. 1.
Fig. 3 is the contrast table of joint number and difference in height.
Fig. 4 be Fig. 1 one of them than higher waveguide from the sketch map of short transverse to axial bending.
Label among the figure is expressed as respectively: 1, short rectangular waveguide; 2, high rectangular waveguide; 3, connect the rectangular waveguide section.
Embodiment
Below in conjunction with embodiment the present invention is done to specify further, but embodiment of the present invention is not limited thereto.
Like Fig. 1,2,3, shown in 4; Among Fig. 1 → be expressed as length direction; ↑ being expressed as short transverse, ⊕ is expressed as the Width that outside paper, points in the paper, because be impedance transformer; So the inevitable height of the height of short rectangular waveguide 1 in the present invention, otherwise also can realize less than high rectangular waveguide 2.A kind of rectangular-waveguide impedance transducer of the present invention's design; Comprise short rectangular waveguide 1; High rectangular waveguide 2; And at least 2 joint connect short rectangular waveguide 1 and high rectangular waveguide 2 be connected rectangular waveguide section 3, said connection rectangular waveguide section 3 interconnects in twos, the height of short rectangular waveguide 1 is less than the height of high rectangular waveguide 2.
Further, in order to realize capacitance structure, the height that is connected rectangular waveguide section 3 that links to each other with short rectangular waveguide 1 is greater than the height of short rectangular waveguide 1.The height that is connected rectangular waveguide section 3 that links to each other with high rectangular waveguide 2 is less than the height of high rectangular waveguide 2.Its height difference also can realize conversely.
To high rectangular waveguide 2 directions, the height height of all connection rectangular waveguide sections 3 is alternate from short rectangular waveguide 1, and adjacent two connect the difference A that there is height in rectangular waveguide section 3, A >=30%.Promptly connect in the rectangular waveguide sections 3 at adjacent two, high near the aspect ratio of the connection rectangular waveguide section 3 of short rectangular waveguide 1 near the height of the connection rectangular waveguide section 3 of high rectangular waveguide 2, promptly there is difference in height between them, its difference in height is A.In order to reduce the joint number that connects rectangular waveguide section 3; Reach the purpose of miniaturization impedance transformer design; Two wherein adjacent differences in height that connect rectangular waveguide section 3 must have individual higher value, form a sudden change, thereby the joint number of the connection rectangular waveguide section 3 that needs can reduce promptly.Draw through experimental study, difference in height A is 30% o'clock, is preferable states, and promptly the aspect ratio near the connection rectangular waveguide section 3 of short rectangular waveguide 1 is high by 30% near the height of the connection rectangular waveguide section 3 of high rectangular waveguide 2.Fig. 3 is the contrast table of joint number and difference in height, and the difference in height A among the present invention is 30% o'clock, jumping phenomenon occurs, and the joint number that promptly connects rectangular waveguide section 3 diminishes.At difference in height A is 10% between 30% the time, and the joint number of the connection rectangular waveguide section 3 of use is basically all more than tens joints, when difference in height A is 30%; Joint number becomes 4 joints; Simultaneously other parameters are unaffected, therefore with difference in height A >=30% o'clock, help the miniaturization Design of waveguide impedance transformer.
In order to reduce volume of the present invention, to high rectangular waveguide 2 directions, higher connection rectangular waveguide section is pointed to short rectangular waveguide 1 direction bending from the direction of height by high rectangular waveguide 2 from short rectangular waveguide 1.
Further, in order to make that the present invention can be compacter, in order to make the convenient processing of the present invention, can carry out large batch of production simultaneously.The length of said connection rectangular waveguide section 3 is B, and at the highest frequency place of working frequency range, this connects the guide wavelength C of the TE10 mould of rectangular waveguide section 3, B≤C/6.Said short rectangular waveguide 1, high rectangular waveguide 2 and to connect the width of rectangular waveguide section 3 all identical.
Just can realize the present invention preferably as stated.
Claims (6)
1. rectangular-waveguide impedance transducer; It is characterized in that: comprise short rectangular waveguide (1); High rectangular waveguide (2); And at least 2 joint connect short rectangular waveguide (1) and high rectangular waveguide (2) be connected rectangular waveguide section (3), said connection rectangular waveguide section (3) interconnects in twos, the height of short rectangular waveguide (1) is less than the height of high rectangular waveguide (2).
2. a kind of rectangular-waveguide impedance transducer according to claim 1 is characterized in that: the height that is connected rectangular waveguide section (3) that links to each other with short rectangular waveguide (1) is greater than the height of short rectangular waveguide (1).
3. a kind of rectangular-waveguide impedance transducer according to claim 2 is characterized in that: the height that is connected rectangular waveguide section (3) that links to each other with high rectangular waveguide (2) is less than the height of high rectangular waveguide (2).
4. a kind of rectangular-waveguide impedance transducer according to claim 3; It is characterized in that: from short rectangular waveguide (1) to high rectangular waveguide (2) direction; The height height of all connection rectangular waveguide sections (3) is alternate; Adjacent two connect the difference A that there is height in rectangular waveguide section (3), A >=30%.
5. a kind of rectangular-waveguide impedance transducer according to claim 4 is characterized in that: from short rectangular waveguide (1) to high rectangular waveguide (2) direction, higher connection rectangular waveguide section from the height direction to axial bending.
6. according to any described a kind of rectangular-waveguide impedance transducer among the claim 1-5, it is characterized in that: the width of said short rectangular waveguide (1), high rectangular waveguide (2) and connection rectangular waveguide section (3) is all identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201062XA CN102709659A (en) | 2012-06-19 | 2012-06-19 | Rectangular-waveguide impedance transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201062XA CN102709659A (en) | 2012-06-19 | 2012-06-19 | Rectangular-waveguide impedance transducer |
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| Publication Number | Publication Date |
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| CN102709659A true CN102709659A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210201062XA Pending CN102709659A (en) | 2012-06-19 | 2012-06-19 | Rectangular-waveguide impedance transducer |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB650615A (en) * | 1947-08-20 | 1951-02-28 | Emi Ltd | Improvements in or relating to electric waveguides |
| GB1387028A (en) * | 1972-04-25 | 1975-03-12 | Ferranti Ltd | Microwave devices |
| DE3208655A1 (en) * | 1982-03-10 | 1983-09-22 | Siemens AG, 1000 Berlin und 8000 München | Coupling device with a variable coupling factor for a superconducting cavity resonator |
| CN1378711A (en) * | 1999-08-10 | 2002-11-06 | 马科尼通讯股份有限公司 | Wave guide adapter |
| US20040246078A1 (en) * | 2001-11-26 | 2004-12-09 | Serge Vigneron | Waveguide quardruple mode microwave filter having zero transmission |
| WO2008020735A1 (en) * | 2006-08-17 | 2008-02-21 | Cij Corp. | Dielectric duplexer |
| CN101322283A (en) * | 2005-11-17 | 2008-12-10 | 爱立信股份有限公司 | T-shape waveguide twist-transformer |
| CN202616381U (en) * | 2012-06-19 | 2012-12-19 | 成都赛纳赛德科技有限公司 | Rectangular waveguide impedance transformer |
-
2012
- 2012-06-19 CN CN201210201062XA patent/CN102709659A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB650615A (en) * | 1947-08-20 | 1951-02-28 | Emi Ltd | Improvements in or relating to electric waveguides |
| GB1387028A (en) * | 1972-04-25 | 1975-03-12 | Ferranti Ltd | Microwave devices |
| DE3208655A1 (en) * | 1982-03-10 | 1983-09-22 | Siemens AG, 1000 Berlin und 8000 München | Coupling device with a variable coupling factor for a superconducting cavity resonator |
| CN1378711A (en) * | 1999-08-10 | 2002-11-06 | 马科尼通讯股份有限公司 | Wave guide adapter |
| US20040246078A1 (en) * | 2001-11-26 | 2004-12-09 | Serge Vigneron | Waveguide quardruple mode microwave filter having zero transmission |
| CN101322283A (en) * | 2005-11-17 | 2008-12-10 | 爱立信股份有限公司 | T-shape waveguide twist-transformer |
| WO2008020735A1 (en) * | 2006-08-17 | 2008-02-21 | Cij Corp. | Dielectric duplexer |
| CN202616381U (en) * | 2012-06-19 | 2012-12-19 | 成都赛纳赛德科技有限公司 | Rectangular waveguide impedance transformer |
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Application publication date: 20121003 |