Compact rectangular-waveguide impedance transducer
A technology of impedance converter and rectangular waveguide, which is applied in the direction of waveguide devices, waveguides, electrical components, etc., can solve the problems of size increase, cost increase, frequency band widening, etc., and achieve the effect of compact structure
Inactive Publication Date: 2012-10-10
成都赛纳赛德科技有限公司
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Problems solved by technology
The main disadvantage of this converter is the increase in size and cost while widening the frequency band
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Embodiment 1
[0014] Such as figure 1 As shown, figure 1 Among them, → means the length direction, ↑ means the height direction, ⊕ means the width direction, and the width direction is outside the paper surface and points inside the paper surface.
[0015] A compact rectangular waveguide impedance converter, comprising an input rectangular waveguide 1, an output rectangular waveguide 2, and at least two connecting rectangular waveguide sections 3 connecting the input rectangular waveguide 1 and the output rectangular waveguide 2, and the connecting rectangular waveguides 3 are in pairs The length of the connected rectangular waveguide section 3 is B. At the highest frequency of the working frequency band, the waveguide wavelength of the TE10 mode of the connected rectangular waveguide section 3 is C, B≤C / 6, and all the connected rectangular waveguide sections 3 The height is the same. In order to reduce the number of nodes connected to the rectangular waveguide section 3, thereby reducing the ...
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The invention discloses a compact rectangular-waveguide impedance transducer which comprises an input rectangular waveguide, an output rectangular waveguide and at least two connection rectangular waveguide sections connecting the input rectangular waveguide and the output rectangular waveguide, wherein the connection rectangular waveguides are mutually connected in pairs; the length of each connection rectangular waveguide section is B; at the highest frequency of the working frequency range, the waveguide wavelength of the TE10 mode of the connection rectangular waveguide section is C, and B<=C / 6; and all connection rectangular waveguides have the same height. Through the invention, the connection surface of each rectangular waveguide has relatively high discontinuity, thus the compact rectangular-waveguide impedance transducer disclosed by the invention can meet the design requirement of a certain reflection coefficient in the frequency band; and the length of each connection rectangular waveguide section is 1 / 6 less than the waveguide wavelength of the dominant TE10 mode of the connection waveguide section at the highest frequency of the working frequency range, thus the structure is compact.
Description
Technical field [0001] The present invention relates to a compact rectangular waveguide impedance converter, in particular to a compact rectangular waveguide impedance converter composed of rectangular waveguides with different heights. Background technique [0002] Between two rectangular waveguides with different characteristic impedances, a quarter-wavelength impedance converter is added to achieve impedance matching. In order to broaden the working frequency band, a common practice at home and abroad is to add multi-section impedance converters. In theory, the more stages of a multi-section converter, the wider the matching frequency band, because n-section converters have n conversion sections, ( n+1) connection planes, correspondingly there are (n+1) reflection waves. When these reflection waves return to the beginning of the converter, they are superimposed with each other in a certain phase (depending on their travel difference) and amplitude, and the amplitude is very sm...
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Inventor 王清源谭宜成吴涛
Owner 成都赛纳赛德科技有限公司