Symmetrical dual-arm rectangular-circular waveguide mode converter
A mode converter and circular waveguide technology, which is applied to waveguide-type devices, circuits, electrical components, etc., can solve the problems of complex structure, narrow bandwidth and low efficiency of mode converters.
Active Publication Date: 2021-07-30
10TH RES INST OF CETC
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Problems solved by technology
[0004] In order to overcome the current microwave / millimeter wave rectangular waveguide TE 10 Mode and Circular WaveguideTM 01 For the problems of complex structure, low efficiency, and narrow bandwidth of the mode converter, the present invention provides a wide-band, high-efficiency rectangular waveguide-circular waveguide mode conversion with a compact structure, small reflection coefficient, and high mode conversion efficiency, symmetrical double-arm structure device to achieve the purpose of improving the transition efficiency of microwave / millimeter wave signals between different transmission lines
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[0017] refer to figure 1 , figure 2 . In the embodiment described below, a symmetrical double-arm rectangular waveguide mode converter includes: at least three layers of stacked rectangular conductors, a rectangular waveguide 1 inserted from the top of the layer A conductor, and a B with a circular coupling cavity 4 layer conductor, a circular waveguide 6 inserted from the bottom of layer C, and several fastening screws arranged around the waveguide cavity, wherein: the rectangular waveguide 1 inserted into the waveguide cavity of layer A turns into a wide waveguide 7 after turning 90° through the bottom step 2, The waveguide is stretched symmetrically with the center of the broadside of the waveguide facing both sides, and after two consecutive broadside steps 8 are bent 180°, a folded symmetrical double arm 3 is formed; the rectangular waveguide 1 after the bottom end is bent is coupled with a circular The cavity 4 is connected through the symmetrical double arm 3, and af...
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The invention discloses a symmetrical double-arm rectangular-circular waveguide mode converter, aiming to provide a rectangular / circular waveguide mode converter with compact structure, small reflection coefficient and high mode conversion efficiency. The present invention is realized through the following scheme: the rectangular waveguide inserted into the A-layer waveguide cavity turns into a wide waveguide after turning 90° through the bottom step, and the waveguide is stretched symmetrically to both sides with the center of the broadside of the waveguide, and passes through two consecutive broadside steps Folded symmetrical arms are formed after 180° bending; the rectangular waveguide after bending at the bottom is connected to the symmetrical arms with a circular coupling cavity, and then converted and connected to both sides of the symmetrical arms after passing through the disk in the center of the circular coupling cavity Circular waveguide in center; TE in rectangular waveguide 10 The mode signal is divided into two equal-amplitude and in-phase TE channels by means of a diaphragm on a symmetrical plane. 10 After the mode signal enters the symmetrical double arm, the TE 10 Mode signals are coupled to form a circular waveguideTM with rotating characteristics 01 The mode signal then enters the circular waveguide.
Description
technical field [0001] The present invention relates to the field of microwave / millimeter wave technology, in particular to a TE that includes a rectangular waveguide 10 Mode and Circular WaveguideTM 01 Mode converters, especially the symmetrical dual-arm rectangular waveguide mode converters that are mainly used for signal transitions between rectangular waveguides and circular waveguides. Background technique [0002] In the guided mode of a rectangular waveguide, the TE with the lowest cutoff frequency 10 The mode is called the principal mode, and the other modes are called higher-order modes. For a rectangular waveguide with a cross-sectional size of a×b, when the operating frequency is lower than the cut-off frequency, the electromagnetic wave attenuates rapidly, and the waveguide exhibits the characteristics of a high-pass filter; only when the operating frequency is higher than the cut-off frequency, the electromagnetic wave can be guided and transmitted. The recta...
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IPC IPC(8): H01P1/16H01P1/163
CPCH01P1/16H01P1/163
Inventor 党章朱海帆黄建刘祚麟
Owner 10TH RES INST OF CETC