High-power millimeter-wave TE02 mode filter

A millimeter-wave, high-power technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of complex filter structure and poor filtering performance, and achieve good electromagnetic shielding effect, large power capacity, and wide application range Effect

Active Publication Date: 2019-08-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0004] Aiming at the problems of complex structure and poor filtering performance of existing mode filters, the p

Method used

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  • High-power millimeter-wave TE02 mode filter
  • High-power millimeter-wave TE02 mode filter
  • High-power millimeter-wave TE02 mode filter

Examples

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Embodiment Construction

[0026] In the following, an example will be combined with the above-mentioned theoretical basis and design points for illustration.

[0027] as attached figure 1 As shown, the TE of this example 02 The mode filter works in the Ka frequency band, and includes three parts: a mode filtering section 2, an input transition section 1 and an output transition section 3 symmetrically arranged at both ends thereof.

[0028]The filter input and output interface is a circular waveguide with a diameter of 32mm. The input-output transition section and the mode filtering section are connected by a linear transition, and the length of the transition section is 180mm. The entire filter length is 500 mm. The mode filtering section includes the main waveguide and four wave-absorbing cavities uniformly arranged around it. Wherein, the inner cross-section of the main waveguide is a circular waveguide, and the main waveguide and the wave-absorbing cavity are respectively communicated through f...

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Abstract

The invention discloses a high-power millimeter-wave TE02 mode filter, and belongs to the technical field of high-power millimeter-wave transmission. The filter comprises a mode filtering section, andan input transition section and an output transition section which are symmetrically arranged at two ends of the mode filtering section; the input/output transition section enables a circular waveguide to be connected with the mode filtering section to realize the switching between a TE0n mode in the circular waveguide and a quasi-TE0n mode in a quasi-circular waveguide. The mode filtering section comprises a main waveguide and four wave absorbing cavities which are uniformly arranged at the periphery of the main waveguide; and the main waveguide is communicated with the wave absorbing cavities through four strip-shaped radiation holes arranged along the axial direction. The filter provided by the invention adopts an over-mode-based waveguide structure, is high in power capacity, can filter the TE02 mode in a broadband range, also has a certain filtering effect on the TE11 mode, the TM11 mode and the TE21 mode, and does not influence the transmission of the TE01 mode. Meanwhile, the filter is simple in structure, easy to process and simple and convenient to assemble.

Description

technical field [0001] The invention belongs to the technical field of high-power millimeter wave transmission, and in particular relates to a high-power millimeter wave transmission link TE 02 Modular filter. Background technique [0002] The cyclotron traveling wave tube has the characteristics of high gain, wide frequency band and high power. It is the only broadband power source that can achieve high power output in the millimeter wave band. It has very broad applications in the fields of imaging radar, millimeter wave communication systems, electronic countermeasures, and microwave weapons. application prospects. Circular waveguide TE 01 The mode is distributed in a ring shape, and has the characteristics of energy concentrated in the center of the waveguide and weak fringe field, which is a common working mode of the cyclotron TWT. In order to avoid power breakdown and reduce transmission loss, the high-power transmission line that realizes the connection between th...

Claims

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Application Information

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IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 吴泽威王敏行蒲友雷刘国蒋伟罗勇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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