Inclined multi-path synthetic gyrotron traveling wave tube TE02 mode input coupler

An input coupling and oblique-entry technology, which is applied in the field of oblique-entry multi-channel synthetic convoluted traveling wave tube TE02 mode input coupler, can solve the problems of mode input coupler, such as difficult suppression of mixed modes, narrow relative bandwidth, and low conversion efficiency. , to achieve the effects of easy processing, relatively wide bandwidth, and reduced reflection

Inactive Publication Date: 2020-11-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the gyrotron traveling wave tube TE 02 Mode input coupler has difficulty in suppressing mixed modes, low conversion efficiency, and relatively narrow bandwidth

Method used

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  • Inclined multi-path synthetic gyrotron traveling wave tube TE02 mode input coupler
  • Inclined multi-path synthetic gyrotron traveling wave tube TE02 mode input coupler
  • Inclined multi-path synthetic gyrotron traveling wave tube TE02 mode input coupler

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Embodiment Construction

[0030] Below in conjunction with a design example and accompanying drawing, the present invention is described in further detail:

[0031] The working band of this embodiment: 205-230GHz.

[0032] figure 1 TE 02 Schematic diagram of the mode input coupler; figure 2 TE 02 Mode input coupler - partial structure diagram; image 3 TE 02 Side view of the mode input coupler. This embodiment includes: power distribution part: standard rectangular waveguide A (1), stepped matching section A (2), matching groove (3), T-shaped power divider A (4), transitional waveguide A (5), T-shaped power splitter B (6), transitional waveguide B (7), stepped matching section B (8), Y-shaped power splitter (9). Inclined entry multiplexing part: transitional waveguide C (10), oblique entry rectangular waveguide (11), main circular waveguide (12); cut-off waveguide part: cut-off circular waveguide (13).

[0033] 1. Power distribution part

[0034] Standard rectangular waveguide A (1) is a stan...

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Abstract

The invention discloses an inclined multi-path synthetic gyrotron traveling wave tube TE02 mode input coupler, and belongs to the technical field of microwave and millimeter wave devices. The input coupler comprises a power distribution part, an inclined multi-path synthesis part and a cut-off circular waveguide. According to the invention, a high-purity TE02 mode is coupled in a main circular waveguide by adopting an inclined multi-path synthesis structure, and by changing the number and position distribution of the branches of rectangular waveguides on the side wall of the main circular waveguide and the included angle between the branches of the rectangular waveguide on the side wall and the circular waveguide, the field distribution of the main competitive modes (TE01 and TE41) of a TE02 mode in the main circular waveguide is destroyed to improve impedance matching, so that the beneficial effects of effectively suppressing a parasitic mode, reducing a reflection coefficient, improving conversion efficiency and increasing bandwidth are achieved.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave devices, and in particular relates to an oblique-entry multi-channel synthesis convoluted traveling wave tube TE 02 mode input coupler. Background technique [0002] The cyclotron traveling wave tube is a high-power, wide-band microwave and millimeter-wave amplifier with high power and wide-band characteristics. It has broad application prospects in millimeter-wave imaging radar, millimeter-wave communication systems, and electronic warfare. The input coupler is one of the core components of the gyrotraveling wave tube, and its main function is to connect the TE of the standard rectangular waveguide 10 The modes are coupled out of the gyro TWT working mode TE in the circular waveguide through specific mode conversion mn mold. It is the core high-frequency device that completes the mode conversion of the input signal and modulates the energy or speed of the cyclotron beam. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/12
CPCH01P5/12
Inventor 徐勇毛娅郑智斌刘智航罗勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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