Circular window for ultra-high frequency waveguide

Details Circular window for ultra-high frequency waveguide Circular window for ultra-high frequency waveguide

1985-01-09

1987-08-04

Gensler, Paul

Wave transmission lines and networks

Long line elements and components

Waveguide elements and components

333 33, H01P 108

Patent

active

046849084

ABSTRACT:
The present invention relates to a circular window for an ultra-high frequency waveguide. This window is constituted by a circular plate or wafer made from a dielectric material mounted in a waveguide section, connected on either side of a waveguide operating in a frequency band centered around the central frequency. The diameter of the circular plate is chosen so as to reject the ghost modes outside the frequency band. The length of the circular guide section is chosen so that the reactance of the assembly constituted by the plate and the circular guide is cancelled out for the central frequency. It also comprises a half-wave impedance transformer, whose height is chosen so as to bring about the matching in the operating frequency band. The window associated with rectangular waveguides is more particularly used with tubes for telecommunications.

REFERENCES:
patent: 3183459 (1965-05-01), Caputo et al.
patent: 3436694 (1969-04-01), Walker
patent: 3775709 (1973-11-01), Firmain et al.
patent: 3860891 (1975-01-01), Hiramatsu
patent: 4358744 (1982-11-01), Tikes

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