Circular window for ultra-high frequency waveguide

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

H - Electricity

01

P

333/20, 333/23

H01P 1/08 (2006.01) H01J 23/36 (2006.01)

Patent

CA 1236179

ABSTRACT OF THE DISCLOSURE CIRCULAR WINDOW FOR ULTRA-HIGH FREQUENCY WAVEGUIDE 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 centred around the central frequency. The diameter of the circular plate is chosen so as to reject the ghost modes out- side 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 asso- ciated with rectangular waveguides is more particularly used with tubes for telecommunica- tions.

472058

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