Electronically tuned voltage controlled evanescent mode waveguid

Details Electronically tuned voltage controlled evanescent mode waveguid Electronically tuned voltage controlled evanescent mode waveguid

1997-09-19

1999-09-28

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333210, H01P 1202

Patent

active

059595124

ABSTRACT:
Tunable varactor diodes are utilized to adjust the filter frequency of a waveguide filter operating in evanescent mode. Because evanescent mode signals in a waveguide attenuate as they propagate, and because shunt capacitance between a waveguide and the surroundings can change the frequency at which the signals attenuate, controlling the shunt capacitance can filter the signals passing along the waveguide.

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