Attenuation and time delay equalizer for a waveguide filter

Details Attenuation and time delay equalizer for a waveguide filter Attenuation and time delay equalizer for a waveguide filter

H - Electricity

01

P

333/26, 333/68

H01P 1/209 (2006.01)

Patent

CA 1258892

ABSTRACT OF THE DISCLOSURE An arrangement for the equalization of attenuation and time delay in microwave filter utilizing waveguide technology. An equalizer composed of a multi-circuit cavity resonator is coupled via a first coupling aperture to a waveguide which is connected to the filter. The resonator includes at least two individual waveguide sections coupled to each other via a second coupling aperture. The coupling apertures are dimensioned so that the resonator is critically coupled with respect to time de- lay characteristics. The resonator includes a power-absorbing tuning device for tuning all of the waveguide sections to substan- tially the same quality factor. The second coupling aperture presents a stepped cross section defining a first area and a second area having a larger cross section than the first area. The resonator further includes at least two screws arranged symmet- rically with respect to the longitudinal axis of the resonator and protruding laterally into the second area of the second coupling aperture. The screws influence the time delay of the equalizer as a function of their depth of penetration into the second area.

519947

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