Patent ID: 6104261
Filing Date: 2000-08-15
Classification: H01P

Abstract:
A dielectric filter including electrodes formed on both principal surfaces of a dielectric plate, a plurality of non-electrode parts having substantially the same shape being formed in the respective electrodes such that said non-electrode parts on one principal surface of the dielectric plate are located at positions corresponding to the positions of the respective non-electrode parts on the other principal surface on the opposite side, the respective regions between said non-electrode parts serving as resonance regions, said non-electrode parts being surrounded by a rectangular cavity with a width having a dimension a which satisfies the condition a<c/(2f0) where f0 is the resonant frequency of said resonance regions and c is the velocity of light, said dielectric filter further including a signal input and a signal output which are each coupled with an electromagnetic field in the vicinity of any of said plurality of resonance regions.