Patent ID: 8085118
Filing Date: 2011-12-27
Classification: H01P

Abstract:
1. A microwave bandpass filter comprising: a cavity defined by a tubular structure and two opposing end walls, the tubular structure having a first end and a second end, one of the opposing end walls being attached to the first end and the other of the opposing end walls being attached to the second end; at least three resonators arranged in a row in the cavity, connected by apertures, wherein at least one resonator has a different spatial orientation from at least one other resonator; an input connector coupled to a first resonator of the at least three resonators; an output connector coupled to a second resonator of the at least three resonators; and at least one plate positioned between a pair of adjacent resonators for realizing sequential coupling between the pair of adjacent resonators and cross coupling between at least one pair of non-adjacent resonators.