Patent ID: 6340922
Filing Date: 2002-01-22
Classification: H01P

Abstract:
A waveguide filter inserted as a planar first conducting structure in a cross-sectional plane of an elongated waveguide, perpendicular to the waveguide axis, between a feeding and an extending segment of the waveguide, with the first conducting structure having a centrally arranged aperture formed for natural resonance for a selected transmission frequency f (ind 0), and, in addition to the centrally arranged aperture (3), two identically configured, parallel, spaced-apart apertures (4), and wherein the identically configured apertures (4) are formed for natural resonance for an interference frequency f (ind S1) to be blocked by the waveguide filter, and the apertures (3,4) are arranged in the conducting structure (2) such that, relative to a longitudinal expansion of the respective apertures, the apertures are positioned respectively in the center of a symmetry axis for the conducting structure (2), which axis runs parallel to field strength vectors (5) for the waveguide.