Polarization separating filter for hyper frequency structures

Claim 1

A polarization diplexer for high frequency equipment comprising a five-armed double branching (DV) symmetrical structure which branches a circular waveguide which extends in the axial direction into two pairs of rectangular waveguides respectively arranged opposite to one another, characterized in that the first pair consisting of two rectangular waveguide arms (1, 3) of said double branching structure (DV) lying opposite to one another is fed by a hybrid junction (gG) which is symmetrical and which comprises straight sub-arms; and that the second pair consisting of two rectangular waveguide arms (2, 4) of said double branching strucuture (DV) lying opposite to one another is fed by a second hybrid junction (aG) which is electrically symmetrical and comprises sub-arms straddled over its broad sides and all bends are constructed so as to be E-bends, characterized in that the two hybrid junctions (gG,aG) are each constructed with a symmetrical series branching structure (SV), wherein two respective E-plane bends are connected to the respective series branching structure (SV), said E-plane bends being designed and located such that the sub-arms of the hybrid junction structures (gG,aG) extend parallel to one another and the spacing (w) between the inwardly disposed broad walls of said sub-arms of said straight hybrid junction structure (gG) is somewhat greater by approximately 10% than the broad side dimension (a T ) of the sub-arms, and wherein two E-plane offset sections are formed with longitudinal axes exteding parallel to each other and are connected to the sub-arms of said series branching structure (SV) of said second hybrid junction (aG), said E-plane offset sections being each composed of two E-plane bends which have mutually opposite bend directions and are connected to each other with a homogenous line of a length such that an offset path (v) measured perpendicular to the longitudinal axis (5) of said double branching structure (DV) results and thepenetration-free arrangement of both hybrid junction structure (gG,aG) results.