Patent ID: 6384796
Filing Date: 2002-05-07
Classification: H01P,H01Q

Abstract:
An antenna for radiating and receiving electromagnetic waves and comprising a parabolic reflector, an exciter designed as a sub-reflector and attached at the focal point of the reflector at an end of a waveguide which is guided through a center of said reflector, and a radio box attached to said waveguide on a backside of the reflector, said antenna further comprising a polarization diplexer between the radio box and the waveguide for simultaneous transmission of two orthogonal, linearly polarized waves, said diplexer having first and second inputs with a substantially rectangular cross section, and an output which can be attached to the waveguide, said polarization diplexer including two waveguide segments, one of which is a linear waveguide segment running linearly between the first input and the output of the polarization diplexer, the other of which is a curved waveguide segment starting as a 90Â° curve at the second input of the polarization diplexer and feeding into the linear waveguide segment, and the linear waveguide segment being rotated by 90Â° in the input area so that the large axes of the two inputs of the polarization diplexer that lie in the same plane are at right angles to each other.