Patent ID: 6980065
Filing Date: 2005-12-27
Classification: H01Q

Abstract:
1. A low noise block (LNB) having an antenna feed, a waveguide coupled to the antenna feed, the waveguide having a rear wall, a housing coupled to the waveguide and arranged substantially perpendicular to the waveguide, the waveguide rear wall comprising a part of the housing, the waveguide rear wall having at least one aperture therein for receiving a non-linear probe when coupled to a printed circuit board, the at least one aperture being dimensioned to allow the non-linear probe coupled to a printed circuit board to pass through the waveguide rear wall and into the waveguide such that the non-linear probe is oriented in the waveguide for reception of electromagnetic radiation passing therealong, said at least one aperture having dimensions being proportioned to minimise the leakage of microwave radiation passing through the aperture other than by the non-linear probe, the printed circuit board being insertable and removable with respect to the LNB housing without decoupling the printed circuit board from the non-linear probe.