Patent ID: 7873329

Claim:
A transceiver for receiving and/or transmitting signals, said transceiver comprising: a block having a received signal cavity providing a waveguide for a received signal in use, and a locally generated signal cavity providing a waveguide for a locally generated signal in use, said cavities sharing a common plane in the block; a mixer/filter assembly having a mixer, at least one filter and at least two mode converter portions, the mixer/filter assembly being mounted within the block, where a first mode converter portion of said mixer/filter assembly extends into the received signal cavity and a second mode converter portion of the mixer/filter assembly extends into the locally generated signal cavity, the mode converter portions of the mixer/filter assembly providing mode conversion of a received signal and the locally generated signal to a TEM mode, for propagation to the mixer, in use; and a filter electrically connected to the mixer/filter assembly to provide an output signal in use of the transceiver to receive signals where said filter is disposed in a further cavity of the block where said further cavity is substantially perpendicular to the common plane.