A sixport receiver's analog front-end for the K-band based on a rapid-prototyped PCB

Within the scope of the research project presented in this paper an alternative architecture to mixing based receivers like hetero- or homodyne receivers is investigated: the sixport receiver. The theoretical aspects of the system concept are shown and the structure of the analog front-end is presented supported by measurement results. The analog front-end is based on a microwave circuit with a carrier frequency of 24 GHz and constructed as a PCB milled by a circuit board plotter