Characterization of a Highly Efficient Waveguide Front-End Direct-Conversion Receiver for 60-GHz Wireless Systems

The paper presents the characterization of a wideband front-end receiver, based on hollow waveguide technology and multiport concept, for 60 GHz wireless communications applications. The presented waveguide multiport network is composed of four 90° hybrid couplers and a
$90^{\mathrm{o}}$
phase shifter and fabricated on brass material to minimize the insertion losses and noise levels at the first stages. To determine the performance of the receiver, an experimental analysis of real-time wireless data transmission employing modulated phase-shift keying (PSK) signals are provided by a standard test bench setup.