A novel technique for obtaining LO and RF (LSB) Rejection in 25-40 GHz microwave up conversion mixers based on the concepts of distributed and double balanced mixing

Abstract

In this paper a new configuration of up converter is presented. In this circuit, the LO and RF (LSB)frequencies are rejected thanks to a distributed and balanced circuit. Eight GaAs PHEMTs with a gate-length of 0.25 µm are used. A conversion gain of - 6 dB and a rejection over 6 dB on LO and RF (LSB) are obtained