An up-conversion mixer includes a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler receives an input intermediate frequency (IF) signal and produces a first IF signal (IF1) and a second IF (IF2) signal, the second IF signal being...http://www.google.fr/patents/US7512394?utm_source=gb-gplus-shareBrevet US7512394 - Wideband up-conversion mixer
