A novel balun based on an asymmetric copianar waveguide with finite ground plane (ASYCPWFGP) to copianar strip (CPS) transition is presented. A return loss better than 16dB is obtained up to 50GHz. The baluns are combined with four silicon Schottky barrier crossover diodes to yield a planar double-balanced mixer (DBM) which demonstrates an ultra-broadband performance up to 40 GHz.
- Copianar waveguides
- Mixers (circuits)