Monolithic millimeter-wave diode grid frequency multiplier arrays

Monolithic diode frequency multiplier arrays, including barrier-N-N (BNN) doubler, multi-quantum-barrier-varactor (MQBV) tripler, Schottky-quantum-barrier-varactor (SQBV) tripler, and resonant-tunneling-diode (RTD) tripler arrays, have been successfully fabricated with yields between 85% and 99%. Frequency doubling and/or tripling have been observed for all the arrays. Output powers of 2.4-2.6 W (r=1018%) at 66 GHz with the BNN doubler and 3.8-10 W (ri.1.7-4%) at 99 GIlz with the SQBV tripler have been achieved.