Frequency Triplers and Quadruplers with GaAs Schottky-Barrier Diodes at 450 and 600 GHz

Submillimeter-wave solid-state sources have been developed with a frequency tripler and a frequency quadrupler driven by an 150-GHz band IMPATT oscillator. The tripler and quadrupler delivered an output power of -9.3 dBm at 447 GHz with a conversion loss of 20 dB, and -28 dBm at 589 GHz with a conversion loss of 39 dB, respectively. The frequency multiplication was performed by use of GaAs-Ni-Au schottky-barrier diodes with junction diameter of 1-3 mu m and hybrid integrated circuit techniques.