A W-band Frequency Tripler with 8-dBm Output Power Using 0.25-μm GaAs pHEMT Process

This paper presents a W-band power combining harmonic frequency tripler. The MMIC integrates two multiplier chains consisting of a Ka-band amplifier followed by a W-band tripler, power divider and combiner. The simulation results demonstrate that the tripler exhibits a maximum output power of 8 dBm with a -3 dB bandwidth of 9 GHz. Fundamental and 2nd-harmonic suppressions are better than 20 dB and 18 dB respectively within the operating band, and the power consumption is 440 mW. The tripler is designed using a 0.25 μm GaAs pHEMT technology, and the chip size is 1.7 mm×1.3 mm
²
.