A V-band High performance single-stage MMIC frequency quadrupler

Design and development of a 14.25 GHz to 57 GHz frequency quadrupler has been presented in this paper using GaAs/InGaAs/AlGaAs based pseudomorphic High Electron Mobility Transistor (pHEMT) in a single-stage, Monolithic Microwave Integrated Circuit (MMIC). Fabricated MMIC chip has achieved 5.2 dB of conversion loss at 57 GHz for 0 dBm of input power at 14.25 GHz. Saturated output power is -4.5 dBm without any output amplifier stage. Fractional bandwidth has been obtained as 7%, while output power variation is within 5 dB. DC power consumption of the circuit is only 60 mW. Fundamental and other unwanted harmonic rejection is in excess of 25 dBc. Highly stable and high quality output spectrum of the frequency quadrupler makes it suitable for Millimeter Wave (MMW) transceiver application.