A 48 GHz monolithically integrated frequency tripler with InP HEMTs

We present a single-device 16 - 48 GHz frequency tripler realized with a 0.2 /spl mu/m InP HEMT process using coplanar waveguide technology. The fabricated circuit presents a maximum third harmonic conversion gain of -10.5 dBm, a maximum output power of -9 dBm, a first harmonic suppression of more than 25 dB, and a peak third harmonic conversion efficiency of 5.5%. This characteristics make it a suitable candidate for the generation of a stable high-frequency local oscillator.