A low phase noise W-band MMIC GaN HEMT oscillator

Abstract

This paper presents a fundamental mode W-band MMIC balanced Colpitts oscillator implemented in an advanced 60 nm gallium nitride (GaN) high electron mobility transistor (HEMT) process from OMMIC foundry. The oscillator operates around 85 GHz with measured peak output power of nearly 0 dBm and phase noise at 10 MHz offset of -120 dBc/Hz. To the best authors' knowledge, the phase noise is state-of-the-art value for W-band monolithic microwave integrated circuit (MMIC) GaN HEMT oscillators.