An X-Band Low Phase Noise AlGaN-GaN-HEMT MMIC Push-Push Oscillator

An X-band low phase noise AlGaN-GaN HEMT MMIC push-push oscillator is designed, fabricated, and characterized. The oscillator is based on two common gate Colpitts oscillators. A minimum phase noise of -101 dBc at 100 kHz offset is achieved. The MMIC was fabricated in an 'in-house process' at Chalmers University of Technology.