A Ka-band MMIC Oscillator Using a Miniaturized CPW 1-D PBG Structure

A Ka-band monolithic microwave integrated circuit (MMIC) oscillator was implemented by using a coplanar waveguide photonic bandgap (PBG) resonator and a 0.1mum GaAs pseudomorphic high electron mobility transistor (p-HEMT). A coplanar labyrinthine one-dimensional PBG resonator was used for reduction in MMIC size. The fabricated MMIC oscillator had an output power of 6.5 dBm at 30.3 GHz and a free-running phase noise of -80dBc/Hz at 100 kHz offset