A 283 GHz low power heterodyne receiver with on-chip local oscillator in 65 nm CMOS process

A Fully integrated 283 GHz heterodyne receiver in 65 nm CMOS process is presented in this paper. The circuit includes a resistive differential mixer, an intermediate frequency amplifier and a 282 GHz subharmonic injection locked oscillator. The on-chip oscillator generates a 94 GHz fundamental tone but exploits a 282 GHz third harmonic. An injection signal of 47 GHz (one sixth of the RF frequency) is used to lock the oscillator on a reference. The receiver measured conversion gain is -6 dB for a DC power consumption of 97.6 mW. Simulated noise figure is 38 dB. The chip size is 820 μm × 780 μm including matching networks and DC/RF pads.