A 130-GHz OOK transmitter in 65-nm CMOS technology

A 130-GHz OOK transmitter has been developed based on a 65-nm CMOS technology in this work. The transmitter is composed of a 130-GHz fundamental oscillator and a switch-based OOK modulator. The oscillator is based on an LC cross-coupled differential pair with a tapered buffer, while the switch adopts a 3-stage shunt configuration. The on/off power ratio of the switch is over 20 dB, and the transmitter exhibits an output power of -5.1 dBm with the switch turned on. The 3-dB bandwidth of the transmitter measured with a frequency domain technique is 16 GHz. The transmitter consumes 55.2 mW, mostly arising from the oscillator.