A 70 GHz 10.2 mW self-demodulator for OOK modulation in 65-nm CMOS technology

Abstract

A 70.86 to 79.29 GHz low-power selfdemodulator for on-off-keying (OOK) modulation is realized in TSMC 65-nm CMOS technology. By using a frequencysweeping injection-locked oscillator (IJLO), the OOK modulated 70 GHz signal is demodulated by itself in a passive mixer and an 8.43 GHz bandwidth is achieved at 10.2 mW power consumption from a 1-V supply. The conversion gain is 10 dB and constant over the entire bandwidth. The core area of the chip is 0.072 mm 2 .Index Terms -Self-demodulator, injection-locked oscillator, frequency-sweeping tuning, on-off-keying, low power, passive mixer, CMOS.