A 40-74 GHz amplitude/phase control MMIC using 90-nm CMOS technology

The design and measurement results of a continuous amplitude/phase control CMOS MMIC are presented in this paper. This circuit uses the vector sum method to achieve continuous phase and amplitude control. The phase shifter demonstrates all continuous phase control and an insertion loss of 17 dB with 30-dB dynamic range from 40 to 75 GHz. The chip size is only 0.7 mm times 0.6 nm. To the best of the authors´ knowledge, this circuit is the first demonstration of millimeter-wave phase shifters MMIC using the vector sum method, with the smallest chip size for all MMIC phase shifters and 360deg phase-control circuits in frequencies above 5 GHz reported to date.