A D-band Balanced Frequency Doubler with Marchand Balun Structure

A D-band broadband frequency doubler based on a 65-nm CMOS technology is proposed in this paper. This doubler with an output frequency of 110~170GHz is implemented by a single-balanced topology based on Marchand balun. When the input power is 10dBm, the conversion gain of the frequency doubler is -13dB to -10dB, the fundamental suppression is greater than 19dB, and the 3-dB bandwidth is 50%. The chip size including all pads is 0.45*0.58 mm
²
.