A 12.1 mW 50-67-GHz CMOS UP-CONVERSION MIXER WITH 6-dB CONVERSION GAIN AND 30.7-dB LO-RF ISOLATION

作者：Lin Yo Sheng^*; Wen Wei Chen; Tsai Tzung Min

来源：Microwave and Optical Technology Letters, 2014, 56(2): 475-483.

DOI：10.1002/mop.28124

• CMOS
• 60 GHz
• up-conversion mixer
• current injection
• negative resistance compensation
• Marchand balun

A 50-67-GHz double-balanced mixer for direct up-conversion using standard 90-nm CMOS technology is reported. The up-conversion mixer comprises an enhanced double-balanced Gilbert cell with current injection for power consumption reduction, and negative resistance compensation for conversion gain (CG) enhancement, a parallel and differential intermediate frequency (IF) transconductance stage for bandwidth and linearity enhancement, a Marchand balun for converting the single local oscillator (LO) input signal to differential signal, and another Marchand balun for converting the differential radio-frequency (RF) output signal to single signal. The mixer consumes 12.1 mW and achieves IF-port input return loss of -12.8 dB at 0.1 GHz, LO-port input return loss of -9.5 to -11.4 dB and RF-port input return loss of -10.7 to -12.5 dB for frequencies 57-64 GHz. At IF of 0.1 GHz, the mixer achieves CG of 3.1-6 dB and LO-RF isolation of 26.4-30.7 dB for RF of 50-67 GHz. The corresponding 3-dB bandwidth of RF is larger than 17 GHz (the measurement range of 50-67 GHz). To the authors' knowledge, the CG and power consumption are the best results ever reported for a 60-GHz CMOS/BiCMOS up-conversion mixer. In addition, the measured IIP3 is -6.4 dBm at RF of 60 GHz.

• 出版日期2014-2