A novel transformer-based mm-Wave frequency doubler with enhanced output symmetry

作者:Zhou Chunyuan; Zhang Lei*; Qian He
来源:Analog Integrated Circuits and Signal Processing, 2014, 79(3): 455-460.
DOI:10.1007/s10470-014-0286-0

摘要

A novel transformer-based differential frequency doubler operating in mm-Wave range is presented in this paper. The differential output signal is generated by the second harmonic of the nonlinear push-push pairs. In order to enhance the symmetry of the high frequency differential output, a stacked transformer implemented by the top two metal layers in 90-nm CMOS process is used as the loads in the proposed frequency doubler. Simulation results show that the proposed circuit has achieved less than phase mismatch and 0.6-dB amplitude mismatch operating at 60-GHz.

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