A 50-70 GHz I/Q modulator with improved sideband suppression using HPF/LPF based quadrature power splitter

國立臺灣師範大學應用電子科技學系Yi-Chien TsaiJing-Lin KuoJeng-Han TsaiKun-You LinHuei Wang2014-10-302014-10-302011-06-10http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/32263This paper presents a 50-70 GHz wideband I/Q modulator with improved sideband suppression. The sideband suppression improvement results from the on-chip HPF/LPF based broadband quadrature power splitter. The I/Q modulator exhibits conversion gain of -6 to -2 dB from 50-70 GHz. The LO-RF isolation is better than 36 dB. The sideband suppression is better than 19 dBc from 50 to 75 GHz.I1Q modulatorHPF/LPFquadrature power splitter (QPS).A 50-70 GHz I/Q modulator with improved sideband suppression using HPF/LPF based quadrature power splitter