A 70-MHz continuous-time CMOS band-pass ΣΔ modulator for GSM receivers. - Issac Hsu; Howard C. Luong (ISCAS, 2000)

A fully integrated 900-MHz CMOS wireless receiver with on-chip RF and IF filters and 79-dB image rejection. - Chun Bing Guo; Chi-Wa Lo; Yu-Wing Choi; Issac Hsu; Toby Kwok-Kei Kan; David Leung; Alan N. L. Chan; Howard C. Luong (IEEE J. Solid State Circuits, 2002)