1. CMOS mixers and polyphase filters for large image rejection
2. [3] M.J. Gingell, “A symmetric polyphase network,” British Patents 1174709 and 1174710, Dec. 1969.
3. [4] M.J. Gingell, The synthesis and application of polyphase filters with sequence asymmetric properties, Ph.D. Thesis, University of London, 1975.
4. [5] J. Crols and M. Steyaert, “An analog integrated polyphase filter for a high performance low-IF receiver,” Symp. VLSI Circuits Dig., pp.87-88, June 1995
5. [6] S.H. Galal, M.S. Tawfik, and H.F. Ragaie, “On the design and sensitivity of RC sequence asymmetric polyphase networks in RF integrated transceivers,” Proc. 1999 IEEE Int. Symp. on Circuits and Systems, pp.II-593-II-597, June 1999.