5Azizi P M, Sorensen H V, van der Spiegel J. An overview of sigma-delta converters [J]. IEEE Signal Processing Magazine, 1996, 13(1):61-84.
6Stewart R W, Pfann E. Oversampling and sigma delta strategies for data conversion[J]. Electronics & Communication Engineering Journal, 1998, 10(1) :37-47.
7Candy J. Decimation for sigma-delta modulation[J]. IEEE Transactions on Communication, 1986, 34(1): 72-76.
8Hogenauer E B. An economical class of digitai filters for decimation and interpolatlon [J]. IEEE Trans ASSP, 1981, 29(2): 155-162.
9Jantzi S A, Schreier R, Sneigrove W M, The design of bandpass delta-sigma ADCs in delta-sigma-data converters: theory, design and simulation[M]. New York: IEEE Press, 1997: 282-308.
10Gao W, Snelgrove W M. A 950-MHz IF second order integrated LC bandpass delta-sigma modulator[J]. IEEE Journal of Solid state Circuits, 1998,33(5):723-732.