Title :
A complex bandpass ΔΣ converter for digital radio
Author :
Jantzi, S. ; Martin, K. ; Snelgrove, M. ; Sedra, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
fDate :
30 May-2 Jun 1994
Abstract :
A new architecture is proposed for a single-chip digital radio receiver. This architecture has several advantages over the direct-conversion architecture that has been gaining interest for use in single-chip designs. A non-zero quadrature IF reduces the image problem and eliminates concerns about self-EMI and 1/f noise. A complex bandpass filter embedded in a delta-sigma loop allows the A/D conversion to be performed directly on the pair of quadrature outputs from the mixer
Keywords :
band-pass filters; digital radio; land mobile radio; mobile radio; modulators; radio receivers; sigma-delta modulation; A/D conversion; architecture; complex bandpass ΔΣ converter; complex bandpass filter; delta-sigma convertor; delta-sigma loop; digital radio; nonzero quadrature IF; quadrature outputs; single-chip digital radio receiver; Band pass filters; Baseband; Digital communication; Digital signal processing; Distortion; Filtering; Narrowband; Radio frequency; Receivers; Transfer functions;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409407
