Title :
Digital I/Q demodulation and digital filtering for a DAB receiver
Author :
Andre, Eric ; Martel, Gilbert ; Senn, Patrice
Author_Institution :
DTM/CET, CNET Grenoble, France
Abstract :
A digital I/Q demodulator followed by two paths of decimation is presented as a solution to improve the integration level of a DAB receiver. This digital system was designed to work with a bandpass ΣΔ modulator. So that the digital filters attenuate both quantization noise and adjacent channels. An integrated circuit was fabricated in 0.25-μm CMOS technology for a working frequency of 30.720 MHz. The power consumption is equal to 5.6 mW for a 1.0-V supply voltage and the chip size is about 6.8 mm2 including pads
Keywords :
CMOS digital integrated circuits; demodulation; digital audio broadcasting; digital filters; quantisation (signal); radio receivers; sigma-delta modulation; 0.25 micron; 1.0 V; 30.720 MHz; 5.6 mW; CMOS technology; DAB receiver; adjacent channels; bandpass ΣΔ modulator; chip size; decimation paths; digital I/Q demodulation; digital filtering; integration level; power consumption; quantization noise; Band pass filters; CMOS integrated circuits; CMOS technology; Demodulation; Digital filters; Digital modulation; Digital systems; Filtering; Integrated circuit noise; Quantization;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.777835
