DocumentCode
3255482
Title
On-chip broadband tuner design for cable modem and digital CATV
Author
Hajirostam, Mohammad ; Martin, Ken
Author_Institution
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
fYear
2005
fDate
7-10 Aug. 2005
Firstpage
1374
Abstract
In this paper, a new low-IF architecture for an on-chip implementation of a cable modem receiver is presented. In this receiver, a low power, area efficient digital filter is used to achieve 60dB adjacent channel rejection. A new adaptive analog-digital image-reject technique is also used, which improves the image-rejection ratio to 57dB. Therefore, high-Q, off-chip, SAW filters are not required. Simulations show that a signal-to-interference ratio of 34dB is achieved for a 256QAM transmitted signal.
Keywords
cable television; digital television; modems; television receivers; adjacent channel rejection; analog-digital image-rejection; cable modem receiver; digital CATV; digital filter; image-rejection ratio; low-IF architecture; on-chip broadband tuner; signal-to-interference ratio; Bandwidth; CMOS technology; Cable TV; Frequency; Linearity; Modems; Noise measurement; Performance gain; Signal to noise ratio; Tuners;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2005. 48th Midwest Symposium on
Print_ISBN
0-7803-9197-7
Type
conf
DOI
10.1109/MWSCAS.2005.1594366
Filename
1594366
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