DocumentCode
1549110
Title
A CMOS quadrature modulator for wireless communication IC
Author
Lin, P.F. ; Lou, J.H. ; Kuo, J.B.
Author_Institution
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume
44
Issue
6
fYear
1997
fDate
6/1/1997 12:00:00 AM
Firstpage
559
Lastpage
561
Abstract
This brief presents a CMOS digital quadrature modulator, which is based on a CMOS digital modulator and a five-level digital-to-analog converter, for wireless communication IC. In the digital modulator, a circular shift register is used to produce a continuous sinusoidal wave with different phases. With this technique, the quadrature modulator has advantages in low power consumption, small area, and expansion capability
Keywords
CMOS digital integrated circuits; digital-analogue conversion; modulators; radio equipment; shift registers; CMOS digital quadrature modulator; circular shift register; digital-to-analog converter; low power circuit; sinusoidal wave; wireless communication IC; Baseband; CMOS digital integrated circuits; CMOS integrated circuits; Continuous phase modulation; Digital modulation; Digital-analog conversion; Energy consumption; Frequency; Shift registers; Wireless communication;
fLanguage
English
Journal_Title
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
Publisher
ieee
ISSN
1057-7122
Type
jour
DOI
10.1109/81.586031
Filename
586031
Link To Document