DocumentCode
3491518
Title
0.13 μm CMOS Cartesian loop transmitter IC with fast calibration and switching scheme from opened to closed loop
Author
Otaka, Shoji ; Hosoya, Masahiro ; Ishihara, Hiroaki ; Hashimoto, Toru ; Araki, Yuta
Author_Institution
Corp. R&D Center, Toshiba Corp., Kawasaki
fYear
2008
fDate
15-19 Sept. 2008
Firstpage
342
Lastpage
345
Abstract
A 0.13 mum CMOS Cartesian loop transmitter IC with calibration and loop setting scheme of less than 5 mus is fabricated in order to keep high efficiency in wide output power range. The proposed scheme adjusts amplitude, phase, loop gain by using TX modulated signal for fast loop setting. Adjacent channel power leakage ratio (ACPR) is improved by 18 dB. The transmitter IC without PA consumes 62 mA, in which feedback path consumes 22 mA.
Keywords
CMOS integrated circuits; calibration; transmitters; CMOS Cartesian loop transmitter IC; adjacent channel power leakage ratio; calibration; current 22 mA; current 62 mA; loop setting scheme; size 0.13 mum; switching scheme; CMOS integrated circuits; Calibration; Feedback loop; Gain; Multiaccess communication; Output feedback; Phase detection; Power generation; Switches; Transmitters;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2008. ESSCIRC 2008. 34th European
Conference_Location
Edinburgh
ISSN
1930-8833
Print_ISBN
978-1-4244-2361-3
Electronic_ISBN
1930-8833
Type
conf
DOI
10.1109/ESSCIRC.2008.4681862
Filename
4681862
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