DocumentCode :
1373060
Title :
Analysis and design of a high-Q differential active inductor with wide tuning range
Author :
Li, Cong ; Gong, Fang ; Wang, Peng
Author_Institution :
Dept. of Electr. & Comput. Eng., Clemson Univ., Clemson, SC, USA
Volume :
4
Issue :
6
fYear :
2010
fDate :
11/1/2010 12:00:00 AM
Firstpage :
486
Lastpage :
495
Abstract :
The analysis and design of a high-Q differential active inductor with wide tuning range is presented in this study. The self-resonant frequency (SRF) and quality factor (Q) of the inductor can be tuned independently. The inductor was implemented in a 0.13 μm CMOS process. The measured SRF is tunable from 0.5 to 10.2 GHz. The obtained maximum quality factor is as high as 3000. The analysis shows that higher inductance corresponds to higher inductor noise while the correlation between quality factor and noise is relatively weak. Measurement results confirmed these predictions. The measured results show that this inductor structure is suitable for broadband reconfigurable radio-frequency system development. Further analysis and measurements show that the inductor is intrinsically non-linear, so are gyrator-C-based active inductors in general. A compensation circuit is proposed to improve the linearity characteristics of such inductors.
Keywords :
CMOS integrated circuits; MMIC; Q-factor; UHF integrated circuits; compensation; gyrators; inductors; CMOS process; Q-factor; broadband reconfigurable radio-frequency system; compensation circuit; frequency 0.5 GHz to 10.2 GHz; gyrator-C-based active inductors; high-Q differential active inductor design; inductor noise; quality factor; self-resonant frequency; size 0.13 mum;
fLanguage :
English
Journal_Title :
Circuits, Devices & Systems, IET
Publisher :
iet
ISSN :
1751-858X
Type :
jour
DOI :
10.1049/iet-cds.2010.0011
Filename :
5624842
Link To Document :
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