Compact, High-$Q$, and Low-Current Dissipation CMOS Differential Active Inductor

This letter presents an improved, compact, and tunable high-Q differential active inductor implemented in Silterra's industry standard 0.18 mum CMOS process. The improved differential active inductor demonstrates a Q ap 1000 at high frequency region. Low-current dissipation is achieved by reusing the current from the differential gyrator for stabilizer and negative impedance circuit. A replica bias circuit has been introduced to allow current-controlled inductance of the improved differential active inductor. Sensitivity of the improved differential active inductor to process variation is also included in this letter.

[1]  Liang-Hung Lu,et al.  A miniaturized Wilkinson power divider with CMOS active inductors , 2005 .

[2]  Dominic DiClemente,et al.  Current-Mode Phase-Locked Loops— A New Architecture , 2007, IEEE Transactions on Circuits and Systems II: Express Briefs.

[3]  Apinunt Thanachayanont.  CMOS transistor-only active inductor for IF/RF applications , 2002, 2002 IEEE International Conference on Industrial Technology, 2002. IEEE ICIT '02..

[4]  Abu Khari bin A'ain,et al.  CMOS source degenerated differential active inductor , 2008 .

[5]  G.V. Eleftheriades,et al.  Printed and Integrated CMOS Positive/Negative Refractive-Index Phase Shifters Using Tunable Active Inductors , 2007, IEEE Transactions on Microwave Theory and Techniques.

[6]  A. Thanachayanont,et al.  CMOS floating active inductor and its applications to bandpass filter and oscillator designs , 2000 .

[7]  J. Long,et al.  A Q-factor enhancement technique for MMIC inductors , 1998, 1998 IEEE MTT-S International Microwave Symposium Digest (Cat. No.98CH36192).

[8]  Mohammed Ismail,et al.  RF bandpass filter design based on CMOS active inductors , 2003, IEEE Trans. Circuits Syst. II Express Briefs.

[9]  Yue Wu,et al.  A novel CMOS fully differential inductorless RF bandpass filter , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[10]  Chun-Lee Ler,et al.  Compact, High- $Q$ , and Low-Current Dissipation CMOS Differential Active Inductor , 2008 .