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A 2.5 V CMOS differential active inductor with tunable L and Q for frequencies up to 5 GHz

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3 Author(s)
Grozing, M. ; Inst. of Electr. & Opt. Commun. Eng., Stuttgart Univ., Germany ; Pascht, A. ; Berroth, M.

A differential active inductor in CMOS technology with a supply voltage of 2.5 V is presented. A self-resonant frequency of 5.6 GHz is achieved. The value of the inductance L can be controlled in the range from 10 nH up to 100 nH. The quality factor Q can be tuned independently of L to values as large as 600. The active inductor is realized with a differential gyrator. The gyrator transforms intrinsic capacitances of the MOSFETs to the emulated inductance.

Published in:

Microwave Symposium Digest, 2001 IEEE MTT-S International  (Volume:1 )

Date of Conference:

20-24 May 2001