Title :
A 2.5 V CMOS differential active inductor with tunable L and Q for frequencies up to 5 GHz
Author :
Grozing, M. ; Pascht, A. ; Berroth, M.
Author_Institution :
Inst. of Electr. & Opt. Commun. Eng., Stuttgart Univ., Germany
Abstract :
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.
Keywords :
CMOS analogue integrated circuits; Q-factor; UHF integrated circuits; circuit tuning; field effect MMIC; gyrators; inductance; integrated circuit design; 2.5 V; 5 to 5.6 GHz; CMOS differential active inductor; differential gyrator; emulated inductance; quality factor; self-resonant frequency; tunable Q; tunable inductance; Active inductors; Circuit optimization; Equivalent circuits; Gyrators; Inductance; MOSFETs; Optical amplifiers; Q factor; Radio frequency; Transconductance;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.966959
