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; circuit tuning; gyrators; inductors; 2.5 V; 5 GHz; CMOS differential active inductor; MOSFET; RF integrated circuit; gyrator; intrinsic capacitance; self-resonant frequency; tunable inductance; tunable quality factor; Active inductors; CMOS technology; Circuit optimization; Equivalent circuits; Gyrators; Inductance; MOSFETs; Q factor; Radio frequency; Transconductance;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2001. Digest of Papers. 2001 IEEE
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6601-8
DOI :
10.1109/RFIC.2001.935691
