Title :
Miniaturized 3-dimensional transformer design
Author :
Chen, Wei-Zen ; Hsu, Kuo-Ching
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao-Tung Univ., Hsin-Chu
Abstract :
3D fully-symmetric transformers are proposed and realized in a standard CMOS technology. In contrast to their planar counterparts, the self resonant frequency (fSR) of the proposed architecture is improved by 26% to 53%, while the chip area is reduced by 40% to 70%. The coupling coefficient (K) can be up to 0.77 at 8 GHz in a two turn two layer architecture. Distributed capacitance model (DCM) of the 3D transformer is also proposed for fSR evaluation
Keywords :
CMOS integrated circuits; microwave integrated circuits; transformers; 3D transformer design; 8 GHz; CMOS technology; coupling coefficient; distributed capacitance model; self resonant frequency; two layer architecture; CMOS technology; Circuits; Impedance matching; Inductance; Inductors; Q factor; Radio frequency; Resonant frequency; Strontium; Wire;
Conference_Titel :
Custom Integrated Circuits Conference, 2005. Proceedings of the IEEE 2005
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-9023-7
DOI :
10.1109/CICC.2005.1568661
