Title :
Extremely high-Q stacked transformer-type inductors for RF applications
Author :
Lim, S.F. ; Yeo, K.S. ; Ma, J.G. ; Do, M.A. ; Chew, K.W. ; Chu, S.-F.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A stacked tunable inductor with extremely high quality factor (Q) (>2000) is presented. Compared with transformer-type inductors with interleaved configuration, full-wave electromagnetic (EM) simulation results demonstrate that the stacked structure offers greater advantages in terms of area efficiency, achievable inductance value, and peak Q frequency. Besides, detailed discussions on power levels at the inputs of driving coils are presented to illustrate the effects of parasitic capacitance between the primary coil and driving coil.
Keywords :
Q-factor measurement; coils; power inductors; Q-factor; driving coil; full wave EM simulation; full wave electromagnetic simulation; parasitic capacitance; primary coil; quality factor; transformer type inductor; Coils; Couplings; Inductance; Inductors; Phase transformers; Q factor; Radio frequency; Radiofrequency amplifiers; Spirals; Tunable circuits and devices;
Conference_Titel :
VLSI Technology, Systems, and Applications, 2003 International Symposium on
Print_ISBN :
0-7803-7765-6
DOI :
10.1109/VTSA.2003.1252574
