Title :
A novel variable inductor using a triple transformer and MOS switches in 0.13 μm CMOS technology
Author :
Sun, Jiangtao ; He, Shihai ; Zhu, Xuewen ; Liu, Qing ; Yoshimasu, Toshihiko
Author_Institution :
Grad. Sch. of Inf., Production & Syst., Waseda Univ., Kitakyushu, Japan
Abstract :
This paper presents a novel variable inductor consisting of a triple transformer, pMOSFET switches and a level shift circuit in 0.13 μm CMOS technology. The structure of the variable inductor is designed and analyzed by using Ansoft HFSS. The inductance varies from 0.678 nH to 1.055 nH with changing a control voltage from 0 to 1.5 V. The quality factor of the variable inductor is around 7 at 3.4 GHz.
Keywords :
CMOS integrated circuits; field effect transistor switches; inductors; transformers; Ansoft HFSS; CMOS technology; MOS switches; frequency 3.4 GHz; level shift circuit; pMOSFET switches; size 0.13 mum; triple transformer; variable inductor; Couplings; Inductance; Inductors; MOSFET circuits; Q factor; Voltage control; Windings;
Conference_Titel :
Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4577-0625-7
Electronic_ISBN :
978-7-308-08555-7
