Title :
A multi-band RF CMOS LC bandpass filter with continuous frequency tuning design
Author :
Zhiqiang, Gao ; Zhiheng, Lin ; Zhengxiong, Hou ; Yonglai, Zhang ; Qiushuang, Tian
Author_Institution :
Microelectron. Center, Harbin Inst. Technol., Harbin, China
Abstract :
In this paper, a 2nd order tunable RF CMOS LC bandpass filter with the on-chip inductor is presented. Q-enhancement and tuning are also considered. The Q-tuning is implemented through an adjustable negative conductance generator circuit. The simulated results show that the center frequency of the filter using a 0.18μm CMOS process can be operated from 1.90GHz to 2.42GHz frequency band under 3.3V supply by a set of capacitor array and the varactors that achieve the coarse and exact tuning respectively.
Keywords :
CMOS digital integrated circuits; arrays; band-pass filters; tuning; varactors; Q-enhancement; capacitor array; continuous frequency tuning; frequency 1.9 GHz to 2.42 GHz; multiband RF CMOS LC bandpass filter; negative conductance generator circuit; varactors; voltage 3.3 V; Analytical models; CMOS integrated circuits; Capacitors; MOS devices; Radio frequency; Switches; Tuning; LC bandpass filter; Q-enhancement; capacitor array; frequency tuning;
Conference_Titel :
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-7235-2
Electronic_ISBN :
978-1-4244-7237-6
DOI :
10.1109/ICCASM.2010.5620727
