Title :
A 130M to 1GHz digitally tunable RF LC-tracking filter for CMOS RF receivers
Author :
Kanazawa, Yusuke ; Fujimoto, Yoshihisa ; Iizuka, Kunihiko
Author_Institution :
Electron. Components & Device Dev. Group, Sharp Corp., Tenri
Abstract :
A widely tunable RF LC-tracking filter is developed for tackling the odd harmonic mixing problem in wideband CMOS RF receivers. The filter is composed of two cascaded RLC tanks, where proposed programmable transconductor stages with built-in LPF are used. IIP3 of 127.7 dBmuV and input-referred noise of 20.1 dBmuV over signal band of 5.6 MHz are confirmed by measurements. The chip, fabricated in 0.18 mum CMOS process, occupies 2.8 mm2 and draws 34-120mA from a 1.8V supply.
Keywords :
CMOS integrated circuits; radio receivers; radiofrequency filters; tracking filters; current 34 mA to 120 mA; frequency 5.6 MHz; input-referred noise; odd harmonic mixing; programmable transconductor; tunable RF LC-tracking filter; voltage 1.8 V; wideband CMOS RF receivers; Active filters; Band pass filters; Digital filters; MIM capacitors; Power harmonic filters; Radio frequency; Receivers; Resistors; Transconductors; Tuning;
Conference_Titel :
Solid-State Circuits Conference, 2008. A-SSCC '08. IEEE Asian
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-2604-1
Electronic_ISBN :
978-1-4244-2605-8
DOI :
10.1109/ASSCC.2008.4708829
