Title :
Enhanced tuneable coupled inductor for ultra-wide variable centre frequency LC filters
Author :
Worapishet, Apisak ; Ninyawee, S. ; Chongcheawchamnan, M.
Author_Institution :
Mahanakorn Microelectron. Res. Centre, Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
An LC bandpass filter with ultra-wide frequency tuning ability is presented based upon an improved magnetically-coupled inductance tuning scheme. In comparison to the elementary arrangement, the modified tuning scheme switches the input to the opposite port with inherently less associated loss thus enhancing the intrinsic quality factor. Verified via simulations in a 0.8 μm BiCMOS process, the designed 2nd-order LC bandpass filter achieves more than 500 MHz tuning range extending from 0.7 to 1.2 GHz (equivalent to over 50% frequency tuning capability) at a single 2-V supply voltage and 9 mW power consumption.
Keywords :
BiCMOS integrated circuits; Q-factor; UHF filters; UHF integrated circuits; band-pass filters; circuit simulation; circuit tuning; continuous time filters; inductors; integrated circuit modelling; 0.7 to 1.2 GHz; 0.8 micron; 2 V; 9 mW; BiCMOS process simulations; LC bandpass filter; continuous-time filter; enhanced tuneable coupled inductor; input port switching loss; intrinsic quality factor; magnetically-coupled inductance tuning; modified tuning scheme; power consumption; supply voltage; tuning range; ultra-wide frequency tuning ability; ultra-wide variable centre frequency LC filters; Band pass filters; BiCMOS integrated circuits; Frequency; Inductance; Inductors; Magnetic separation; Process design; Q factor; Switches; Tuning;
Conference_Titel :
Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on
Print_ISBN :
0-7803-7690-0
DOI :
10.1109/APCCAS.2002.1114969
