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

Volume

1

fYear

2002

fDate

2002

Firstpage

355

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on

Print_ISBN

0-7803-7690-0

Type

conf

DOI

10.1109/APCCAS.2002.1114969

Filename

1114969