Title :
A custom digital intermediate frequency filter for the American mobile telephone system
Author :
Nilsson, Peter ; Torkelson, Mats
Author_Institution :
Dept. of Appl. Electron., Lund Univ., Sweden
fDate :
6/1/1997 12:00:00 AM
Abstract :
A digital filter for intermediate frequency filtering in mobile communication systems is presented. The purpose of the work is to show an alternative to the analog filters which are used in most of today´s heterodyne receivers. Bit-serial arithmetic is applied on a twelfth-order wave digital lattice filter algorithm. The paper also shows a method for retiming such algorithms. The power consumption in two fabricated prototypes is compared. By customizing the library cells, the power consumption has been reduced significantly. In the low power prototype, the power dissipation is 8 mW using 3 V supply voltage. The prototype is a 10 MIPS design fabricated in a 0.8-μm standard two-metal-layer CMOS process
Keywords :
CMOS digital integrated circuits; application specific integrated circuits; band-pass filters; digital arithmetic; integrated circuit layout; land mobile radio; lattice filters; timing; wave digital filters; 0.8 mum; 10 MIPS; 3 V; 8 mW; American mobile telephone system; algorithm retiming; bandpass filter; bit-serial arithmetic; custom digital intermediate frequency filter; digital filter; heterodyne receivers; library cell customization; mobile communication systems; power consumption; power dissipation; supply voltage; twelfth-order wave digital lattice filter algorithm; two-metal-layer CMOS process; Digital arithmetic; Digital filters; Energy consumption; Filtering; Frequency; Lattices; Mobile communication; Power dissipation; Prototypes; Software libraries;
Journal_Title :
Solid-State Circuits, IEEE Journal of
