Title :
CMOS low-power bandpass IF filter for Bluetooth
Author :
Alzaher, H. ; Al-Ghamdi, M. ; Ismail, M.
Author_Institution :
Dept. of Electr. Eng., Dhahran
fDate :
2/1/2007 12:00:00 AM
Abstract :
Design of a CMOS 18th-order IF (intermediate frequency) bandpass filter for integrated low-IF Bluetooth receivers is presented. The centre frequency and bandwidth of the filter are 3 and 1 MHz, respectively. The proposed filter is based on unity gain fully differential voltage buffers and provides efficient, low power and a small area design solution. The filter, including its automatic tuning circuit, occupies an area of 0.6 mm2 in a standard 0.5 mum-CMOS chip. Experimental results show that the filter satisfies the selectivity and dynamic range requirements of Bluetooth while operating from a total supply current of 0.9 mA
Keywords :
Bluetooth; CMOS analogue integrated circuits; band-pass filters; low-power electronics; radio receivers; 0.5 micron; 0.9 mA; 1 MHz; 18th-order buffer-based filter; 3 MHz; Bluetooth receivers; CIVIOS low-power bandpass IF filter; automatic tuning circuit; intermediate frequency filter; unity gain fully differential voltage buffers;
Journal_Title :
Circuits, Devices & Systems, IET
DOI :
10.1049/iet-cds:20050355
