A 57-dB image band rejection CMOS GmC polyphase filter with automatic frequency tuning for Bluetooth

Summary, in English

A 7th order polyphase G/sub -m/C IF filter with automatic frequency tuning, implemented in a 0.35/spl mu/m CMOS process, is presented. The filter has a center frequency of 3MHz and a passband of 1MHz. The image band rejection is higher than 57dB, the stop band attenuation is at least 40dB. The in-band spurious free dynamic range is around 53dB. On-chip automatic frequency tuning provides more than 240% center frequency range (i.e., 1.6MHz-3.9MHz) of the filter. The filter is well suited for employment in the Bluetooth short-range radio.

• Author: Bo Shi; Weiyun Shan; Pietro Andreani
• Department/s: Department of Electrical and Information Technology
• Publishing year: 2002
• Language: English
• Pages: 169-172
• Publication/Series: IEEE International Symposium on Circuits and Systems, 2002. ISCAS 2002.
• Volume: 5
• Links: http://ieeexplore.ieee.org/iel5/7897/21767/01010667.pdf; http://dx.doi.org/10.1109/ISCAS.2002.1010667
• Document type: Conference paper
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Status: Published
• ISBN/ISSN/Other: ISBN: 0-7803-7448-7