A 57-dB image band rejection CMOS G/sub m/-C polyphase filter with automatic frequency tuning for Bluetooth

Bo Shi Bo Shi,P Andreani,Weiyun Shan Weiyun Shan

doi:10.1109/iscas.2002.1010667

A 57-dB image band rejection CMOS G/sub m/-C polyphase filter with automatic frequency tuning for Bluetooth

Bo Shi Bo Shi, P Andreani + Show 1 more

https://doi.org/10.1109/iscas.2002.1010667

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Publication Date: Aug 7, 2002

Citations: 13

Affiliation: Lund University

#Automatic Frequency Tuning #On-chip Automatic Frequency Tuning + Show 8 more

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Abstract

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.

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