Programmable Switched Capacitor Finite Impulse Response Filter with Circular Memory Implemented in CMOS 0.18 μm Technology

被引：0

作者：

Rafał Długosz

Krzysztof Iniewski

机构：

[1] University of Neuchâtel,Institute of Microtechnology

[2] University of Alberta,Department of Electrical and Computer Engineering

[3] CMOS Emerging Technologies Inc.,undefined

来源：

Journal of Signal Processing Systems | 2009年 / 56卷

关键词：

Baseband filtering; WCDMA; GSM; Switched capacitor technique (SC); Finite impulse response (FIR) filter; Programmable filter;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This paper presents a programmable multi-mode finite impulse response (FIR) filter implemented as switched capacitor (SC) technique in CMOS 0.18 μm technology. Intended application of the described circuit is in analog base-band filtering in GSM/WCDMA systems. The proposed filter features a regular structure that allows for elimination of some parasitic capacitances, thus significantly improving the filtering accuracy. Due to its modularity that allows for dividing the circuit into two separate sections, the circuit can be easily reconfigured to work as either infinite impulse response (IIR) or as finite impulse (FIR) filter. One of the key components that allows for this multi-mode operation is the proposed programmable and ultra low power multiphase clock circuit. The 24-taps filter for the sampling frequency of 30 MHz dissipates power of 4.5 mW from a 1.8 V supply.

引用

页码：295 / 306

页数：11

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