用于蓝牙的CMOS g/sub / c中频滤波器

P. Andreani, S. Mattisson
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引用次数: 9

摘要

提出了一种用于蓝牙短距离无线电的18/sup / (4/sup /+14/sup /)阶g/sub / c中频滤波器,以0.6 /spl mu/m的CMOS工艺实现。滤波器带宽为1 MHz,中心频率f/sub c/为3 MHz,带内群延迟变化为0.75 /spl mu/s, f/sub c//spl plusmn/1 MHz处阻带衰减至少为47 dB。本底噪声为250 /spl mu/V/sub r.m.s./,带外信号的无杂散动态范围至少为58 dB,超过了蓝牙要求。2.5 V电源的电流消耗为2.4 mA。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A CMOS g/sub m/-C IF filter for Bluetooth
An 18/sup th/ (4/sup th/+14/sup th/) order g/sub m/-C IF filter for the Bluetooth short-range radio, implemented in a 0.6 /spl mu/m CMOS process, is presented. The filter bandwidth is 1 MHz, the center frequency f/sub c/ is 3 MHz, the in-band group delay variation is 0.75 /spl mu/s, and the stop-band attenuation at f/sub c//spl plusmn/1 MHz is at least 47 dB. The noise floor is 250 /spl mu/V/sub r.m.s./ and the spurious free dynamic range is at least 58 dB for out-of-band signals, thus exceeding the Bluetooth requirements. Current consumption is 2.4 mA from a 2.5 V power supply.
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