An integrated SAW-less narrowband RF front-end

M. Abouzied, Hattem Osman, A. Mohieldin, A. Emira, A. Soliman
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引用次数: 5

Abstract

In this paper an integrated SAW-less narrowband RF front-end for direct conversion wireless receivers is presented. The analysis of the feedback system shows a shift of the center frequency fRX for the overall RF bandpass filter from its nominal value fLO. The proposed architecture incorporates a notch filter at 2fLO to insure that there is no shift in fRX. The design has been implemented in 65nm CMOS process. It consumes 44mA from a single 1.2V supply. Simulation results show a rejection of more than 15dB in a bandwidth of +/−500MHz around 2GHz due to the additional feedback loop. The theoretical and simulation results are in close agreement.
集成无saw窄带射频前端
本文提出了一种用于直接转换无线接收机的集成无saw窄带射频前端。对反馈系统的分析表明,整个RF带通滤波器的中心频率fRX从其标称值fLO发生了移位。所提出的架构在2fLO处包含一个陷波滤波器,以确保在fRX中没有移位。该设计已在65nm CMOS工艺上实现。它从单个1.2V电源消耗44mA。仿真结果表明,由于额外的反馈回路,在2GHz左右的+/ - 500MHz带宽内抑制大于15dB。理论与仿真结果吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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