Analysis and Optimization of RF Front-End for MICS Band Receiver

Mouna Bettaieb, Saif Benali, G. Bouzid, H. Trabelsi
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引用次数: 2

Abstract

An optimized receiver RF front-end, including inductorless Balun LNA and voltage driven double balanced passive mixer for medical implant communication service (MICS) is presented. The system operates in the 402–405 MHz MICS band. Balanced output, noise and distortion canceling were used in LNA design to achieve 29.26 dB of gain and 2.9 dB of NF. A 25% duty cycle, fully-differential voltage driven double balanced passive mixer is used. With this duty cycle the mixer is less sensitive to LO rise and fall time which will enhance noise figure and linearity. Simulated in 0.18 μm CMOS process, the front-end achieves a gain of 22dB, a NF of 3.05dB, a good linearity demonstrated by the P-ldBof – 14.3dBm, IIP3 of 3.74dBm and IIP2 >50dBm. The front-end consumes 7.2mW from 1.8V power supply.
MICS波段接收机射频前端分析与优化
提出了一种用于医疗植入物通信服务(MICS)的接收机射频前端优化方案,包括无电感Balun LNA和电压驱动双平衡无源混频器。系统工作在402-405 MHz MICS频段。在LNA设计中,采用平衡输出、噪声和失真消除技术,增益达到29.26 dB, NF达到2.9 dB。采用25%占空比,全差分电压驱动双平衡无源混频器。有了这个占空比,混频器对LO上升和下降时间不太敏感,这将增强噪声系数和线性度。在0.18 μm CMOS工艺中仿真,前端增益为22dB, NF为3.05dB,线性度良好,P-ldBof为- 14.3dBm, IIP3为3.74dBm, IIP2 >50dBm。前端1.8V电源消耗7.2mW。
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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