一种零中频通用射频前端的设计及实现

摘要：本文采用零中频结构针对800～2400MHz工作频段设计了一种通用射频前端，该射频前端在一款高性能解调器的基础上，加入宽带低噪声放大器、程控射频AGC电路、电调谐预选滤波器等电路，从而实现灵敏度优于-100dBm/5MHz，动态范围大于100dB的设计指标要求。

Design and Implementation of a general zero-IF RF front-end

Abstract: In this papar, A general RF front-end with Zero-IF structure at a working frequency in 800-2400MHz was designed. This RF front-end bases on a high performance demodulator, including a wide band low noise amplifier, Programmable RF AGC circuit, electrical tuned pre-selection filter etc, and therefore achieve the design criteria with a sensitivity better than -100dBm/5MHz, and a dynamical range larger than 100dB.