毫米波FMCW收发组件技术研究

The Development of mm wave FMCW Transceiver Modules

本文提出毫米ＦＭＣＷ 收发组件的设计模型。针对这类系统特有的１／ｆ 噪声和ＦＭＡＭ 变换噪声，设计了一种新颖的外差型９４ＧＨｚ 和３５ＧＨｚ ＦＭＣＷ 收发组件。线性调频带宽１０００ＭＨｚ，发射功率２０～５０ｍ Ｗ，目标检测灵敏度－ １５０ｄＢｃ／Ｈｚ。该设计较常规的“零拍型”检测灵敏度改善２０ｄＢ。对同等检测距离，可节省发射功率一个数量级以上。

A model for the design of mm wave FMCW Transce iver has been proposed,which aims at reducing the 1/f noise and FM AM conversio n noise in the system.The novel 94GHz & 35GHz heterodyne FMCW transceivers with 1000MHz linear FM bandwidth and more than 20～50mw transmitting RF power have be en developed. -150dBc/Hz Sensitivity for detecting objects are achieved,that mea ns S/N is 20dB better than the conventional homodyne FMCW modules and therefore more than one order of transmitting RF power can be reduced for achieving the sa me detected ranges.