基于成本控制角度卫星移动通信终端的零中频接收机设计  

Design of Zero-IF Receiver of Satellite Mobile Communication Terminal Based on Cost Control Point

作　　者：许敏[1] 陈伟[2] 

机构地区：[1]河海大学,江苏南京211100 [2]电信科学技术第一研究所,上海200032

出　　处：《电子测试》2014年第5期5-7,共3页Electronic Test

摘　　要：以往卫星移动终端的接收机其功耗大,价格高,使得公司设备预算居高不下,尤其对于中小型的通信公司而言,更是急于降低这项成本。零中频(Zero-IF)接收机又称为直接变频(Direct Conversion)接收机,其结构简单,具有很高集成度,对镜像信号抑制的要求也不高,且功耗较小也使得成本较低。因此采用零中频结构来实现无线接收机是未来的一个趋势,正成为射频接收机中极具竞争力的一种构案。Receiver of satellite mobile terminals in past is of great power consumption,high price,which make company＆#39;s’equipment budget high,especially for small and medium-sized communications company.Zero intermediate frequency（Zero-IF） receiver is also known as（Direct Conversion receiver which has simple structure and high integration.Meanwhile,the requirement of image signal suppression is not high.Less power consumption make it cost less.So it is a trend to use Zero-IF structure to realize the wireless receiver in the future.Zero-IF structure is becoming a highly competitive in RF receiver.

关 键 词：成本控制 零中频接收机 直流偏差 

分 类 号：TN927.23[电子电信—通信与信息系统] TN858[电子电信—信息与通信工程]