无线测控定位系统移动终端射频子系统的设计  

Design of RF subsystem of mobile handset in wireless location system

作　　者：欧炜[1] 孙宜进[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《电子测量技术》2009年第2期18-20,共3页Electronic Measurement Technology

摘　　要：本文主要讨论用于某无线测控定位系统的移动终端射频子系统的主要构成电路及芯片选择,并且对芯片要求及电路的设计做相关的讨论。该无线测控网定位系统上行通信为835～837MHz的直接序列扩频通信,实现传输无线定位信号功能;下行通信为280MHz窄带寻呼通信,实现传输命令数据功能。本文通过对该无线测控网定位系统的分析,介绍满足系统要求的射频收发子系统构成及具体芯片,并为系统设计提供必要的分析和计算。This paper focused on the main circuit and choice of chips for the RF subsystems used by the mobile handset in a wireless location system, and discussing the requirements for the chips and the designment of circuit. In the wireless location system, the uplink communication of the system is achieved by 835-837 MHz direct sequence spread spectrum cornmunications; the downlink communication of the system is achieved by narrow-band 280 MHz paging communications. By the analysis of the wireless location system, to introduce one RF transceiver subsystem and chips to meet the requirements of the the wireless location system, and provide the necessary analysis and calculations.

关 键 词：射频子系统 直序扩频 移动终端 无线定位 

分 类 号：TN802[电子电信—信息与通信工程]