DMR终端锁相调频接收机设计  

Design of PLL FM Receiver for DMR Terminal

作　　者：李伟[1] 杨鹏[1] 杨懋[1] 

机构地区：[1]西安电子科技大学信息科学研究所,陕西西安710071

出　　处：《电子科技》2009年第9期20-24,共5页Electronic Science and Technology

摘　　要：DMR通信系统,是国际ETSI组织正在完善的最新专业数字移动通信标准。作为新一代数字通信系统DMR正在引起越来越多的重视,开发DMR数字终端设备也成为市场的迫切需求。本设计提出了一种由MAX2620、MB15E03组成的锁相环频率合成器提供本振,经过MAX2680和TA31136两次下变频,最后鉴频得到语音信号的接收机方案。本方案具有成本低、性能良好、接受灵敏度高、覆盖范围广等优点,并应用在已开发的DMR数字终端设备上。DMR is the latest digital mobile communication system which the ESTI is developing on, as the new communication system, DMR is engaging more and more concentration from communication organizations and device providers. It is introduced in this paper that the design of FM Receiver for the DMR digital terminal. The LO is provided by the PLL which is composed of MAX2620 and MB15E03, and then the RF signal mix with the LO through the down_mixer of MAX2680 and the demodulator of TA31136, at last the demodulator output the voice signal. The design of FM-PLL transmitter with lower cost, better performance and larger cover range has already been used in our sample device.

关 键 词：DMR 低噪放 锁相环频率合成器 下变频混频器 鉴频器 

分 类 号：TN85[电子电信—信息与通信工程]