调频广播监测设备混频电路的CPLD设计  

CPLD design of down converter for FM broadcasting monitoring equipment

作　　者：马秀飞[1] 焦杰 李海滨 邹德旋[1] 

机构地区：[1]江苏师范大学电气工程及自动化学院,江苏徐州221116 [2]吉林省广播电视研究所,吉林长春130041 [3]吉林省六六一台,吉林长春130119

出　　处：《微型机与应用》2017年第1期93-96,共4页Microcomputer & Its Applications

摘　　要：收测固定频率的节目信号和全频段频谱扫描是无线调频广播监测工作的主要内容,在实际工作中,这两种功能的实现通常分别使用广播接收监测板卡和频谱监测板卡两种不同的设备。根据这两种不同设备高频接收混频电路的共性与差异,介绍了一种以CPLD为核心,具有两种监测功能的电路,可以根据实际应用的需要设置成为其中任意一个工作模式。这种设计方法具有电路简单、成本低、使用灵活的优点。该电路经过在广播电视监测设备中的实际应用,取得了良好的效果。Both receiving fixed frequency signal and spectrum scanning are the main work of the FM broadcast monitoring. These two functions are usually designed with two different equipments. One is FM broadcast receiving board, another is spectrum monitoring board. This paper de- scribed a design method of down converter circuit based on CPLD according to the similarities and differences between the two devices depends on the work mode. The design method has some advantages such as simple circuit, low cost and flexible use. This circuit has been successfully applied in the radio and television monitoring equipment.

关 键 词：下变频器 CPLD 锁相环 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]