用FPGA设计调频广播监测频率合成器  

Frequency synthesizer for FM broadcast monitoring based on FPGA

作　　者：焦杰 仲影 JIAO Jie ZHONG Ying(Radio ＆ Television Research Institute of Jilin Province, Changchun 130041, China JiLin media Changchun branch,Changchun 130041, China)

机构地区：[1]吉林省广播电视研究所,吉林长春130041 [2]吉视传媒长春分公司,吉林长春130041

出　　处：《电声技术》2016年第11期34-39,共6页Audio Engineering

摘　　要：对调频广播无线电信号的监管工作中,需要用无线电干涉仪测定电台的方位。与节目内容收测工作只关心信号的振幅和频率参数不同,因为测向工作是测量信号的相位信息,所以作为本机振荡器的频率合成器需要有较高的相位噪声指标。用FPGA设计的频率合成器,采用了小数分频方式,结合FPGA内部设计的CPU软核组成调频广播监测设备。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。Radio interferometer is used to measure the location of the radio station in the supervision of FM radio signals. It is different from program content reception and monitoring, radio interferometer measures the phase information to calculate the direction of the signal. It needs to have a higher technical target of phase noise to work as the local oscillator. To describe the fraetion-N synthesizer designed by FPGA with the internal CPU IP core in the FM radio monitoring equipment. This circuit has been successfully applied to the radio and television monitoring equipment.

关 键 词：FPGA 锁相环 小数分频器 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]