一种智能化锁相环频率合成器  

An Intelligent Frequency Synthesizer with a Phase-Locked Loop

作　　者：杨志人[1] 王凡[1] 高行新 曹树平 

机构地区：[1]华中理工大学电子与信息工程系

出　　处：《华中理工大学学报》1995年第10期87-91,共5页Journal of Huazhong University of Science and Technology

摘　　要：面向移动通信系统设计了一种智能化锁相环频率合成器，运用了吞脉冲技术和锁相技术等技术；该频率合成器输出频率：１３８．０２５～１６７．０００ＭＨｚ，以２５ｋＨｚ为频道间隔，覆盖频道数可达１１６０个，具有较高稳定度。采用单片机对频率合成器进行运算和控制，可实现置频、取频、空闲频道搜索、纠错等功能。An intelligent frequency synthesizer with a phase-locked loop has been designed for usein a mobile communication system. The application of the large-scale integrated circuit ele-ment MC145156 and the adoption of new techniques such as pulse swallowing,phase-lockingand the auxiliary low-pass filter has made the synthesizer highly reliable and stable. Its out-put frequency range is 138. 025～167, 000 MHz. If the interval between two channels is25 kHz, the total channel number of the synthesizer can be as much as 1 160. A single-chipmicrocomputer is used for the calculation adn control and many intelligent functions such aschannel frequency setting , frequency finding,idle channel searching , correction of frequencydeviation , etc. can be implemented.

关 键 词：移动通信 智能化 锁相环 频率合成器 

分 类 号：TN74[电子电信—电路与系统] TN914.5