具有A/D的程控接收机的原理与实现  

Realization and Principle of Program-Controlled Receiver With A/D

作　　者：罗建[1] 马定坤[1] 肖妮[1] 杨乐[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《测控技术》2007年第7期79-81,83,共4页Measurement & Control Technology

摘　　要：提出了一种新型的带有A/D的程控接收机的基本结构,分析了电路的工作原理。系统采用微功耗的单片机进行信号幅度的采集及系统增益、带宽的控制。通过对输入信号特性的分析,确定控制门限,采用PID控制算法模拟常规模拟AGC的工作特性,经实验室测试,验证了该方案的有效性。A new kind of program-controlled receiver which has A/D is presented, and the operating principle of the circuit is analyzed. The system adopts controller which is low power consumption. The controller samples amplitude of the signal to decide gaining and bandwidth of the system. By analyzing the characteristics of input signal, the threshold is determined, and PID algorithm to simulate the operating characteristic of analog AGC is employed. By laboratory test, the result proves validity of the scheme.

关 键 词：具有A/D的程控接收机 PID控制 自动增益控制 

分 类 号：TP21[自动化与计算机技术—检测技术与自动化装置]