摘要
针对微波信号发生器中功率控制系统的高准确度和大动态范围要求,介绍了一种基于AD公司的宽带功率检测芯片AD8318的微波功率监测系统,给出了其工作原理及软硬件组成。通过对功率电压的测量,由DSP对接收数据进行滤波和线性插值处理,可实现对微波功率的精确控制。该系统的带宽可达8GHz,动态范围达到75dB,可用于微波功率检测和测试。
According to the requirements for high accuracy and wide dynamic range of power control system in a microwave signal generator,a broadband microwave power detecting system is intruduced,which is based on the power measuring chip AD8318.The principle,hardware structure and software expression of this system are put forward.The system measures the power voltage,then DSP deals with the received data with linear interpolation and filter.The microwave power can be controled precisely.The system can be used for power detecting and testing with 8 GHz bandwidth and 75 dB dynamic range.
出处
《国外电子测量技术》
2011年第3期57-59,63,共4页
Foreign Electronic Measurement Technology
