摘要
根据微波脉冲功率计对测量精度等指标的要求,此设计采用FPGA技术控制时序和单片机处理高速采样数据相结合的方法,实现了2路脉冲峰值功率信号的检测,并经过RS232串口输出。通过滑窗检测算法、非线性纠正等处理后,微波功率计在最大限度上消除了电磁干扰,提高了测量精度,降低了成本;对工作在4~8 GHz频段的信号,实现了当功率范围处于+18^-8 dBm时,测量误差小于±0.4 dB的精度要求。
According to the demands for measure precision of the microwave power meter, the FPGA is used to control the timing and the MCU is adopted to deal with high-speed sampling of data,thus the detecting of two channels of the pulse peak power signal is achieved and the output of results is given through RS232. After sliding window detection and nonlinear correction, the power meter avoids the electromagnetic interference maximally, the measure precision is improved and the cost reduced. When the signal frequencies are between 4 GHz and 8 GHz and the power is from -8 dBm to ＋18 dBm, the measure error of the power meter is less than ±0.4 dB.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期880-882,889,共4页
Journal of Hefei University of Technology：Natural Science
