微波脉宽对检波器性能影响的实验研究

 采用脉宽20~120 ns、步长10 ns的微波信号，对WB-CD01型、2087-6001-00型同轴检波器的灵敏度和检波波形进行了实验研究。实验结果表明：脉宽为20~120 ns时，在2.7 GHz频率下，WB-CD01型检波器灵敏度比连续波时的降低0.5~0.7 dB，而2087-6001-00型检波器灵敏度比连续波时的降低近1 dB。在4.1 GHz频率下，WB-CD01型检波器在微波脉宽为20 ns时，检波灵敏度略高于连续波时的近0.2 dB，其它给定脉宽下，检波灵敏度与连续波时的基本一致；2087-6001-00型检波器不同脉冲宽度条件下与连续波时的灵敏度基本一致。WB-CD01型检波器的检波波形前沿出现过脉冲，而2087-6001-00型检波器无此现象。

Experimental study on effect of microwave pulse-width on detector feature

Experiments are carried out to study the sensitivity and detected waveforms for two types of detectors,WB-CD01 and 20876001-00,with microwave signals of pulse-width varying from 20 ns to 120 ns in a step of 10 ns.At 2.7 GHz,when the pulse-width changes from 20 ns to 120 ns,the sensitivity of WB-CD01 type is 0.5~0.7dB lower than in the case of continuous wave(CW),while it is about 1dB lower than that of 2087-6001-00 type in the CW case.At 4.1 GHz,given the pulse-width of 20 ns,the sensitivity of WB-CD01 type is about 0.2 dB higher than in the CW case,while it is almost the same as the CW case for the other given pulse-width.For all the given pulse-width at 4.1 GHz,the sensitivity of 2087-6001-00 type is almost the same as in CW case.In the cases of pulsed microwaves,an overshoot occurs in the front part of the detected waveform only for WB-CD01 type.