一种微波探测声音方法的实现  

The Realization of a Method for Microwave Detecting Sound

作　　者：刘诗伟[1] 林周福[1] 梁生辉[1] 

机构地区：[1]华南师范大学物电学院,广东广州510006

出　　处：《山西电子技术》2011年第5期39-40,82,共3页Shanxi Electronic Technology

摘　　要：提出了一种微波探测声音(微波窃听)的方法,并简要介绍了它的原理和实现方式。通过微波振荡器产生的微波,经天线发射后投射到待测声源处,被声源处的音频信号调制后反射回来,由天线接收后输送到微波晶体检波器检波,再由小电流放大、电压和功率放大等处理,还原出声源处的声音信号,达到探测声音的目的。This paper presents a method of microwave detecting sound（microwave eavesdropping） and briefly introduces the principle and realizaton of it.Microwave oscillator generates microwave that is transmitted by antenna and modulated by sound signal,the modulated signal is reflected back from the sound source.After the signal is received through the antenna,demodulated and amplified,the sound can be restored.

关 键 词：微波探声 幅度调制 检波 

分 类 号：TN015[电子电信—物理电子学]