sensitivity amplifier
3.Its frequency band of main amplifier is 200MHz (3dB), output voltage is about 0.8V and its sensitivity is -39dBm at BER=10~(-9).
4.The methods for calibration of new BWO frequency,frequency response and sensitivity of the detector are described in this paper. The results of calibration and adjustment of the MSR system are presented. The design circuit of the IF amplifier for this receiver and its measurement results are also presented.
5.A monofrequency lock-in amplifier for Auger Electon Spectroscopy has been designed and developed with operation frequency of 6299 Hz, sensitivity=1μV_(FS), minimum detectable signal noise ratio (S/N) = 1/50. The principal technical problems have been discussed in this article.
6.The design of a late-model PVDF acoustic sensor based on the acoustic emission techniques is described detailedly in this paper,including the operating principle and the structure of the sensor,and the influence of piezo element,backing material,acoustic matching layer and pre-amplifier on the sensitivity,resolution and signal to noise ratio(SNR) of the sensor.
