A monolithic clock-recovery circuit used in 622Mb/s optical communication system is designed,which is based on the phase-locked loop theory,,and uses bipolar tr
A emthod of 2-D Fourier transform used in 3-D surface profilometry is proposed,analyzed and compared with 1-D Fourier transform method in theory and practical m
The photovoltage spectra of AlGaAs/GaAs multiple quantum wells at different vacuum have been measured and the vacuum sensitivity of photovoltage in reported.The
A conduction channel model is propsed to explain the high conductivity property of nc-Si:H.Detailed energy band diagram is developed based on the analysis and c
A new type of piezoelectric transducer with compression/shear sense is developed and was successfully tested for measuring three dimension accelerations in shoc