摘要
滤波技术的应用是傅里叶变换光谱仪对于光源光谱再现的关键 ,利用连续时间滤波器 Max2 74设计了 Chebyshev带通滤波器 ,结合实际研制的 1 6阶带通滤波器性能与设计指标符合较好。限制了傅里叶变换光谱仪测量频宽 。
The application of filter technology is the key to the reproduction of measuring spectrum of light source by means of Fourier Transform Spectrometer. Chebyshev bandpass filter was designed by the use of second order sections existing in continuous time active filter Max274 and standard resistors. A good agreement was found between the performance of actual 16 order bandpass filter and the result of primary design. This kind of bandpass filter can be used to limit the measuring frequency width according to practical requirement. It can also availably reduce the influence of AC electrical signal coming from mercury lamp source with AC power source in the course of measuring and singal processing of Fourier transform spectrometer.
出处
《光学精密工程》
EI
CAS
CSCD
2000年第2期120-123,共4页
Optics and Precision Engineering
基金
应用光学国家重点实验室基金资助课题
关键词
傅里叶变换光谱仪
高阶有源滤波器
带通滤波器
Fourier transform spectrometer
high order active filter
second order section
Chebyshev bandpass filter
