Abstract：Added a capacitar C4 respectively, two initial twin T netwarks in the antialias filter of DFS-V seismic acquisition system greatly differ from symmetric twin T netwark in transfer characteristic.Their frequency characteristic curves are not,symmetric,This type of twin T network behaves as low-pass filter, it is absolutely different from symmetric twin T band-stap filter.The notching circuit made of this kind of twin T network can increase the attenuation slop outside the pass-band but decrease signal loss within pass-band.
收稿日期: 1985-04-29
引用本文:
王本吉. DFS-V数字地震仪去假频滤波器中双T网络分析[J]. 石油地球物理勘探, 1986, 21(3): 303-309.
Wang Benji. The analysis of twin T network in antialias filter of DFS-V seismic acquisition system. OGP, 1986, 21(3): 303-309.
