摘要
由于井下无线短传系统中传输的信号十分微弱,并且传输通道中存在较强的噪声和干扰,为了使接收器能够正确检测信号,设计了基于MAX275的八阶Chebyshev型带通滤波器,并对滤波器进行了无线短传试验中的仿真应用。试验结果表明,该滤波器有效地抑制了传输过程中的干扰和噪声,达到了预期的效果。
The signal in the system of the downhole wireless short-distance transmission is very weak, and there is strong noise and interference in the transmission channel. In order to detect signal correctly, we design the eight-order Chebyshev band-pass filter based on MAX275.The filter was simulated and applied to wireless short-distance transmission system. The test results show that the filter restrains interferences and noises during signal transmission effectively, and achieves the desired results.
出处
《石油仪器》
2008年第1期8-11,101,共4页
Petroleum Instruments
关键词
电磁波
信息传输
幅频特性
Chebyshev带通滤波器
electromagnetic wave
information transmission
amplitude-frequency property
Chebyshev band-pass filter
