Author - Tom H. Roberts

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Tom H. Roberts	Write for Microwaves & RF

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May 2009 [Components]
Build LPFs With Dot-Terminations
Lowpass filters with maximally flat group delay are ideal for digital signal transmission systems, since they allow pulsed signals to rise and fall smoothly and settle rapidly to final values without distortion. Filters such as the Bessel-Thomson lowpass filter have been used in these applications, although the configuration is reflective at stopband frequencies and can cause signal distortion with impedance mismatches. A better solution is...