Abstract For a composite filter made up of several m‐derived sections, the greatest discrimination will be obtained if the values of the design parameter m for the various parts of the filter are chosen so that successive minima of insertion loss in the attenuation band are all the same. Many different low pass structures were set up and adjusted experimentally to show this type of performance. The necessary values of m and the resulting discrimination for each network have been plotted on curves, which give information also about the sharpness of cut‐off. These curves are useful for the most economical design of low pass, or high pass, composite filters to meet definite requirements.

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low pass or high pass composite filters insertion loss sharpness of composite filter

W. J. Cunningham,.Performance Curves for m‐Derived Filters. 13 (12),768.

W. J. Cunningham,"Performance Curves for m‐Derived Filters" 13

W. J. Cunningham,"Performance Curves for m‐Derived Filters"