โ Scribed by Louis Weinberg
No coin nor oath required. For personal study only.
In a preceding paper tables were presented for the design of three large classes of ladder networks.
These networks had characteristics given by Butterworth, Tschebyscheff, and Bessel polynomials.
In the present paper a number of additional tables are presented, the tables now being classified on the basis of the parameter r, which is the input-to-output resistance or conductance ratio.
The tables give the element values of normalized low-pass ladders with one of the following characteristics : maximally flat magnitude (Butterworth), equal-ripple magnitude (Tschebyscheff), and maximally flat time delay (Bessel polynomial).
By means of frequency transformations the networks given by the tabulated element values for the Butterworth and Tschebyscheff networks may be converted to give high-pass, band-pass, and band-elimination filters.
Thus the tables may be used as a handbook for the design of these optimum networks. * This paper is based on the author's report with the same title, Technical Memorandum
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