Exact Design Techniques for Microwave Tem Filters.
Rept. no. 2 (Final) 1 Feb-30 Apr 65,
BENDIX RESEARCH LABS SOUTHFIELD MI
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A review is given of the exact theory of interdigital band-pass filters. Tables of self and mutual static capacitors are presented that allow the simplified design of Butterworth and Chebyshev interdigital filters for bandwidths of a few percent to 41 and greater. The design procedures developed make use of simple transformations performed on the static capacitance matrix of a parallel conductor array. Detailed design examples are given to illustrate the methods and techniques presented. A new type of filter-transformer consisting of multiple coaxial lines is described. Experimental results for a 31 bandwidth interdigital filter and a 31 bandwidth filter-transformer are presented. Author