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Design of narrowband high-frequency LC-filters


I.V. Grigoryeva – Engineer-Constructor, PJSC «ONIIP». E–mail:
A.N. Yakovlev – Ph.D. (Eng.), Head of Department, PJSC «ONIIP». E–mail:

Notwithstanding the fact that theory of such filters design is sufficiently complete in scientific and technical literature, issues of the narrowband LC-filters design that are intended to operate in high-frequency area have not still been solved. This fact causes some difficulties within practical design of band high-frequency LC-filters connected to issues of physical realizability of circuit elements that limit such filters application significantly. In this article there is presented an attempt to solve this problem for quasipolynomial filters at coupled circuits on the basis of the theory of characteristic parameters of four-terminal network and Norton transformation. Analytical ratios for calculation of circuit element values for the narrowband high-frequency LC-filters are developed. The experimental check showed that obtained formulas provide accuracy that is enough.
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June 24, 2020
May 29, 2020

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