Foster reactance theorem

Foster reactance theorem

Named for its discoverer Ronald Martin Foster, the Foster reactance theorem states that the poles and zeros of a reactive impedance function determine the frequency characteristics of the impedance. The poles and zeros must alternate.


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  • Ronald Martin Foster — (* 3. Oktober 1896; † 2. Februar 1998 Belmar, Monmouth County, New Jersey [1]) war ein US amerikanischer Ingenieur, der an den Bell Labs an elektronischen Filtern für Telefonleitungen arbeitete. Seine Veröffentlichung im Jahr 1924 A Reactance… …   Deutsch Wikipedia

  • R. M. Foster — was a Bell Labs engineer working on electronic filters for use on telephone lines. He published an important paper, A Reactance Theorem , [Foster, R M, A reactance theorem , Bell Systems Technical Journal , Vol. 3, pp259–267, 1924.] which quickly …   Wikipedia

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