On Sommerfeld precursor in a Lorentz medium

• Autorzy: Ciarkowski A.
• Języki publikacji: EN

Abstrakty

EN

A one-dimensional electromagnetic problem of Sommerfeld precursor evolution, resulting from a finite rise-time signal excitation in a dispersive Lorentz medium is considered. The effect of the initial signal rate of growth as well as of the medium dumping on the precursor shape and its magnitude is discussed. The analysis applied is based on an approach employing uniform asymptotic expansions. In addition, new approximate formulas are given for the location of the distant saddle points which affect local frequency and dumping of the precursor. The results obtained are illustrated numerically and compared with the results known from the literature.

Słowa kluczowe

EN

electromagnetic wave; electromagnetic wave propagation; integration; numerical stability; signal processing; Lorentz medium; Sommerfeld precursor; one-dimensional magnetic problem; initial signal rate

PL

fala elektromagnetyczna; propagacja fali elektromagnetycznej; całkowanie; przetwarzanie sygnałów; ośrodek Lorentza; prekursor Sommerfelda

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 2002
• Tom: Vol. 43, no 2
• Strony: 187--203
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Ciarkowski A.

• Institute of Fundamental Technological Research, Polish Academy of Sciences, Świętokrzyska 21, 00-049 Warszawa, Poland,

Bibliografia

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