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On Complex Delay Time of a Narrow-Band Signal Passing through a Resonant Filter

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Radiophysics and Quantum Electronics Aims and scope

Abstract

It is shown that distortion of a narrow-band signal with a gradually varying envelope during passage through a resonant filter can approximately be described in terms of complex delay time. The real part of the delay time can be both positive and negative, depending on the filter type and the carrier frequency of the signal. The imaginary part of the delay time leads to a distortion of the complex envelope of the signal. The intensity envelope of signals without frequency modulation is distorted only slightly, while distortion is considerable even in the case of a fairly small frequency modulation.

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Authors and Affiliations

  1. Samara State Architecture and Construction University, Samara, Russia

    N. S. Bukhman

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  1. N. S. Bukhman
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 48, No. 8, pp. 711–718, August 2005.

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Bukhman, N.S. On Complex Delay Time of a Narrow-Band Signal Passing through a Resonant Filter. Radiophys Quantum Electron 48, 631–638 (2005). https://doi.org/10.1007/s11141-005-0108-4

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  • DOI: https://doi.org/10.1007/s11141-005-0108-4

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