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Dispersive delay at gigahertz frequencies using magnetostatic waves

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Abstract

Magnetostatic waves are intrinsically suited for use in microwave dispersive delay lines, because they are readily generated at high frequencies and their velocity is frequency dependent. Here we review progress toward meeting the systems requirement that the delay time be linear in frequency. Magnetostatic waves can approach this condition if a ground plane is nearby or if two or more ferrite layers are present; with forward volume waves one may also use a dispersive reflecting array, as is done with surface acoustic waves. The use of a properly shaped ground plane gives the lowest phase errors so far measured (±16° over 0.6 GHz); multiple ferrite layers show promise of allowing the greatest delay.

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Authors and Affiliations

  1. Westinghouse Research and Development Center, 1310 Beulah Road, 15235, Pittsburgh, Pennsylvania, USA

    M. R. Daniel, J. D. Adam & P. R. Emtage

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  1. M. R. Daniel
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  2. J. D. Adam
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  3. P. R. Emtage
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Daniel, M.R., Adam, J.D. & Emtage, P.R. Dispersive delay at gigahertz frequencies using magnetostatic waves. Circuits Systems and Signal Process 4, 115–135 (1985). https://doi.org/10.1007/BF01600076

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  • DOI: https://doi.org/10.1007/BF01600076

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