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Controlling the input impedance of a microstrip patch antenna without additional matching elements

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Abstract

Two known methods of controlling the input impedance of a microstrip end-fed patch antenna are investigated and their results are compared. Using a 4 GHz reference antenna, the variations of input impedance and radiation patterns are compared, for (a) changing the feed positions to the non-radiating edge against (b) changing the width of a normal fed patch antenna. An expression for finding the necessary width for the last case is given using the results of the analysis.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Democritus University of Thrace, , 67100, Xanthi, Greece

    M. T. Chryssomallis

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  1. M. T. Chryssomallis
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Correspondence to M. T. Chryssomallis.

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Chryssomallis, M.T. Controlling the input impedance of a microstrip patch antenna without additional matching elements. Electr Eng 86, 213–217 (2004). https://doi.org/10.1007/s00202-003-0202-6

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  • DOI: https://doi.org/10.1007/s00202-003-0202-6

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