New approximation technique for current distribution in microstrip array antennas

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New approximation technique for current distribution in microstrip array antennas

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To reduce the number of unknowns in the moment method solution for microstrip array antennas consisting of complex shaped but identical elements, the current distribution of each element is approximated by the distribution of an isolated single element. The so computed coupling shows excellent agreement with an exact calculation and leads to a tremendous decrease in computation time.

Inspec keywords: current distribution; microstrip antennas; antenna radiation patterns; microwave antenna arrays; antenna theory

Other keywords: moment method solution; microstrip array antennas; approximation technique; current distribution

Subjects: Antenna theory; Antenna arrays

References

    1. 1)
      • Heinstadt, J.: `An efficient calculation procedure for single element and finite linearmicrostrip array antennas', 3rd Int. Symp. on antennas and EM theory, September 1993, Nanjing.
    2. 2)
      • D.M. Pozar . Finite phased arrays of rectangular microstrip patches. IEEE Trans. , 5 , 658 - 665
    3. 3)
      • Wertgen, W.: `Elektrodynamische Analyse Geometrisch Komplexer (M)MIC-Strukturen mit Effizienten Numerischen Strategien', 1989, Dissertation, Universität Gesamthochschule Duisburg.
    4. 4)
      • Heinstadt, J., Forster, H., Kehlenbach, W., Schroth, A.: `Microstrip X-band array antenna with wide sector characteristics', 3rd Int. Symp. on antennas and EM theory, September 1993, Nanjing.
    5. 5)
      • G. Vandenbosch , A. van de Capelle . Use of a combined expansion scheme to analyze microstrip antennas with the method of moments. Radio Science , 6 , 911 - 916
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