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Contribution to the cavity model for analysis of microstrip patch antennas

D. D. SANDU1,* , O. G. AVADANEI1, A. IOACHIM2, D. IONESI3

Affiliation

  1. Faculty of Physics, University “Al. I. Cuza” of Iai, Romania
  2. National Inst. of Material Physics, P. O. Box MG 7, Bucharest, Romania
  3. FERA Bac u, Romania

Abstract

In this communication we propose a further improvement of the cavity model for microstrip antennas, given by Richards et al. [1]. The main attention is paid to the calculation of the radiated fields Eθ, Eϕ and to the variation of the input impedance as a function of the frequency and the feed point. In our model we have suppose that the magnetic walls are not perfect and the patch acts as a cavity with the length corresponding to its resonance frequency. The validity of the proposed model was proved by comparison of theoretical computations and experimental results..

Keywords

Microwaves, Microstrip, Patch antennas, Impedance, Radiation pattern.

Submitted at: Sept. 13, 2005
Accepted at: Jan. 26, 2006

Citation

D. D. SANDU, O. G. AVADANEI, A. IOACHIM, D. IONESI, Contribution to the cavity model for analysis of microstrip patch antennas, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 1, pp. 339-344 (2006)