Progress In Electromagnetics Research B
ISSN: 1937-6472
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By E. M. A. Eldesouki, K. F. A. Hussein, and A. M. El-Nadi

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Circularly-polarized arrays of cavity backed slot (CBS) antennas are proposed for X-band satellite-earth communications. Two configurations of such circularly polarized arrays are investigated: cross-shaped and square-shaped arrays. Both configurations can produce right-hand circular polarization (RHCP) as well as lefthand circular polarization (LHCP) by proper setting of excitation phase for each element in the array. The finite-difference timedomain (FDTD) method is used to analyze the characteristics of the proposed arrays including the input impedance, S-parameters, radiation pattern, gain and axial ratio. The results show that the proposed array configurations seem very promising and useful for geostationary satellite applications.

E. M. A. Eldesouki, K. F. A. Hussein, and A. M. El-Nadi, "Circularly Polarized Arrays of Cavity Backed Slot Antennas for X-Band Satellite Communications," Progress In Electromagnetics Research B, Vol. 9, 179-198, 2008.

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