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A technique of synthesizing the excitation currents of planar arrays or apertures

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2 Author(s)
Narasimhan, M.S. ; Centre for Syst. & Devices, Indian Inst. of Technol., Madras, India ; Preetham Kumar, B.

A technique of synthesizing or reconstructing the excitation currents of a planar array of aperture-type antennas from the known near-field patterns of the radiating source is presented. This technique uses an exact solution to the fields radiated by the aperture antenna without disregarding the source currents. Typical numerical computations have been carried out to validate the analytical technique developed. Sensitivity and stability of the numerical computations performed have been studied. The available iterative bandlimited signal extrapolation technique is used to reconstruct the aperture excitation currents only if the far-field patterns of the radiating source are known. Far-field patterns of aperture antennas measured in the laboratory were also used to reconstruct the aperture electric field distribution in the principal plane

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:38 ,  Issue: 9 )

Date of Publication:

Sep 1990

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