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Beam-shape correction in deployable phased arrays

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4 Author(s)
Yonezawa, R. ; Inf. Technol. Res. & Dev. Center, Mitsubishi Electr. Corp., Kanagawa, Japan ; Konishi, Y. ; Chiba, I. ; Katagi, T.

Deployable phased-array antennas-antennas that are receiving great attention-have a major problem in that they possess the possibility of an incomplete deployment and antenna shape distortion. These effects cause a displacement of the element antenna positions that results in deviation of the phase distribution on the antenna aperture, eventually causing antenna beam deflection. We have investigated how to correct this beam deflection by observing the phased-array antenna from certain directions. There are cases when more than one observation point is necessary to carry out the proposed method depending on the extent of the antenna shape distortion and the number of the points is consulted. This correction method makes it possible to correct the deflection of the main beam and also to determine the displacement of relative element positions

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:47 ,  Issue: 3 )