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Zero steering in the directional pattern of a linear array in the presence of mutual coupling

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4 Author(s)
Mellors, M. ; Government Communications Headquarters, Cheltenham, UK ; Davies, D.E.N. ; Withers, M.J. ; Davies, D.E.N.

The effects of mutual coupling and other errors on the directional performance of a zero-steering system for a linear array are considered. Some measured directional patterns, obtained from two different experimental systems employing 4-element-dipole arrays, are shown. The first model employs components of moderate accuracy, the second is a much more complex model are also shown. With a total of four dummy elements, the directional minima were between 20 and 50dB below the mainbeam response over a 180° sector in all measured patterns. Simplified systems for steering a restricted number of zeros, and the application of Zero-steering systems to planar arrays are also discussed.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:117 ,  Issue: 1 )