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Design of planar arrays to obtain efficient footprint patterns with an arbitrary footprint boundary

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3 Author(s)
Ares, F. ; Dept. of Appl. Phys., Santiago de Compostela Univ., Spain ; Elliott, R.S. ; Moreno, E.

An antenna pattern synthesis technique is presented that permits the design of planar antenna arrays with footprint patterns of a specified boundary. This technique is applicable to planar arrays of a wide variety of grid structures and can produce patterns with controlled ripple and sidelobe levels. The approach involves two steps: the first consists in stretching the pure real-continuous aperture (an extension of circular Taylor distributions, developed by Elliott and Stern [1990]) into a distribution with a boundary that is inversely proportional to the flat-top beamwidth; the second is the minimization of a cost function (the square of the difference between the resulting power pattern and the desired one) using the Fletcher-Powell method. A square footprint, produced by a rectangular grid (obtained by sampling this distribution) with the corner elements appropriately removed, is presented as an illustration of the method

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Antennas and Propagation, IEEE Transactions on  (Volume:42 ,  Issue: 11 )