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An array of coupled nonradiative dielectric waveguide radiators

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1 Author(s)
Malherbe, J.A.G. ; Pretoria Univ., South Africa

A novel antenna array that radiates a single mode of multiple coupled nonradiative dielectric (NRD) waveguides, is described. The array is fed by a single NRD waveguide, which is designed to propagate a wave with the same wave number as that of free-space. The individual radiators of the array are spaced at one free-space wavelength, but due to the narrow beamwidth of the individual radiators, grating lobes are effectively suppressed. An eight-element array is described and measurements presented, but the design method can be extended to any number of elements

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Antennas and Propagation, IEEE Transactions on  (Volume:46 ,  Issue: 8 )