Authors: Nghia Nguyen-Trong, Thomas Kaufmann,Leonard Hall and Christophe Fumeaux
Source: FERMAT, Volume 7, Communications 5, Jan Feb.,2015
Abstract: Parasitic effects from the feed and termination on the far-field of two types of leaky-wave antenna (LWA) based on Half-Mode Substrate-Integrated Waveguide (HMSIW) are thoroughly investigated. It is shown that ripples observed in the radiation patterns originate from discontinuities in the aperture field distribution, which typically appear at the feed and termination. The paper firstly focuses on explaining the ripples on the pattern of a wideband omni-directional antenna based on a tapered HMSIW. In the second part, the ripples in the highly directive pattern of a uniform LWA are analyzed and compared.
Keywords: Investigation, Parasitic Effects, Feed and Termination, Far-Field Pattern, Leaky-Wave Antennas, HMSIW
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Investigation of Parasitic Effects from Feed and Termination on the Far-Field Pattern of Leaky-Wave Antennas Based on HMSIW