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Type: Conference paper
Title: Near-field characteristics of a wideband travelling-wave antenna based on a tapered half-mode substrate-integrated waveguide
Author: Nguyen Trong, N.
Kaufmann, T.
Fumeaux, C.
Citation: Proceedings of the 2014 International Workshop on Antenna Technology: "Small Antenas, Novel EM Structures and Materials, and Applications", 2014, pp.300-303
Publisher: IEEE
Issue Date: 2014
ISBN: 9781479923298
Conference Name: 2014 International Workshop on Antenna Technology: "Small Antenas, Novel EM Structures and Materials, and Applications" (iWAT 2014) (4 Mar 2014 - 6 Mar 2014 : Sydney, NSW, Australia)
Statement of
Nghia Nguyen-Trong, Thomas Kaufmann, and Christophe Fumeaux
Abstract: In this paper the near-field distribution of a travelling-wave antenna based on a Half-Mode Substrate- Integrated Waveguide (HMSIW) is investigated in order to verify the guided-wave characteristics and the radiation mechanism of this antenna type. Open-ended coaxial probes are utilized to capture the electromagnetic power density at different positions along the antenna aperture. The measurement and simulation results show a good correspondence which validates the measurement technique. The presented results show fundamental differences between the tapered HMSIW antenna and the traditional uniform leaky-wave antenna (LWA). Unlike the uniform LWA, the radiation of the tapered antenna mainly happens close to cut-off position, thus small radiating effective length and an omni-directional radiation pattern are obtained.
Keywords: Half-mode substrate-integrated waveguide (HMSIW), near-field distribution, wideband, travelling-wave antenna
Rights: © 2014 IEEE
DOI: 10.1109/IWAT.2014.6958670
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