Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/99359
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Type: | Journal article |
Title: | Transmission-line model of nonuniform leaky-wave antennas |
Author: | Nguyen-Trong, N. Hall, L. Fumeaux, C. |
Citation: | IEEE Transactions on Antennas and Propagation, 2016; 64(3):883-893 |
Publisher: | IEEE |
Issue Date: | 2016 |
ISSN: | 0018-926X 1558-2221 |
Statement of Responsibility: | Nghia Nguyen-Trong, Leonard Hall, Christophe Fumeaux |
Abstract: | Nonuniform leaky-wave antennas (LWAs) are analyzed and synthesized using a lossy transmission line model. The analysis is based on a general waveguide circuit theory. Compared to the classical approach, the model yields a higher accuracy in the computation of both aperture field distribution and radiation patterns. The proposed analysis is also able to provide scattering parameters of the whole structure in a fraction of a second, which is valuable for antenna optimization. Based on the analysis, a general method for far-field pattern synthesis utilizing global optimization is presented. As an application demonstration, the half-mode substrate-integrated waveguide (HMSIW), or half-width microstrip line, has been selected as basis structure for the LWA designs. Two antennas have been optimized targeting different specifications, i.e., a low-sidelobe level and a wide null in the radiation pattern. Experimental results are provided for these selected examples of nonuniform LWAs, which ultimately validate the proposed technique as an improvement over the classical approach. |
Keywords: | Half-mode substrate-integrated waveguide (HMSIW); half-width microstrip line; leaky-wave antenna (LWA); nonuniform structure; pattern synthesis; transmission-line model |
Rights: | © 2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. |
DOI: | 10.1109/TAP.2016.2517669 |
Grant ID: | http://purl.org/au-research/grants/arc/FT100100585 |
Published version: | http://dx.doi.org/10.1109/tap.2016.2517669 |
Appears in Collections: | Aurora harvest 7 Electrical and Electronic Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_99359.pdf | Accepted manuscript | 2.39 MB | Adobe PDF | View/Open |
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