Near-field characteristics of a wideband travelling-wave antenna based on a tapered Half-Mode Substrate-Integrated Waveguide

Nguyen‐Trong, Nghia; Kaufmann, Thomas

doi:10.1109/iwat.2014.6958670

Cited by 4 publications

(1 citation statement)

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“…More validation on the near-field will be shown in a later section (Section V-A). We also note that the near-field distribution of this type of tapered LWA has been validated through experiment in [31].…”

Section: B Near-field Validationmentioning

confidence: 75%

Transmission-Line Model of Nonuniform Leaky-Wave Antennas

Nguyen‐Trong

Hall

Fumeaux

2016

IEEE Trans. Antennas Propagat.

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Abstract-Non-uniform 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, 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 non-uniform LWAs, which ultimately validate the proposed technique as an improvement over the classical approach.Index Terms-Leaky-wave antenna (LWA), pattern synthesis, transmission line model, non-uniform structure, HalfMode Substrate-Integrated Waveguide (HMSIW), half-width microstrip line.

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Section: B Near-field Validationmentioning

confidence: 75%