Miniaturized Circular-Waveguide Probe Antennas Using Metamaterial Liners

DOI10.1109/TAP.2014.2367551zbMATH Open1371.78239arXiv1405.2851MaRDI QIDQ5366859

Publication date: 9 October 2017

Published in: IEEE Transactions on Antennas and Propagation (Search for Journal in Brave)

Abstract: This work presents the radiation performance of open-ended circular-waveguide probe antennas that have been miniaturized by the introduction of thin metamaterial liners. The liners introduce an HE

_{11}

mode well below the natural cutoff frequency, which provides substantial gain improvements over a similarly sized waveguide probe. A new feeding arrangement employing a shielded-loop source embedded inside the miniaturized waveguide is developed to efficiently excite the HE

_{11}

mode and avoid the excitation of other modes across the frequency reduced band while maintaining the antenna's compactness. A metamaterial-lined circular-waveguide probe antenna operating over 42% below its natural cutoff frequency is designed to provide a radiation efficiency of up to 28.8%. A simple, printed-circuit implementation of the metamaterial liner based on inductively loaded wires is proposed and its dispersion features are discussed.

Full work available at URL: https://arxiv.org/abs/1405.2851

Mathematics Subject Classification ID

Antennas, waveguides in optics and electromagnetic theory (78A50)

This page was built for publication: Miniaturized Circular-Waveguide Probe Antennas Using Metamaterial Liners

Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q5366859)