14 February 2011 Full wave analysis of structural resonances in composite right/left-handed leaky wave antenna
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Proceedings Volume 7936, RF and Millimeter-Wave Photonics; 793603 (2011) https://doi.org/10.1117/12.874346
Event: SPIE OPTO, 2011, San Francisco, California, United States
Abstract
Properties of propagating wave in a composite right/left-handed (CRLH) leaky wave antenna rely heavily on the constituent stripe patches. In this paper, we conducted full-wave simulations of structural resonances in a CRLH leaky wave antenna by using finite difference time domain (FDTD) method. Ez field distributions for several lowest-order modes in individual stripe patch were examined, which are named as structural resonances. The Bloch modes in a transmission line were also calculated at high symmetric points in k-space. Study shows that Bloch mode properties are closely related to those in an isolated structure. The mode power densities are well confined below or around the metallic strip patches, which enables tight binding approximation to estimate band properties in the vicinity of Γ point. The calculated dispersion diagram by FDTD tells us many new features, such as accidental degeneracy, a third band arisen from slab mode and the many anti-crossing phenomena. These features are of great importance to analyze the performance of CRLH leaky wave antennae.
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Haifeng Zhou, Haifeng Zhou, Kazuaki Sakoda, Kazuaki Sakoda, } "Full wave analysis of structural resonances in composite right/left-handed leaky wave antenna", Proc. SPIE 7936, RF and Millimeter-Wave Photonics, 793603 (14 February 2011); doi: 10.1117/12.874346; https://doi.org/10.1117/12.874346
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