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Composite metamaterial enabled excellent performance of microstrip antenna array 被引量:2
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作者 唐明春 肖绍球 +3 位作者 官剑 柏艳英 高山山 王秉中 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第7期322-326,共5页
This paper reports that the split ring resonators and complementary split ring resonators are compounded to construct a novel compact composite metamaterial. The composite metamaterial exhibits a unique property of bl... This paper reports that the split ring resonators and complementary split ring resonators are compounded to construct a novel compact composite metamaterial. The composite metamaterial exhibits a unique property of blocking electromagnetic wave propagating in two directions near the resonant frequency. An example of two-element microstrip antenna array demonstrates that the developed metamaterial enables array performance that is an improvement in comparison with the traditional one, including mutual coupling suppression of 9.07 dB, remarkable side lobe suppression and gain improvement of 2.14 dB. The mechanism of performance enhancement is analysed based on the electric field and Poynting vector distributions in array. The present work not only is a meaningful exploration of new type composite metamaterial design, but also opens up possibilities for extensive metamaterial applications to antenna engineer. 展开更多
关键词 compact composite metamaterial mutual coupling reduction in microstrip array gain improvement
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Improved all-optical OR logic gate based on combined Brillouin gain and loss in an optical fiber 被引量:1
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作者 Daisy Williams Xiaoyi Bao Liang Chen 《Chinese Optics Letters》 SCIE EI CAS CSCD 2014年第8期68-71,共4页
Improved all-optical OR gates are proposed, using a novel fiber nonlinearity-based technique, based on the principles of combined Brillouin gain and loss in a polarization-maintaining fiber (PMF). Switching contrast... Improved all-optical OR gates are proposed, using a novel fiber nonlinearity-based technique, based on the principles of combined Brillouin gain and loss in a polarization-maintaining fiber (PMF). Switching contrasts are simulated to be between 82.4%-83.6%, for two respective configurations, and switching time is comparable to the phonon relaxation time in stimulated Brillouin scattering (SBS). 展开更多
关键词 NAND ASW Improved all-optical OR logic gate based on combined Brillouin gain and loss in an optical fiber
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