On the control of radiation directivity of elementary source coupled in electromagnetic crystals

V. Jandieri
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Abstract

A directivity of radiation from a line source coupled to 2D electromagnetic crystals is investigated using a Fabry-Perot resonator model for the coupled radiating structure. It is shown that the directivity is characterized by the transmission windows of the electromagnetic crystals in the frequency and angular spectral domains and the transverse resonance condition in the space surrounded by the electromagnetic crystals. A directivity diagram that relates the transmission and reflection spectra of electromagnetic crystals and the size of the resonator to the radiation patterns attainable by a line source is presented. Several numerical examples validate the usefulness of the diagram for designing unique electromagnetic crystal antennas.
电磁晶体中耦合基源辐射指向性的控制
利用法布里-珀罗谐振腔模型研究了线源与二维电磁晶体耦合辐射的指向性。结果表明,电磁晶体在频率域和角谱域的透射窗口以及电磁晶体周围空间的横向共振条件表征了电磁晶体的指向性。给出了电磁晶体的透射和反射光谱以及谐振器的尺寸与线源可获得的辐射方向图之间的指向性图。数值算例验证了该图对设计独特的电磁晶体天线的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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