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J. Electromagn. Eng. Sci > Volume 11(3); 2011 > Article
Journal of the Korean Institute of Electromagnetic and Science 2011;11(3):201-206.
DOI: https://doi.org/10.5515/JKIEES.2011.11.3.201   
Miniaturized Broadband ENG ZOR Antenna Using a High Permeability Substrate
Seung-Tae Ko, Jeong-Hae Lee
Department of Electronic and Electrical Engineering, Hongik University
Abstract
This paper presents a miniaturized epsilon negative (ENG) zeroth-order resonance (ZOR) patch antenna with an improved bandwidth. The miniaturization and the broad bandwidth of the ENG ZOR patch antenna are achieved by using a meandered via and a high permeability substrate instead of a straight via and a dielectric substrate. The use of a meandered via allows miniaturization of the ENG ZOR patch antenna without narrowing the bandwidth. The use of a high permeability substrate allows further miniaturization of the ENG ZOR patch antenna and improvement of the bandwidth. A high permeability substrate consisting of a multi-layered substrate is designed to have a small material loss. The antenna (kr=0.32) has a 10 dB fractional bandwidth of ~1 %, which is 1.74 times as broad as that of an antenna with a dielectric substrate.
Key words: Epsilon Negative (ENG), Zeroth-Order Resonance (ZOR), Meandered Via, High Permeability Substrate, Multi-Layered Substrate
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