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http://dx.doi.org/10.5515/KJKIEES.2012.23.1.021

Flexible Zeroth-Order Resonant(ZOR) Antenna Independent of Curvature Diameter  

Lim, In-Seop (School of Electrical and Electronics Engineering, Chung-Ang University)
Chung, Tony J. (School of Electrical and Electronics Engineering, Chung-Ang University)
Lim, Sung-Joon (School of Electrical and Electronics Engineering, Chung-Ang University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.1, 2012 , pp. 21-28 More about this Journal
Abstract
In this paper, we propose a flexible zeroth-order resonant(ZOR) antenna. Its zero phase constant ensures that the antenna performance is independent of substrate deformation. A composite right/left-handed transmission line is designed based on coplanar waveguide technology to realize the zeroth-order resonance phenomenon. The CRLH is an implementation of metamaterial(left handed material) which is composed of shunt inductance and series capacitance. In order to yield additional circuital parameter, chip inductor and gap capacitor is added, respectively. The proposed ZOR antenna provides good performances: reasonable bandwidth(6.5 %) and peak gain(0.69~1.39 dBi). Simulated and measured results show that the antenna's resonant frequencies and radiation patterns are almost unchanged at different curvature diameters of 30, 50, 70 mm, as well as for a flat surface.
Keywords
Zeroth-Order Resonant(ZOR) Antenna; Flexible Substrate; Co-Planar Waveguide(CPW); Composite Right/Left-Handed(CRLH) Transmission Line;
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