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http://dx.doi.org/10.5515/KJKIEES.2010.21.8.900

Frequency Tunable and Miniaturized Zeroth-Order Resonant(ZOR) Antenna Design by Metamaterial  

Jang, Young-Soo (School of Electrical and Electronics Engineering, Chung-Ang University)
Choi, Jae-Hyurk (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.21, no.8, 2010 , pp. 900-904 More about this Journal
Abstract
In this paper, a frequency tunable zeroth-order resonant(ZOR) antenna has been implemented. The ZOR characteristics of the proposed antenna is realized by using a composite right-and left-handed(CRLH) transmission line which consists of a rectangular slot on the ground plane of a mushroom structured antenna in order to minimize the antenna size. In addition, the tunable devices are introduced on the slotted ground plane for frequency tuning capability. Depending on the on and off states of the tunable device on the slotted ground plane, a shunt inductance value of the CRLH transmission line is changed and its resonant frequency becomes tunable. From the experimental results, the resonant frequency of the proposed antenna is changed from 4.92 GHz to 2.96 GHz. Additionally, the proposed antenna's size is reduced by 94.24 % compared with the half-wavelength patch antenna.
Keywords
Metamaterial; Tunable Antenna; Reconfigurable Antenna; RF MEMS; Zeroth-Order Resonant(ZOR) Antenna;
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