Summary
International Symposium on Antennas and Propagation
2012
Session Number:4E1
Session:
Number:4E1-3
A Compact Metamaterial UWB Power-divider Fed Wide-band Array Antenna
Sungtek Kahng,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
In this paper, a new method is suggested to reduce the size of a wide-band array antenna. Its feeding structure is made compact with the help of a novel Metamaterial UWB power divider. The power divider has the Zeroth Order Resonant(ZOR) UWB bandpass filters that are as small as approximately one eighth of the guided wavelength, and placed along the paths to array elements. This power divider is clearly different from others in that the proposed design uses simple microstrip structured Composite Right and Left-Handed (CRLH) filters, while others use two dielectric layers coupled through an oval shaped slot or long tapered transmission lines. In order to validate the proposed design method, the circuit and full-wave simulated results of the power divider with the Metamaterial UWB filters are compared to each other, and the Metamaterial properties of the structure are shown with the electric field at the ZOR and dispersion diagram. Furthermore, the antenna performance of the fabricated antenna with the power divider is measured and compared with the prediction. Also, the size reduction effect by the proposed scheme is addressed.