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A CPW-Fed Self-Affine Cross Shape Fractal Antenna  

Kim Tae-Hwan (School of Electronics, Telecommunication and Computer Eng., Hankuk Aviation University)
Lee Jae-Wook (School of Electronics, Telecommunication and Computer Eng., Hankuk Aviation University)
Cho Choon-Sik (School of Electronics, Telecommunication and Computer Eng., Hankuk Aviation University)
Lee Yun-Hyun (School of Electronics, Telecommunication and Computer Eng., Hankuk Aviation University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.9, 2005 , pp. 949-956 More about this Journal
Abstract
In this paper, a new CPW-fed cross shape fractal antenna having a self-affinity is presented. This novel configuration, which has anisotropic scaling symmetry, makes smaller profile characteristic compared to the fractal antenna using a self-similarity. Increase of the iteration coefficient, which leads to decrease of the fundamental resonant frequency, shows a good impedance matching condition and multi-band characteristics due to new surface current paths. The radiation patterns are similar to those of monopole antennas. In the K3 stage of iteration, the proposed antenna shows a measured maximum gain 2.27 dBi at 940 MHz. A commercially available software based on the FDTD algorithm has been used to obtain the predicted results. In addition, an RT/Duroid 5880 substrate has been employed for the experimental results.
Keywords
Self-Affine; Fractal Antenna; CPW;
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