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| A Novel Ultra-wideband Fractal Tree-shape Antenna |
| Zhao Xiao-ying Zang Hong-ming Zhang Gong-lei Lu Jing-jing |
| (School of Electronic & Information Engineering, Beihang University, Beijing 100191, China) |
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Abstract An ultra-wideband fractal antenna is proposed, which has an isosceles trapezoid ground-plane. Increasing fractal iterations and optimizing ground-plane shape can achieve a better impedance matching so as to realize Ultra-WideBand (UWB) antenna performance. The presented fractal antenna offers a -10 dB return loss bandwidth in the range of 4.2 to 17.5 GHz (relative band is 122.6%) with electrical dimension of 0.35λ×0.35λ. Thus, this type of antenna is suitable for C, X, Ku and UWB band communications, which may have a wide application prospect. The measured results fit well with the simulation results, and the effectiveness is validated using the measured results.
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Received: 20 June 2014
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Corresponding Authors:
Zang Hong-ming
E-mail: zanghongming410@126.com
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2015, Vol. 37 
