Design of a modified circular-cut multiband fractal antenna

doi:10.1016/S1005-8885(16)60072-9

JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2016, Vol. 23 ›› Issue (6): 68-75.doi: 10.1016/S1005-8885(16)60072-9

• Wireless • Previous Articles Next Articles

Design of a modified circular-cut multiband fractal antenna

Received:2016-06-16 Revised:2016-09-30 Online:2016-12-31 Published:2016-12-30
Contact: Wei XIN E-mail:512185894@qq.com

Abstract

Abstract: This paper presents a modified circular-cut multiband fractal antenna with good radiation patterns designed for digital cellular system (DCS), personal communication system (PCS), 2.4/5.2/5.8 GHz wireless local area networks (WLAN) and 2.5/3.5/5.5 GHz worldwide interoperability for microwave access (WiMAX) applications simultaneously. Originally, the modified circular monopole antenna is designed to resonate at around 2.1 GHz and 3.6 GHz. After subtracting the circular iterative tree fractal structure, it can produce three other resonances at around 5.6 GHz, 6.47 GHz and 7.89 GHz. Besides, as the number of iterations increases, not only do the new frequency bands appear (it demonstrates the good self-similarity property of the proposed antenna), but also the operating bands shift from high frequency to low frequency (it shows the well space filling property). Furthermore, the proposed antenna owns a compact structure, which can achieve the 5.28 dBi of relative high gain. And the measured results are basically accordant to simulated results, which proves the effectiveness of the proposed antenna.

Key words: multiband, fractal monopole, self-similarity, space filling

CLC Number:

TN82

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Design of a modified circular-cut multiband fractal antenna

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