中国邮电高校学报(英文) ›› 2016, Vol. 23 ›› Issue (6): 68-75.doi: 10.1016/S1005-8885(16)60072-9

• Wireless • 上一篇    下一篇

Design of a modified circular-cut multiband fractal antenna

胡章芳1,辛伟1,罗元2,胡银平1,周永鑫1   

  1. 1. 重庆邮电大学
    2. 重庆邮电大学光电工程学院
  • 收稿日期:2016-06-16 修回日期:2016-09-30 出版日期:2016-12-31 发布日期:2016-12-30
  • 通讯作者: 辛伟 E-mail:512185894@qq.com
  • 基金资助:
    重庆市科学技术委员会项目资助基金;重庆市“121”科技支撑示范工程项目:重庆光电产业科技支撑示范工程协同管理创新与应用研究

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

摘要: 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.

关键词: multiband, fractal monopole, self-similarity, space filling

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

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