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A Compact Printed Monopole Antenna for WiMAX/WLAN and UWB Applications

Author

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  • Zubin Chen

    (Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China
    Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China)

  • Baijun Lu

    (Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China
    Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China)

  • Yanzhou Zhu

    (Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China
    Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China)

  • Hao Lv

    (Institute of Instrument Science and Electrical Engineering, Jilin University, Changchun 130026, China
    Earth Information Detection Instrument Key Laboratory of Ministry of Education, Jilin University, Changchun 130026, China)

Abstract

In this paper, a printed monopole antenna design for WiMAX/WLAN applications in cable-free self-positioning seismograph nodes is proposed. Great improvements were achieved in miniaturizing the antenna and in widening the narrow bandwidth of the high-frequency band. The antenna was fed by a microstrip gradient line and consisted of a triangle, an inverted-F shape, and an M-shaped structure, which was rotated 90° counterclockwise to form a surface-radiating patch. This structure effectively widened the operating bandwidth of the antenna. Excitation led to the generation of two impedance bands of 2.39–2.49 and 4.26–7.99 GHz for a voltage standing wave ratio of less than 2. The two impedance bandwidths were 100 MHz, i.e., 4.08% relative to the center frequency of 2.45 GHz, and 3730 MHz, i.e., 64.31% relative to the center frequency of 5.80 GHz, covering the WiMAX high-frequency band (5.25–5.85 GHz) and the WLAN band (2.4/5.2/5.8). This article describes the design details of the antenna and presents the results of both simulations and experiments that show good agreement. The proposed antenna meets the field-work requirements of cable-less seismograph nodes.

Suggested Citation

  • Zubin Chen & Baijun Lu & Yanzhou Zhu & Hao Lv, 2018. "A Compact Printed Monopole Antenna for WiMAX/WLAN and UWB Applications," Future Internet, MDPI, vol. 10(12), pages 1-14, December.
    • Handle: RePEc:gam:jftint:v:10:y:2018:i:12:p:122-:d:190186
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