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Design of a fractal triple-band reconfigurable filtering antenna for multiband applications

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  • Sangeeta Das
  • Pankaj Sarkar

Abstract

This letter constitutes a novel triple-band reconfigurable filtering antenna used for Bluetooth, WiMAX and WLAN applications. First, a compact triple-band reconfigurable filter is instigated which is composed of two pairs of Stepped Impedance Resonators (SIRs) and a pair of Uniform Impedance Resonators (UIRs). The SIRs are entrenched at the upper and lower half of feed lines operating at 2.4 and 5.4 GHz, respectively. A pair of UIRs operating at 3.5 GHz is folded and enclosed near the upper SIR. A shunt stub is tapped at the source-load feeding lines to upgrade the selectivity of the filter. The proposed filter uses four PIN diodes to initiate different reconfigurable multiband operations. A fractal antenna is implemented with a modified binary tree topology. The ground plane of the proposed antenna is reformed with a stub. The improved antenna structure enables three radiating bands with enhanced performance. Later, the designed filter is integrated into the antenna to implement the intended triple-band reconfigurable filtering antenna.

Suggested Citation

  • Sangeeta Das & Pankaj Sarkar, 2024. "Design of a fractal triple-band reconfigurable filtering antenna for multiband applications," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 38(5), pages 557-570, March.
    • Handle: RePEc:taf:tewaxx:v:38:y:2024:i:5:p:557-570
    DOI: 10.1080/09205071.2024.2321277
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