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Rapid dimension scaling for notch frequency redesign of UWB band-notch antennas

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  • Slawomir Koziel
  • Adrian Bekasiewicz

Abstract

One of important issues in the design of ultra-wideband (UWB) antennas is implementation of band-notch capability, critical to avoid interference with other standards such as WLAN. At the same time, appropriate dimension adjustment of antenna geometry parameters for precise frequency allocation of the notch and to ensure sufficient reflection level in the UWB band is quite challenging. For the sake of reliability it has to be based on full-wave electromagnetic (EM) simulations of the structure at hand. In this letter a simple technique for dimension scaling of UWB antennas is proposed that allows for rapid reallocation of the band-notch to a required frequency. Our methodology exploits a fast inverse model established using several reference designs obtained for coarse-discretization EM model of the antenna of interest as well as appropriate correction techniques that allows us to apply the model for antenna scaling at high-fidelity EM simulation level. The proposed procedure is demonstrated using a compact UWB monopole with the band-notch scaling range from 5 to 8 GHz. Simulation results are validated using physical measurements of the fabricated antenna prototypes.

Suggested Citation

  • Slawomir Koziel & Adrian Bekasiewicz, 2016. "Rapid dimension scaling for notch frequency redesign of UWB band-notch antennas," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 30(17), pages 2280-2292, November.
    • Handle: RePEc:taf:tewaxx:v:30:y:2016:i:17:p:2280-2292
    DOI: 10.1080/09205071.2016.1246208
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