Tunable Band-Notched UWB Antenna from WLAN to WiMAX with Open Loop Resonators using Lumped Capacitors

Authors

  • Wael A. E. Ali Department of Electronics & Communications Engineering, College of Engineering and Technology Arab Academy for Science, Technology and Maritime Transport (AASTMT), Alexandria, Egypt
  • Ahmed A. Ibrahim Department of Electrical Engineering Faculty of Engineering, Minia University, Minia, Egypt

Keywords:

Lumped capacitors, notched characteristic, open loop resonator, UWB monopole antenna

Abstract

The proposed antenna in this paper is compact UWB monopole antenna with a rectangular patch consists of stepped cuts and triangular slot. A two open loop resonators are designed and added near microstrip feed line to achieve sufficient band rejection from 5.1 GHz to 6.5 GHz for avoiding interference with WLAN frequency bands. The proposed antenna has low profile and compact size, its size equals 3.2 x 3.2 cm2. It has bandwidth from 3.1 GHz to 19.3 GHz with voltage standing wave ratio (VSWR) < 2, except the undesired band of 5.1–6.5 GHz. Two-lumped capacitors are inserted in order to investigate the ability of tuning the resonance frequency of the band-notched structures from 5.6 GHz to 3.5 GHz. Finally, the layout of the proposed UWB monopole antenna with the notched band is experimentally fabricated and measured to verify the simulation results. Furthermore, the return loss and far-field measurements of the fabricated antenna exhibit good match with simulation predictions.

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References

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Published

2021-07-25

How to Cite

[1]
Wael A. E. Ali and Ahmed A. Ibrahim, “Tunable Band-Notched UWB Antenna from WLAN to WiMAX with Open Loop Resonators using Lumped Capacitors”, ACES Journal, vol. 33, no. 06, pp. 603–609, Jul. 2021.

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