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Research Article |

T-Truncated Fractal Slot UWB Antenna for Wide Band Scanning in RF Sensor Network

Author(s): Mamta Rani1, Mohd. Gulman Siddiqui2*

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 14, Issue 2

Publisher : FOREX Publication

Published : 20 June 2026

e-ISSN : 2347-470X

Page(s) : 336-342

DOI: https://doi.org/10.37391/IJEER.140210

Abstract

The emergence of wireless communication networks (WCNs) introduces new opportunities for efficient spectrum utilization through wide scanning of the network. Leveraging Software Defined Radios (SDRs), users can conduct wide spectrum sensing and adjust transmission properties dynamically. The concept of opportunistic use of available spectrum requires adaptable antennas with ultra-wide band scanning capabilities. Dynamic Spectrum Access (DSA) emerges as a promising solution to congestion within densely populated networks. In this study, we introduce an innovative compact antenna specifically crafted for wide spectrum sensing. Circular polarization property enhances the antenna’s ability for orientation-free spectrum scanning, facilitated by corner truncation. The antenna design incorporates novel T-fractal slots and electromagnetic band gap structures on a small FR4 substrate measuring 12x18x1.6 mm2. The aim is to identify unused channel opportunities within radio frequency sensor networks (RFSN) through wideband scanning. The impact of insertion of band gap and fractal slots provide a matching of wide range of impedance bandwidth. With an average gain of 2.5 dBi across its operational frequency range, the antenna meets FCC standards, affirming its suitability for spectrum sensing in RFSN. Experimental findings reveal a wide bandwidth from a range of 0.79 to 12.0 GHz in terms of return loss characteristics relative to the feed port.

Keywords: WSN, fractal, band gap, SDR, DSA.




Mamta Rani,Department of Physical Sciences, Banasthali Vidyapith, Jaipur, India; Email: mamta6105@gmail.com

Mohd. Gulman Siddiqui, Department of Physical Sciences, Banasthali Vidyapith, Jaipur, India; Email: mohdgulmansiddiqui@banasthai.in

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Mamta Rani and Mohd. Gulman Siddiqui(2026), T-Truncated Fractal Slot UWB Antenna for Wide Band Scanning in RF Sensor Network. IJEER 14(2), 336-342. DOI: 10.37391/IJEER.140210.