This paper presents the design and simulation of a compact Coplanar Waveguide (CPW)-fed reconfigurable Ultra-Wideband (UWB) antenna for modern wireless communication applications. The proposed antenna employs switch-controlled band-notch structures to achieve frequency reconfigurability and mitigate interference from WLAN and WiMAX bands. The antenna is designed and analyzed using MATLAB Antenna Toolbox, and its performance is evaluated through impedance characteristics, S-parameters, VSWR, gain, directivity, and radiation patterns. Simulation results demonstrate significant improvements after reconfiguration, with return loss enhanced from −15 dB to −42 dB, directivity increased from 2.1 dBi to 5.12 dBi, and operating bandwidth expanded to the UWB range of 3.1–10.6 GHz. The compact design exhibits stable radiation characteristics, improved impedance matching, and enhanced efficiency, making it suitable for 5G/6G communications, RADAR, satellite systems, and UWB networks.

This paper presented the design and simulation of a compact CPW-fed reconfigurable UWB antenna for advanced wireless communication applications. The antenna was designed and analysed using MATLAB Antenna Toolbox with a comprehensive simulation of S11, VSWR, impedance, gain, directivity, and radiation patterns. The proposed antenna demonstrates significant improvements after reconfiguration: S11 improved from −15 dB to −42 dB, directivity increased from 2.1 dBi to 5.12 dBi, and bandwidth expanded from narrow to ultra-wideband (3.1–10.6 GHz). The frequency reconfiguration enabled the antenna to operate efficiently under different communication conditions by selectively suppressing WLAN and WiMAX interference. The proposed design is well-suited for advanced applications, including 5G/6G communication, RADAR, satellite systems, and UWB networks, contributing to SDG 9 (Industry, Innovation and Infrastructure) and SDG 11 (Sustainable Cities and Communities).

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© 2025 International Journal of Engineering and Techniques (IJET).

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