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All Journal International Journal of Information System and Innovative Technology
Poripireddy, Divya Gayathri
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Computer Science & IT

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Reconfigurable Dual Band Antenna using Varactor Diode Mohammed Ahmedalsayaghi, Ali; Sabapathy, Thennarasan; Nasrun Osman, Mohamed; Rooban Gunasekaran, Shanmuka; Kumari Gollu, Sri Man; Poripireddy, Divya Gayathri
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/1epsgh59

Abstract

This paper presents a dual-band frequency reconfigurable microstrip antenna integrated with an Electromagnetic Band Gap (EBG) structure for modern wireless communication applications. The proposed antenna operates at two key frequency bands of 1.8 GHz and 2.4 GHz and is fabricated on a Rogers 4003C substrate to achieve low dielectric loss and stable radiation performance. Frequency reconfigurability is achieved by embedding varactor diodes across strategically etched slots on the radiating patch, allowing continuous tuning through DC bias voltage control without altering the physical structure of the antenna. The EBG structure is employed to suppress surface wave propagation and enhance antenna gain and radiation stability. Simulation and experimental results demonstrate effective frequency tuning from 1.68–1.88 GHz and 2.38–2.81 GHz with stable impedance matching and directional radiation patterns. The proposed antenna is suitable for compact and reconfigurable wireless systems such as IoT and 5G applications.
Co-Authors Kumari Gollu, Sri Man Mohammed Ahmedalsayaghi, Ali Nasrun Osman, Mohamed Rooban Gunasekaran, Shanmuka Sabapathy, Thennarasan