Vivaldi Antenna Performance Enhancement for IoT Applications Using Optimal Bandwidth

Amina Hashim Issa; Mohsen Nickray

doi:10.51173/jt.v7i4.2653

Authors

Amina Hashim Issa Department of Information Technology Engineering, Faculty of Engineering, University of Qom, Qom, Islamic Republic of Iran
Mohsen Nickray Department of Information Technology Engineering, Faculty of Engineering, University of Qom, Qom, Islamic Republic of Iran

DOI:

https://doi.org/10.51173/jt.v7i4.2653

Keywords:

Microstrip Vivaldi Antenna, FR4, IOT, Dual Band

Abstract

The dual-band microstrip is designed to be compatible with Internet of Things (IoT) applications, Bluetooth, and Wi-Fi standards, ensuring reliable communication for short- and medium-range IoT devices. Utilizing an FR4 substrate, the antenna achieves excellent return loss, satisfactory gain, and near-omnidirectional radiation patterns, making it ideal for compact IoT devices. This paper presents a dual-band Vivaldi antenna for IoT applications operating at 2.4 GHz and 5.8 GHz. Designed and optimized using ADS software, the antenna achieves a compact layout on FR4 with enhanced return loss and radiation performance. The proposed design achieves a return loss of –32 dB at 2.4 GHz and –17.6 dB at 5.8 GHz, with bandwidths of 660 MHz and 640 MHz, respectively. Radiation efficiencies reached 80% and 78%. These results confirm the antenna’s suitability for short- and mid-range wireless protocols such as Wi-Fi and Bluetooth. Future work may explore integration with RF energy harvesting and real-world multipath testing.

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Author Biographies

Amina Hashim Issa , Department of Information Technology Engineering, Faculty of Engineering, University of Qom, Qom, Islamic Republic of Iran

Mohsen Nickray, Department of Information Technology Engineering, Faculty of Engineering, University of Qom, Qom, Islamic Republic of Iran

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