On the Development of Compact Super-Wideband Fractal Antenna

Abstract

Objective: To design and fabricate a compact fractal antenna with high Bandwidth Ratio (BR) and Bandwidth Dimension Ratio (BDR) for Super-Wideband (SWB) and upcoming wireless communication applications. Methods: High Frequency Structure Simulator (HFSS) is used for all the required simulations regarding antenna prototype design and optimization. The proposed antenna consists of nested square fractal in a circular ring and with a rounded corner notch loaded partial ground, which is designed and fabricated on 1 mm thick FR4 substrate. Findings: The final results evince that proposed antenna has an operating bandwidth of 36.5 GHz (2.37-38.95 GHz), with a reflection coefficient (S 11 ) less than -10 dB. It has a maximum gain of 13.4 dBi, BDR of 3498, and BR of 16.4:1. It has an Electrical dimension of 0.22 × 0.23 λ 2 . The proposed antenna's resonating and radiation characteristics have been validated experimentally. Simulated and experimentally measured results are in good agreement with each other. Novelty: The key benefits of the proposed antenna are small electrical dimensions, large bandwidth, and a high BDR. The proposed antenna is suitable for numerous wireless applications such as WLAN, WiMAX, Wi-Fi, 5G communication in sub-6Ghz band as well as in mm Wave frequency band, and S, C, X, Ku, and Ka bands applications.

On the devolvement of fractal antenna for IoT applications

“…A design of compact circular fractal super wideband antenna is reported in [18]. In [19], a Rhombus Shaped Fractal Antenna with stub loaded defected ground plane is reported for UWB applications.…”