UWB Circular Fractal Antenna with High Gain for Telecommunication Applications

Abstract

The present study proposes a new, highly efficient fractal antenna with ultra-wideband (UWB) characteristics. The proposed patch offers a wide simulated operating band that reaches 8.3 GHz, a simulated gain that varies between 2.47 and 7.73 dB throughout the operating range, and a high simulated efficiency that comes to 98% due to the modifications made to the antenna geometry. The modifications carried out on the antenna are composed of several stages, a circular ring extracted from a circular antenna in which four rings are integrated and, in each ring, four other rings are integrated with a reduction factor of 3/8. To further improve the adaptation of the antenna, a modification of the shape of the ground plane is carried out. In order to test the simulation results, the prototype of the suggested patch was built and tested. The measurement results validate the suggested dual ultra-wideband antenna design approach, which demonstrates good compliance with the simulation. From the measured results, the suggested antenna with a compact volume of 40 × 24.5 × 1.6 mm3 asserts ultra-wideband operation with a measured impedance bandwidth of 7.33 GHz. A high measured efficiency of 92% and a measured gain of 6.52 dB is also achieved. The suggested UWB can effectively cover several wireless applications such as WLAN, WiMAX, and C and X bands.

A Hybrid Koch Embedded Sierpinski Fractal Antenna for Uwb & 5g Applications

“…In the proposed work, an electric field is channeled into the printed monopole through the utilization of a CPW, and a lumped port is utilized to enable the transfer of electromagnetic fields between the radiator and the ground [12]. Thus, the proposed design employs FR-4 circuit board substrate as the dielectric material, which possesses distinctive characteristics, including a dielectric constant (Ɛr) of 4.4 and a loss tangent (𝛿) of 0.02 [13].…”

An ultrawideband Koch fractal patch antenna

“…The reported peak gain is 3.6 dBi and average efficiency of the proposed antenna is about 88%. Recently, a UWB fractal monopole patch antenna has been proposed having a high measured radiation efficiency of about 92% in the operating band (Nejdi et al , 2023). By using a partial ground plane and fractal ring resonator, UWB operation is achieved in the frequency range from 2.83 to 10.16 GHz.…”