| Autor: |
Abdulwali ZSA; Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Alqahtani AH; Department of Applied Electrical Engineering, Al-Muzahimya Campus, College of Applied Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Aladadi YT; Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Alkanhal MAS; Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Al-Moliki YM; Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Aljaloud K; Department of Applied Electrical Engineering, Al-Muzahimya Campus, College of Applied Engineering, King Saud University, Riyadh 11421, Saudi Arabia., Alresheedi MT; Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia. |
| Abstrakt: |
This paper presents a miniaturized broadband Bi-Yagi antenna array that covers a bandwidth from 1.79 GHz to 2.56 GHz. The proposed antenna achieves a tradeoff between maximizing bandwidth, effective area, and gain while minimizing physical dimensions. The antenna design considers the coupling between the radiator and director elements, resulting in increased bandwidth as the resonating modes shift apart. Additionally, the proposed design optimizes element spacing and dimensions to achieve high gain, wide bandwidth, efficient radiation, and a minimum aperture size. The proposed antenna, with physical dimensions of 138.6 mm × 47.7 mm × 1.57 mm, demonstrates gains ranging from 6.2 dBi to 9.34 dBi across the frequency range, with a total efficiency between 88% and 98%. The proposed design is experimentally validated by measuring the reflection coefficients, input impedance, gain, and normalized radiation pattern. These features make the antenna well suited for capturing and harvesting electromagnetic waves in mobile wireless and Wi-Fi applications. |
