A Planar Semi-Circled Horn-Like Bow-Tie Antenna Array for Amateur Radio Applications

Abstract This article presents the construction and examination of a Bow-Tie antenna array on a FR4 substrate. The proposed antenna geometry was chosen as a hybrid structure known as a semi-circled horn-like bow-tie antenna, and an array of four antennas in a single row was built. The semicircle diameter and the feedline length of a single antenna are 41.66mm and 21.44mm respectively. CST Microwave Studio was used for design and simulation. The proposed antenna array was printed on a 1.6mm thick substrate with a length of 325.00mm, a width of 56.00mm and a dielectric constant (ℇr) of 4.4. According to the experimental results, the proposed antenna has a return loss of-20.12dB at S11, a VSWR of 1.2 at S11 and Maximum Gain of about 2.94dB. The antenna array was tested in the 2.4GHz to 2.5GHz frequency range. The proposed semi-circled bow-tie antenna array was compared to the rectangular bow-tie antenna array, and it was observed that the proposed antenna array has outperformed the rectangular bow-tie antenna array at 2.45GHz. As a result, the proposed antenna array is a suitable candidate for Mobile and Amateur Radio Applications.