Design and simulation of a wired antenna with a new structure and compare it with a conventional unipolar antenna of equal length

Subject Areas : Electronics Engineering

Firooz Mohsenifard ¹ , Ebrahim Abiri Jahromi ² , Abbas Fazel Zakeri ³

1 - Islamic Azad University Bushehr Branch
2 - Islamic Azad University Bushehr Branch
3 - Islamic Azad University Bushehr Branch

Received: 2021-05-05 Accepted : 2021-05-05 Published : 2018-10-23

Keywords:

Abstract :

In this paper, a wired antenna with a new structure for the central frequency of 15 MHz is designed and simulated. In addition to being shorter than the wavelength, this antenna has a high radiant resistance and low imaginary resistance compared to a unipolar antenna of equal length. Also, for high efficiency and maximum bandwidth in the frequency range of 10 to 25 MHz, the dimensions of the antenna have been optimized.  S-NEC software is used to design and simulate this antenna, which is one of the specialized software in this field. It is also possible to increase the dimensions of the antenna by a certain ratio, for example 1000, and therefore the operating frequency of the antenna decreases by the same ratio, such antennas that work in the VLF band are used for special purposes.