Year: 2016
Type: article
Abstract: Monopole antennas on the earth usually use ground screen with simple radial wires to improve their radiation performance.The number of radials N is usually considered a constant in the screen.This paper studies the effect of changing N and considering it as a function of distance from the monopole using a simple and yet a fast method.The function N() is optimized for different beam angles of an HF monopole antenna.The theoretical functions are converted to practical functions to be formed using meandered lines.Practicable calculated results are validated by method of moments.Furthermore it is shown that for low angle radiation a constant N() with optimized radius of the ground screen is the best choice.The results can be used for higher frequencies, i.e.VHF and UHF frequency bands as well.
Source: Radioengineering
Authors: M. Fartookzadeh, S. H. Mohseni Armaki, S. M. J. Razavi, J. Rashed-Mohassel
Institutions: Malek Ashtar University of Technology, University of Tehran
Language: English
Topic: Antenna Design and Analysis
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $431
OpenAlex ID: W2338831776