Open AccessCalculation of the efficiency of electrically small MF antenna for mine communications
Author(s) -
A. V. Kolesnikov,
D.V. Fedosov,
А. В. Николаев
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1862/1/012001
Subject(s) - antenna (radio) , equivalent circuit , inductance , standing wave ratio , electrical engineering , electronic circuit , capacitance , impedance matching , antenna tuner , electronic engineering , computer science , electrical impedance , antenna factor , acoustics , antenna measurement , voltage , engineering , physics , microstrip antenna , electrode , quantum mechanics
Today, the developers of electrically small antenna equipment are faced with the problem of reliable modeling of electrically small antennas. The existing methods of computer modeling of electrically small antennas, as experience has shown, are resource-intensive. One of the ways to solve this problem is to use the method of replacing the antenna with an equivalent electrical circuit. This method is based on the assumption that any part of the antenna can be replaced by equivalent values of inductance, capacitance or active resistance, which can be investigated together with the elements of the tuning and matching circuit. The resulting equivalent electrical circuit can be analyzed by the methods of the theory of electrical circuits, and most of the antenna characteristics of interest to the developer can be determined. These include efficiency, quality factor, frequency dependences of impedance and voltage standing wave ratio (VSWR). In this work, a sample of an electrically small resonant medium frequency (MF) antenna and its equivalent circuit are presented, and its characteristics are analyzed using the theory of electrical circuits. The graphs of the dependence of the efficiency on the frequency at the resonant tuning of the antenna are plotted.