A Low Frequency Helical Antenna for Sub Surface Communication
Keywords: Helical Antenna, Dissipative Media
AbstractThe purpose of this paper is to develop a simple antenna structure of limited dimension suitable for low frequency and under ground communication. The closed wound helical antenna of length small compared to wavelength is found to be a better radiator compared to a linear antenna of same length. Field expressions for both dissipative and non dissipative media are calculated and tabulated. A chart is provided to study the reflection effect and a curve is plotted showing the relative strength of helical antenna with respect to the linear antenna. The assumption of uniform earth's characteristic is made through out the analysis.
How to Cite
Chatterjee, B., & Bhattacharya, D. (2014). A Low Frequency Helical Antenna for Sub Surface Communication. Defence Science Journal, 17(3), 125-134. https://doi.org/10.14429/dsj.17.7382
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