Floating Hemispherical Helical Antenna: Analysis of Gain, Efficiency and Resonant Frequency

Loading...
Thumbnail Image
Date
2018-12
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Altmetrics
Abstract
This paper reports the effect of seawater conductivity on gain, efficiency and resonant frequency of a hemispherical helical antenna. The size of the copper ground plane for the hemispherical antenna can be reduced using conductive seawater as part of the ground plane for the antenna. Seawater increases the gain from 6 dBi to 8 dBi but with a decreased efficiency. The simulated radiation efficiency of the antenna on water surface is 61%. Specific Absorption Rate (SAR) results show absorption of 2.19 W/kg. This paper also reports the design of a low cost floating buoy. The buoy provides a waterproof setup for the circuitry and antenna. The buoy can be effectively used for shallow water coastal monitoring.
Description
Citation
Radioengineering. 2018 vol. 27, č. 4, s. 1006-1011. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2018/18_04_1006_1011.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en
Study field
Comittee
Date of acceptance
Defence
Result of defence
Document licence
Creative Commons Attribution 4.0 International license
http://creativecommons.org/licenses/by/4.0/
Collections
Citace PRO