A low profile loop antenna for communications using NVIS

Author

Griffiths, D.A. ; Baker, A.R.

Author_Institution

British Aerosp. Dynamics Ltd., Bristol, UK

fYear

1990

fDate

32883

Firstpage

42552

Lastpage

42553

Abstract

Describes the development of an HF loop antenna which can be used to provide two way communications between mobile sites with a range up to 300 km. Traditionally mobile communications at HF are established either using groundwave, launched by 3 m vertical whips or using skywave (NVIS) launched by horizontal dipoles. NVIS propagation is very dependent on the ionisphere which changes in density throughout the time of decade, year and day. This limits the frequency band of interest to between 1.5 MHz and 12 MHz

Keywords

ionospheric electromagnetic wave propagation; loop antennas; mobile antennas; radiowave propagation; 1.5 to 12 MHz; 3 m; 300 km; HF loop antenna; NVIS; frequency band; groundwave; horizontal dipoles; ionisphere; low profile loop antenna; mobile communications; radiowave propagation; skywave; vertical whips;

fLanguage

English

Publisher

iet

Conference_Titel

Flat Plate and Low Profile Mobile Antennas, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

189642

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=279651