Open-ended dielectric-filled waveguide antenna for underwater usage

Author

Sporer, Michael ; Weigel, Robert ; Koelpin, Alexander

Author_Institution

Inst. for Electron. Eng., Friedrich-Alexander Univ. of Erlangen-Nuremberg, Erlangen, Germany

fYear

2014

fDate

6-9 Oct. 2014

Firstpage

1683

Lastpage

1686

Abstract

In wireless short-range underwater communication a trend towards higher operating frequencies and bandwidth can be noticed in order to increase channel capacity and throughput. For launching electromagnetic waves typically low-directive wire antennas are employed. In this work a new kind of underwater antenna is presented for the 2.4GHz industrial, scientific and medical (ISM) band, based on a dielectric filled open-ended waveguide. The antenna is designed as impedance matching transformer allowing a connection of conventional 50 Ω coaxial cables. The measured 10 dB bandwidth in fresh water is approx. 550MHz (22 %). Compared to a conventional monopole antenna an increase in receive power of approx. 14 dB can be achieved.

Keywords

UHF antennas; impedance matching; transformers; underwater acoustic communication; waveguide antennas; ISM band; channel capacity; electromagnetic waves; frequency 2.4 GHz; frequency 550 MHz; impedance matching transformer; industrial-scientific-and-medical band; low-directive wire antennas; open-ended dielectric-filled waveguide antenna; throughput; underwater antenna; underwater usage; wireless short-range underwater communication; Antenna measurements; Antennas; Dielectrics; Impedance; Loss measurement; Permittivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2014 44th European

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMC.2014.6986779

Filename

6986779