Title :
Active wideband antenna for underwater tomography (1 GHz)
Author :
Conessa, Christophe ; Joisel, A.
Author_Institution :
Dept. of Electromagn. Res., Centre Nat. de Rech. Sci.
Abstract :
A new active antenna has been designed to measure electromagnetic fields in water. It combines a differential wideband amplifier and a dipole, the characteristics of which have been designed to provide a constant gain on the bandwidth of the antenna. The small size of the dipole reduces the mask effect. The designed antenna is a symmetrical reception antenna for the electromagnetic field measurement in water in the frequency range of 100 MHz to 1 GHz and it introduces few disturbances. A possible application will be the microwave imaging of immersed objects.
Keywords :
UHF antennas; acoustic tomography; active antennas; broadband antennas; dipole antennas; electromagnetic fields; active wideband antenna; differential wideband amplifier; electromagnetic field measurement; electromagnetic fields; frequency 100 MHz to 1 GHz; immersed objects; mask effect; microwave imaging; underwater tomography;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20093275
