Title :
Spiral antenna with parasitic radiating elements
Author :
Callec, V. ; Fourn, Erwan ; Gillard, Raphael ; Diez, H.
Author_Institution :
IETR, Eur. Univ. of Brittany, Rennes, France
Abstract :
This paper presents the integration of radiating elements over a two-arm Archimedean spiral antenna. The radiation bandwidth of a spiral antenna printed over a ground plane can be improved by these elements. In this way, a 1:10 bandwidth can be achieved with good performance. As an example, this paper presents a spiral antenna working from 1 to 10 GHz with a constant gain thanks to two concentric rings placed 15 mm above the antenna.
Keywords :
UHF antennas; microwave antennas; spiral antennas; concentric rings; constant gain; frequency 1 GHz to 10 GHz; parasitic radiating elements; radiation bandwidth; two-arm Archimedean spiral antenna; Antenna radiation patterns; Bandwidth; Gain; Resonant frequency; Spirals; Structural rings; Archimedean spiral antenna; ultra-wideband antenna;
Conference_Titel :
Radar Conference (EuRAD), 2013 European
Conference_Location :
Nuremberg
