Title :
Wideband reflector for Archimedean spiral antenna
Author :
Djoma, Christopher ; Begaud, Xavier ; Lepage, Anne Claire ; Mallégol, Stéphane ; Jousset, Michel
Abstract :
This paper presents the benefits of a Perfect Electric Conductor (PEC) used as a reflector for an Archimedean spiral antenna. Such a configuration can improve the broadside gain of 3dB over a theoretical relative bandwidth of 133%, with a thickness of only λ/12 at the lowest operating frequency. A prototype of an Archimedean two-wire spiral antenna has been built to operate from 1GHz to 10GHz and placed 10 mm above a conducting plane reflector. Measurements results gave a relative bandwidth of 110%, in which the broadside RHCP gain is improved.
Keywords :
UHF antennas; microwave antennas; reflector antennas; spiral antennas; Archimedean spiral antenna; frequency 1 GHz to 10 GHz; perfect electric conductor; two wire spiral antenna; wideband reflector antenna; Antenna measurements; Bandwidth; Broadband antennas; Reflector antennas; Spirals; Archimedean spiral antenna; perfect electric conductor; wideband reflector;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6206145
