Title :
Helix antenna with parasitic element for axial ratio improvement
Author :
Werker, Stephan ; Wienstroer, Volker ; Kronberger, Rainer
Author_Institution :
High Freq. Lab., Cologne Univ. of Appl. Sci., Koeln, Germany
Abstract :
In this paper we present a classical circularly polarized helix antenna. The axial ratio of this antenna is improved by a new method using a parasitic element. We describe the effectiveness of this element for various shapes and placements. Finally, we demonstrate the results on a six turn helix antenna.
Keywords :
Antenna feeds; Antenna measurements; Frequency; Helical antennas; Impedance matching; Impedance measurement; Polarization; Radiofrequency identification; Reflector antennas; Wire;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
