Title :
Why Does Reflector Enhance the Gain of Helical Antennas?
Author :
Djordjevic, Antonije R. ; Ilic, Milan M. ; Zajic, Alenka G. ; Olcan, Dragan I. ; Nikolic, Milos M.
Author_Institution :
Sch. of Electr. Eng., Univ. of Belgrade, Belgrade
Abstract :
We investigate uniformly-wound helical antennas above ground conductors of various shapes, with aim to determine factors that improve the antenna radiation pattern and gain. We show that the characteristics of helical antennas with large spillover fields can be improved using ground conductors (reflectors). This is achieved by intercepting unwanted radiation and redirecting it favorably.
Keywords :
antenna radiation patterns; helical antennas; reflector antennas; antenna radiation pattern; ground conductors; helical antenna gain; reflector; uniformly-wound helical antennas; unwanted radiation; Antenna radiation patterns; Helical antennas;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6
