Title :
Extremely low-profile helix radiating a circularly polarized wave
Author :
Nakano, Hisamatsu ; Takeda, Haruo ; Honma, T. ; Mimaki, Hiroaki ; Yamauchi, Junji
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
fDate :
6/1/1991 12:00:00 AM
Abstract :
It is shown that the combination of low pitch and a small number of turns realizes a low-profile helix as a radiating element of circular polarization. A two-turn helix of 4° pitch angle shows a bandwidth of 12% for a 3 dB axial-ratio criterion. The numerical results presented lead to new aspects of a low-pitch helix as an effective radiating element
Keywords :
antenna radiation patterns; antennas; electromagnetic wave polarisation; antenna radiation patterns; axial-ratio criterion; circularly polarized wave; forward fire mode; helical turns; low pitch; low-profile helix; pitch angle; radiating element; two turn helix antenna; Coaxial components; Coplanar waveguides; Current distribution; Feeds; Helical antennas; Helium; Lead; Moment methods; Polarization; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
