Title :
Gain improvement of circularly polarized array antenna using linearly polarized elements
Author :
Iwasaki, Hisao ; Nakajima, Teruaki ; Suzuki, Yasuo
Author_Institution :
Toshiba Res. & Dev. Cente, Kawasaki, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
A novel gain improvement method for a circularly polarized array antenna consisting of linearly polarized elements is proposed. It is verified that the gain of a circularly polarized array antenna can be increased by adjusting the array arrangement of the individual linearly polarized elements. The gain of a multiring array antenna consisting of the above mentioned circular array can also be increased by properly combining the directions of the linear polarization of the individual circular arrays. The gain improvement of the single-circular array antenna and the two-ring array antenna using the proposed method are verified by the measured results
Keywords :
antenna arrays; antenna radiation patterns; antenna testing; directive antennas; electromagnetic wave polarisation; microstrip antenna arrays; array arrangement; circular array; circularly polarized array antenna; gain improvement method; linear polarization; linearly polarized elements; multiring array antenna; single-circular array antenna; two-ring array antenna; Antenna arrays; Antenna feeds; Antenna measurements; Aperture antennas; Directive antennas; Gain measurement; Linear antenna arrays; Optical polarization; Phased arrays; Receiving antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
