A study for rotational symmetry of the aperture field on Spiral Array radial line slot antenna

Author

Ueda, Hideki ; Koyama, Yusuke ; Hirokawa, Jiro ; Ando, Makoto ; Albani, Matteo

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

We calculated the azimuthal deviations varying slot parameters of spiral array RLSAs. The inner/outer termination angles of the slot array have little influence on the azimuthal distributions. The element spacing in the circumferential direction has a significant impact on the azimuthal distributions. When the element spacing in the circumferential direction is 0.58 lambdag, the deviations are minimized to 4.5 dB and 32 deg. As above, the azimuthal deviations are determined not by local parameters but by global parameters.

Keywords

aperture antennas; slot antenna arrays; azimuthal deviation; inner-outer termination angle; rotational symmetry; spiral array radial line slot antenna; Antenna arrays; Aperture antennas; Electromagnetic propagation; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic wave polarization; Electromagnetic waveguides; Planar arrays; Slot antennas; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Conference_Location

Charleston, SC

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Type

conf

DOI

10.1109/APS.2009.5172192

Filename

5172192