Extremely low-profile spiral antenna with PEC and EBG reflectors

Author

Nakano, H. ; Oyanagi, H. ; Igarashi, T. ; Iitsuka, Y. ; Yamauchi, J.

Author_Institution

Coll. of Eng., Hosei Univ., Koganei, Japan

fYear

2009

fDate

14-18 Sept. 2009

Firstpage

70

Lastpage

73

Abstract

An extremely low-profile spiral antenna above a PEC reflector does not show wideband antenna characteristics. However, placing ring-shaped absorbing material between the outermost spiral arms and the PEC reflector mitigates deterioration in the antenna characteristics. Further investigation shows that removing absorbing material and replacing the PEC reflector by an EBG reflector contribute to realizing a low-profile antenna with high radiation efficiency.

Keywords

antenna feeds; antenna radiation patterns; broadband antennas; photonic band gap; reflector antennas; spiral antennas; EBG reflector; PEC reflector; antenna feed; extremely low-profile spiral antenna; high radiation efficiency; ring-shaped absorbing material; wideband antenna characteristics; Arm; Broadband antennas; Frequency; Impedance; Integral equations; Metamaterials; Periodic structures; Reflector antennas; Spirals; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on

Conference_Location

Torino

Print_ISBN

978-1-4244-3385-8

Electronic_ISBN

978-1-4244-3386-5

Type

conf

DOI

10.1109/ICEAA.2009.5297609

Filename

5297609