Beam tilted base station antenna with electromagnetic gradient surface

Author

Yoon, Ji Hwan ; Ahn, Jihwan ; Chang, Kihun ; Yoon, Young Joong

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

fYear

2010

fDate

20-24 Sept. 2010

Firstpage

481

Lastpage

484

Abstract

A base station antenna for WCDMA band (1.920-2.170 GHz) application utilizing an electromagnetic gradient surface (EGS) is proposed. The EGS is applied as a reflector of 4×2 dipole array to tilt the beam with electrically without phase shifters on low-profile structure. Therefore the beam can be tilted with lower complexity, smaller size, and cheaper cost compared to conventional mechanical or electrical beam tilting methods. The EGS reflector is designed to provide 6° downward tilt angle of the main beam. The fabricated antenna exhibits 5.6 tilt angle with gain of 16.9 dBi at 2.045 GHz.

Keywords

UHF antennas; antenna radiation patterns; code division multiple access; dipole antenna arrays; reflector antennas; EGS reflector; WCDMA band; bandwidth 1.920 GHz to 2.170 GHz; beam tilted base station antenna; dipole array; electrical beam tilting; electromagnetic gradient surface; low-profile structure; mechanical beam tilting; Antenna measurements; Arrays; Base stations; Dipole antennas; Reflection; Reflector antennas; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4244-7366-3

Type

conf

DOI

10.1109/ICEAA.2010.5653759

Filename

5653759