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http://dx.doi.org/10.5515/KJKIEES.2008.19.12.1416

Small Size Directional Dipole Antenna for Mobile Communications  

Lee, Kwang-Jae (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
Woo, Duk-Jae (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
Kim, Sang-Jin (GAMMA NU, INC.)
Lee, Jae-Wook (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
Lee, Taek-Kyung (School of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.12, 2008 , pp. 1416-1426 More about this Journal
Abstract
In this paper, we present a small size and multiband directional dipole antenna for mobile communication repeaters. In the omni-directional dipole antenna, a planar reflector under the dipole provides improved directivity in front-direction with wide beamwidth. In order to miniaturize the directive dipole, the size of the reflector is reduced. A vertical stub on the reflector is proposed to enhance the front-directivity of the radiation pattern and mitigate the backward radiation due to the reduced reflector. Furthermore, we use horizontal stubs on edge of vertical stub to obtain additional reduction of the antenna size. To meet the current demand of wireless communication service, the designed antenna shows wideband characteristic by employing electromagnetic coupled two-dipoles with dual-resonance frequencies.
Keywords
Directional Dipole Antenna; Miniaturization; Multiband;
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