Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2008.19.5.515

Design and Fabrication of the H-Type Slot Antenna with Bazooka Balun for a WiBro Repeater  

Choi, Won-Jun (LG Electronics Mobile Communications Laboratory)
Kim, Che-Young (School of Electrical Engineering and Computer Science, Kyungpook National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.5, 2008 , pp. 515-522 More about this Journal
Abstract
In this paper, a slot antenna with built-in Bazooka balun aimed for a WiBro repeater was designed and fabricated. The return loss and radiation pattern of the slot antenna were improved due to the introduced Bazooka balun. This balun brings about even radiation pattern and keeps the stabilized coverage of repeater And it is easy to unite this balun with the antenna body by providing the terminal of Bazooka balun with screw shape. H-type slot was used to reduce the size of the antenna, and the slot antenna was fabricated in the structural symmetry with respect to a feeding point to afford the omni-directional radiation pattern. The simulated results were obtained by MWS(Microwave Studio Simulator) of CST company, and the measurement on the proposed antenna was conducted in an anechoic chamber equipped with a network analyzer and a far field measurement system. The measured peak gain shows 5.75 dBi and the average gain is above -0.8 dBi. The return loss remains below -12.35 dB for all frequency bands in WiBro regarded as a good performance.
Keywords
Slot Antenna; WiBro; Repeater; Bazooka Balun;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 안정선 외,'격리도가 향상된 US-PCS 대역 댁내용 중계기 안테나 설계', 한국전자파학회논문지, 16(1), pp. 9-18, 2005년 1월   과학기술학회마을
2 오종대 외, '셀룰러 CDMA와 IMT-2000 중계기용 슬롯 구조 이중 대역 모노폴 안테나의 설계 및 구현', 한국전자파학회논문지, 14(9), pp. 912-918, 2003년 9월
3 Georges Amvame-Nze, 'Analysis and tests of the new cylindrical dipole antenna structure with a bazooka balun', IEEE MTT-S International, Microwave and Optoelectronics Conference, vol. 1, pp. 375-379, 2003
4 Hiroyuki Arai, Measurement of Mobile Antenna Systems, Artech House, pp. 38-39, 2001
5 W. L. Stutzman, G. A. Thiele, Antenna Theory and Design, John Wiley and Sons, pp. 180-187, 1998
6 W. T. Slingsby, J. P. McGeehan, 'A high-gain cell enhancer', Vehicular Technology Conference IEEE 42nd, vol. 2, pp. 756-758, 1992
7 김영 외, 'Wibro 시스템 기술', 대한전자공학회, 텔레콤, 21(1), pp. 58-72, 2005년
8 김채영 외, 도심 환경 재현용 무반사실 구조물 설계 및 전파특성 측정, (주)창우통상, 2006년
9 Jong-Wook Lee, K. J. Webb, 'A low-loss planar microwave balun with a integrated bias scheme for push-pull amplifiers', IEEE MTT-S International, Microwave Symposium Digest, vol. 1, pp. 197-200, 2001