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Design and Implementation of Broadband Antenna and Diplexer for Dual- Band Handsets

KIEE international transactions on electrophysics and applications v.4C no.6 , 2004년, pp.288 - 294  
Joung, Myoung-Sub (School of Electrical Engineering, Kookmin University ) ;  Park, Jun-Seok ( School of Electrical Engineering, Kookmin University ) ;  Kim, Hyeong-Seok ( Dept. of Electrical and Electronics Engineering, Chungang University ) ;  Lim, Jae-Bong ( School of Electrical Engineering, Kookmin University ) ;  Cho, Hong-Goo ( School of Electrical Engineering, Kookmin University)
Abstract

In this paper, a ceramic antenna and diplexer are designed for dual-band handset ap plications. Basically, the antenna is designed by using the meander line configuration. The diplexer presented in this paper is composed of both low- and high-pass filters. We have designed the low- and high-pass filters with attenuation poles to improve the attenuation performances of the diplexer. The attenuation poles are located at each rejection frequency region so as to improve the shrinkage characteristic of the diplexer. In order to accomplish the volume effectiveness, the antenna and the diplexer have been designed and fabricated in a multi-layer structure. The diplexer designed with a multi-layer structure has inductors and capacitors, which are implemented by LTCC (Low Temperature Co-fired Ceramics) process technique. Design of the multi-layer antenna and diplexer has been achieved by employing the full 3-D EM simulation. The designed antenna and diplexer offer excellent return loss and broadband performances with highly isolated rejection performance.

주제어

#antenna   #diplexer   #LTCC  

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참고문헌 (7)

  1. Jong-Hwan Lee, Jong-Myung Woo, 'Design of a Surface-mounted Chip Dielectric Ceramic Antenna for PCS Phone', The Journal of Korea Electromagnetic Engineering Society, vol. 11, no. 1, pp.55-62, Jan 2000 
  2. Shyh-Timg Fang, 'A Novel Polarization Antenna for WLAN Applications', Proc. IEEE APS/URSI Inter. Symp. vol. 1, July 200 
  3. Jung-Ick Moon, Seong-Ook Park, Duck-Jae Lee, Yong-Seong Wang, Chung-Kook Lee 'The Design of Small Size and High Gain Chip Ceramic Dielectric Antenna for Bluetooth Application' The Korea Electromagnetic Engineering Society, vol 12, no 6, pp.983-993, Oct 2001 
  4. Keisuke Noguchi and Motoo Mizusawa, 'Numerical Analysis of the Radiation Characteristics of the Meander Line Antennas Consistig of Two-Strips', APS, Digest. vol.3, 1996 
  5. Raiesh Kumar Mongia, Apisak Ittipiboon, 'Theoretical an Experiemental Investigations on Rectangular Dielectric Resonator Antennas', IEEE Trans. on Antennas and Propagation, vol. 45, no. 9, pp.1348-1356, Sep 1997 
  6. Atef Z. Elsherbeni, Chun-Wen Paul Huang and Charles E. Smith, 'Wide Band Meanser line Antenna for Wireless Communication Systems', IEEE AP-S, pp.17-20, 2000 
  7. A. A, Kishk, M. R. zunoubi and D. Kajfez, 'A Numerical Study of a Dielectric Disk Antenna above a Grounded Dielectric Substrate', IEEE Trans. on Antennas and Propagation, AP-41, pp.812-821, June 1993 

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