Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Technique for Broadbanding the CPW-Fed Bow-Tie Slot Antenna

  • Kim Sung-Hak (Department of Radio Engineering, Graduate School, Chungbuk National University) ;
  • Wen Lijun (Department of Radio Engineering, Graduate School, Chungbuk National University) ;
  • Ko Han-Woong (Department of Radio Engineering, Graduate School, Chungbuk National University) ;
  • park Dong-Hee (School of Electrical, Electronics and Information Engineering, Chungju University) ;
  • Ahn Bierng-Chearl (Department of Radio Engineering, Graduate School, Chungbuk National University)
  • Published : 2005.03.01
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Abstract

In this paper, a technique is presented for broadbanding the bow-tie slot antenna fed by a CPW(coplanar waveguide). The bandwidth performance of existing bow-tie slot designs is greatly enhanced by optimizing the slot shape and properly adjusting the characteristic impedance of the coplanar waveguide feeding the slot. To connect the 50-ohm input coaxial line to the CPW feed line, a linear taper in the CPW is employed. The designed antenna shows a 3.5 $\~$ 10.0 GHz impedance bandwidth, a 3.5 $\~$ 6.0 GHz pattern bandwidth, and a 5.5 $\~$ 7.5 dBi gain over 3.5 $\~$ 6.0 GHz. Above 6.0 GHz, the antenna radiation pattern appreciably deviates from the typical dipolar pattern.

Keywords

References

  1. J. W. Greiser, 'Coplanar strip line antenna', Microwave J., pp. 47-49, Oct. 1976
  2. H. -C. Liu, T. -S. Horng, and N. G. Alexopoulos, 'Radiation from aperture antennas with a coplanar waveguide feed', IEEE AP-S Int. Symp. Dig., pp. 1820-1823, 1992
  3. X. Ding, A. F. Jacob, 'CPW-fed slot antenna with wide radiating apertures', lEE Proc. Microwave Antennas Propag., vol. 145, no. 1, pp. 104-108, Feb. 1998
  4. J. -F. Huang, C. -W. Kuo, 'CPW-fed bow-tie slot antenna', Microwave Opt. Tech. Lett., vol. 19, no. 5, pp. 358-360, Dec. 1998 https://doi.org/10.1002/(SICI)1098-2760(19981205)19:5<358::AID-MOP14>3.0.CO;2-X
  5. E. A. Soliman, S. Brebels, P. Belmotte, G. A. E. Vandnbosh, and E. Beyne, 'Bow-tie slot antenna fed by CPW', Electron. Lett., vol. 35, pp. 514-515, Apr. 1999 https://doi.org/10.1049/el:19990399
  6. M. Miao, B. L. Ooi, and P. S. Kooi, 'Broadband CPW-fed wide slot antenna', Microwave Opt. Tech. Lett., vol. 25, no. 3, pp. 206-211, May 2000 https://doi.org/10.1002/(SICI)1098-2760(20000505)25:3<206::AID-MOP14>3.0.CO;2-E
  7. G. Zheng, A. Z. Elsherbeni, and C. E. Smith, 'A coplanar waveguide bow-tie aperture antenna', IEEE AP-S Int. Symp. Dig., pp. 564-566, 2002
  8. G. Zheng, A. A. Kishk, A. W. Glisson, and A. B. Yakovlev, 'Slot antenna fed by a CPW line with tapered transition', Microwave Opt. Tech. Lett., vol. 38, no. 6, pp. 465-467, Sep, 2003 https://doi.org/10.1002/mop.11091
  9. J. -W. Niu, S. -S. Zhong, 'A broadband CPW-fed bow-tie slot antenna', IEEE AP-S Int. Symp. Dig., pp. 4483-4486, Jun. 2004
  10. J. -W. Nui, S. -S. Zhong, 'A CPW-fed broadband slot antenna with linear taper', Microwave Opt. Tech. Lett., vol. 41, no. 3, pp. 218-221, May 2004 https://doi.org/10.1002/mop.20098