Design of CPW-Feed Multi-Band Monopole Antenna for Next Generation WLAN Systems

차세대 WLAN을 위한 CPW 급전 다중대역 모노폴 안테나 설계

  • 최용석 (상지대학교 컴퓨터정보공학부) ;
  • 성현경 (상지대학교 컴퓨터정보공학부) ;
  • 노정규 (서경대학교 컴퓨터과학과)
  • Received : 2014.01.24
  • Accepted : 2014.03.12
  • Published : 2014.03.30

Abstract

In this paper, we designed a multiband monopole antenna for next-generation WLAN system. In conventional WLAN system, UWB antennas were used together, and, because the radiation occurs in different parts depending on the antenna structure, it has the disadvantage of having an unstable impulse response characteristic due to dispersion characteristics. Although a UWB antenna that has suitable radiation pattern for WLAN band, it does not have good impedance matching and has severe echo. Therefore, in this paper, a monopole antenna was designed by using CPW power feed so that various impedances can be easily implemented when designing an antenna and more parameters can be derived that can be used for design for optimal performance.

본 논문에서는 차세대 WLAN 시스템을 위한 다중대역 모노폴 안테나를 설계하였다. 기존의 WLAN 시스템에서는 UWB용 안테나를 병행으로 사용하였으며, 안테나 구조에 따라 각각 다른 부분에서 복사가 일어나기 때문에 분산 특성으로 인한 불안정한 임펄스 응답 특성을 갖는 단점이 있다. 이런 점을 보완하기 위해 WLAN 대역에 적합한 복사 패턴을 갖는 UWB 안테나가 개발되었으나 임피던스 매칭이 좋지 않고 반향이 심한 문제점이 있다. 그러므로 본 논문에서는 안테나 설계 시 다양한 임피던스를 쉽게 구현할 수 있고, 설계 시 사용할 수 있는 파라미터를 더 많이 도출하여 최적의 성능을 나타낼 수 있도록 CPW 급전을 이용한 다중대역 모노폴 안테나를 설계하였다.

Keywords

References

  1. S. H. Yeh, K. L. Wong, "Dual-band F-shaped Monople Antenna for 2.4/5.2GHz Wlan Application," In Proc. of IEEE Antennas and Propagation Society International Symposium, Vol. 4, pp. 72-75, 2002.
  2. Y. Liu, Q. W. Ye, B. Xiao, H. Yang, "A novel application of frequency selective surface in dual-band WLAN antenna,"In Proc. of International Symposium on Antennas and Propagation & EM Theory, Vol. 1, pp. 512-514, 2012.
  3. C. Kim, J. S. Jang, Y. H. Jung, H. S. Lee, D. K. Cho, S. B. Park, "A Wideband Planar Surface Wave Antenna for the WLAN Router,"International Journal of Electronics and Communications, Vol. 64, Issue 9, pp. 888.894, 2010.
  4. M. C. Liang, Y. M. Chen, C. C. Huang, W. S. Chen, "An Electrically Small Impedance-matched Microstrip Antenna Design,"In Proc. of IEEE Antennas and Propagation Society International Symposium, Vol. 4, pp. 38-41, 2002.
  5. A. Kaveh, S. Talatahari,"Particle Swarm Optimizer, ant Colony Strategy and Harmony Search Scheme Hybridized for Optimization of Truss Structures"Computers & Structurem Vol. 87, Issues 5-6, pp. 267-283, 2009. https://doi.org/10.1016/j.compstruc.2009.01.003
  6. H. Kanaya, Y. Nakamura, R. K. Pokharel, K. Yoshida, H. Matsukuma,"Development of Electrically Small Planar Antennas with Transmission Line based Impedance Matching Circuit for a 2.4GHz band,"International Journal of Electronics and Communications, Vol. 65, Issue 2, pp. 148-153, 2011. https://doi.org/10.1016/j.aeue.2010.03.001
  7. J. Ng, R. W. Ziolkowski, J. S. Tyo, M. C. Skipper,"An Efficient, Electrically Small, Three-Dimensional Magnetic EZ Antenna for HPM Applications," IEEE Transactions on Plasma Science, Vol. 40, Issue 11, 2012.
  8. M. H. Jung, S. K. Lee, S. C. Bang, "Resent Trends to Next-Generation Wireless LANs, Electronics and Telecommunications Trends of ETRI Journal, Vol. 27, No. 2, pp.1-10, 2012.
  9. H. Morishita, Y. H. Kim, K. Fujimoto,"Design oncept of Antennas for Small Mobile Terminals and the Future Perspective,"IEEE Antennas and Propagation Magazine, Vol. 44, Issue 5, pp. 30-43, 2002.
  10. P. Lotfi, S. Soltani, M. Azarmanesh,"Triple band-notched UWB CPW and Microstrip line Fed Monopole Antenna using Broken $\cap$-shaped Slot,"International Journal of Electronics and Communication, Vol. 65, Issue 9, pp. 734-741, 2011. https://doi.org/10.1016/j.aeue.2010.11.001
  11. X. L. Quan, R. L. Li, Y. H. Cui, M. M. Tentzeris,"Analysis and Design of a Compact Dual-Band Directional Antenna,"IEEE Antennas and Wireless Propagation Letters, Vol. 11, pp. 547-550, 2012. https://doi.org/10.1109/LAWP.2012.2199458
  12. P. S. Shelokar, P. Siarry, V. K. Jayaraman, B. D. Kulkarni, "Particle Swarm and Ant Colony Algorithms Hybridized for Improved Continuous Optimization", Applied Mathematics and Vol. 188, Issue 1, pp.129-142, 2007.
  13. R. Ghatak, R. K. Mishra, D. R. Poddar,"Perturbed Sierpinski Carpet Antenna With CPW Feed for IEEE 802.11 a/b WLAN Application,"IEEE Antennas and Wireless Propagation Letters, Vol. 7, pp. 742-744, 2008. https://doi.org/10.1109/LAWP.2008.2004815
  14. G. Rowdra, C. Goswami, R. K. Mishra, D. R. Poddar, "A CPW-Fed Planar Monopole Antenna with Modified H-Shaped Slot for WLAN/Wi-MAX Application," Microwave and Optical Technology Letters, Vol. 54, Issue 5. pp. 1296-1301, May 2012. https://doi.org/10.1002/mop.26747