Design of a Dual-Mode Planar Antenna Using a Reconfigurable Matching Network

재구성 정합 회로를 이용한 평판형 이중 모드 안테나 설계

  • Kim, Yoon Geon (Samsung Electronics Digital Media & Communication R & D Center) ;
  • Kay, Youngchul (School of Electronic and Electrical Engineering, Hongik University) ;
  • Choo, Hosung (School of Electronic and Electrical Engineering, Hongik University)
  • 김윤건 (삼성전자 DMC 연구소) ;
  • 계영철 (홍익대학교 전자전기공학부) ;
  • 추호성 (홍익대학교 전자전기공학부)
  • Received : 2012.05.17
  • Accepted : 2012.12.07
  • Published : 2012.12.31


In this paper, we propose a novel reconfigurable antenna that can change the electrical shape of the matching network using RF switches of PIN diodes. The designed antenna operates at two different modes that are Mode 1 (HSDPA band, 2.1~2.2 GHz) and Mode 2(WiBro WiFi band, 2.3~2.5 GHz). The antenna is built on both sides of a polyarcylate substrate. The measured reflection coefficient shows a matching bandwidth of 547 MHz($S_{11}$ <-3 dB, 2.035~2.582 GHz) for Mode 1 and 600 MHz($S_{11}$ <-3 dB, 2.2~2.8 GHz) for Mode 2, and it shows average vertical gains of -4.4 dBi and -4.5 dBi in x-y plane, respectively.


Supported by : 정보통신산업진흥원


  1. L. Dang, Z. Lei, Y. Xie, G. Ning, and J. Fan, "A compact microstrip slot triple-band antenna for WLAN/ WiMAX applications", IEEE Trans. Antennas Propag., vol. 9, no. 1, pp. 1178-1181, Sep. 2010.
  2. J. Jung, H. Lee, and Y. Lim, "Broadband flexible comb-shaped monopole antenna", IET Proc. Inst. Elect. Eng. Microwaves, Antennas Propag., vol. 3, no. 2, pp. 325-332, Oct. 2009.
  3. 김윤건, 계영철, 지성환, 추호성, "병렬 T-정합 회로를 이용한 차량 유리 부착형 광대역 안테나 설계", 한국전자파학회논문지, 23(1), pp. 122-130, 2012년 1월.
  4. FEKO Comprehensive EM solutions, [Online]. Available:
  5. D. E. Goldberg, Genetic Algorithms in Search, Optimization and Machine Learning, Addison-Wesley, Reading, MA, 1989.