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A Reconfigurable Antenna for Quad-Band Mobile Handset Application

4중 대역을 포함하는 휴대폰용 재구성 안테나

  • Park, Young-Keun (Department of Electronic Engineering, Kyonggi University) ;
  • Sung, Young-Je (Department of Electronic Engineering, Kyonggi University)
  • 박영근 (경기대학교 전자공학과) ;
  • 성영제 (경기대학교 전자공학과)
  • Received : 2011.11.10
  • Accepted : 2012.02.21
  • Published : 2012.05.31

Abstract

In the communication, a reconfigurable antenna using two PIN diodes is presented for quad-band(GSM900/GSM1800/GSM1900/UMTS) mobile handset applications. The proposed antenna has a size $45{\times}11{\times}6mm^3$. By independently adjusting the on/off states of two PIN diodes located on the radiating element, the proposed structure can be operated in the PIFA and loop mode, respectively. The PIN diodes are replaced by conducting tape in order to verify the concept. In regards to the fabricated reconfigurable antenna, when operating in the PIFA mode, the measured results show that the 7 dB bandwidth is 8.62 %. which covers the GSM900(880~960 MHz) band. When operating in the loop mode, the measured results show that the 7 dB bandwidth is 26.36 %, which covers the GSM1800(1,710~1,880 MHz), GSM1900(1,850~1,990 MHz), and UMTS(1,920~2,170 MHz) bands, respectively.

본 논문에서는 핀 다이오드를 사용하여 4중 대역(GSM900/GSM1800/GSM1900/UMTS)을 포함하는 휴대폰 용 재구성 안테나를 제안하였다. 제안한 안테나의 크기는 $45{\times}11{\times}6mm^3$이다. 안테나 패턴 위에 위치한 두 개의 핀 다이오드를 독립적으로 조절하여 다이오드가 on/off 됨에 따라 각각 Planar Inverted-F Antenna(PIFA) mode와 loop mode로써 동작하게 하였다. 재구성 안테나의 설계를 검증하기 위해 핀 다이오드 대신 conducting tape을 사용하여 prototype을 설계, 제작, 실험하였다. 제작한 재구성 안테나에서 PIFA 모드로 동작할 때의 측정 결과는 7 dB 대역폭이 8.62 %(880~960 MHz)이며, GSM900(880~960 MHz) 대역을 포함한다. Loop 모드로 동작할 때의 측정결과는 7 dB 대역폭이 26.36 %(1,696~2,240 MHz)로 GSM1800(1,710~1,880 MHz)/GSM1900(1,850~1,990 MHz)/UMTS(1,920~2,170 MHz)대역을 포함한다.

Keywords

References

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