Compact Dual-band CPW-fed Slot Antenna Using Split-Ring Resonator

분할 링 공진기를 이용한 소형 이중 대역 CPW-급전 슬롯 안테나

  • Yeo, Junho (School of Computer and Communication Engineering, Daegu University) ;
  • Park, Jin-Taek (Department of Mobile Communication Engineering, Changshin University) ;
  • Lee, Jong-Ig (Department of Electronics Engineering, Dongseo University)
  • Received : 2015.10.02
  • Accepted : 2015.11.09
  • Published : 2015.11.30


In this paper, a design method for a compact dual-band coplanar waveguide-fed slot antenna using SRR(split-ring resonator) conductor is studied. The SRR conductor is loaded inside a rectangular slot of the proposed antenna for dual-band operation. When the SRR conductor is inserted into the slot, the original rectangular slot is divided into a rectangular loop region and a rectangular slot region, and frequency bands are created by the loop and slot, separately. A prototype of the proposed dual-band slot antenna operating at 2.45 GHz WLAN band and 3.40-5.35 GHz band is fabricated on an FR4 substrate with a dimension of 30 mm by 30 mm. Experiment results show that the antenna has a desired impedance characteristic with a frequency band of 2.38-2.51 GHz and 3.32-5.38 GHz for a voltage standing wave < 2, and measured gain is 1.7 dBi at 2.45 GHz, and it ranges 2.4-3.2 dBi in the second band.


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