Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Miniaturized CPW-fed Folded Slot Antenna

소형화된 CPW 급전 폴디드 슬롯 안테나

  • Woo, Hee-Sung (C4ISR Systems Team 4 Defense Agency for Technology and Quality) ;
  • Shin, Dong-Gi (Department of Electronic Engineering, Kumoh National Institute of Technology) ;
  • Lee, Young-Soon (Department of Electronic Engineering, Kumoh National Institute of Technology)
  • 우희성 (국방기술품질원 지휘정찰4팀) ;
  • 신동기 (금오공과대학교 전자공학과) ;
  • 이영순 (금오공과대학교 전자공학과)
  • Received : 2020.03.30
  • Accepted : 2020.04.20
  • Published : 2020.04.30
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Abstract

In the present study, we proposed newly a CPW-fed miniaturized folded-slot antenna with open ended slot for WCDMA (1.92 ~ 2.17 GHz) band. Open-ended slots and asymmetric ground plane are used for a miniaturization of the antenna, and the proposed antenna was designed and fabricated on a FR-4 substrate with dielectric constant 4.3, thickness of 1.6 mm, and size of 35×70 ㎟. The measured impedance bandwidths (|S11| ≤ -10 dB) of fabricated antenna is about 400 MHz (1.86 ~ 2.26 GHz), which sufficiently satisfied interested band. Furthermore, the gain of antenna is 2 dBi and this antenna shows a similar radiation patterns of the dipole antenna. Therefore, it is expected to be used usefully in wireless and mobile communication device.

본 논문에서는 WCDMA (1.92 ~ 2.17 GHz) 용 개방 종단된 슬롯을 가지는 소형화된 CPW 급전 폴디드 슬롯 안테나를 새롭게 제안하였다. 안테나의 소형화를 위해 개방 종단된 슬롯과 비대칭 접지면이 사용되었으며, 안테나의 크기는 35×70 ㎟, 두께는 1.6 mm, 유전상수가 4.3인 FR-4 기판에 설계 및 제작 되었다. 제안하는 안테나의 측정된 임피던스 대역폭(|S11|≤-10dB)은 400 MHz (1.86 GHz ~ 2.26 GHz)를 얻어 충분히 사용하고자 하는 대역을 만족했다. 또한 안테나의 이득은 2 dBi이고, 방사패턴은 다이폴 안테나와 유사하게 E-Plane에서 8자 형태를 H-plane에서는 무지향 패턴을 보여 방향에 따른 수신 전계강도의 변화가 없어야하는 무선통신기기 및 이동통신단말기에 유용하게 활용이 될 수 있을 것으로 기대된다.

Keywords

References

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