• Title/Summary/Keyword: Cpw 급전 개구면 안테나

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Designs on CPW-FED Aperture Antenna for UWB Applications for Wireless System in a Ship (선박 내 무선 시스템을 위한 UWB용 CPW-FED APERTURE 안테나 설계)

  • Kim, Kab-Ki
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.14 no.4
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    • pp.347-351
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    • 2008
  • In this paper, a new co-planar waveguide ultra-wideband aperture is designed as wireless application in ships. The designed antenna consists of a rectangular aperture on a determined ground plane and a mushroom shaped stub. The mushroom-shaped stub, which is simple, convenient to analyze and optimise, has less parameters. This antenna has compact aperture size $21.1{\times}8.1mm^2$, designed on FR-4 substrate with dielectric constant of 4.3, thickness of 1.5mm. CPW fed planar antenna has the advantages of wide-bandwidth, low-cost and easy interaction with the radio frequency front end circuitry.

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Directivity Gain Improvement Method for UWB Coplanar Patch Antenna (UWB 평면 패치안테나의 지향성이득의 향상 방법)

  • Joo, Chang-Bok
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.49 no.6
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    • pp.63-70
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    • 2012
  • This paper discussed on the directive gain improvement method of the U-type ultra wide-band(UWB) planar patch antenna model with CPW feeding. For directive gain improvement, the U-type printed patch antenna model with CPW feeding is reconstructed as a microstrip structure by adding a reflection plane with aperture slot. The reflection coefficient of the reconstructed antenna is less than -6.5 dB(VSWR < 3.3) to the characteristic impedance of $50.08{\Omega}$ and showed the directive radiation patterns with the directive gain of 7.5 dBi ~ 10.1 dBi, the front-back ratio of 17.8 dB ~ 28.7 dB and the range of -3dB radiation angle over ${\pm}30^{\circ}$ to the main beam direction of ${\theta}=0^{\circ}$.