• Title/Summary/Keyword: Folded monopole slot antenna

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Design of Wide band folded monopole slot antenna for 3G/4G/5G/Wi-Fi(dual band) services (3G/4G/5G/Wi-Fi(이중대역)용 광대역 모노폴 슬롯 안테나 설계)

  • Shin, Dong-Gi;Lee, Yeong-Min;Lee, Young-Soon
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.22 no.1
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    • pp.127-134
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    • 2022
  • A modified folded monopole slot antenna for 3G WCDMA (1.91 ~ 2.17 GHz), 4G LTE (2.17 ~ 2.67 GHz), 3.5 GHz 5G (3.42 ~ 3.7 GHz) and Wi-Fi dual band (2.4 ~ 2.484 GHz / 5.15 ~ 5.825 GHz) was proposed for the first time. The proposed antenna is designed and fabricated on a FR-4 substrate with dielectric constant 4.3, thickness of 1.6 mm, and size of 35 × 60 mm2. The measured impedance bandwidth of the proposed antenna is 2910 MHz(1.84 ~ 4.75 GHz) and 930 MHz(5.11 ~ 6.04 GHz), antenna gain in each frequency band is from 1.811 to 3.450 dBi. In particular, it was possible to obtain a commercially suitable omni-directional radiation pattern in all frequency bands of interest.

Multiband-Notched UWB Antenna Using Folded Slots in the Feeding Structure

  • Ta, Son Xuat;Park, Ikmo
    • Journal of electromagnetic engineering and science
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    • v.14 no.1
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    • pp.31-35
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    • 2014
  • An ultra-wideband (UWB) circular monopole antenna with a multiband-notched characteristic is proposed. The multiband-notched filter consists of three different sized folded slots, which are distinctly assigned for the notched band at the 3.5-GHz WiMAX, 5-GHz WLAN, and 8-GHz ITU bands. The proposed antenna results in a measured ${\mid}S_{11}{\mid}$ < -10 dB, which completely covers the UWB band (3.1 10.6 GHz) with three notched bands at 3.5, 5.5, and 8.0 GHz. The antenna yields an omnidirectional radiation pattern and high radiation efficiency.

Dual-band Compact CPW-fed Slot Antenna for WLAN applications (WLAN 시스템용 이중 대역 CPW 소형 슬롯 안테나)

  • Choi, In-Tae;Shin, Ho-Sub
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.20 no.1
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    • pp.1-7
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    • 2016
  • In this paper, the compact CPW-fed slot antenna for WLAN applications is proposed. While the proposed antenna with size of only $20{\times}18{\times}1mm^3$ is consisted of double stub and folded slot, the antenna for 2.4 GHz band and 5 GHz band is designed and fabricated with optimized parameters obtained by simulation. Proposed antenna is fabricated with FR-4 substrate to the thickness of 1.0 mm. By obtaining the measured return loss level of < -10 dB at dual-band, we showed that it is operated as antenna for WLAN applications, and then it is also expected to be usable as antenna for RFID.

A Compact CPW-fed Antenna for 2.4 GHz WLAN applications (2.4 GHz 무선랜 대역용 CPW 소형 안테나)

  • Choi, In-Tae;Shin, Ho-Sub
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.11
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    • pp.1245-1250
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    • 2015
  • In this paper, a compact CPW-fed antenna for 2.45 GHz band WLAN applications is presented. The proposed antenna which has a geometry of folded stub and slot is fabricated into an inexpensive FR-4 substrate that has a dielectric constant of 4.2 and a thickness of 1.0 mm with optimized parameters obtained by simulation, and then measured. From measured result, we confirmed available operation as antenna for WLAN applications by obtaining the return loss level of < -10 dB in the frequency band of 2.4-2.484 GHz.

A Compact CPW-fed Antenna with Step Structure for 5 GHz Band WLAN Applications (계단구조를 갖는 5 GHz 대역 무선랜용 소형 CPW 안테나)

  • Choi, In-Tae;Shin, Ho-Sub
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.20 no.1
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    • pp.8-14
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    • 2016
  • In this paper, a compact CPW-fed antenna for 5 GHz (5.15-5.35 GHz, 5.725-5.825 GHz) band WLAN applications is presented. The designed antenna's shape is step structure. The antenna is fabricated and measured into FR-4 substrate of dielectric comstant 4.2 and thickness 1.0 mm with optimized parameters obtained by simulation. We confirm that it is operated as antenna for WLAN applications by obtaining the measured return loss level of < -10 dB in 5.133-5.982 GHz. The dimensions of the antenna ($20.0{\times}16.0{\times}1.0mm^3$) shows an compactness of about 67.17% with respect to a conventional folded slot antenna.