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Design and Fabrication of Modified Monopole Antenna for Wireless USB Dongle with WLAN system Applications

WLAN 시스템 적용 가능한 무선 USB 동글용 변형된 모노폴 안테나의 설계 및 제작

  • Received : 2015.04.23
  • Accepted : 2015.05.27
  • Published : 2015.10.31

Abstract

In this paper, we propose a built-in antenna for wireless USB dongle which has a modified structure from the existing planar monopole antenna. The proposed antenna implemented a dual-band characteristic by inserting Strip1, Strip2, Strip3 into the monopole structure combined with 'n' shape and feeded 50-Ω using coaxial cable. The antenna is designed on an FR-4 substrate of which the dielectric constant is 4.6, and its overall size is 10 mm × 50 mm × 1mm. Based on the measurement results of the return loss, it was confirmed to satisfy the dual band resonance characteristics of 740 MHz (2.3 ~ 2.7 GHz) and 1,200 MHz (5.15 ~ 5.825 GHz) by -10 dB. In addition, we obtain the omni-directional radiation pattern measurements in the operating frequency bands, and the maximum gain of the proposed antenna has 2.26~3.81 dBi in the 2.4 GHz band and 2.21~5.79 dBi. in the 5.5 GHz band, respectively.

Keywords

Wireless USB Dongle;Multiband antenna;WLAN application

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