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학술지 Dual-band MNG Patch Antenna for Smart Helmet
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저자
이학준, 양회성, 명승일, 이강복
발행일
201809
출처
Electronics Letters, v.54 no.19, pp.1101-1102
ISSN
0013-5194
출판사
IET
DOI
https://dx.doi.org/10.1049/el.2018.6044
초록
A novel dual-band compact patch wireless fidelity (Wi-Fi) antenna using 쨉-negative (MNG) transmission lines (TLs) for the smart helmet is presented. In the smart helmet scenario, rescue agent is able to communicate with the other rescue agents, control centre, and drones via the helmet by Wi-Fi dual bands. For the smart helmet communication, the antenna, which consists of two MNG-TL loops located on the outside and inside, is devised. The dual-band corresponds to the zeroth-order resonance (ZOR) and second-positive-order resonance (SPOR) of the outer MNG-TL. The ZOR frequency of the outer MNG-TL is near the Wi-Fi 2.4 GHz band, and the SPOR frequency of the outer MNG-TL, excited by the coupling between the inner and outer MNG-TL loops, is the Wi-Fi 5 GHz band. The prototype of the proposed antenna has been fabricated and measured. The bandwidth of the antenna includes Wi-Fi 2.4 and 5 GHz bands with high radiation efficiencies of >49% and a compact size of 27.6 mm × 27.6 mm × 1.27 mm (1/4.5? × 1/4.5? × 1/98.4? at the lowest operating frequency).
KSP 제안 키워드
2.4 GHz band, 5 GHz, 7 mm, Compact patch, Compact size, Control Centre, Dual-band, MNG-TL, Operating frequency, Patch Antenna, Transmission line