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Dual band wristband antenna with metal frame loaded for biomedical applications
Author(s) -
Duan Zhu,
Xu LiJie
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30690
Subject(s) - frame (networking) , multi band device , wimax , bandwidth (computing) , center frequency , antenna (radio) , ism band , electrical engineering , radio spectrum , engineering , acoustics , frequency band , electronic engineering , materials science , physics , telecommunications , wireless , band pass filter
This letter proposes a dual band wristband antenna for biomedical monitoring applications. With a metal frame loaded, the lower resonant frequency can be pushed further. Additionally, by adopting an umbrella‐shaped radiating part and a notched ground, the bandwidth can be greatly enhanced. Finally, by properly rotating the protruding stubs of the central ground and coupling them to the metal frame, the resonant frequency can be adjusted to the desired ranges at 2.45 and 5.8 GHz Industrial Scientific and Medical (ISM) band. The proposed antenna can be intended for application where simultaneous telemetry with implanted device as well as external base station is required. The simulated and measured bandwidths on wrist are 6.1%, 7.0% at 2.45 GHz and 44.3%, 53.6% at 5.8 GHz, making it robust enough to withstand the frequency shift brought by tissue in close proximity.