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Study of the Bluetooth headset antenna with the user's head
Author(s) -
Wong KinLu,
Hsu MingRen,
Li WeiYu,
Su SaouWen,
Chen Austin
Publication year - 2007
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.22047
Subject(s) - headset , bluetooth , coaxial antenna , electrical engineering , antenna measurement , antenna rotator , engineering , omnidirectional antenna , antenna (radio) , antenna efficiency , telecommunications , wireless
A promising planar inverted‐F metal‐strip antenna suitable for Bluetooth headset application is studied. The antenna has a low‐profile appearance and can be embedded inside the housing of the Bluetooth headset to operate as an internal antenna. The antenna is to be mounted along the side edge of the system circuit board of the headset, almost not occupying the valuable board space. Results have indicated that, when the antenna is mounted at either end of the side edge, a large bandwidth (>250 MHz) centered at about 2442 MHz can be achieved, making the antenna easily cover the Bluetooth operation in the 2400–2484 MHz band. Performances of the studied antenna attached to the user's head are also studied. Large distortion in the antenna's radiation pattern is observed. However, the antenna's radiation efficiency is still larger than about 70% over the operating band, which is acceptable for practical applications. Details of the obtained experimental and simulation results are presented and discussed. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 19–23, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22047