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Hearing aid‐compatible internal LTE/WWAN bar‐type mobile phone antenna
Author(s) -
Chen ShuChuan,
Wong KinLu
Publication year - 2011
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.25837
Subject(s) - electrical engineering , mobile phone , umts frequency bands , engineering , wireless wan , printed circuit board , antenna (radio) , wireless , telecommunications , acoustics , wireless network , physics , wi fi array
An internal eight‐band LTE/WWAN on‐board printed antenna meeting the hearing air compatibility (HAC) specification of ANSI C63.19‐2007 in the bar‐type mobile phone is presented.The antenna is a coupled‐fed inverted‐F antenna directly printed on the system circuit board of the mobile phone and can generate two wide operating bands (698–960/1710–2690 MHz) to respectively cover the LTE700/ GSM850/900 and GSM1800/1900/UMTS/LTE2300/2500 operation. With the antenna disposed on the bottom edge of the circuit board and surrounded by an L‐shape ground plane, the near‐field strengths of the emitted electric and magnetic fields 15 mm above the acoustic output are evaluated to be in category M3 or M4 of the HAC specification. That is, the mobile phone with the embedded LTE/WWAN antenna can be treated as a hearing aid‐compatible wireless device. Details of the HAC results are presented. Effects of the user's hand holding the mobile phone on the near‐field emission of the antenna are also analyzed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:774–781, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25837