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Wideband coupled‐fed PIFA for HAC penta‐band clamshell mobile phone
Author(s) -
Chen WeiYu,
Wong KinLu
Publication year - 2009
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.24620
Subject(s) - wideband , mobile phone , umts frequency bands , engineering , electrical engineering , specific absorption rate , microwave , phone , acoustics , materials science , telecommunications , physics , antenna (radio) , linguistics , philosophy
A wideband coupled‐fed PIFA suitable for application in the clamshell mobile phone for achieving WWAN operation and meeting hearing‐aid compatibility (HAC) standard ANSI C63.19‐2007 is presented. The coupled‐fed PIFA is formed by two coupled strips (a longer one and a shorter one) capacitively fed by a common feeding strip, all printed on a thin 0.8‐mm FR4 substrate and folded into a small size of 6 × 5.8 × 45 mm 3 (about 1.6 cm 3 ). The coupled‐fed PIFA is mounted at the hinge of the clamshell mobile phone and provides a very wide operating band of about 1.5 GHz (from about 0.8–2.3 GHz) to cover the penta‐band operation of GSM850/900/1800/1900/UMTS. With the wideband operation obtained, the radiated E‐field and H‐field strengths on the 50 × 50 mm 2 observation plane centered 15 mm above the center of the acoustic output of the clamshell mobile phone are evaluated to be in the M3 or M4 Category, making the mobile phone as a hearing‐aid compatible communication device. The clamshell mobile phone with the coupled‐fed PIFA also meets the SAR (specific absorption rate) limit of 1.6 W/kg for the 1‐g head tissue. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2369–2374, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24620