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Compact multiband PIFA with a coupling feed for internal mobile phone antenna

Author:
Kin-Lu Wong   Chih-Hong Huang  


Issue Date:
2008


Abstract(summary):

Abstract

A compact multiband PIFA (planar inverted-F antenna) occupying a very small volume of less than 0.8 cm3 in the mobile phone for GSM/DCS/PCS/UMTS operation is presented. The PIFA uses a single resonant path only, which is close to about one-eighth wavelength at 900 MHz. A coupling feed, different from the conventional direct feed, is proposed to excite the PIFA. In this case, the large input impedance at 900 and 1900 MHz can be greatly decreased, making it promising to excite two operating bands at about 900 and 1900 MHz to cover the desired multiband operation. Good radiation characteristics for frequencies over the operating bands are also obtained. The occupied volume of the proposed multiband PIFA is about the smallest among the reported internal multiband mobile phone antennas. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2487–2491, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23727



Page:
2487-2491


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