MULTIBAND ANTENNA AND MOBILE TERMINAL
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United States of America Patent
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Issued Date -
Oct 2, 2014
app pub date -
Sep 10, 2012
filing date -
Nov 22, 2011
priority date (Note) -
Abandoned
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Abstract
The antenna has a configuration in which three inductors, i.e., first to third inductors 5 to 7 having values of inductances L1 to L3, respectively, are arranged in an inverted F-shaped antenna formed of miniaturized four antenna elements, i.e., first to fourth antenna elements 1 to 4 with an element length shorter than that of each wavelength of desired resonance frequencies are grounded at a GND ground point 11. A power feeding unit 10 feeds electric power to the inverted F-shaped antenna through a matching circuit 9, thereby enabling a plurality of antenna operations of a two-resonance loop antenna that resonates at two resonance frequencies on a high-frequency side, an inverted F-shaped antenna that resonates at two resonance frequencies on a low-frequency side, and an inverted L-shaped antenna.
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