Antenna device, antenna module, and portable terminal
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United States of America Patent
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Jun 9, 2015
Grant Date -
Jun 13, 2013
app pub date -
Feb 7, 2013
filing date -
Dec 21, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Radiation electrodes are formed on a dielectric base body of an antenna chip. A capacitive feeding electrode is formed on a first end surface of the dielectric base body. A ground electrode, a feeding circuit connection electrode, feeding lines, a tip electrode, and the like are formed on the top surface of a base member of a substrate. When a first switching element selects the feeding line side, a second switching element is made to enter a conducting state. In this state, the radiation electrodes are capacitively fed. When the first switching element selects the feeding line side, the second switching element is made to enter an open state. In this state, the radiation electrodes are directly fed. In this manner, the directivity direction of an antenna can be switched using a single radiation element.
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