Radio IC device
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United States of America Patent
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Aug 6, 2019
Grant Date -
Dec 8, 2016
app pub date -
Aug 24, 2016
filing date -
Jul 18, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A radio IC device includes an electromagnetic coupling module includes a radio IC chip arranged to process transmitted and received signals and a feed circuit board including an inductance element. The feed circuit board includes an external electrode electromagnetically coupled to the feed circuit, and the external electrode is electrically connected to a shielding case or a wiring cable. The shielding case or the wiring cable functions as a radiation plate. The radio IC chip is operated by a signal received by the shielding case or the wiring, and the answer signal from the radio IC chip is radiated from the shielding case or the wiring cable to the outside. A metal component functions as the radiation plate, and the metal component may be a ground electrode disposed on the printed wiring board.
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