Keating & Bennett, LLP
Antenna device and electronic device
An antenna device includes a first coupling conductor connected to a power supply circuit, a second coupling conductor at least magnetically coupled to the first coupling conductor, a first capacitor connected in series to the second coupling conductor, a second capacitor connected in parallel to a series circuit including the second coupling conductor and the first capacitor, and an electrically conductive member connected to the second capacitor and defining a portion of or the entire closed loop together with the second capacitor. The capacitance of the first capacitor is smaller than the capacitance of the second capacitor.
MURATA MANUFACTURING CO., LTD.
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Hiromitsu Nobuyuki
Ito Tenno