Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Meng-Kai Wu0
Ching-Wen Chen0
Chung-Che Lien0
Date of Patent
November 23, 2021
0Patent Application Number
167382680
Date Filed
January 9, 2020
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A communication device includes a dielectric substrate, a first coil antenna, a second coil antenna, and a switch circuit. The first coil antenna has a hollow region. The second coil antenna is disposed inside the hollow region of the first coil antenna. The dielectric substrate is configured to carry the first coil antenna and the second coil antenna. The switch circuit selectively enables at least one of the first coil antenna and the second coil antenna according to a power signal.
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