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公开(公告)号：US20210105045A1
公开(公告)日：2021-04-08
申请号：US16738268
申请日：2020-01-09
Applicant: Wistron NeWeb Corp.
Inventor： Ching-Wen CHEN , Chung-Che LIEN , Meng-Kai WU
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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