Wistron Neweb Corporation

Mei Tien

Liang-Kai Chen

Chih-Chun Peng

Chin-Shih Lu

Wei-Hung Liu

A loop antenna is provided, which includes a first loop section, a second loop section and a third loop section. The first loop section surrounds and defines an empty area. The second loop section surrounds and connects the first loop section, and an annular groove is formed between the first loop section and the second loop section. The third loop section surrounds and connects the second loop section. The width of a gap between the third loop section and the second loop section is smaller than the width of the annular groove.

Loop antenna

A transmission device for a near field communication (NFC) device includes a matching circuit, a connecting interface with a first width for connecting an operating circuit of the NFC device, a first transmission line electrically connected between an antenna of the NFC device and the matching circuit, and a second transmission line electrically connected between connecting interface and the matching circuit, including an increasing width portion and a constant width portion, wherein a width of the second transmission increases from the first width to a second width within the increasing width portion and keeps the second width within the constant width portion, wherein the second width is greater than and related to the first width.

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Hsinchu, Taiwan

Mei Tien