Nissha Co., Ltd.

Inu Research & Business Foundation

Electronics and Telecommunications Research Institute

Sungtek Kahng

Ryomei Omote

Yoshihiro Sakata

Toshifumi Kurosaki

Shohei Morimoto

In Yeol Moon

Changhyeong Lee

Yejune Seo

Jae-Ick Choi

Dong-Ho Kim

Geonho Jang

Gwang-gyun Namgung

Munsu Jeon

An antenna device suppresses reflection of electromagnetic waves from a human body or other conductors, which causes the electromagnetic waves to be sufficiently emitted in a target direction. The antenna device includes an antenna pattern and a metasurface layer. The metasurface layer is a layer that is layered on the antenna pattern and disposed on the human body side. The metasurface layer includes a first low-loss film and a second low-loss film. A first metasurface is formed on the first low-loss film. A second metasurface is formed on the second low-loss firm.

Antenna device

A decrease in performance of an antenna is suppressed while maintaining metallic design by a metal vapor deposition layer in a cover with antenna function. A back cover includes cover member, a pictorial pattern layer, and a metasurface. The pictorial pattern layer is arranged in a layering direction with respect to the cover member and includes a metal vapor deposition layer. The metasurface is arranged side by side in the layering direction with the pictorial pattern layer. The metasurface amplifies an antenna signal.

Cover with antenna function

A CRLH resonator-based band-pass filter includes at least two CRLH resonators. The resonators are connected by capacitive coupling. The resonators includes a microstrip line having input and output ports. The microstrip line includes a first interdigital line serial-connected to the input port, a second interdigital line serial-connected to the output port, a connection line connecting the first and second interdigital lines, and an inductor line parallel-connected to the connection line and provided with a grounded end.

Band-pass filter based on CRLH resonator and duplexer using the same

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Seoul, South Korea

Sungtek Kahng