Sungkyunkwan University

Samsung Electro-mechanics Co., Ltd.

Yong Serk Kim

Young Sik Hur

Myeong Woo Han

Nam Heung Kim

Keum Cheol Hwang

Jeong Ki Ryoo

Nam Ki Kim

Dae Ki Lim

Jaehoon Jeong

Won Cheol Lee

Seokhwa Kim

Daeguen Choe

Keuntae Lee

An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from a first surface of the ground plane and from each other; a second feed via to provide a second feed path of the second patch antenna pattern, and disposed adjacent to an edge of the second patch antenna pattern; a first feed via to provide a first feed path of the first patch antenna pattern, and disposed adjacent to an edge of the first patch antenna pattern that is opposite to the second patch antenna pattern; a first coupling pattern disposed between the first patch antenna pattern and the second patch antenna pattern along the first direction; a ground via; and a second coupling pattern disposed between the second patch antenna pattern and the first coupling pattern along the first direction.

Antenna apparatus

An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from the ground plane, and spaced apart from each other; a first feed via providing a first feed path of the first patch antenna pattern through a first point disposed adjacent to an edge of the first patch antenna pattern in a direction spaced apart from the second patch antenna pattern; a second feed via providing a second feed path of the second patch antenna pattern through a second point disposed adjacent to an edge of the second patch antenna pattern in a direction spaced apart from the first patch antenna pattern; and a first coupling pattern spaced apart from the first and second patch antenna patterns between the first and second patch antenna patterns, and defining a first internal space exposed towards the first patch antenna pattern.

The present disclosure relates to an indoor device-free human counting method and a system for the method. The present disclosure may estimate the number of humans present on a radio link accurately based on an amount of attenuation of a received radio signal and an amount of change of the received radio signal over time.

Indoor device-free human counting method and system

Growing community of inventors

Suwon-si, South Korea

Yong Serk Kim