Ntt Docomo, Inc.

Agc Inc.

Tohoku University

Qiang Chen

Tamami Maruyama

Kunio Sawaya

Qiaowei Yuan

Osamu Kagaya

Toshiki Sayama

Tatsuo Furuno

Jianfeng Li

Yasuhiro Oda

Tomoyuki Ohya

Shinji Uebayashi

Takeshi Motegi

Hiroyasu Sato

Shiwei Qu

Long Li

A wireless communication device includes a base material; a directivity control array and a wiring disposed on the base material, the directivity control array having a plurality of unit elements disposed in a certain two-dimensional pattern, and the wiring connected to a DC power supply to apply a DC voltage to desired unit elements; the wireless communication device further comprising a controller to control the DC voltage to be applied to the desired unit elements.

Wireless communication device

A slot array antenna includes a dielectric layer, a power feeding unit, a first coplanar waveguide formed in a conductor layer provided on one surface of the dielectric layer, and a second coplanar waveguide formed in the conductor layer, wherein each of the first coplanar waveguide and the second coplanar waveguide includes a first end part connected to a point to which the power feeding unit is connected or situated in proximity and at least one second end part connected to at least one slot formed in the conductor layer.

Slot array antenna

A disclosed dual antenna system includes a receiving antenna which includes a first surface orthogonal to an incident wave, the first surface being a first antenna aperture, and a transmitting antenna which includes a second surface parallel to a reflection direction which is a transmission direction, the second surface being a second antenna aperture. A portion of a structure of the transmitting antenna is shared by the receiving antenna.

Dual antenna system

A reflectarray, including: a substrate; and a plurality of patches formed on each of areas into which a principal surface of the substrate is divided, wherein the plurality of patches are formed by including a gap.

Reflectarray

A reflect array () according to the present invention includes a plurality of array elements () forming an array configured to control a direction of a reflected wave (scattered wave) by controlling a phase of the reflected wave; and a ground plane (). The ground plane () has a structure with a frequency selective function.

Reflect array

Growing community of inventors

Sendai, Japan

Qiang Chen