Smart Radar System, Inc.

Gammanu Co., Ltd.

Gamma Nu, Inc.

Kyoung Sub Oh

Sang Jin Kim

Yong Jae Kim

Jae Yong Lee

Sinelnikov Yury

Sang Gi Kim

Hong Ki Choi

Ju Yeol Baek

Disclosed herein is a radar device. The radar device can implement a virtual antenna with high spatial resolution having a two-dimensional (2D) distribution of received beams using a plurality of transmitting and a plurality of receiving antennas.

Radar device

The present invention relates to a base station antenna comprising: a reflective plate; at least one first band radiation element positioned on the upper surface of the reflective plate, including a first power feed unit, and having a first wavelength (&#x3bb;); and at least one second band radiation element positioned on the upper surface of the reflective plate, including a second power feed unit, and having a second wavelength (&#x3bb;), wherein the first power feed unit is connected to a power feed line on the lower surface of the reflective plate, and the power feed line is shorted with the reflective plate at a short point spaced apart at a preset interval from the first band radiation element.

Multiband base station antenna

A multi-port phase shifter includes a ground, a first line on one surface of the ground, a second line on the other surface of the ground, a third line spaced at a predetermined distance from the upper surface of the first line and facing a part of the first line, and a fourth line spaced at a predetermined distance from the upper surface of the second line and facing a part of the second line. A via hole penetrates the ground. A power supply line on the one surface of the ground includes a region having the via hole. Multiple ports make the phase shifter applicable to a sector antenna for obtaining a high gain. Phase shifter volume can be reduced by implementing multiple ports in one phase shifter without coupling two or more phase shifters, thereby eliminating an additional component such as a fixing pole or a connecting pole.

Multi-port phase shifter with multiple lines formed on opposite surfaces of a ground

Growing community of inventors

Hwaseong-si, South Korea

Kyoung Sub Oh