公开(公告)号：US20210028838A1

公开(公告)日：2021-01-28

申请号：US17042344

申请日：2019-02-18

Applicant: NEC CORPORATION

Inventor： Yoshihide TAKAHASHI

IPC: H04B7/06 ,  H04B17/318

Abstract: An object is to provide an antenna system, a control method of an antenna system, and program capable of maintaining communication quality even when communication state between wireless communication apparatuses is changed. Detection antennas are arranged in a Z-direction to respectively correspond to radiation antennas and receive radio waves. A combiner/divider circuit (13) distributes a transmission signal to the radiation antennas. A detection circuit detects reception sensitivity distribution of the detection antennas in the Z-direction. A control circuit controls the combiner/divider circuit based on the reception sensitivity distribution to cause the radiation antennas corresponding to the detection antenna having reception sensitivity higher than a predetermined value to radiate the radio wave.

公开(公告)号：US20210210864A1

公开(公告)日：2021-07-08

申请号：US17042546

申请日：2019-02-06

Applicant: NEC Corporation

Inventor： Yoshihide TAKAHASHI

IPC: H01Q21/00 ,  H01P5/107 ,  H01Q13/10

Abstract: A radio communication apparatus includes a printed board, an RF circuit formed on one surface of the printed board and configured to generate an RF signal, a first transmission line configured to transmit the RF signal, a second transmission line configured to transmit a signal different from the RF signal, and an antenna formed on another surface of the printed board and configured to emit the RF signal. The antenna includes a plurality of dielectric substrates layered on the other surface of the printed board, a metal film formed on surfaces of the plurality of dielectric substrates, and a through hole formed in at least the dielectric substrate adjacent to the printed board. The first transmission line is disposed on the one surface of the printed board, and a part of the second transmission line is disposed between any of the plurality of layered dielectric substrates.

公开(公告)号：US20190089035A1

公开(公告)日：2019-03-21

申请号：US16088292

申请日：2017-02-09

Applicant: NEC Corporation

Inventor： Yoshihide TAKAHASHI

IPC: H01P3/123 ,  H01P11/00 ,  H01Q21/00

CPC classification number: H01P3/123 ,  H01P5/19 ,  H01P11/002 ,  H01Q21/0006 ,  H01Q21/0037

Abstract: A ridge waveguide (10) according to the present invention includes a ridge part (11), the ridge part (11) being in contact with both a side (14) in a long-side direction and a side (15) in a short-side direction in a cross-sectional shape of the ridge waveguide. Further, an array antenna apparatus according to the present invention includes a feeder circuit formed by a ridge waveguide (10) including a ridge part (11), the ridge part (11) being in contact with both a side (14) in a long-side direction and a side (15) in a short-side direction in a cross-sectional shape of the ridge waveguide. In this way, it is possible to provide a ridge waveguide that can be easily manufactured.

公开(公告)号：US20180212329A1

公开(公告)日：2018-07-26

申请号：US15746491

申请日：2016-07-28

Applicant: NEC CORPORATION

Inventor： Yoshihide TAKAHASHI

IPC: H01Q9/28 ,  H01Q21/08 ,  H01Q1/24

CPC classification number: H01Q9/28 ,  H01Q1/246 ,  H01Q9/40 ,  H01Q21/08

Abstract: First and second radiation elements are arranged on a first face in a Z axis direction. A third radiation element is formed on a second face to be interposed between the first and second radiation elements. A fourth radiation element is formed on the second face to be interposed between the first and second radiation elements. A micro strip line connects the first radiation element and the second radiation element and is formed on the first face to extend in the Z axis direction. A first element connection part is formed on the second face to overlap with the micro strip line in a Y axis direction, and to have a width wider than that of the micro strip line. A feeding unit connects a coaxial cable supplying power from the outside to the micro strip line and the fourth radiation element.

公开(公告)号：US20210391652A1

公开(公告)日：2021-12-16

申请号：US17417483

申请日：2019-11-15

Applicant: NEC Corporation

Inventor： Yoshihide TAKAHASHI

IPC: H01Q13/18 ,  H01Q21/06 ,  H01Q23/00

Abstract: A radio communication apparatus includes an RF circuit formed on one surface of a printed board and configured to generate an RF signal, a transmission line configured to transmit the RF signal, a transmission line configured to transmit a signal different from the RF signal, a ground layer formed on another surface of the printed board, an antenna element configured to emit the RF signal supplied from the RF circuit through the transmission line, and a connection layer configured to bond together the antenna element and the ground layer. The antenna element includes a plurality of layered dielectric substrates, a metal film formed on surfaces of them, and a through hole formed to penetrate the dielectric substrate closest to the printed board. A part of the transmission line is disposed between any of the plurality of layered dielectric substrates.

公开(公告)号：US20170040708A1

公开(公告)日：2017-02-09

申请号：US15303854

申请日：2015-03-13

Applicant: NEC Corporation

Inventor： Yoshihide TAKAHASHI

IPC: H01Q15/24 ,  H01Q3/06 ,  H01Q1/20 ,  H01P1/165 ,  H01Q1/24

CPC classification number: H01Q15/246 ,  H01P1/165 ,  H01P5/04 ,  H01Q1/20 ,  H01Q1/24 ,  H01Q1/246 ,  H01Q3/06

Abstract: A radio system includes: a radio device; an antenna device; and a polarization converting circuit for changing the directions of polarized waves, inserted at a position between the radio device and the antenna device. The polarization converting circuit is installed inside a holder in a device interface portion, and the device interface portion has a through hole that penetrates from the outer wall of the device interface portion to the outer periphery of the polarization converting circuit and is used to confirm the rotating angle of the polarization converting circuit inside the holder.

Abstract translation: 无线电系统包括：无线电设备; 天线装置; 以及偏振转换电路，用于改变插入在无线电设备和天线装置之间的位置处的极化波的方向。 偏振转换电路安装在器件接口部分的保持器的内部，器件接口部分具有从器件接口部分的外壁穿透到偏振转换电路的外周的通孔，并用于确认 保持器内的偏振转换电路的旋转角度。

公开(公告)号：US20150357719A1

公开(公告)日：2015-12-10

申请号：US14655945

申请日：2013-07-17

Applicant: NEC CORPORATION

Inventor： Yoshihide TAKAHASHI

IPC: H01Q19/19 ,  H01Q13/02

CPC classification number: H01Q19/192 ,  H01Q1/1228 ,  H01Q13/02 ,  H01Q19/191

Abstract: An antenna device capable of performing precise positioning by using a small number of components and having a low side-lobe characteristic is provided. An antenna device includes a primary radiator (3), a main-reflector (2), a sub-reflector (5), and a holding section (4) that fixedly maintains relative positions and directions of the sub-reflector (5) and the main-reflector (2). The holding section (4) includes a side part (42) in an integrated manner, the side part (42) being configured to enclose at least a part of a radio-wave path extending from the primary radiator (3) to the sub-reflector (5) as a shroud.

Abstract translation: 提供能够通过使用少量部件并具有低旁瓣特性来执行精确定位的天线装置。 天线装置包括主辐射器（3），主反射器（2），副反射器（5）和固定维持副反射器（5）的相对位置和方向的保持部分（4） 主反射器（2）。 所述保持部（4）以一体的方式包括侧部（42），所述侧部（42）构成为将从所述主辐射体（3）延伸到所述副辐射体（3）的至少一部分无线电波路径包围， 反射器（5）作为护罩。