公开(公告)号：US09608705B2

公开(公告)日：2017-03-28

申请号：US14894013

申请日：2014-05-29

申请人： NEC Corporation

发明人： Tsuguo Maru

IPC分类号： H03H7/40 ,  H04B7/0456 ,  H04L5/00

CPC分类号： H04B7/0456 ,  H04L5/0048

摘要： In a MIMO communication system that includes a transmitter and a receiver and forms line-of-sight orthogonal channels between the transmitter-side transmitting antenna and the receiver-side receiving antenna, the MIMO communication system is provided between the transmitting antenna and the receiving antenna with an optimum antenna-to-antenna spacing shortening unit to shorten an optimum antenna-to-antenna spacing by changing the phase rotation of a carrier wave used for directly opposed waves between opposed antennas, and the phase rotation of a carrier wave used for intersecting waves between oblique antennas in such a manner that the amount by which one of the phase rotations changes is different from that by which the other phase rotation changes.

公开(公告)号：US11115102B2

公开(公告)日：2021-09-07

申请号：US16845677

申请日：2020-04-10

申请人： NEC CORPORATION

发明人： Masashi Hirabe ,  Tsuguo Maru

IPC分类号： H04B7/02 ,  H04B7/06 ,  H01Q3/30 ,  H01Q21/20 ,  H04L5/00 ,  H04L5/04

摘要： According to the present invention, when wireless communication is performed, a signal can be formed into a spiral beam (H), the spiral pitch of the signal can be changed, and a plurality of spiral beams (H) with different spiral pitches can be transmitted and received. The present invention pertains to a wireless signal transmitting antenna (10) including a signal emitting means (A) having N number of antenna elements (A1, . . . , AN) (where N is an integer satisfying N≥2) equally spaced on a circumference of circle, and a signal distribution means (B) for generating, from an input first signal (S), N number of second signals (G1, . . . , GN) having a phase difference from one another and outputting the N number of second signals (G1, . . . , GN) to the N number of antenna elements (A1, . . . , AN), respectively, so that a spiral beam (H) with the equiphase surface inclined spirally is output from the signal emitting means (A).

公开(公告)号：US10673511B2

公开(公告)日：2020-06-02

申请号：US16214446

申请日：2018-12-10

申请人： NEC CORPORATION

发明人： Masashi Hirabe ,  Tsuguo Maru

IPC分类号： H04B7/02 ,  H04B7/06 ,  H01Q3/30 ,  H01Q21/20 ,  H04L5/00 ,  H04L5/04

摘要： According to the present invention, when wireless communication is performed, a signal can be formed into a spiral beam (H), the spiral pitch of the signal can be changed, and a plurality of spiral beams (H) with different spiral pitches can be transmitted and received. The present invention pertains to a wireless signal transmitting antenna (10) including a signal emitting means (A) having N number of antenna elements (A1, . . . , AN) (where N is an integer satisfying N≥2) equally spaced on a circumference of circle, and a signal distribution means (B) for generating, from an input first signal (S), N number of second signals (G1, . . . , GN) having a phase difference from one another and outputting the N number of second signals (G1, . . . , GN) to the N number of antenna elements (A1, . . . , AN), respectively, so that a spiral beam (H) with the equiphase surface inclined spirally is output from the signal emitting means (A).

公开(公告)号：US10177829B2

公开(公告)日：2019-01-08

申请号：US15519955

申请日：2014-10-22

申请人： NEC CORPORATION

发明人： Masashi Hirabe ,  Tsuguo Maru

IPC分类号： H04B7/02 ,  H04B7/06 ,  H01Q3/30 ,  H01Q21/20 ,  H04L5/00 ,  H04L5/04

摘要： When wireless communication is performed, a signal can be formed into a spiral beam (H), the spiral pitch of the signal can be changed, and a plurality of spiral beams (H) with different spiral pitches can be transmitted and received. A wireless signal transmitting antenna (10) includes a signal emitting means (A) having N number of antenna elements (A1, . . . , AN) (where N is an integer satisfying N≥2) equally spaced on a circumference of circle, and a signal distribution means (B) for generating, from an input first signal (S), N number of second signals (G1, . . . , GN) having a phase difference from one another and outputting the N number of second signals (G1, . . . , GN) to the N number of antenna elements (A1, . . . , AN), respectively, so that a spiral beam (H) with the equiphase surface inclined spirally is output from the signal emitting means (A).