Title:
An antenna system and an antenna excitation method
Document Type and Number:
Japanese Patent JP6239161
Kind Code:
B2
Abstract:
Disclosed is an antenna device in which an excitation phase changing unit (4) for changing the excitation phases of element antennas (2-1 n ) to (2-8 n ) by controlling phase shifters (3-1 n ) to (3-8 n ) dependently on preset phase values is disposed, and every time the excitation phases are changed by the excitation phase changing unit (4), a radiation pattern forming unit (12) shifts the phases of a sum signal and a difference signal, and forms a monopulse sum pattern by time-integrating the sum signal after phase shift and also forms a monopulse difference pattern by time-integrating the difference signal after phase shift.
Inventors:
Matsuki Makoto
Kihira Kazunari
Masataka Otsuka
Kihira Kazunari
Masataka Otsuka
Application Number:
JP2016573351A
Publication Date:
November 29, 2017
Filing Date:
February 01, 2016
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H01Q25/02; G01S7/02; G01S13/44; H01Q3/30
Domestic Patent References:
| JP2012175469A | ||||
| JP11027043A | ||||
| JP64023183A |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue
Hamada Hatsune
Nakashima Shigeru
Tatsuya Sakamoto
Tsujioka Masaaki
Kazuma Inoue
Previous Patent: Train position detecting device
Next Patent: POSITIONING METHOD BY DISPLACEMENT SENSOR
Next Patent: POSITIONING METHOD BY DISPLACEMENT SENSOR