Title:
レーダ装置
Document Type and Number:
Japanese Patent JP4844566
Kind Code:
B2
Abstract:
An array antenna includes a first end portion that has a first plurality of antennas arranged with a spacing d therebetween and a second end portion that has a second plurality of antennas arranged with the spacing d therebetween. In the array antenna, a spacing between respective antennas in both the first and second end portions and are closest to a central portion is set to 2d, which is a value obtained from multiplying 2, which is the number of the antennas constituting each of both end portions, by the spacing d for both end portions. The antennas in the antenna array are continuously selected as a transmitting antenna by switching, and continuously emit transmission signals. The antennas in the antenna array are also successively selected as a receiving antenna by switching. In this way, by switching between transmission and reception of the antennas of the antenna array, nine reception channels CH1 through CH9 that are arranged with a uniform phase difference therebetween are obtained.
Inventors:
Tomohiro Nagai
Application Number:
JP2007554835A
Publication Date:
December 28, 2011
Filing Date:
December 21, 2006
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G01S7/02; G01S13/34; G01S13/931
Domestic Patent References:
| JP2005003393A | 2005-01-06 | |||
| JP2006003303A | 2006-01-05 | |||
| JP2005257384A | 2005-09-22 | |||
| JP2004245602A | 2004-09-02 | |||
| JP2003315447A | 2003-11-06 |
Attorney, Agent or Firm:
Kaede International Patent Office
Hisao Komori
Hisao Komori