Radar apparatus
US7525479B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2008 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Jul 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.