Beam scanning antennas with plurality of antenna elements for scanning beam direction
US6184828A · kind A · utility
293Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Aug 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/065
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An array antenna is formed of a plurality of antenna elements, each of which scans a beam in the direction of an angle .theta. to a boresight of the antenna and electrically varies the direction of a rotation angle .phi. of the beam. The antenna elements are disposed so that the optical path difference of radio waves transmitted or received by two adjacent antenna elements in the directions of a plurality of direction angles .phi. on the plane tilted for an angle .theta. to the boresight of the antenna is nearly a multiple of the wave length of the radio waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.