Array antenna and stabilized antenna system
US5223845A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An array antenna can control directions of beams by phase-shifting signals received and/or transmitted by a plurality of antenna elements. When the antenna elements are arranged two-dimensionally, sidelobes and beamwidth are determined according a distance between two adjacent antenna element columns. The distance between the adjacent columns can be reduced by arranging the antenna elements in a staggered manner, thereby suppressing the sidelobes, and enlarging the width of beams around an XEL axis. A stabilized antenna system controls the direction of the array antenna and beam directivity by compensating for inclination of a moving platform, so that the array antenna can always track a satellite reliably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.