Phased array antenna arrangement with filtering to reduce grating lobes
US4259674A · kind A · utility
22Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Oct 24, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q17/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for reducing the grating lobes associated with phased array antenna arrangements. The present invention, which may be employed with any phased array antenna arrangement, consists of disposing a filtering means capable of blocking the grating lobes at any real focal point in the focal plane of the antenna arrangement. The size of the central region of the filter is determined by the desired field of view at the far-field, and may be adjusted so as to reduce the grating lobes to an admissible level with minimal gain degradation of the main beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.