Wideband interference suppressor in a phased array radar
US5592178A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1994 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Jun 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A phased array radar antenna uses time-steering subarray notch weightings to produce a wideband notch in the direction of interference for Electronic-Counter-Measure (ECM) interference suppression. A predetermined set of subarray notch weightings, each set being identical for each subarray, is stored in controllers each of which is coupled to a plurality of phase shifters and attenuators for feeding radiating elements of the antenna. Interference suppressors operate from a plurality of controllers to produce a subarray pattern having a notch in the direction of interference. Beamformers then combine outputs of all time-steering subarrays in the antenna so as to produce an antenna pattern having a wideband notch in the direction of interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.