Integrated Defense Communications System Antijamming Antenna System.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Pagination or Media Count:
Isolation of mainbeam and sidelobe jamming signals from the desired signal being relayed by microwave communication links is accomplished by an antijamming antenna comprising a flat radome, a curved reflector and a transmit dipole. Positioned adjacent the dipole is a monopulse feed and comparator for main-beam jammers dual-plane monopulse, multi-mode multilayer feed. Also forming part of the integrated antenna are auxiliary units for near sidelobe and far sidelobe jammers. Since the direction of the desired incoming signal in microwave communication links is precisely known, the antijamming antenna uses azimuth and elevation monopulse to make a spatial distinction between the desired incoming signal and the jamming signals. The antijamming antenna system outputs a sum, azimuth difference elevation difference signals and isolated near sidelobe jamming signals and far sidelobe jamming signals on output ports which allow an adaptive processor to place pattern nulls on jammers located in the mainbeam and sidelobe region of the antenna.
- *MONOPULSE RADAR
- *MICROWAVE COMMUNICATIONS
- *ADAPTIVE SYSTEMS
- *PROCESSING EQUIPMENT
- INTEGRATED SYSTEMS
- DATA LINKS
- Radiofrequency Wave Propagation