Title :
A phase controlled antenna system for anti-jamming purposes
Author :
Eskelinen, P. ; Piisilä, M. ; Laaksonen, R.
Author_Institution :
Kotka Inst. of Technol., Finland
fDate :
4/1/1996 12:00:00 AM
Abstract :
A phase controlled antenna system has been constructed for aircraft EW purposes. With only two radiating elements conventionally installed on top of the fuselage, the system is capable of introducing a 30 dB radiation pattern minimum to desired or optimized directions. The system uses computer controlled parallel down conversion technique, which gives the freedom to automatically adjust for any anomalies in the respective individual element patterns, normally caused by the airframe structures. The same computer can be used for active search-and-minimize procedures. Extensive tests have been performed with an F-18 scale model to verify the system performance
Keywords :
aircraft communication; electronic countermeasures; jamming; mobile antennas; phase shifters; telecommunication computing; telecommunication control; F-18 scale model; active search-and-minimize procedures; aircraft EW; airframe structures; anomalies; anti-jamming purposes; computer controlled parallel down conversion; optimized directions; phase controlled antenna; radiating elements; radiation pattern; system performance; Aerospace control; Aircraft; Aluminum; Antenna radiation patterns; Automatic control; Control systems; Delay lines; Jamming; Phase shifters; System testing;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
