Pilotprojekt Satellitenkommunikation: Hochleistungshalbleiterverstaerker fuer das Ku-Band Abschlussbericht

The Solid State Power Amplifiers (SSPA) are designed for modern Very Small Aperture Terminals (VSAT), a part of Ku- Band satellite communication links. The applications are satellite communication in the SCPC operation or in the terrestric point to point microwave links. the amplifier are manufactured in the SMD one board technology of micro galssfibre-teflonsubstrat (d=0,25 mm) with backside copper thick metal cladding (d=3,2 mm). Trough the use by high integrated activ components (GaAs FET-MMIC, matched power GaAs-FET's) in the copper ceramic case are realised reliable and service friendly amplifiers in slime line case with optimal heath transfer. Good electrical features for the VSAT operation, as stability the linear gain of change the temperature and frequency are achieved through temperature componsed and straight frequency locked loop. The extern (remote control) power adjustment allowed adaption on different data rates. Further features to monitoring and remote control make possible to install in modern VSAT-Transceiver, a principal circuit are designed for worldwide satellite systems. Six pieces prototypes 1/2/4W are manufactured, the production for VSAT Systemintegrators are strived, customer solutions are possible. The marketing of the single component 'Solid State Power Amplifier' is very difficult for reason do dominant foreign companys. A completely terminal has biger market chances, however are the financial expenses a problem for little companys. (orig.)SIGLEAvailable from TIB Hannover: F97B448+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany); Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA) GmbH, Bonn (Germany)DEGerman