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11. Frequency bandwidth
11.1 General limitation
The total bandwidth of an active antenna depends on the bandwidth of its components:
radiating elements ;
modules ;
distributor/consumer.
Generally speaking, it is not very difficult to obtain 10 to 15% of total bandwidth. In addition to the mismatching of radiating elements and distributor components, the reduced efficiency and gain of module amplifiers contribute to a loss of antenna gain compared with its theoretical value of 4πS/ λ 2
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Frequency bandwidth
Bibliography
Articles on antennas and active modules
Organizations
European Space Agency (ESA) http://www.esa.int
Centre National d'Études Spatiales (CNES) http://www.cnes.fr
ONERA http://www.onera.fr
TNO-FEL (Pays-Bas) (Physics...
Suppliers
(non-exhaustive list)
Companies developing technical solutions for active antennas for radar and space communications:
GTDAR (GIEE tri-national GB/F/All)
Thales http://www.thalesgroup.com
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