Title :
Wideband communication satellite payload architecture
Author_Institution :
Orbital Sci. Corp., Dulles, VA, USA
Abstract :
Most communication satellite transponders employ the channelized approach, in which the allocated frequency band is subdivided into narrow band channels (transponders). Each channel is amplified individually by a power amplifier, then the amplified channels are re-combined (multiplexed) and transmitted. This architecture has been adopted primarily to enable the most efficient power utilization of the transmit amplifiers by driving them near saturation to achieve the highest possible DC to RF efficiency.
Keywords :
amplification; frequency allocation; multiplexing; power amplifiers; satellite communication; telecommunication channels; transponders; communication satellite transponders; frequency band allocation; narrow band channels; power amplifier; power utilization; transmit amplifiers; wideband communication satellite payload architecture; Bandwidth; Computer architecture; Payloads; Radio frequency; Satellite broadcasting; Satellites; Transponders; Communication satellite; power amplifiers; satellite architecture; wideband system;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972991
