Title :
The 14/12 GHz Communications Transponder of the Communications Technology Satellite
Author :
Braun, L.D. ; Donovan, M. V O´
Author_Institution :
Consultant Engineer, Communications Technology Satellite Project, Communications Research Centre, Box 490, Station "A", Ottawa K1N 8T5, Canada.
Abstract :
The Communications Transponder of the Communications Technology Satellite incorporates a number of advanced-technology units designed to provide a reliable, high-power, microwave communications capability at 14/12 GHz for experimental purposes. The advanced-technology units discussed include a 14 GHz Parametric Amplifier, 12 GHz Field-Effect Transistor Amplifiers, Graphite-Fibre/Epoxy Composite Filters, Low-loss Isolators, 20 Watt Travelling Wave Tube Amplifiers and a 200 Watt, 12 GHz Travelling Wave Tube Amplifier having an efficiency of 50 percent. The principal features of the transponder design are discussed as well as the characteristics of the units presently being integrated into the engineering model transponder.
Keywords :
Artificial satellites; Communications technology; Frequency; Microwave antennas; Microwave communication; Multiplexing; Power amplifiers; Receiving antennas; Satellite antennas; Transponders;
Conference_Titel :
Microwave Conference, 1974. 4th European
Conference_Location :
Montreux, Switzerland
DOI :
10.1109/EUMA.1974.331984
