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Performance characteristics of the 12 GHz, 200 watt Transmitter Experiment Package for CTSMeasured performance characteristics from ground test of the Transmitter Experiment Package (TEP) for the Communications Technology Satellite are presented. The experiment package consists of a 200 W Output Stage Tube (OST) powered by a Power Processing System (PPS). Descriptions of both the PPS and OST are given. The PPS provides the necessary voltages with a measured dc/dc conversion efficiency of 89 per cent. The OST, a traveling wave tube with multiple collectors, has a saturated rf output power of 224 W and operates at an overall efficiency exceeding 40 per cent over an 85 MHz bandwidth at 12 GHz. OST performance given includes frequency response, saturation characteristics, group delay, AM to PM conversion, intermodulation distortion, and two channel gain suppression. Single and dual channel FM video performance is presented. It was determined that for 12 MHz peak to peak frequency deviation on each channel, dual channel FM television signals can be transmitted through the TEP at 60 W, each channel, with 40 MHz channel spacing (center to center).
Document ID
19760057728
Document Type
Conference Proceedings
Authors
Miller, E. F. (NASA Lewis Research Center Cleveland, OH, United States)
Fiala, J. L. (NASA Lewis Research Center Cleveland, OH, United States)
Hansen, I. G. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
COMMUNICATIONS AND RADAR
Meeting Information
EASCON ''75; Electronics and Aerospace Systems Convention(Washington, DC)
Distribution Limits
Public
Copyright
Other