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A TWT amplifier with a linear power transfer characteristic and improved efficiencyA novel method called "Dynamic Velocity Taper' to linearize the Pout versus Pin transfer characteristic that does not require any extraneous circuitry or tuning, has large bandwidth capabilities ( 10 percent) and offers also an increase in the intrinsic traveling wave tube (TWT) efficiency by 1 to 2 dB is described. In addition, the method permits the TWT to be operated at or near the synchronous voltage (b plus or minus o) which produces a flat small and large signal gain responses and low AM to PM conversion. The physics of the method and experimental verification are given. The implementation should have a significant impact on TWT performance and increase the channel capacity of communication satellites.
Document ID
19840013735
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kosmahl, H. G. (NASA Lewis Research Center Cleveland, OH, United States)
Peterson, J. C. (Hughes Aircraft Co. Torrance, Calif., United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
E-1793
NAS 1.15:83590
NASA-TM-83477
Report Number: E-1793
Report Number: NAS 1.15:83590
Report Number: NASA-TM-83477
Meeting Information
Meeting: Commun. Satellite Systems Conf.
Location: Orlando, FL
Country: United States
Start Date: March 18, 1984
End Date: March 22, 1984
Sponsors: AIAA
Accession Number
84N21803
Funding Number(s)
PROJECT: RTOP 506-62-52
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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