NDLI: Phase velocity taper design algorithms for optimizing broadband power and efficiency in coupled-cavity TWTs

Content Provider	IEEE Xplore Digital Library
Author	Wilson, J.D.
Copyright Year	2000
Description	Author affiliation: NASA Glenn Res. Center, Cleveland, OH, USA (Wilson, J.D.)
Abstract	The output circuit section of a traveling-wave tube (TWT) routinely contains an RF phase velocity taper in order to increase RF output power and efficiency. By slowing the phase velocity in approximate synchronism with the decelerating electron beam bunches, the taper increases power transfer from the beam to the RF wave. Recently, a phase velocity taper design algorithm based on the computational optimization technique of simulated annealing was developed and implemented into the NASA multi-dimensional large-signal coupled-cavity TWT computer model. The design algorithm was applied to the Hughes 961HA 59-64 GHz 75-Watt coupled-cavity TWT and the resulting simulated annealing taper provided a very significant increase in the computed RF output power and efficiency at center frequency. This paper describes an improved single frequency simulated annealing algorithm and two new broadband algorithms developed to design phase velocity tapers for optimizing RF efficiency and power over a frequency range.
File Size	138107
File Format	PDF
ISBN	0780359879
DOI	10.1109/OVE:EC.2000.847430
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-05-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Design optimization Radio frequency Computational modeling Simulated annealing Power generation Circuits Frequency synchronization Electron beams Computer simulation
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in