NDLI: Design and Development of a Novel, Compact, and Light-Weight Multistage Depressed Collector for Space TWTs

Content Provider	IEEE Xplore Digital Library
Author	Latha, A.M. Ghosh, S.K.
Copyright Year	1963
Abstract	Space traveling wave tubes (TWTs), which are used in satellite communications, need to be compact and light weight, and have high overall efficiency. In a typical TWT, ~45% of the weight is due to the collector, which is normally made bulkier to dissipate the waste heat. Hence, reduction in size and weight of the collector will lead to huge savings in the weight of the entire TWT, thereby impacting significantly on the launch cost of the satellite. However, reduction in size and weight of the collector has several associated bottlenecks and challenges. Here, we have successfully addressed those challenges and have developed a novel, compact, and light-weight multistage depressed collector (MDC). The novelty of the MDC is in the shape of the electrodes, which has been modified to have internal corrugations. Due to this geometry modification, the MDC offers ~76% weight reduction that, in turn, translates into -35% weight reduction of the TWT, which greatly impacts the launch cost of the communication satellite. Furthermore, no deterioration in electrical and thermal performance has been observed in this compact MDC design.
Sponsorship	IEEE Electron Devices Society
Starting Page	481
Ending Page	485
Page Count	5
File Size	1504426
File Format	PDF
ISSN	00189383
Volume Number	63
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron tubes Electrodes Geometry Electric breakdown Solid modeling Satellite communication Microwave communication weight reduction. Communication satellites compact multistage depressed collector (MDC) launch cost MDC size reduction space traveling wave tubes (TWTs) weight reduction
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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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
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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