NDLI: Coupled cavities by rods (TWTs)

Content Provider	IEEE Xplore Digital Library
Author	Busacca, G. Muratore, A. Zanforlin, L.
Copyright Year	1989
Description	Author affiliation: Selenia SpA, Palermo, Italy (Busacca, G.; Muratore, A.)
Abstract	The average power capability of conventional coupled cavity TWTs (traveling-wave tubes) is limited by the maximum amount of heat transfer from the ferrules to the cooling walls. An unconventional structure, allowing a remarkable improvement in the thermal capability of such tubes, is proposed. It operates in the fundamental backward wave mode. The structure uses two conducting rods: one rod connects alternate pole pieces and the other connects the other pole pieces. Heat transfer capability is improved because of the small dimensions of coupling holes compared to the kidney iris. A preliminary thermal analysis showed that the maximum temperature of the ferrules was decreased by 50-70 degrees C against the more conventional structure (X-band 1.5-kW average power TWT). The performance of an eight-cavity experimental structure is in good agreement with the equivalent model studied; 10% bandwidth and 700-W minimum interaction impedance have been obtained.<>
Starting Page	203
Ending Page	206
File Size	264172
Page Count	4
File Format	PDF
ISBN	0780308174
ISSN	01631918
DOI	10.1109/IEDM.1989.74261
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-12-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coupling circuits Impedance Periodic structures Capacitance Heat transfer Structural rods Resonance Resonant frequency Equivalent circuits RLC circuits
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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