NDLI: A 500 watt CW, PPM, X-band TWT for ECM and communications application

Content Provider	IEEE Xplore Digital Library
Author	Espinosa, R.J.
Copyright Year	1969
Description	Author affiliation: Watkins-Johnson Company, Palo Alto, Calif. (Espinosa, R.J.)
Abstract	The design and performance of a PPM focused TWT which has produced over 500 watts of CW power across the octave frequency band from 5.2 to 10.4 GHz is presented. This performance represents an advance of about 3 dB in the state-of-the-art microwave power generation in octave bandwidth TWT's. A helix interaction circuit is used to obtain bandwidth operation. This, together with the rugged mechanical design of the TWT, make it suited for use in Airborne ECM equipment. It is focused with an axially magnetized integral pole piece PPM focusing using Alnico 8 magnets. The configuration of the focusing structure has been modified from the conventional in order to facilitate removal of heat from the helix. Cooling of the TWT can be accomplished with either forced air, circulated liquid, or conduction to the mounting plate.
Starting Page	28
Ending Page	30
File Size	177606
Page Count	3
File Format	PDF
DOI	10.1109/IEDM.1969.188093
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1969-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrochemical machining Bandwidth Microwave communication Frequency Microwave devices Electromagnetic heating Power generation Circuits Magnets Cooling
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