NDLI: Satellite TWT-amplifiers using the microwave power module concept and radiation cooled collectors

Content Provider	IEEE Xplore Digital Library
Author	Kornfeld, G.K.
Copyright Year	1994
Description	Author affiliation: AEG-Daimler Benz Inst., Ulm, Germany (Kornfeld, G.K.)
Abstract	Microwave Power Modules (MPM's) try to make the best use of the high power and high efficiency capability of Travelling Wave Tubes (TWT's) and of the low weight, high gain and excellent signal processing characteristics of the solid state MIC or MMIC Linearizer Front End (LFE) technology. The use of LFE's with satellite TWT's allows one to reduce the tube length and mass by about 30%, resulting in a short or STWT of only 30 dB gain. The mass of the new Ku-band LFE is only 35 g. It has 1.3 W dc power consumption, 20 dBm output power and about 20 dB gain. Compared to standard TWT's, the third order intermodulation distance of the LFE/STWT was improved by about 10 dB in backoff and 2 dB in saturation. The LFE is built in hybrid MIC and MMIC technology. The STWT had 62% efficiency over a 1.8 GHz bandwidth in Ku-band. An extremely light weight Be-Cone radiation cooled collector for TWT's on Direct Broadcasting Satellites (DBS) was developed for further cost savings.<>
Starting Page	787
Ending Page	790
File Size	329309
Page Count	4
File Format	PDF
ISBN	0780321111
ISSN	01631918
DOI	10.1109/IEDM.1994.383306
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-12-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multichip modules Satellite broadcasting Microwave integrated circuits MMICs Gain Signal processing Solid state circuits Microwave technology Energy consumption Power generation
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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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
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