NDLI: A miniaturised X-band T/R-module for SAR-systems based on active phased array techniques

Content Provider	IEEE Xplore Digital Library
Author	Ludwig, M. Feldle, H.-P. Ott, H.
Copyright Year	1995
Description	Author affiliation: Daimler-Benz Aerospace AG, Ulm, Germany (Ludwig, M.; Feldle, H.-P.; Ott, H.)
Abstract	For satellite synthetic aperture radar (SAR) based on active phased array technique a Transmit/Receive (T/R) module has been developed. The T/R module operates in X-band and is capable of operating in two orthogonal polarisations alternatively. The T/R module which is described operates from 8 GHz to 10 GHz. It provides 4.0 Watts of output power and has an overall noise figure of about 3.9 dB. For phase setting a 6 bit phase shifter is implemented. The magnitude is controlled by a variable gain amplifier (VGA) with more then 30 dB dynamic range. Especially for space applications low mass is required. Therefore new technologies like multilayer ceramic carrier, highly integrated GaAs microwave monolithic integrated circuits (MMICs) and silicon control circuits in chip form (e.g. ASIC) are used for minimum size (20 mm/spl times/30 mm/spl times/70 mm) and weight of only 67 g.
Starting Page	2063
Ending Page	2065
File Size	732964
Page Count	3
File Format	PDF
ISBN	0780325672
DOI	10.1109/IGARSS.1995.524109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-07-10
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phased arrays Space technology Satellites Synthetic aperture radar Polarization Power generation Power amplifiers Noise figure Phase shifters Gain
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

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