NDLI: Shielding requirements for ADE receivers

Content Provider	IEEE Xplore Digital Library
Author	Beresford, R. Bunton, J.
Copyright Year	2013
Description	Author affiliation: Astron. & Space Sci., CSIRO, Marsfield, NSW, Australia (Beresford, R.; Bunton, J.)
Abstract	A single focal plane array receptor element in the ASKAP design enhancement (ADE) receiver system typically has a 40K LNA input noise temperature. For nominal conditions this is amplified by 70dB before RF over single mode fibre transmission to the central building for digitization and digital beam-forming. Shielding requirements for the ADE receivers are determined by three factors, these being unconditional gain stability over the 700MHz to 1800MHz band, very low cross talk between PAF elements and EMC susceptibility issues in the unlikely event a strong transient transmission presents. The crosstalk specification can be related to the phased array co-variance matrix (ACM). Measuring the shielding attenuation performance of very small electronics enclosures and subassemblies is particularly challenging. We use a number of test configurations including RF over fibre to electrically short radiators to replicate in-module emissions and enable realistic estimates of module shielding. This paper will briefly discuss the derivation of the specifications and the empirical techniques used to validate the prototype ADE receiver design.
Starting Page	1
Ending Page	4
File Size	965006
Page Count	4
File Format	PDF
ISBN	9781509018857
DOI	10.1109/APEMC.2013.7360638
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-20
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	ADE Shielding effectiveness Receivers Electromagnetic compatibility RALI ACM Noise measurement RFoF Signal resolution Power measurement ASKAP PAF RFI MMICs Attenuation EMC
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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