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Cumulative effect of radiated emissions from metallic data distribution systems on radio based services

A report for the Radiocommunications Agency by York EMC Services Ltd, University of York

Authors: Dr. D W Welsh, Dr. I D Flintoft, Dr. A D Papatsoris

Summary

Recent developments in broadband data access methods over existing telephone or mains wiring will cause unintentional RF emissions which may adversely affect the established radio noise floor. This report considers the effects due to cumulative propagation of many such sources on the established radio noise floor. It does not consider possible interference due to near field effects. The propagation mechanisms considered are groundwave and skywave. The figure shows the technologies, propagation methods and frequencies that have been considered.

Overlaps between frequency bands, propagation methods and data distribution technologies

Figure: Showing frequency bands, propagation methods and major technologies considered in this report

Downloads:

Format Document
PDF Report (1.56 MB)
Word DOC User manual for the active Excel spreadsheet used to calculate cumulative groundwave emissions from the deployment of xDSL services. (34 kB)
Excel XLS ADSL spreadsheet (197 kB)
Excel XLS VDSL spreadsheet (144 kB)
Powerpoint PPT Presentation (1.29 MB)
Word DOC Report - Extension To Contract "Accumulated Emissions From Metallic Data Delivery Systems" To Verify The Angle Of Radiation Of ADSL Systems And Their Potential Effect On Aeronautical Services (697 kB)

Last Updated: 2006-Feb-01

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