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An Introduction to R.T.C.G. Activities

An Introduction to R.T.C.G. Activities. Peter Burton Head of R.T.C.G. Radiocommunications Agency. RTCG in 2002 and beyond… R adio t echnology and C ompatibility G roup. Introduction Resources Recent Projects. RAF Kenley. Originally Aircraft Acceptance park in 1917-18 1919 - RAF Kenley

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An Introduction to R.T.C.G. Activities

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  1. An Introduction toR.T.C.G. Activities Peter BurtonHead of R.T.C.G.Radiocommunications Agency

  2. RTCG in 2002 and beyond…Radiotechnology and Compatibility Group Introduction Resources Recent Projects

  3. RAF Kenley • Originally Aircraft Acceptance park in 1917-18 • 1919 - RAF Kenley • Extensive building 1932-34 • Former Officers Mess • Several famous Hurricane and Spitfire squadrons stationed here during World War 2 • RAF moved out 1978 • Now only gliders

  4. RTCG Whyteleafe • Refurbished as Type Approval Laboratory in 1983 • Brought all individual laboratories together • As TA testing carried out by commercial Test Houses, more opportunity to do compatibility work • Now used as RA’s test facility for compatibility studies

  5. RTCG’s “Mission Statement” • We provide the Agency with a flexible, efficient and competent investigation facility, providing technical solutions to allow other RA Business Units to meet their business needs. • Our mission is to maximise RTCG’s value to the Agency by creating a “centre of excellence culture”; through technical investigation, to help the Agency strengthen its international influence and improve UK radio spectrum utilisation.

  6. What does RTCG do ? • Acts as internal consultancy for RA • Carries out investigations 9kHz to 140GHz • Laboratory work • Field work • Emulations & simulations • Supports RA in managing spectrum

  7. How do we do this - 1 ? • We employ 25 staff • We carry out approx. 60 projects per year • The site covers an area of 23 acres • Open Area Test Site calibrated for 3m, 10m & 30m operation • 2 x H.P. Frequency Agile Signal Simulators • Generation of uniform EM fields up to 30V/m up to 18GHz

  8. How do we do this - 2 ? • “ALTA SPW” terminal for simulating radio systems (UNIX) • “ACOLADE” terminal for simulating radio systems (NT4) • R.F.Screened room (max 6m x 3.6m) • Semi-Anechoic room (6.5m x 6m) • Mobile Measurement Laboratory • Fully Anechoic Chamber earlier this year

  9. Why does RA need us ? • Managing the UK spectrum • International issues • Assessing effect of new services • Dealing with difficult interference cases • Keeping abreast of technology (RA’s “Centre of Excellence”)

  10. How do we relate to other R&D ? • Part of RA’s commitment to research • RTCG <--> Universities/consultants • Our strengths • Our limitations

  11. Modernisation • More flexible working arrangement • “Hot desking” • New benches suited to modern test equipment • Mobile equipment “buggies” • Disposal of redundant environmental test equipment • New staff with specific responsibilities

  12. 509 = Impulsive Interference -> DVB-T • Assess performance of DVB-T receivers when subjected to impulsive interference • C/H thermostats, car ignition systems • Simulate the interference waveforms using FASS • Manufacturer to use our Impulsive Interference model in testing DVB products

  13. 537/612 = xDSL and PLT • Telecommunications Systems Operating over Material Substances, aka - ISDN, xDSL and PLT • O/H drop wires can act as antennas • Unscreened twisted pair cable radiates if poorly balanced • Production/development of MPT1570 specification

  14. 593/627 = Bluetooth Compatibility • Bluetooth - new global interconnectivity radio interface • Operates in 2.4GHz band • Other systems in band - • RFID system • RLANs • Microwave Ovens • Results to CEPT SE24

  15. 566 = Optically Transparent RF Absorbing Structures • Project to design/build RF filters to reduce ISM interference • Work carried out in conjunction with Nottingham Trent University • University build - RTCG measure • Can provide 50dB reduction • May result in new product

  16. 565 = Radiated Signals from Base Stations Local broadcast VHF FM channels Multiple base station sites for GSM 900 Multiple base station sites for PCN 1800 Microwave link stations to feed the above PMR wide area VHF PMR wide area UHF Private VHF paging Private UHF paging Emergency Services - fire, police, ambulance in VHF and UHF Public Utilities - water, electricity and gas JRC bands TETRA services for Dolphin • An example of having the answer before the question has been asked • Measurements at Base Station sites • 3G band (1900 - 1980MHz) • Antenna, filter, measurement receiver • Results presented to ETSI RP11

  17. 542 = Baby Alarm • Complaint from CAA about Interference to aircraft • Original Type Approval sample OK • New Production sample faulty • Production variations

  18. 528 = Rewriting ETR 028 • ETSI Technical Report • Measurement Uncertainty • Measure 1 microvolt but is it? • Calculation of all the errors • Report now published by ETSI RP02

  19. www.radio.gov.uk/topics/research/rtcg

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