Antenna Developments - PowerPoint PPT Presentation

niveditha
antenna developments l.
Skip this Video
Loading SlideShow in 5 Seconds..
Antenna Developments PowerPoint Presentation
Download Presentation
Antenna Developments

play fullscreen
1 / 24
Download Presentation
Antenna Developments
452 Views
Download Presentation

Antenna Developments

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Antenna Developments John Thomson Panorama Antennas Ltd © FCS Installers Committee May 2007

  2. © FCS Installers Committee May 2007

  3. © FCS Installers Committee May 2007

  4. Antenna Types • Mobile Radio & Tetra • Permanent - Roof panel mount, glassmount • Temporary – Magnetic or boot clip mount • Covert – bumper mount + internal glass? • Cellular GSM & 3G/UMTS • Internal antennas typically T bar or tax disc • Bumper mount • Glassmount & panel mount occasionaly © FCS Installers Committee May 2007

  5. Automotive EMC Legislation Commission Directive 2004/104/EC ‘12.7. Installation and use of RF transmitters in the vehicle(s), if applicable: Frequency bands, Maximum output power, Antenna position at vehicle, Specific conditions for installation and/or use’ © FCS Installers Committee May 2007

  6. Automotive EMC Legislation • All accessory equipment should have CE or ‘e’ mark approval • UK has “Legacy Equipment” concession!! – this means that used equipment can be re-fitted © FCS Installers Committee May 2007

  7. Automotive EMC Legislation • So what guidelines do vehicle manufactures give? • How easy is it to find? © FCS Installers Committee May 2007

  8. Nissan Motor Co(information from Nissan website) • Mobile Radio Equipment Installation Guidelines • The information in this guideline is intended for use by those installing two-way radio equipment (transmitters and receivers) in vehicles.  This guideline is intended for radio equipment marked with a CE symbol and which has the transmitting antenna installed on the outside of the vehicle. © FCS Installers Committee May 2007

  9. Nissan Motor Co(information from Nissan website) © FCS Installers Committee May 2007

  10. Nissan Motor Co(information from Nissan website) © FCS Installers Committee May 2007

  11. Mercedes Benz(extract from C class user manual) • If you wish to install two-way radios in the vehicle, you must obtain formal approval. Mercedes-Benz approves the installation of two-way radios if such equipment is installed professionally and a low-reflection exterior aerial is used. • The transmission output of the two-way radio must not exceed the maximum transmission outputs listed. (next slide) © FCS Installers Committee May 2007

  12. Mercedes Benz(extract from C class user manual) Frequency range Maximum transmission output • Short wave (< 50 MHz) 100 watts • 4 m waveband 20 watts - 2 m waveband 50 watts • 70 cm waveband 35 watts - 25 cm waveband 10 watts • If electrical or electronic equipment which does not fulfil these conditions is retrofitted, the vehicle's general operating permit may be invalidated (EU Directive 95/54/EC the Automotive EMC Directive). © FCS Installers Committee May 2007

  13. Mercedes Benz(extract from C class user manual) • To ensure optimum reception quality for mobile phones and two-way radios in the vehicle, and to minimise mutual influences between the vehicle electronics and mobile phones/two-way radios, Mercedes-Benz recommends the use of approved exterior aerials. An attached exterior aerial has the effect that the electromagnetic fields transmitted by a wireless device are conducted to the exterior of the vehicle; the field strength within the vehicle interior is lower than in a vehicle that does not have an exterior aerial. © FCS Installers Committee May 2007

  14. Mercedes Benz(extract from C class user manual) • Two-way radios may interfere with the vehicle electronics and thereby jeopardise the operational safety of the vehicle and your own safety if: • they do not have an exterior aerial • the exterior aerial is not a low-reflection aerial • the exterior aerial has been fitted incorrectly © FCS Installers Committee May 2007

  15. Mercedes Benz(extract from C class user manual) • Excessive electromagnetic radiation may also cause damage to your health and the health of others. Using an exterior aerial takes into account current scientific discussions relating to the possible health hazards that may result from electromagnetic fields. • For this reason, only have the exterior aerial fitted at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop. © FCS Installers Committee May 2007

  16. Summary • Clear trend that antenna should be an external type, often a panel mount is specified • Vehicle manufacturers have a responsibility to provide this information • Availability of clear, concise and realistic information differs between manufacturers. • Installers need this information to ensure that the installation is compliant with vehicle EMC specification. © FCS Installers Committee May 2007

  17. TESTINGANTENNA INSTALLATIONS © FCS Installers Committee May 2007

  18. Mobile Radio(66MHz to 472MHz) • Tuneable Antennas • More complex installations • Higher RF power levels • Analogue – simpler test equipment (Bird 43!) • Tetra – installers have access to suitable test equipment (e.g Sitemaster, Bird AT400 etc.) © FCS Installers Committee May 2007

  19. GSM 3G/UMTS(870MHz to 2200MHz) • Broadband antennas • Usually non-tuneable • Often supplied with pre-fitted connector • “Plug and Play” installation • How many VSWR checks are carried out? © FCS Installers Committee May 2007

  20. GSM 3G/UMTS(870MHz to 2200MHz) • Test Equipment availability • Through line type • RF generator type • Cost • Suitability & Accuracy © FCS Installers Committee May 2007

  21. GSM 3G/UMTS(870MHz to 2200MHz) FAT 2700 - range 20MHz to 2.7GHz RF Generator type – suits PMR & GSM/UMTS © FCS Installers Committee May 2007

  22. GSM 3G/UMTS(870MHz to 2200MHz) • Compliance with MPT1362 currently requires the antenna installation to be “VSWR tested” and the value recorded on the job sheet. • Orange does not require their installers to use or even possess a VSWR meter. • These installations cannot be deemed to be in accordance with MPT1362! © FCS Installers Committee May 2007

  23. GSM 3G/UMTS(870MHz to 2200MHz) • Unsatisfactory situation that needs to be addressed • Do we need to deal with the method of antenna installation testing on a two tier mode? i.e PMR & Cellular • Maybe a point for discussion later – certainly needs to be raised to the MPT1362 review committee. © FCS Installers Committee May 2007

  24. Thank You! Acknowledgements Nissan Motors website – fleet services section Mercedes Benz - C class handbook Dave Partridge - Arqiva © FCS Installers Committee May 2007