RF propagation in different environments is being studied at NIST in Boulder Colorado. One scientist involved in this is a Dr Chris Holloway. I am sure he can answer all your questions.
Best Regards Charles Grasso Senior Compliance Engineer Echostar Communications Corp. Tel: 303-706-5467 Fax: 303-799-6222 Cell: 303-204-2974 Email: [email protected]; Email Alternate: [email protected] From: Robert Johnson [mailto:[email protected]] Sent: Tuesday, March 30, 2004 8:38 AM To: [email protected] Subject: Wi-Fi propagation Do some of you have a good feel for the propagation characteristics of 2.5 and 5 GHz radiation? I am curious about how they interact with typical environmental materials like walls, earth, furniture, plumbing, wiring, foliage, etc. What materials are transparent, reflective, attenuating? Is attenuation related mostly to water content? I have a good feel for these characteristics with regard to light, sound and TV, but I'm unfamiliar with GHertz frequencies. For example, TV/FM is very sensitive to reflections from nearby wiring and people and reacts strongly to movements of a few inches. I would expect WiFi to be similarly sensitive to small metal surfaces like nearby office furniture or appliances rather than wires and to very small movements. Bob Johnson ITE Safety This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
