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From: [email protected] [mailto:[email protected]] Sent: Tuesday, July 13, 2004 9:35 AM To: [email protected]; [email protected]; [email protected] Cc: [email protected] Subject: RE: EM Disruption of Automobile Electronics How about 100 kV pumped into a corner reflector with a gain of 10 dB? This will give 5 kV/m at 50 meters. Perhaps this won't break the auto electronics but a continuous pulse stream might cause the electronics to malfunction as long as the pulse stream hits it. Dave Cuthbert Micron Technology One of the more interesting military problems is how to confuse the microprocessor and/or sensors in a smart munition that's about a 100 meters over your head. Nice short pulses are rich in harmonics, and existing electronics can generate well more than 5 kV/M at the target. Target frequencies are well above 10 GHz. A few years back, there was a San Diego company that made some headlines by claiming to have a field-ready EM gun that could be carried (or at least mounted) in a police car. The claim was that they could immobilize the electronic engine control system in newer cars. On looking closer, they were really closer to the proposal stage, and looking for serious development money. They also proposed another system, about the size of a skate-board, which could pursue a fleeing vehicle, slide under it, and somehow immobilize the vehicle with an EM pulse. I think that concept needed a lot more work. They did field a security gate immobilizer, where a small wand arose from the roadway and gave a zap to the underside of the car. This was a direct connection, not an EM weapon, and was suggested for places like border inspection lanes. Haven't heard anything about the company, or the immobilizers, lately. And I haven't seen any little whips sticking up out of the roadway, or any high-speed skate-boards zipping down the freeway. Ed Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. IEEE PSES Main Website: http://www.ieee-pses.org/ To post a message send your e-mail to [email protected] Instructions for use of the list server: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html 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
