All, Power Required dBW=Field required dBV/m - Antenna Gain - 14.77 + Cable Loss dB +20*log(Distance [m]) add a bit for VSWR for ALL the interconnects. If you are lucky the answer should be between 100 and 200 W but you will need an antenna gain of 10dB or more at 1GHz Regards Tim 6239 desk A1N21 P Please consider the environment before printing this email.
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Derek Walton Sent: Tuesday, December 11, 2007 2:22 PM To: IEEE EMC Discussion Group Subject: 200 v/m power needed *** WARNING *** This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. Morning all. I'm trying to do a sanity check here determining how much power I need to generate 200 v/m over a ground plane using the typical 1 to 18 DRWG horn antenna. ETS used to have a typical field strength Vs forward power chart on their site: it seems to have gone. Does anyone have typical curves they can share? Off line is fine. Thanks, in advance, Derek Walton L F Research. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
