Dear Forum Colleagues, I have been doing inductive loop systems for awhile and find myself a bit rusty on antenna theory.
Given that an antenna of interest is a 900 MHz, circular polarized patch antenna, we need to determine the gain of that antenna for FCC purposes. If we use 2 antennas of our design, and the other an arbitrary antenna, will the 3 antenna substitution method give a reasonably accurate indication of gain? The arbitrary antenna could be a circular polarized antenna, a horn antenna, a coat hanger or a dog ( :-) )....does the type of antenna used for the 3rd antenna matter for the 3 antenna method to establish the gain of the test item antennas?? Don Umbdenstock Manager Compliance Engineering Tyco Safety Products / Sensormatic 6600 Congress Avenue Boca Raton, FL 33487 USA Phone: 561.912.6440 <mailto:[email protected]> [email protected] - ---------------------------------------------------------------- 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
