Don Borowski wrote: >> Suppose I have a circularly polarized receive antenna immersed in a circularly polarized EM field of x watts per square meter. At the antenna terminals, I receive y watts of power.
Now suppose I put that same antenna in a linearly polarized field of x watts per square meter, coming from the same direction. If I understand things right, at the antenna terminals, I should receive y/2 watts. << Hi, Don, Imagine your circularly polarized antenna were made from two identical, crossed, linearly polarized antennas with a 90 degree phasing line and appropriate matching. In a circularly polarized field, each would receive "x/2" RF power for a total of x. In a linearly polarized field normal to one of them, one would receive a certain amount of power but the other would receive essentially nothing. And there would still re-radiation from the unuseful part. Cortland KA5S - 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/listserv/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
