Stephen:
There are a number of ways to measure gain, with the basic one being a comparison to a theoretical isotropic radiator (yielding a gain number in dBi). However, the antennas used for EMI and compliance testing are usually used in the near field, where the standard you are testing to defines the acceptable measurement distance and styles of antennas. Thus, there is often a preferred gain measurement technique defined by the standard you are working to. In regard to what you told us, what is 2D & 3D (dimension) gain? And what is peak gain? What standard is defining these terms? Ed Price WB6WSN Chula Vista, CA USA From: Stephen Whalen [mailto:[email protected]] Sent: Friday, July 01, 2016 8:01 AM To: [email protected] Subject: [PSES] Antenna gain measurement standard Greetings, Does anyone know which standard is used for measuring antenna gain? Are 3D antenna gain measurements typically different than 2D with regards to peak gain? If so, what's typical delta, 0.5dB or less? Regards, Stephen - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) <http://www.ieee-pses.org/list.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]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
