1. You need to make a far-field measurement For a broadcast antenna pattern, you might well be able to make that measurement in a SAC or FAC, but if the pattern is high gain, and the antenna aperture is large relative to wavelength, then the far field may put you outside of any reasonable indoor facility.
2. You need a turntable. You want a turntable with software control such that you can relate the spectrum analyzer /receiver signal to the turntable position – you are building a polar plot of the antenna pattern. 3. Yes. They’ve changed their name, but in the USA the big name in this line of work was Scientific Atlanta. They built multi-million dollar turnkey antenna sites back when that was serious money. 4. Type “antenna pattern measurement” into Google. You will get responses. The first I found was: http://www.appliedradar.com/Chamber.htm There’s a nice description at: http://www.iet.ntnu.no/courses/ttt4165/AntenneLab/AntPatternMeas.pdf There’s some test equipment at: http://www.hvstech.com/ap.html Ken Javor Phone: (256) 650-5261 _____ From: Grace Lin <[email protected]> List-Post: [email protected] Date: Thu, 20 Dec 2007 07:36:29 -0500 To: <[email protected]> Subject: Antenna Pattern Dear Members, Could you please share your knowledge about antenna pattern measurement? I am asked to look into the capability to perfom this measurement. My questions are: 1. Is there any particular site/chamber requriement, such as a full anechoic chamber, etc.? 2. Is any particular instrument required in addtion to a spectrum analyzer/receiver and antennas for radiated emission measurement per FCC Part 15? 3. Is software/firmware available for antenna pattern measurement? 4. How to look for the labs that provide services for this measurement? Thank you and look forward to hearing from you. Best regards, Grace - ---------------------------------------------------------------- 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 - ---------------------------------------------------------------- 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
