Hi James,
You can try putting the support access point down on the floor, outside the beam of your site's measurement antenna. Covering it with a little spare anechoic material helps too. If you're just worried about the main fundamental signal (2.4 GHz, etc.) from your support access point, you can ensure the antenna from it is not in line with your site's measuring antenna. If possible, you could even remove the support access point's regular (omni) antenna and fit a more directional horn to it. This would allow you to point the support access point's antenna at your 'EUT' and not at your site's receiving antenna. If you're worried about the general broader emissions from your supporting access point, and if the floor location with anechoic tent isn't helping, maybe you could locate it outside your chamber and have an RF cable through a waveguide to the supporting access point antenna. I hope this helps a little. Michael. Michael Derby Regulatory Engineer ACB Europe From: Pawson, James [mailto:james.paw...@echostar.com] Sent: 10 January 2012 16:13 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Radiated Emissions Testing of Intentional Radiators - Practicalities? Hello list members, We are wanting to test one of our products, which contains a WiFi interface, in our anechoic chamber. To ensure the WiFi is active we would need to set up antennae in the anechoic chamber itself - the irony of introducing radio into a radio-quiet environment is not lost on me. I'm concerned about separating out the emissions from the WiFi access point and the emissions of the equipment under test. Does anyone have any practical pointers / hints / tips / experience / pitfalls of doing this? Thanks in advance James James Pawson Leading Hardware Engineer - EMC EchoStar Europe - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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://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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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://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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
