Scott, You might also like to consider the conducted emissions from the "dock" into the "phone" on the interface. I have come across a problem where a digital interface to a radio transceiver directly interfered with the receiver when connected. These "emissions" did not show in a radiated emission test and since the "dock" directly connected to the back of the transceiver, no conducted emission tests were (could?) be done.
If the receive frequency or something close, or even the I.F. frequency is injected from the dock into the phone then it may reduce the effective sensitivity and hence block all but the strongest of base-stations. I hope I have explained this adequately. Regards Tim ************************ Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG ( Tel : +44 (0)1582 886239 7 Fax : +44 (0)1582 795863 ) Mob : +44 (0)7703 559 310 * E-mail : [email protected] P Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman From: [email protected] [mailto:[email protected]] On Behalf Of Scott Douglas Sent: 02 September 2009 07:13 To: 'EMC PSTC' Subject: iPhone Radiation Pattern *** WARNING *** This message has originated outside your organisation, either from an external partner or the Global Internet. Keep this in mind if you answer this message. Can anyone tell me where I can find out the antenna location, orientation, and radiation pattern for an iPhone? Thinking about docking things and why one dock interferes with phone communications and why another does not interfere. First look suggests something getting in the way of the antenna pattern. Thus the question - where is the antenna and what direction is the radiation pattern? And if one version phone is different from another, please tell me as many as you can. Thanks in advance for your help. Regards, Scott Douglas - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
