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Where are the iPhone 4 antennas' feeding and grounding points?

What sort of antenna does iphone 4 employs? Is it an IFA (inverted F antenna)? I tried to find the feeding and grounding points, particularly for the wireless antenna (WiFi, Bluetooth and GPS).

Usually and IFA has a feeding point somewhat in the middle. Unfortunately, I cannot find it. There seems to be a feeding point close to the top slit.

Is it possible then to achieve dual-band behavior? How many grounding points are there, and where?

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iRobot さんによる2010年12月7日

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投稿日: 2010年12月18日

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Looks like its all a big secret. Here is some info on the antenna but not sure if this will help you in your quest. http://www.anandtech.com/show/3794/the-i... some more neat stuff here http://robertthorpeconsulting.com/wordpr... and here http://www.wired.com/epicenter/2010/07/a... and here is some more really interesting reading http://forums.macrumors.com/showthread.p... Hope this has the info you wanted. Good luck.

This image shows the feed points

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iPhone 4

Where are the iPhone 4 antennas' feeding and grounding points?

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