Is iPhone4 Born With Antenna Problem?

"Its never been done before and its really cool engineering." How Steve Jobs introduced the metal frame on the new iPhone because the phone the other day was revealed to the wondering world. The frame serves as the phone antenna.
But the fact is the principle behind the iPhone 4-antenna system is far from new. And possibly it is even so problematic that it will reduce the phone's performance.
One of the leading experts when it comes to mobile phone antennas, is Professor Gert Frolund Pedersen from Aalborg University's Department of Electronic Systems.

He is leading an international research team that recently got one million support from Advanced Technology Foundation to develop a more effective mobile antenna, and has for many years studereret antenna technology on the mobile front.
Asked about Apple's iPhone presentation of four, he answered that the design of the antenna as a part of the phone's frame is an old news that is seen many times before. Virtually all cell phone antennas on the market uses phone's metal parts such as antenna.
But on the iPhone 4, it also appears that this antenna's designs can provide special challenges because a portion of the antenna will inevitably be affected by the user's hand.
"The actual circuit board works as a part of the antenna and the metal frame around the coupler signal into it. But it means that the user can not avoid interfering antenna system with its touch, "says Gert Frølund Pedersen.
But designers can not compensate for touch in the software so that they be repealed or even used as an advantage?
"But the human tissue will in any event, have an inhibitory effect on the antenna. Touch means that a larger portion of the antenna energy turns into heat and lost. This makes the antenna less efficient to send and receive radio signals, "says Gert Frølund Pedersen.
Researchers at Aalborg University have previously demonstrated that gradually reduce mobile antenneeffektivtet in very great degree. Antenna effect may be reduced by more than 90 percent if you hold tight on your mobile phone where the antenna is located.
But on top of the electrical disturbances which physical contact between skin tissue and the antenna metal will result.
When Steve Jobs recently had to demonstrate an online feature on the new phone, he could not initially connect wonderful unit on some of those present WiFi networks. But due to the glaring coke in the otherwise controlled showcase a poorly designed antenna?
"It is enough other features that you can not come at such a location. But maybe the antenna was a contributing factor. The appliances that have the weakest signal will ever be thrown only by, "says Gert Frølund Pedersen.
He suggests that a more efficient antenna design in a smartphone would be a system with two different antennas, which can take over from each other depending on how you hold her hand.
Precisely such an antenna model that can function more optimally and energy-friendly in the future, advanced smartphones, have set out to develop in North Jutland research team.