Posted on June 25, 2010
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It's the ultimate of ironies that Apple's externalized antenna array
in the iPhone 4 -- hoped (and hyped up) to finally give us a phone
every bit as good the rest of the device -- has become the cause of most rancor
in the immediate aftermath of the handset's release. This morning you'll be rubbing both sleep and disbelief out of your eyes as you read that Apple's response
to some people's
reception problems with the 4 is to hold it differently
. But, before we start ostracizing Apple as the singular offender here, let's hear from a man in the know.
Spencer Webb runs AntennaSys, a company that designs tailormade RF solutions, and has himself worked on making quad-band transceivers for AT&T. As he tells it, almost all phone makers have now transitioned to locating their antennae at the bottom of the phones. This has been in order to move radio wave emissions away from the head (a shortcoming that a top-mounted aerial would incur), which the FCC has been quite demanding about with its SAR standards --
The iPhone 4, however, moved the antenna action from the back of the phone to the sides. This probably improves the isotropy of the radiation pattern, but only when the phone is suspended magically in air.
Another great point made here is that testing done both by the Federales and mobile carriers might include the head, but never accounts for the presence of the person's hand. Thus, although a phone's antenna could test
very well, it might suffer from