🚀 go-pugleaf

On 7/13/2010 12:32 PM, Jeff Liebermann wrote:
> On Tue, 13 Jul 2010 08:41:11 -0700, John Slade<hhitman86@pacbell.net>
> wrote:
>
>>> however, everyone is suddenly an rf engineer and thinks they have all
>>> the answers, even when apple themselves haven't completely figured it
>>> out.
>>
>>      There is nothing to figure out. The antenna is in a bad
>> place.
>
> Ummm... I are an RF Engineer (and I'm enjoying all the speculation). I
> also design and model antennas in my spare time:
> <http://802.11junk.com/jeffl/antennas/>
>
> It's not the location of the antenna.  The same antenna design located
> anywhere on the phone will cause the same problem.  I don't think
> anyone has tried it but I suspect that the BlueGoof and Wi-Fi
> performance might also suffer when the other antenna is touched.
>
> I posted my guesses previously (high impedance antenna with
> excessively high Q) and am waiting for a chance to rip into the guts
> of an iPhone 4 to see how the antenna is really designed.  The inside
> photos that I've seen don't show enough.
>
> Drivel:  I wonder if the black silicon rubber prophylactic that Apple
> wraps around the phone is doped with carbon black for static
> reduction.  That should make a nice RF attenuator and/or slightly
> conductive "short".
>
> 10 Things Apple Can Do to Fix iPhone 4 Antenna Woes
> <http://www.eweek.com/c/a/Mobile-and-Wireless/10-Things-Apples-Can-Do-to-Fix-iPhone-4-Antenna-Woes-492275/>
>

      Well the hardest part is over because they finally 
admitted the problem.

> AppleCare: The iPhone 4 Update Won't Solve the Antenna Problem
> <http://gizmodo.com/5580587/applecare-the-iphone-4-update-wont-solve-the-antenna-problem>
>
>

      It seems you know more about antennas than me and Apple 
combined. Maybe you should apply for one of those antenna 
engineering jobs Apple has open now.

John