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Steven,

<P>I am currently researching doing something vaguely similar. The desired
application is to create an "adaptive spot beam" antenna for a mobile data
radio system ( where both ends of the pipe are moving ). You would normally
use an omni-directional antenna in this application - but I have never
been accused of being normal ( and the bonus checks are MUCH bigger when
you can pull a rabbit out of your hat now and then ).&nbsp;&nbsp;

<P>My intention is to use the RSSI from the receiver as the input to the
brains of the antenna, and then employ some magic to control adjusting
the phasing of the antenna elements, and thus the shape and position of
the beam. So far the challenges appear to be making a "small" antenna and
adjusting the phase fast enough ( my application is at UHF - 450mhz ).
The U.S. military has had to develop an <U>optical</U> gang switch to gain
the necessary speed for a wide band phased antenna - mentioned here as
a reference to the speed required. Of course, they have had Phased Array
Radar antenna's in service for many moons that effectively do the same
thing. I do not need the wide band capability - so it should be several
orders of magnitude easier to do for one frequency.

<P>I am interested in sharing any info on this subject - please keep me
posted ( but sorry to say I won't be sharing the bonus check ). I would
think you would be in hog heaven regarding available data on this subject
( working for Celwave ).

<P>Good Luck

<P>Bill Rhoads
<BR>wrhoads@earthlink.net

<P>CAUTION -&nbsp;&nbsp; Do NOT look into laser with remaining eye!!
<BR>&nbsp;

<P>Steven Kosmerchock wrote:
<BLOCKQUOTE TYPE=CITE>Comrads in the PIC'n war,
<BR>Has anybody ever tried to use a PIC or any type of uC in a "SMART antenna"?(
A "SMART antenna" is an antenna that will adjust itself to pick up the
best possible signal.) If so what type of processor did you use. Thanks
in advance.

<P>*********************************************************
<BR>PIC website with other cool info.
<BR>www.geocities.com/researchtriangle/lab/6584
<BR>**********************************************************
<BR>Steve Kosmerchock
<BR>Engineering Technician
<BR>CELWAVE
<BR>Phoenix&nbsp;&nbsp;&nbsp;&nbsp; AZ&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
USA
<BR>email:&nbsp;&nbsp; steve.kosmerchock@celwave.com
<BR>**********************************************************</BLOCKQUOTE>
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