In sci.physics John Larkin wrote:
On Tue, 21 Aug 2007 16:25:02 GMT, wrote:
In sci.physics John Larkin wrote:
On Tue, 21 Aug 2007 15:15:02 GMT, wrote:
In sci.physics John Larkin wrote:
On Tue, 21 Aug 2007 04:25:03 GMT, wrote:
In sci.physics John Larkin wrote:
On Mon, 20 Aug 2007 22:25:02 GMT, wrote:
OK, now you have some switched power, what generates the RF?
Switched power *is* RF!
Ummm, no.
Switched power is just switched power.
There has to be a microwave RF generator somewhere.
Google "uwb transmitter".
Good grief.
A phased array requires precise phase (or frequency) control of the
emitters to do the beam forming and aiming.
How does one do that with a "uwb transmitter"?
Timing.
Point totally missed.
Which phase (or frequency) of an Ultra Wide Band transmitter do you use?
You can't use all of them.
Do you have a PhD in what can't be done?
No, but I have enough years of experience with RF in general and radar
in particular to know building a phased array requires precise phase
(or frequency) control and you can't do that with an ultra wideband
device, which has a bandwidth of 500 Mhz.
Such a device may make a great wireless LAN at ranges of tens of yards,
but is not the device of choice for building a phased array anything.
--
Jim Pennino
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