On Wed, 15 Aug 2007 14:38:46 -0500, "amdx" wrote:

I've build a 2.4Ghz Patch antenna. It has gain. I move the feedpoint to change the
input impedance. Now it has more signal strength, so I move in the same direction again
and it shows even more signal strength, 2 more adjustments more signal, 1 more move
and signal strength looks like it's starting to go down in signal strength.

Hi Mike,

Looks like you found away to get a low SWR (does it really matter how
much it is if you can't improve the output?).

(These moves were about .060" each.)
Now I see a VSWR meter at http://pe2er.nl/wifiswr/
I wonder if this can help me get a handle on adjusting for proper impedance?

It looks like a pretty good design. Remember to observe the power
limit.

The reason I want 50 ohms is because I want to build an array of 4 Patches.
The 50 ohms is important to impedance matching with 1/4 wavelength coax.
I'm using this site as info for the matching and connections.
http://www.darc.de/distrikte/g/T_ATV...d-Array-GB.pdf
Yes, I'm using Patches instead of Biquads.

The element lengths will vary (as will the pattern to some degree).

PS. What do you think about the antenna spacing?

You should stick to THOSE shown on the previous link.

So now the problem I don't know what the input impedance is.

You've got the plans for a good SWR meter, let it go at that. You
could probably build it faster than waiting for the final benediction
here.

73's
Richard Clark, KB7QHC