Eric,
I've googled and looked in more traditional places for generalised design data for patch antennas but come up empty handed. If you can suggest anywhere I might find some engineering design guides I'd be very happy. I want to build some for various frequencies, not just 2,4 GHz.
Thanks
Sil
Eric H. Christensen wrote:
Thanks Bob. I figured as much but I thought I'd ask. I'm going to try to set it up for S-band operation. I'm going to try to build a patch from ordinary items from around the house. Maybe I can document it and show others how to build their own setup to help demystify 2.4GHz.
73s, Eric Christensen, W4OTN AMSAT Area Coordinator - Southeastern Virginia USA AMSAT Member 35360 http://www.ericsatcom.net
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Bob Bruninga wrote:
Back to my "new" [18"] dish... Being that it is an offset dish, is 1.2GHz possible with this dish?
No.
Anyone tried this?
Yes. I tried it for our satellite labs for students and althogh I get about 14 dB or so measured gain with it at 2.4 GHz, at 1.2 GHz, it was nothing more than a big piece of metal giving no more gain than a flat reflector... maybe between 3 to 6 dB.
See the photo of its use at 2.4 GHz on the top of this page:
http://www.ew.usna.edu/~bruninga/ea467.html
With the antenna for one of those $75 wireless camera receivers at the focal point, and the companion little wireless camera as a signal source a mile away with only its 1.5" whip antenna, we receive the picture perfectly with a margin of at least 16 dB. This means the picture would still be good out to maybe 6 miles...
It sure is an easy way to get into Amateur TV. Even though it does not even require a license..
But if there are wireless LANS around, then the picture gets lots of QRM..
Bob, Wb4APR
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