----- Original Message ----- From: "John Belstner" <jbelst...@yahoo.com> To: "Greg D." <ko6th_g...@hotmail.com> Cc: <amsat-bb@amsat.org> Sent: Monday, June 07, 2010 4:37 PM Subject: [amsat-bb] Re: CP antenna from 2 WiFi panels
> Hi Greg, > > These panels are patch style antennas and as such you will not be able to place one behind the other to obtain circular polarization. Placing one next to the other will at best produce an elliptically polarized pattern, and you should use a 50 ohm splitter to keep your impedance 50 ohms. The shape of the patch and position of the feed point is typically how you obtain circular polarization with a patch antenna. > > Or, you can obtain RHCP with the same or more gain and less trouble by making a Helix. A sheet of aluminum, #8 copper wire and and a piece of PVC of the right diameter is all you need. > http://brneurosci.org/helix-antenna.html > > Or, you can try just a single panel and see how it performs for a while. > > Good luck! > > 73, John W9EN > DM13le > w...@amsat.org > Hi John, W9EN I would like to know if these panels are patch style antennas linearly or circularly polarized. Tanks 73" de i8CVS Domenico _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
