Hi What are you trying to achieve ?
If you are looking for a simple cover for the patch, the microwave oven is your friend. Anything that heats up in a microwave is a bad idea, unless it's thin. Most materials with a variable cross section will act as a lens to some extent. Bob On Sep 5, 2010, at 12:12 PM, "Peter Krengel" <[email protected]> wrote: > Hello, > > I just did some experiments using a ceramic patch antenna inside a > small plastic (80 x 30 x 20mm) screw box and experienced much bader signals > at lower elevations. > The plastic is marked as PS (I guess polystyrole ?). Further experiments > covering a GPS with the same kind of box seemed to effect the signals > too. On the other hand covering the patch with a flat pcs of the same > material didnt effect the antenna. > > Is there possibly a cavity effect? > > What to take best? > > Any ideas? > > > Thank you > > Peter, DG4EK > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
