[time-nuts] GPS ceramic patch in what plastic housing?

Peter Krengel krengeldatec at gmx.de
Sun Sep 5 16:12:05 UTC 2010


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

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