[time-nuts] Galvanic decoupling of GPS antenna

bg at lysator.liu.se bg at lysator.liu.se
Wed Jun 16 17:26:15 EDT 2010


Hi Yuri,


> Hello,
>
> I'm trying to put gps (for a coarse timing sync and RTC
> auto-setting) to a small controller that must be completely
> galvanically decoupled from outside world. Antenna power must be
> supplied from separate power source (ground potential of isolated part
> of circuit can slowly float up to +/- 250 volts referenced to ground
> of antenna power supply).

Decouple your system by re-radiating the GPS signal.

   http://gpsnetworking.com/GPS-re-radiating-kits.asp

You could probably find parts to make your own design cheaper than above
url. The sending antenna is (always?) a passive antenna.

--

   Björn





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