DC voltage for active antenna?

Useful information regarding antennas for SDR products.
matt
Posts: 1
Joined: Fri Mar 11, 2016 7:25 pm

DC voltage for active antenna?

Postby matt » Fri Mar 11, 2016 7:29 pm

Just wondering if the SDRplay antenna connector contains a DC voltage suitable for powering an active antenna. I want to do some GPS experimenting using SDRplay and need to figure out a good antenna -- I already have an active antenna for GPS that requires +5 volts.

Advice much appreciated.
Last edited by matt on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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DerekR
Posts: 2
Joined: Thu Mar 10, 2016 12:56 pm

Re: DC voltage for active antenna?

Postby DerekR » Sat Mar 12, 2016 3:45 pm

No, unfortunately it doesn't. The antenna connector is simply capacitively coupled to the input circuitry. It shouldn't be too difficult to design a dc filter with rf chokes to isolate the rf from the dc source.
Last edited by DerekR on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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