How to make my Red Pitaya board to input AC coupling?

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RicWen
Posts: 1
Joined: Tue Nov 19, 2019 6:44 am

How to make my Red Pitaya board to input AC coupling?

Post by RicWen » Tue Nov 19, 2019 6:52 am

Hi,

Can someone tell me how to implement AC coupling function using Red Pitaya board?
Can i just simply series a capacitance(0.1uF) into the RF input?

Thanks in advance.

jmadsenee
Posts: 47
Joined: Fri Apr 17, 2015 7:38 pm
Location: Richmond, VA, USA

Re: How to make my Red Pitaya board to input AC coupling?

Post by jmadsenee » Thu Nov 21, 2019 10:52 pm

I think that should be fine. Make sure the impedance of your cap is very low at your lowest frequency of measurement or you will phase shift and attenuate your lowest frequencies.

John

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