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AD5933 capacitive impedance problem

Question asked by richeekdey on May 3, 2018
Latest reply on May 13, 2018 by richeekdey

Hi all, 

I'm trying to measure capacitive impedance using the AD5933. The impedance value I get is correct. However, when I look deeper, I see that the imaginary part is actually increasing with frequency instead of decreasing. I need to know this imaginary part to further calculate things. Since I'm only interested in the capacitive part, I want the Xc (the capacitive reactance) so that I can calculate my capacitance and them permitivity. 

 

I've made my own capacitor by putting 2 copper plates parallel to each other. 

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