i need a simple Circuit to get dielectric constant

One of methods of measuring capacitance (and indirectly dielectric constant) is a simple AC Bridge ..
Here is info on AC bridges:
http://www.allaboutcircuits.com/vol_2/chpt_12/5.html
Your test capacitor may look like two metal plates and you have to place dielectric under test between the plates ..
The rest, after capacitance measurement, is just mathematics ..
Here you can find necessary formulas:
http://www.kilowattclassroom.com/Archive/CapXC.pdf

Rgds,
IanP

Thank you very much my friend
But I have a question What are the values of circuit elements
Thank you again

by using ring resonator circuit

here is the link

http://www.microwaves101.com/encyclo...dielectric.cfm

Thank you very much my friend
But I want a circuit that i can developing in the house