Neeti Sonth is working as a Test Engineer- Signal and Power Integrity at Mentor Graphics Corporation. She received her MS in Electrical Engineering (focusing on RF and Signal Integrity) from University of Colorado- Boulder in 2018 and has been with Mentor Graphics since then.
The dielectric constant, Dk, of a laminate will affect the characteristic impedance of a transmission line and its time delay. If you hope to achieve a specific target characteristic impedance on the first pass, it is essential to know the Dk of each laminate layer. Here is a quick, simple way of measuring it.