An Accurate Method for Measuring the Dielectric Constant of Printed Wiring Board Materials
Nicholas G. Paulter Jr.
A new time-domain reflectometry measurement method is described that provides accurate measurements of the average high frequency (0.1 GHz to 10 GHz) dielectric constant of printed wiring board materials and that is suitable for factory floor use. A parallel plate transmission line is used for the sample geometry. Only simple numerical processes are required to extract the characteristic impedance and dielectric constant of the sample from the acquired data. The long term measurement reproducibility and short term measurement repeatability of the method are described.
An Accurate Method for Measuring the Dielectric Constant of Printed Wiring Board Materials, IPC Printed Circuit Expo, Long Beach, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=7353
(Accessed December 1, 2023)