Title :
An accurate experimental method for characterizing transmission lines embedded in multilayer printed circuit boards
Author :
Narita, Kaoru ; Kushta, Taras
Author_Institution :
Jisso & Production Technol. Res. Labs., NEC Corp., Kanagawa, Japan
Abstract :
We have developed an accurate method for measuring the complex propagation constant and characteristic impedance of transmission lines embedded in multilayer printed circuit boards. It is based on mathematical error-removal schemes using two different length transmission lines and an advanced via-hole structure that minimizes coupling. Consequently, associated errors, due to discontinuities and interference can be effectively eliminated, and the frequency dependencies of the transmission line parameters can be clarified in wide frequency bandwidths. We verified the validity of this method in frequency ranges up to at least 18 GHz, by comparing the determined values with the theory derived from transverse electromagnetic (TEM) approximations.
Keywords :
printed circuit design; strip lines; transmission lines; characteristic impedance; mathematical error-removal schemes; multilayer printed circuit boards; propagation constant; transmission line parameters; transverse electromagnetic approximations; via hole structure; Coupling circuits; Distributed parameter circuits; Frequency; Impedance measurement; Nonhomogeneous media; Printed circuits; Propagation constant; Transmission line discontinuities; Transmission line measurements; Transmission line theory; Characteristic impedance; propagation constant; strip line; through holes; vias;
Journal_Title :
Advanced Packaging, IEEE Transactions on
DOI :
10.1109/TADVP.2005.849543
