Simulation of printed circuit board impedance variations and crosstalk effects
View Patent ↗A method for altering an impedance of a conductive pathway on a microelectronic package includes applying a magnetic field to the conductive pathway. The microelectronic package may be, for example, a printed circuit board. The method also includes controlling a magnitude of the magnetic field at the conductive pathway for altering the impedance of the conductive pathway. The magnetic field may be applied by, for example, an electromagnet or a permanent magnet. A magnetic field may also be applied for simulating crosstalk effects on a conductive pathway.
1. A method comprising:
using a magnetic field generator to apply a magnetic field to a conductive pathway on a microelectronic package;
measuring an impedance of the conductive pathway while the magnetic field is being applied to the conductive pathway;
calibrating the magnetic field generator based on the measured impedance;
using the magnetic field generator to control the magnitude of the magnetic field to alter the impedance of the conductive pathway to be within a predetermined impedance range; and
testing the microelectronic package while the impedance of the conductive pathway is altered.
2. The method of claim 1 , wherein the microelectronic package is a printed circuit board.
3. The method of claim 1 , wherein the magnetic field generator comprises:
an electromagnet; and
a computing device coupled to the electromagnet and configured to control a magnitude of electric current passing through the electromagnet for controlling the magnitude of the magnetic field at the conductive pathway.