PCB Traces. CK Cheng CSE Dept. UCSD. PCB Traces. AC Resistance and Skin Effect at 1GHz. Magnetic Field of Strip Line. Trace loss from -13 0 C to 67 0 C. Non-TEM Modes. DC Handling. Signal Reflection. Trace Compensation. Source Termination. End Termination. Fly-by Termination.