Abstract
A current in a printed circuit board(PCB)power supply line contains radio frequency(RF)currents corresponding to all internal LSI circuit currents. Then, it is necessary for estimating the power supply current to use an appropriate model for LSI power supply terminals. In this report, a new LSI model for the power power supply terminal is proposed, which is a component whose resistance varies with time. Current in the power supply line of a PCB was well simulated by using the model. The maximum deviation between simulated values of current spectra and the measured in experiments was found to be within 10dB in the range of 1MHz to 1GHz.
