Patent ID: 9659127
Date: 2017-05-23
CPC Classifications: G06F,H01L,H05K,Y02P

Claim:
1. An electronic apparatus, comprising: a user interface to receive an input selecting a plurality of circuit devices; a storage to store electrical current information and a Scattering parameter (S-parameter) regarding input/output (I/O) ports of the plurality of circuit devices respectively; a calculator to calculate impedance per number of de-coupling capacitors based on the stored S-parameters and to calculate an accumulated noise value per number of the de-coupling capacitors based on the calculated impedance and the electrical current information; and a controller to determine a number of the de-coupling capacitors by comparing the calculated accumulated noise values with a predetermined threshold of a standard accumulated noise, and to control the user interface to display the determined number of the de-coupling capacitors.