Signoff power methodology for contactless smartcards

Power management for contactless smartcards (SC) is mandatory since energy is supplied by RF electromagnetic waves. At any time and for any SC functional instruction, product engineers must ensure that the stored energy is able to satisfy system consumption. This paper proposes a methodology to survey dynamic current in contactless SC by charge variation analysis. Experimented on a real SC product, it is shown that simulation results are in good agreement with silicon measurements. Finally, we conclude this methodology may be used like a signoff step of product design flow.