Patent ID: 6813485
Filing Date: 2004-11-02
Classification: H03C,H03D,H04B

Abstract:
A method for down-converting an electromagnetic signal, comprising:(1) periodically coupling a received electromagnetic signal to an energy storage device, the received electromagnetic signal including a carrier signal having a nominal frequency F, the periodic coupling occurring at a rate that is less than twice the nominal frequency F of the carrier signal; (2) acquiring energy from an approximate half cycle of the carrier signal during each of the periodic couplings; (3) increasing an amount of energy stored by the energy storage device during each of the periodic couplings, the increase in the amount of energy stored by the energy storage device being proportional to the energy acquired during each of the periodic couplings; (4) decreasing the amount of energy stored by the energy storage device between each of the periodic couplings, the decease in the amount of energy stored by the energy storage device being proportional to an amount of energy supplied to a load between each of the periodic couplings; and (5) generating an information signal proportional to the amount of energy stored by the energy storage device.