Contactless integrated circuit with high-efficiency electrical power supply circuit
First Claim
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1. A method for supplying an electronic circuit with a direct supply voltage, using high frequency antenna signals, comprising:
- producing a primary direct voltage equal to a fraction of the supply voltage using at least one antenna signal,producing at least two pumping signals having a frequency lower than the frequency of the antenna signals, by means of an oscillator electrically powered by the primary voltage, andboosting the primary voltage by means of a charge pump driven by the pumping signals, to obtain the supply voltage.
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Abstract
A circuit and method for supplying an electronic circuit with a direct supply voltage using high frequency antenna signals. The method includes producing a primary direct voltage equal to a fraction of the supply voltage using at least one antenna signal, producing at least two pumping signals having a frequency lower than the frequency of the antenna signals by means of an oscillator electrically powered by the primary voltage and boosting the primary voltage by means of a charge pump driven by the pumping signals, to obtain the supply voltage.
13 Citations
21 Claims
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1. A method for supplying an electronic circuit with a direct supply voltage, using high frequency antenna signals, comprising:
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producing a primary direct voltage equal to a fraction of the supply voltage using at least one antenna signal, producing at least two pumping signals having a frequency lower than the frequency of the antenna signals, by means of an oscillator electrically powered by the primary voltage, and boosting the primary voltage by means of a charge pump driven by the pumping signals, to obtain the supply voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An integrated circuit comprising:
an electronic circuit and a power supply circuit for supplying the electronic circuit with a direct supply voltage using alternating antenna signals, the power supply circuit comprising; a rectifier circuit receiving at least one of the antenna signals for supplying a primary direct voltage equal to a fraction of the supply voltage, an oscillator electrically powered by the primary voltage, for supplying at least two pumping signals having a frequency lower than the frequency of the antenna signals, and a charge pump driven by the pumping signals for boosting the primary voltage and producing the supply voltage. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A portable electronic device, comprising a portable medium and an integrated circuit formed on a semiconductor chip and incorporated into the portable medium, the integrated circuit comprising:
an electronic circuit and a power supply circuit for supplying the electronic circuit with a direct current supply voltage using alternating current antenna signals, the power supply circuit comprising; a rectifier circuit receiving at least one of the antenna signals for supplying a primary direct current voltage equal to a fraction of the supply voltage, an oscillator electrically powered by the primary voltage and supplying at least two pumping signals having a frequency lower than the frequency of the antenna signals, and a charge pump driven by the pumping signals for boosting the primary voltage to produce the supply voltage. - View Dependent Claims (15, 16, 17)
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18. A circuit, comprising:
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an antenna circuit for receiving an alternating signal; a rectifier circuit coupled to the antenna circuit and receiving the alternating signal and supplying a direct voltage; an oscillator coupled to the rectifier circuit and receiving the direct voltage from the rectifier circuit and generating two pumping signals having a frequency lower than a frequency of the antenna signals; and a charge pump coupled to the oscillator and receiving the pumping signals therefrom, the charge pump generating a supply voltage that is a multiple of the direct voltage from the rectifier circuit. - View Dependent Claims (19, 20, 21)
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Specification