Rectifier circuit and radio communication device
First Claim
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1. A rectifier circuit comprising:
- a bias circuit that outputs a direct-current voltage and includesa first switching unit that is connected to a predetermined voltage source,a first capacitor that holds a voltage supplied through the first switching unit,a second switching unit that is connected to the first capacitor, operation of the second switching unit being complementary with operation of the first switching unit, anda second capacitor that holds a voltage supplied through the second switching unit, as the direct-current voltage;
a first MOS transistor that has a gate and a source, only the direct-current voltage being applied between the gate and the source of the first MOS transistor;
a second MOS transistor that has a gate, a source, and a drain connected to the source of the first MOS transistor, only the direct-current voltage being applied between the gate and the source of the second MOS transistor; and
a coupling capacitor that has a first end which is connected to the source of the first MOS transistor, and a second end to which an alternating-current signal is input.
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Abstract
A rectifier circuit includes a bias circuit that outputs a direct-current voltage; a first MOS transistor that has a gate and a source; and a second MOS transistor that has a gate, a source, and a drain connected to the source of the first MOS transistor. Only the direct-current voltage is applied between the gate and the source of the first MOS transistor, and only the direct-current voltage being applied between the gate and the source of the second MOS transistor. The rectifier circuit also includes a coupling capacitor that has a first end which is connected to the source of the first MOS transistor, and a second end to which an alternating-current signal is input.
44 Citations
16 Claims
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1. A rectifier circuit comprising:
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a bias circuit that outputs a direct-current voltage and includes a first switching unit that is connected to a predetermined voltage source, a first capacitor that holds a voltage supplied through the first switching unit, a second switching unit that is connected to the first capacitor, operation of the second switching unit being complementary with operation of the first switching unit, and a second capacitor that holds a voltage supplied through the second switching unit, as the direct-current voltage; a first MOS transistor that has a gate and a source, only the direct-current voltage being applied between the gate and the source of the first MOS transistor; a second MOS transistor that has a gate, a source, and a drain connected to the source of the first MOS transistor, only the direct-current voltage being applied between the gate and the source of the second MOS transistor; and a coupling capacitor that has a first end which is connected to the source of the first MOS transistor, and a second end to which an alternating-current signal is input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A rectifier circuit comprising:
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a first floating-gate transistor that has a control gate and a source which are connected to each other, a drain, and a first floating gate which holds a predetermined potential; a second floating-gate transistor that has a control gate and a source which are connected to each other, a drain which is connected to the source of the first floating-gate transistor, and a second floating gate which holds a predetermined potential; a coupling capacitor that has a first end which is connected to the source of the first floating-gate transistor, and a second end to which an alternating-current signal is input; a first direct-current voltage source that is connected to the drain of the first floating-gate transistor; a second direct-current voltage source that is connected to the drain of the second floating-gate transistor; a third direct-current voltage source that is connected to the source of the second floating-gate transistor; and a control unit that performs charging or discharging on each of the first and second floating gates by controlling each output voltage of the first, second, and third direct-current voltage sources. - View Dependent Claims (16)
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Specification