HOMODYNE RFID RECEIVER AND METHOD
First Claim
Patent Images
1. An RFID circuit, comprising:
- an RF carrier signal source;
a hybrid coupled to the RF carrier signal source operable to generate an in-phase and a quadrature phase component of the RF carrier signal;
a switch coupled to the hybrid operable to pass one of the in-phase and quadrature phase components of the RF carrier signal to its output; and
a mixer coupled to the output of the switch operable to multiply one of the in-phase and quadrature phase component of the carrier signal and a received modulated carrier signal and generate a baseband signal.
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Abstract
An RFID circuit comprises an RF carrier signal source, a hybrid coupled to the RF carrier signal source operable to generate an in-phase and a quadrature phase component of the RF carrier signal, a switch coupled to the hybrid operable to pass one of the in-phase and quadrature phase components of the RF carrier signal to its output, and a mixer coupled to the output of the switch operable to multiply one of the in-phase and quadrature phase component of the carrier signal and a received modulated carrier signal and generate a baseband signal.
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Citations
2 Claims
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1. An RFID circuit, comprising:
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an RF carrier signal source;
a hybrid coupled to the RF carrier signal source operable to generate an in-phase and a quadrature phase component of the RF carrier signal;
a switch coupled to the hybrid operable to pass one of the in-phase and quadrature phase components of the RF carrier signal to its output; and
a mixer coupled to the output of the switch operable to multiply one of the in-phase and quadrature phase component of the carrier signal and a received modulated carrier signal and generate a baseband signal. - View Dependent Claims (2)
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Specification