Circuits and methods for wake-up receivers
AssigneeThe Trustees of Columbia University in the City of New York
InventorsVivek Mangal, Peter R. Kinget
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Abstract
Circuit for wake-up receivers are provide. In some embodiments, the wake-up receivers include self-mixers that receive a gate bias voltage. Some of the self-mixers are single ended and some are differential. In some embodiments, the wake-up receivers include a matching network that is connected to the input of the self-mixer. In some embodiments, the wake-up receivers include a low frequency path connected to the output of the self-mixer. In some embodiments, the wake-up receivers include a high frequency path connected to the output of the self-mixer. In some embodiments, the wake-up receivers are configured to receive an encoded bit stream. In some embodiments, the wake-up receivers are configured to wake-up another receiver.
Claims23
A receiver comprising:
- a self-mixer including a plurality of inputs and an output;
- a matched filter having an input and an output, wherein the input of the matched filter is coupled to the output of the self-mixer;
- and
- a charge pump having an input coupled to the output of the matched filter and having an output coupled to a first input of the plurality of inputs of the self-mixer.
A receiver comprising:
- a self-mixer including a plurality of inputs and an output;
- a matched filter having an input and an output, wherein the input of the matched filter is coupled to the output of the self-mixer;
- and
- a charge pump having an input coupled to the output of the matched filter and having an output coupled to a first input of the plurality of inputs of the self-mixer,
- wherein the matched filter comprises at least two oscillators and a phase frequency detector.
A receiver comprising:
- a self-mixer including a plurality of inputs and an output;
- a matched filter having an input and an output, wherein the input of the matched filter is coupled to the output of the self-mixer;
- and
- a charge pump having an input coupled to the output of the matched filter and having an output coupled to a first input of the plurality of inputs of the self-mixer,
- wherein the matched filter comprises at least two oscillators and a phase frequency detector, and
- further comprising a comparator having at least a first input connected to an output of the phase frequency detector.
Dependencies are inferred from the claim text.