Charging Long-Range Radio Frequency Identification Tags
First Claim
1. A system for charging long-range radio frequency identification tags comprising:
- a first transmitter configured to direct a first energy beam to an energy location;
a second transmitter configured to direct a second energy beam to the energy location, the second transmitter physically separate from the first transmitter;
a tag at the energy location, the tag configured to store a received energy from the energy location, to sense a sensor data, and to transmit the sensor data to a reader after a period from when the tag is at the energy location; and
a controller configured to align at the energy location, a first frequency of the first energy beam with a second frequency of the second energy beam, and at least one of a first phase, and a first polarity of the first energy beam with a respective second phase, and a respective second polarity of the second energy beam to maximize an energy level at the energy location in response to a device response of the tag.
1 Assignment
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Accused Products
Abstract
A system for charging long-range radio frequency identification tags includes a plurality of physically separated transmitters. Each transmitter is configured to direct a respective energy beam to an energy location. A tag is at the energy location. The tag is configured to store a received energy from the energy location, to sense a sensor data and to transmit the sensor data to a reader after a capacitor connected to the tag charges to an operating voltage level. The capacitor is charged by the received energy. A controller is configured to align at the energy location for each of the plurality of transmitters, a respective frequency, and at least one of a respective phase, and a respective polarity of each respective energy beam to maximize an energy level at the energy location in response to a device response of the tag.
28 Citations
20 Claims
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1. A system for charging long-range radio frequency identification tags comprising:
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a first transmitter configured to direct a first energy beam to an energy location; a second transmitter configured to direct a second energy beam to the energy location, the second transmitter physically separate from the first transmitter; a tag at the energy location, the tag configured to store a received energy from the energy location, to sense a sensor data, and to transmit the sensor data to a reader after a period from when the tag is at the energy location; and a controller configured to align at the energy location, a first frequency of the first energy beam with a second frequency of the second energy beam, and at least one of a first phase, and a first polarity of the first energy beam with a respective second phase, and a respective second polarity of the second energy beam to maximize an energy level at the energy location in response to a device response of the tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for charging long-range radio frequency identification tags comprising:
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directing by a first transmitter, a first energy beam to an energy location; directing by a second transmitter physically separate from the first transmitter, a second energy beam to the energy location; storing by a tag at the energy location, a received energy from the energy location; sensing with the stored received energy, a sensor data; transmitting with the stored received energy, the sensor data from the tag to a reader, after a period from when the tag is at the energy location; and aligning at the energy location by a controller, a first frequency of the first energy beam with a second frequency of the second energy beam, and at least one of a first phase and a first polarity of the first energy beam with a respective second phase and a respective second polarity of the second energy beam to maximize an energy level at the energy location in response to a device response of the tag. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A system for charging long-range radio frequency identification tags comprising:
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a plurality of physically separated transmitters, each transmitter configured to direct a respective energy beam to an energy location; a tag at the energy location, the tag configured to store a received energy from the energy location, to sense a sensor data and to transmit the sensor data to a reader after a capacitor connected to the tag charges to an operating voltage level, the capacitor charged by the received energy; and a controller configured to align at the energy location for each of the plurality of transmitters, a respective frequency, and at least one of a respective phase, and a respective polarity of each respective energy beam to maximize an energy level at the energy location in response to a device response of the tag. - View Dependent Claims (20)
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Specification