Radio-frequency localization techniques and associated systems, devices, and methods
First Claim
1. A system, comprising:
- a plurality of interrogator devices including first and second interrogator devices, each of the first and second interrogator devices comprising;
at least one radio-frequency (RF) antenna configured to transmit RF signals to and receive RF signals from a target device;
transmit circuitry configured to generate RF signals having a first center frequency for transmission to a target device by the at least one antenna;
receive circuitry configured to process RF signals having a second center frequency received, from the target device, by the at least one antenna, the second center frequency being different from the first center frequency; and
a controller configured to control operation of the plurality of interrogator devices in accordance with a staggered trigger schedule at least in part by;
controlling the first interrogator device to transmit, to the target device, a first RF signal having the first center frequency;
after the first interrogator device has started transmitting the first RF signal and before the first interrogator device has completed transmitting the first RF signal, controlling the second interrogator device to transmit, to the target device, a second RF signal having the first center frequency.
1 Assignment
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Accused Products
Abstract
A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device.
105 Citations
20 Claims
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1. A system, comprising:
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a plurality of interrogator devices including first and second interrogator devices, each of the first and second interrogator devices comprising; at least one radio-frequency (RF) antenna configured to transmit RF signals to and receive RF signals from a target device; transmit circuitry configured to generate RF signals having a first center frequency for transmission to a target device by the at least one antenna; receive circuitry configured to process RF signals having a second center frequency received, from the target device, by the at least one antenna, the second center frequency being different from the first center frequency; and a controller configured to control operation of the plurality of interrogator devices in accordance with a staggered trigger schedule at least in part by; controlling the first interrogator device to transmit, to the target device, a first RF signal having the first center frequency; after the first interrogator device has started transmitting the first RF signal and before the first interrogator device has completed transmitting the first RF signal, controlling the second interrogator device to transmit, to the target device, a second RF signal having the first center frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system, comprising:
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a first interrogator device comprising at least a first radio-frequency (RF) antenna configured to transmit RF signals to and receive RF signals from a target device; a second interrogator device comprising at least a second RF antenna configured to transmit RF signals to and receive RF signals from the target device; a controller configured to control operation of at least the first and second interrogator devices in accordance with a staggered trigger schedule at least in part by; controlling the first interrogator device to transmit a first RF signal to the target device; after the first interrogator device has started transmitting the first RF signal and before the first interrogator device has completed transmitting the first RF signal, controlling the second interrogator device to transmit a second RF signal to the target device, wherein the first interrogator device is configured to; receive a third RF signal from the target device; and generate, using the first RF signal and the third RF signal, a first mixed RF signal indicative of a first distance between the first interrogator device and the target device, wherein the second interrogator device is configured to; receive a fourth RF signal from the target device; and generate, using the second RF signal and the fourth RF signal, a second mixed RF signal indicative of a second distance between the second interrogator device and the target device. - View Dependent Claims (13, 14, 15, 16)
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17. A method, comprising:
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controlling a first interrogator device to transmit, to a target device, a first radio-frequency (RF) signal having a first center frequency; after the first interrogator device has started transmitting the first RF signal and before the first interrogator device has completed transmitting the first RF signal, controlling a second interrogator device to transmit, to the target device, a second RF signal having the first center frequency; receiving, from the target device and using the first interrogator device, a third RF signal having a second center frequency different from the first center frequency; receiving, from the target device and using the second interrogator device, a fourth RF signal having the second center frequency; generating, using the first RF signal and the third RF signal, a first mixed RF signal indicative of a first distance between the first interrogator device and the target device; and generating, using the second RF signal and the fourth RF signal, a second mixed RF signal indicative of a second distance between the second interrogator device and the target device. - View Dependent Claims (18, 19, 20)
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Specification