RFID interrogator with adjustable signal characteristics
First Claim
Patent Images
1. A radio frequency identification (RFID) interrogator comprising:
- a portable platform;
at least one antenna coupled to the platform;
a transceiver coupled to the platform for transmitting a first radio frequency (RF) signal and for receiving a second RF signal through the antenna;
a trigger coupled to the platform, wherein the trigger signals the transceiver to transmit the first RF signal and to receive the second RF signal emanating from a RFID device;
a controller coupled to the platform and in communication with the transceiver, wherein the controller is configured to;
adjust power and a transmission direction of the first RF signal, andadjust a sensitivity and direction of the antenna to indicate a directional axis along which the second RF signal is received such that other RF signals transmitted along a different directional axis are not received at the transceiver.
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Abstract
A radio frequency identification (RFID) interrogator housed in a portable platform that includes at least one antenna, a transceiver for transmitting and receiving a radio frequency (RF) signal through the antenna, and a controller in communication with the transceiver for adjusting power and direction of the transmitted RF signal. The controller can be configured to adjust the antenna orientation, and can also selectively activate and deactivate one or more antennas.
122 Citations
19 Claims
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1. A radio frequency identification (RFID) interrogator comprising:
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a portable platform; at least one antenna coupled to the platform; a transceiver coupled to the platform for transmitting a first radio frequency (RF) signal and for receiving a second RF signal through the antenna; a trigger coupled to the platform, wherein the trigger signals the transceiver to transmit the first RF signal and to receive the second RF signal emanating from a RFID device; a controller coupled to the platform and in communication with the transceiver, wherein the controller is configured to; adjust power and a transmission direction of the first RF signal, and adjust a sensitivity and direction of the antenna to indicate a directional axis along which the second RF signal is received such that other RF signals transmitted along a different directional axis are not received at the transceiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio frequency identification (RFID) interrogator comprising:
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a transceiver for transmitting a first radio frequency (RF) signal and for receiving a second RF signal; an antenna in communication with the transceiver; a transducer for presenting an alert to a user, wherein the alert includes any one of an audio indication, visual indication, and physical indication; and a controller in communication with the transceiver, wherein the controller is configured to; adjust characteristics of the first RF signal, and adjust a sensitivity and direction of the antenna to indicate a directional axis along which the second RF signal is received such that other RF signals transmitted along a different directional axis are not received at the transceiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification