24-06-2021 дата публикации
Номер: US20210192156A1
Принадлежит:
Methods and devices for performing dynamic compensation of a phased array RFID reader are disclosed herein. An example method includes configuring an RFID reader having an antenna array to compensate for determined antenna element phase-shift errors. The method includes exciting a reference antenna element of the antenna array, emitting an emitted signal, receiving the emitted signal via a receiver antenna element of the antenna array, and generating a received signal. The method further includes determining, by a processor, a phase shift of the received signal relative to the emitted signal, and determining a phase-shift error. The method then includes configuring the RFID reader to compensate for the determined phase-shift error associated with the receiver antenna element in response to receiving an RFID tag signal. 1. A method for configuring an RFID reader having an antenna array , the method comprising:exciting, via a controller of the RFID reader, a reference antenna element of the antenna array;emitting, via the reference antenna element, an emitted signal, the emitted signal having an emitted signal amplitude, emitted signal frequency, and emitted signal phase;receiving the emitted signal via a receiver antenna element of the antenna array;generating, via the receiver antenna element, a received signal, the received signal having a received signal amplitude and a received signal phase;determining, via a processor, a phase shift of the received signal relative to the emitted signal;determining, via the processor, a phase-shift error, the phase-shift error being determined from a determined phase shift and an expected phase shift; andconfiguring the RFID reader to compensate for the phase-shift error associated with the receiver antenna element in response to receiving an RFID tag signal.2. The method of claim 1 , wherein the reference antenna element is a radio frequency antenna element.3. The method of claim 1 , wherein the receiver antenna element is a ...
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