Invention Grant
US08344855B2 Radio frequency identification interrogator and method of operating the same 失效
射频识别询问器及其操作方法

Radio frequency identification interrogator and method of operating the same
Abstract:
A radio frequency identification (RFID) interrogator for determining a bandwidth of a backscattering signal to be backscattered by an RFID tag and a method of operating the same are provided. The RFID interrogator senses a predetermined frequency band to determine whether the predetermined frequency band has been occupied and determines a sensing result. The RFID interrogator further controls the bandwidth of the backscattering signal in response to the sensing result.
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