RADIO FREQUENCY IDENTIFICATION DEVICE COMMUNICATIONS SYSTEM

摘要

Radio frequency identification device communications systems, wireless communication devices, wireless communication systems, backscatter communications methods, radio frequency identification device communications methods and a wireless communication are provided. In one aspect, a radio frequency identification device communications system includes a reader configured to output a plurality of first wireless communication signals, a radio frequency identification device configured to receive the first wireless communication signals and to output a plurality of second wireless communication signals and wherein the radio frequency identification device is configured to output some of the second wireless communication signals according to a first modulation frequency and responsive to the first wireless communication signals, and to output others of the second wireless communication signals according to a second modulation frequency different than the first modulation frequency and responsive to stimulus internal of the radio frequency identification device.