Wireless communication systems, radio frequency identification devices,
methods of enhancing a communications range of a radio frequency identification
device, and wireless communication methods are described. According to one aspect,
a wireless communication system includes a reader configured to output a first
wireless communication signal and to receive a second wireless communication signal
comprising a backscatter signal and a remote communication device configured to
receive the first wireless communication signal and to communicate the second wireless
communication signal comprising the backscatter signal, wherein the remote communication
device includes an antenna configured to provide electrical energy, communication
circuitry configured to process the received first wireless communication signal
and to generate a modulation signal to communicate the backscatter signal and a
plurality of power conditioning circuits coupled in series intermediate the antenna
and the communication circuitry and individually configured to enhance at least
one electrical characteristic of the electrical energy from the antenna.
