Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods

A radio frequency identification device comprising:

• an antenna configured to provide electrical energy corresponding to received electromagnetic energy comprising a first wireless communication signal from a reader;
• a plurality of voltage doubler circuits individually configured to increase a voltage of the electrical energy from the antenna;
• and
• communication circuitry coupled with the voltage doubler circuits and configured to receive the electrical energy of the increased voltage from the voltage doubler circuits;
• wherein the communication circuitry is configured to process the electrical energy of the increased voltage to process the first wireless communication signal.

A method of enhancing a communications range of a radio frequency identification device comprising:

• providing a radio frequency identification device including a first voltage doubler circuit and a second voltage doubler circuit;
• receiving electromagnetic energy using an antenna of the radio frequency identification device;
• providing electrical energy of a first voltage using the antenna of the radio frequency identification device and responsive to the received electromagnetic energy;
• increasing a voltage of the electrical energy to a second voltage greater than the first voltage using the first voltage doubler circuit;
• increasing the voltage of the electrical energy to a third voltage greater than the second voltage using the second voltage doubler circuit coupled in series with the first voltage doubler circuit;
• and
• implementing radio frequency identification device communications using the radio frequency identification device and the electrical energy of the third voltage.

A wireless communication method comprising:

• providing a first device and a second device individually configured to communicate wireless communication signals;
• outputting a first wireless communication signal using the first device;
• first increasing an electrical characteristic of the first wireless communication signal using a first power conditioning circuit of the second device;
• second increasing the electrical characteristic of the first wireless communication signal using a second power conditioning circuit of the second device after the first increasing;
• processing the first wireless communication signal using the second device after the first and second increasings;
• and
• backscatter modulating radio frequency energy using the second device responsive to the processing and to communicate a second wireless communication signal to the first device.