Input voltage levels are low; so threshold voltage
modulation scheme is needed.
External bias voltage is not available.
The frequency of operation is high; therefore parasitic
capacitance of MOSFETs is major source of loss in the
circuit.
The circuit should be dissipating minimum power to
increase the overall system efficiency.
shows the basic block diagram of RF–DC conversion
system. Wireless networks are an omnipresent RF energy
source; therefore we have developed an RF energy harvesting
system at 2.67 and 5.8GHz. It covers the lower and upper
bounds of Wi-Max. RF-DC conversion using Schottky diode
and CMOS rectifier has been explored. Minimum numbers of
components are used in the design of the RF Energy
harvesting system to reduce power dissipation.