Wide dynamic range rectification circuit based on constant voltage load

The invention discloses a wide dynamic range rectification circuit based on a constant voltage load. A rectifying circuit suitable for a wireless power transmission system can receive radio frequency energy and effectively convert the radio frequency energy into direct current so as to supply power to wireless sensing nodes. The rectification circuit adopts the variable capacitance diodes, and ensures that the two Schottky diodes respectively work under high input power and low input power levels by designing a non-linear power distribution network, so that the high efficiency of rectification efficiency in a wide power range is ensured. And meanwhile, different reverse bias voltages are provided for the variable capacitance diode by utilizing the voltage of the low-power branch, the input impedance change of the rectification circuit under different input power and load conditions is compensated, high-efficiency rectification in a wide input power range is realized, and extra voltage control is not needed. T