RF Energy Harvesting - Extremely Low level Voltage Supervisor Design
RF Energy Harvesting - Extremely Low level Voltage Supervisor Design
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This project designs an ultra-low voltage supervisor (VS) for RF energy harvesting, enabling efficient power management in low-power IoT devices. By optimizing MOSFET parameters, the VS operates below 300mV, minimizing power loss and supporting battery-free electronics for sustainable IoT applications.
This project designs an ultra-low voltage supervisor (VS) for RF energy harvesting, enabling efficient power management in low-power IoT devices. By optimizing MOSFET parameters, the VS operates below 300mV, minimizing power loss and supporting battery-free electronics for sustainable IoT applications.
Energy Harvesting Schema
Divided in 3 parts: Retenna, Voltage Supervisor and Voltage Booster.
Function of Voltage Supervisor
The Voltage Supervisor (VS) operates as a threshold detection switch circuit in an RF energy harvesting system, ensuring efficient power reuse.
The Voltage Supervisor (VS) operates as a threshold detection switch circuit in an RF energy harvesting system, ensuring efficient power reuse.
Working Mechanism:
Low Voltage Region (Left Side of m3) ：Non energy output
Threshold Detection (m3 Point) : Switch on/off voltage
Switching Behavior (Right side of m3): Enable as power supply
A lower threshold voltage(than 300mV) meas a higher energy reusing efficiency.
In this Voltage Supervisor (VS) circuit, MOSFETs play a crucial role in threshold detection and switching to regulate energy harvesting efficiency. Thus it'c crucial to design the MOSFET parameter to obtain a low threshold voltage
In this Voltage Supervisor (VS) circuit, MOSFETs play a crucial role in threshold detection and switching to regulate energy harvesting efficiency. Thus it'c crucial to design the MOSFET parameter to obtain a low threshold voltage
Voltage Supervisor Schema
EMosfet Parameter Config(Channel size, Doping density and etc.)
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Experiment Implement
In order to validate the architecture, a proof of concept was designed on Printed Circuit Board(PCB) to realize this design in practical.
Design results
Design results
Vout increases with Vout with a acceptable time delay and reach almost the same voltage level after this delay. This demonstrates that this PCB circuit work validated the design of Ultra-low Voltage Supervisor and provided a strong support for practical application of Energy Harvesting system.
As a circuit designer, simulation engineer, I worked with my advisor and was reponsible to project planning, task delegation, and technical decisions. If you have any idea to discuss with me, feel free to contact me with my email:
As a circuit designer, simulation engineer, I worked with my advisor and was reponsible to project planning, task delegation, and technical decisions. If you have any idea to discuss with me, feel free to contact me with my email:
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