Wireless PowerCharging Technical Presentation Rob Haberstroh Roadmap Brief

Wireless Power/Charging Technical Presentation Rob Haberstroh

Roadmap � Brief History � Types of wireless power transmission � Examples � Future Outlook � Conclude

Brief History � Heinrich Hertz ◦ Electromagnetic radiation(1888) � Nicola Tesla ◦ Tesla experiment(1894) � William C. Brown ◦ Rectenna(1964)

Inductive Coupling � Current moves through wire magnetic field � Place another coil into field � Creates power/charges battery

Inductive Coupling Cars Cell Phones

Resonant Inductive Coupling � Coil of wire with capacitance plate at either end � Alternating electric current causes resonance �A second coil with same resonance frequency picks up the energy

Resonant Inductive Coupling

Microwave Power Transmission � Microwave � Rectenna transmitter sends microwaves converts into DC

Microwave Power Transmission SHARP Power from the Moon

Future Projections

Conclusion � Hertz, Tesla, Brown � Inductive Coupling � Resonant Inductive Coupling � Microwave � Projected Power Transmission Increase in the Future

References Power. ” Wikipedia. http: //en. wikipedia. org/wiki/Wireless_power � Wilson, Tracy V. “How Wireless Power Works. ” http: //electronics. howstuffworks. com/everyd ay-tech/wireless-power 1. htm � “Resonant inductive coupling. ” Wikipedia. http: //en. wikipedia. org/wiki/Resonant_induc tive_coupling � “Wireless