Wireless charging transmits power through an air gap to devices for energy replenishment. It offers benefits such as reduced cost, improved usability, enhanced durability, and compatibility across different brands and models. Key techniques for wireless charging include inductive coupling, resonance coupling, and microwave radiation.

1. Wireless Charging for
Mobile Phones
By
APS
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2. Introduction
 Wireless Charging is a technique of
transmitting power through an air gap to
electrical device for the purpose of energy
replenishment.
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3. Benefits of Wireless Charging
 Reduced cost
 Improved user friendliness
 Better product durability with contact free
devices (E.g. Waterproof & Dustproof )
 Different brands & model can use same
charger
 On-demand power supply
(avoid over-charging, minimized energy costs)
 Enhanced flexibility
( E.g. use of device such as body implanted sensors)3

4. Techniques use for Wireless
Charging
 Inductive Coupling (Qi Standard)
◦ Smartphone, tablets, Bluetooth headsets,
cameras and portable power packs
 Resonance Coupling (A4WP Standard)
◦ Electric cars, Robots, Vacuum Cleaners,
Laptop computers & other items that
require large amounts of power
 Microwave radiation
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5. Induction Coupling
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6. Resonance Coupling
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7. Microwave Radiation
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8. 8

9. Use of Microwave Radiation
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Simultaneous Wireless
Information and Power Transfer
( SWIPT)

10. THANKYOU
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11. A4WP
Qi
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