Wireless Power Transmission and Near Field Communication Outline

Wireless Power Transmission and Near Field Communication 國立台北科技大學 電子 程系 林丁丙 教授

Outline Introduction l Wireless Power Transmission (WPT) l Near Field Communication (NFC) Wireless Power Transmission l Literature Review l Proposed Design and Parametric Analysis Near Field Communication l Literature Review l Proposed Design and Theoretical Analysis Conclusions 1/32

Outline Introduction l Wireless Power Transmission (WPT) l Near Field Communication (NFC) Wireless Power Transmission l Literature Review l Proposed Design and Parametric Analysis Near Field Communication l Literature Review l Proposed Design and Theoretical Analysis Conclusion 2/32

Why Transmit Power by Wireless Instead of Wire? Advantages of WPT l Safety l Flexibility l Reliability Operation Frequency l 100 ~ 200 KHz (Short distance) l 6. 28 MHz and 13. 56 MHz (Middle distance) l 0. 3~ 300 GHz (Long distance) 3/32

WPT for Short Distance (1/2) Operation Frequency： 100 ~ 200 KHz Transmission Distance：Less than 5 cm Faraday’s law IS IP Equivalent Circuit IP：Primary current IS：Secondary current Schematic Diagram 4/32 H：Magnetic Field

WPT for Short Distance (2/2) Name of Organization：Wireless Power Consortium Operation Frequency： 100 ~ 200 KHz Output Power： 5 ~ 15 W Charging Methods：Magnetic Field Coupling Fixed Position 5/32 Free Position (Moving Coil) (Array Coil)

Application of WPT for Short Distance Samsung Galaxy S 4 Nokia Lumia 920 Nexus 4 6/32

WPT for Middle Distance (1/2) Name of Organization：NFC Forum Operation Frequency： 13. 56 MHz Output Power：Less than 5 W Charging Methods：Magnetic Field Coupling Transmission Distance：Less than 50 cm NFC Antenna Schematic Diagram 7/32 NFC Antenna of New HTC One

WPT for Middle Distance (2/2) Name of Organization：Alliance for Wireless Power Operation Frequency： 13. 56 MHz、6. 28 MHz Output Power： 20 ~ 50 W Charging Methods：Magnetic Resonance Current Transmission Distance：Less than 2 M Magnetic Field Schematic Diagram 8/32 Equivalent Circuit

Application of WPT for Middle Distance NFC Phone Speaker Sony Z 1 Phone Camera Lens NFC 9/32 Nokia Lumia 920

WPT for Long distance Operation Frequency： 0. 3 ~ 300 GHz Output Power： Less than 0. 5 W Charging Methods：Microwave Transmission Distance：More than 2 M Schematic Diagram of Microwave Wireless Power Transmission 10/32

Outline Introduction l Wireless Power Transmission (WPT) l Near Field Communication (NFC) Wireless Power Transmission l Literature Review l Proposed Design and Parametric Analysis Near Field Communication l Literature Review l Proposed Design and Theoretical Analysis Conclusion 11/32

Efficiency Calculation for WPT Conversion Efficiency CE: Conversion Efficiency Total Transmission Efficiency 12/32

Block Diagram for Rectenna Proposed Rectenna in currently research Za Zd Za = Zd for maximum power transfer Pi Po For IL = 0. 48 d. B Po = 0. 89 x Pi 13/32

Literature Review for WPT The new dual-diode rectenna can provide at least twice (1/2) the dc output voltage than the traditional one 14/32

Literature Review for WPT Additional matching network is needed for better power (2/2) transformation 3 rd harmonic rejection filter will cause the additional loss Matching Network 15/32

Proposed DCP Rectenna (1/3) Proposed dual circularly polarized rectenna with high-order harmonic rejection property From View Bottom View Side View 16/32