ANTENNA FOR WIRELESS CHARGING

• US 20150180264A1
• Filed: 12/20/2013
• Published: 06/25/2015
• Est. Priority Date: 12/20/2013
• Status: Abandoned Application

• Current Assignee: Qualcomm technologies international, ltd. (Qualcomm, Inc.)
• Original Assignee: Cambridge Silicon Radio Limited (Qualcomm, Inc.)
• Inventors: McFarthing, Anthony
• Application Number:
  US14/136,087
• Publication Number:
  US 20150180264A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/44 using equipment having another main function to serve additionally as an antenna , e.g. means for giving an antenna an aesthetic aspectH01Q1/27 - H01Q1/34 take precedence
• CPC Class Codes: H02J 50/12 of the resonant type

Abstract

The present application relates to an antenna for wireless charging, the antenna comprising a coil having a fixed inductance and a fixed area, such that the antenna is operable in a frequency range of 100 kHz to 13.56 MHz.

Claims

1. An antenna for wireless charging, the antenna comprising a coil having a fixed inductance and a fixed area, such that the antenna is operable in a frequency range of 100 kHz to 13.56 MHz.

2. An antenna according to claim 1 wherein the fixed inductance is around 8 μ

H.

3. An antenna according to claim 1 wherein the fixed area is in the range from around 1089 mm² to around 1899 mm².

4. An antenna according to claim 3 wherein the fixed area is around 1450 mm².

5. An antenna according to claim 1 wherein the coil is generally spiral in shape.

6. An antenna according to claim 1 wherein the coil is generally rectangular in shape.

7. A wirelessly rechargeable device comprising an antenna according to claim 1.

8. A wirelessly rechargeable device according to claim 7, further comprising a tuning component for tuning the antenna to a desired resonant frequency.

9. A wirelessly rechargeable device according to claim 8 wherein the tuning component comprises a variable capacitance.

10. A wireless charger comprising an antenna according to claim 1.

11. A wirelessly charger according to claim 10, further comprising a tuning component for tuning the antenna to a desired resonant frequency.

12. A wireless charger according to claim 11 wherein the tuning component comprises a variable capacitance.