Wireless power reception device and electronic device including the same

Abstract

A wireless power reception device includes a first resonant circuit having a first resonant frequency; a second resonant circuit connected in parallel with the first resonant circuit and having a second resonant frequency; and a rectifier configured to receive power received wirelessly by either one or both of the first resonant circuit and the second resonant circuit to output a charging current.

What is claimed is: 
     
         1 . A wireless power reception device comprising:
 a first resonant circuit having a first resonant frequency and configured to supply a first power to a rectifier; and   a second resonant circuit connected having a second resonant frequency, and configured to supply a second power to the rectifier,   wherein the rectifier is configured to rectify either one or both of the first power and the second power to output a charging current, and   the first resonant frequency and the second frequency are used in different standards, respectively.   
     
     
         2 . The wireless power reception device of  claim 1 , wherein the second resonant frequency is greater than or equal to five times the first resonant frequency. 
     
     
         3 . The wireless power reception device of  claim 1 , wherein the first resonant frequency is a Wireless Power Consortium (WPC) standard frequency or a Power Matters Alliance (PMA) standard frequency, and
 the second resonant frequency is an Alliance for Wireless Power (A4WP) standard frequency.   
     
     
         4 . The wireless power reception device of  claim 1 , wherein the first resonant circuit is connected in parallel with the second resonant circuit. 
     
     
         5 . The wireless power reception device of  claim 4 , wherein the first resonant circuit and the second resonant circuit are directly connected to each other. 
     
     
         6 . The wireless power reception device of  claim 4 , wherein the first resonant circuit and the second resonant circuit are connected to each other without a switch. 
     
     
         7 . A wireless power reception device comprising:
 a first resonant circuit configured to receive a first power which is wirelessly transmitted according to a first standard;   a second resonant circuit configured to receive a second power which is wirelessly transmitted according to a second standard different from the first standard; and   a rectifier configured to rectify either one or both of the first power and second power to output a charging current.   
     
     
         8 . The wireless power reception device of  claim 7 , wherein a frequency of the second power is greater than or equal to five times a frequency of the first power. 
     
     
         9 . The wireless power reception device of  claim 7 , wherein the first power is received by the first resonant circuit and supplied to the rectifier in response to a frequency of the first power being a first resonant frequency due to the second resonant circuit having a high impedance at the first resonant frequency relative to an impedance of the first resonant circuit at the first resonant frequency, and
 the second power is received wirelessly by the second resonant circuit and supplied to the rectifier in response to the frequency of the second power being a second resonant frequency due to the first resonant circuit having a high impedance at the second resonant frequency relative to an impedance of the second resonant circuit at the second resonant frequency.   
     
     
         10 . The wireless power reception device of  claim 7 , wherein the first standard is a Wireless Power Consortium (WPC) standard or a Power Matters Alliance (PMA) standard, and
 the second standard is an Alliance for Wireless Power (A4WP) standard.   
     
     
         11 . An electronic device comprising:
 a first resonant circuit having a first resonant frequency and configured to supply a first power to a rectifier; and   a second resonant circuit connected having a second resonant frequency, and configured to supply a second power to the rectifier; and   a battery configured to receive a charging current to be charged by the charging current,   wherein the rectifier is configured to rectify either one or both of the first power and the second power to output the charging current, and   the first resonant frequency and the second frequency are used in different standards, respectively.   
     
     
         12 . The electronic device of  claim 11 , wherein the second resonant frequency is greater than or equal to five times the first resonant frequency. 
     
     
         13 . The electronic device of  claim 11 , wherein the first resonant frequency is a Wireless Power Consortium (WPC) standard frequency or a Power Matters Alliance (PMA) standard frequency, and
 the second resonant frequency is an Alliance for Wireless Power (A4WP) standard frequency.   
     
     
         14 . The electronic device of  claim 11 , wherein the first resonant circuit is connected in parallel with the second resonant circuit. 
     
     
         15 . The electronic device of  claim 14 , wherein the first resonant circuit and the second resonant circuit are directly connected to each other. 
     
     
         16 . The electronic device of  claim 14 , wherein the first resonant circuit and the second resonant circuit are connected to each other without a switch.