RECTIFYING CIRCUIT FOR HIGH-FREQUENCY POWER SUPPLY

• US 20160308398A1
• Filed: 12/10/2013
• Published: 10/20/2016
• Est. Priority Date: 12/10/2013
• Status: Abandoned Application

• Current Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
• Inventors: Akuzawa, Yoshiyuki, Sakai, Kiyohide, Ezoe, Toshihiro, Ito, Yuki
• Application Number:
  US15/102,111
• Publication Number:
  US 20160308398A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02M 7/06 using discharge tubes without control electrode or semiconductor devices without control electrode

Abstract

Disclosed is a rectifying circuit for high-frequency power supply that rectifies an alternating voltage at a high frequency equal to or higher than 2 MHz, the rectifying circuit for high-frequency power supply including a class E rectifier circuit that rectifies the alternating voltage inputted from a reception antenna for power transmission 10, a resonant circuit that causes the class E rectifier circuit to perform resonant switching in a switching operation at the time of rectification, a matching functional circuit that has a function of matching a resonance condition to that of the reception antenna for power transmission 10, and a function of matching the resonance condition to that of the resonant circuit, and a smoothing functional circuit that smooths the voltage rectified by the class E rectifier circuit into a direct voltage.

Claims

1. ] A rectifying circuit for high-frequency power supply that rectifies an alternating voltage at a high frequency equal to or higher 2 MHz, said rectifying circuit for high-frequency power supply comprising:

a class E rectifier circuit that rectifies said alternating voltage inputted from a reception antenna for power transmission;

a resonant circuit that causes said class E rectifier circuit to perform resonant switching in a switching operation at a time of rectification;

a matching functional circuit that has a function of matching a resonance condition to that of said reception antenna for power transmission, and a function of matching the resonance condition to that of said resonant circuit; and

a smoothing functional circuit that smooths the voltage rectified by said class E rectifier circuit into a direct voltage.

2. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said class E rectifier circuit is configured using a diode.

3. ] The rectifying circuit for high-frequency power supply according to claim 2, wherein said diode is one other than a diode for high frequency.

4. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said class E rectifier circuit is configured using a field effect transistor.

5. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said class E rectifier circuit is configured using a diode and a field effect transistor.

6. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said matching functional circuit matches the resonance condition to that of said reception antenna for power transmission according to magnetic-field resonance.

7. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said matching functional circuit matches the resonance condition to that of said reception antenna for power transmission according to electric-field resonance.

8. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said matching functional circuit matches the resonance condition to that of said reception antenna for power transmission according to electromagnetic induction.

9. ] The rectifying circuit for high-frequency power supply according to claim 1, wherein said matching functional circuit causes the resonance condition to be variable.