Multi-mode wireless receiver apparatus and resonator circuit design

• US 10,211,646 B2
• Filed: 02/05/2018
• Issued: 02/19/2019
• Est. Priority Date: 01/09/2015
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Lin, Hung-Chih, Hsu, Yen-Hsun, Hong, Hao-Ping
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Evans, James
• Application Number:
  US15/889,136
• Publication Number:
  US 20180159340A1
• Time in Patent Office: 379 Days
• Field of Search: None
• CPC Class Codes: H01F 2038/146 in combination with capacitive coupling
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type

Abstract

A resonator circuit includes: a first inductive element and a second inductive element that is connected to the first inductive element in series; a first capacitive element, connected to a first end of the first inductive element and a first output end of the resonator circuit; and a set of second capacitive elements connected in series, the set of second capacitive elements having one end connected between the first and second inductive elements and having another end connected between the second inductive element and a second output end of the resonator circuit. The intermediate end of the set of second capacitive elements is used as a third output end of the resonator circuit.

Claims

1. A rectifier circuit for a wireless receiver apparatus, the rectifier circuit comprising:

a first set of semiconductor devices connected in series at a first input terminal of the rectifier circuit, the first input terminal being configured to receive a first output of a resonator circuit;

a second set of semiconductor devices connected in series at a second input terminal of the rectifier circuit, the second input terminal being configured to receive a second output of the resonator circuit; and

a third set of semiconductor devices connected in series at a third input terminal of the rectifier circuit,

wherein the first output of the resonator circuit has a first resonance frequency and the second output of the resonator circuit has a second resonance frequency higher than the first resonance frequency.

2. The rectifier circuit of claim 1, wherein the first, second and third sets of semiconductor devices comprise diodes.

3. The rectifier circuit of claim 1, wherein the first, second and third sets of semiconductor devices comprise switches.

4. The rectifier circuit of claim 1, wherein the first output of the resonator circuit is produced by the resonator circuit in response to a wireless power signal having a frequency in a frequency band around 100 kHz.

5. The rectifier circuit of claim 1, wherein the second output of the resonator circuit is produced by the resonator circuit in response to a wireless power signal having a frequency in a frequency band around 6.78 MHz.

6. The rectifier circuit of claim 1, wherein the third input terminal of the rectifier circuit is configured to receive a third output of the resonator circuit.

7. The wireless receiver apparatus of claim 1, wherein the third input terminal of the rectifier circuit is configured to receive a third output of the resonator circuit.

8. A wireless receiver apparatus, comprising:

a resonator circuit; and

a rectifier circuit, comprising;

a first set of semiconductor devices connected in series at a first input terminal of the rectifier circuit, the first input terminal being configured to receive a first output of the resonator circuit;

a second set of semiconductor devices connected in series at a second input terminal of the rectifier circuit, the second input terminal being configured to receive a second output of the resonator circuit; and

a third set of semiconductor devices connected in series at a third input terminal of the rectifier circuit

wherein the first output of the resonator circuit has a first resonance frequency and the second output of the resonator circuit has a second resonance frequency higher than the first resonance frequency.

9. The wireless receiver apparatus of claim 8, wherein the first, second and third sets of semiconductor devices comprise diodes.

10. The wireless receiver apparatus of claim 8, wherein the first, second and third sets of semiconductor devices comprise switches.

11. The wireless receiver apparatus of claim 8, wherein the first output of the resonator circuit is produced by the resonator circuit in response to a wireless power signal having a frequency in a frequency band around 100 kHz.

12. The wireless receiver apparatus of claim 8, wherein the second output of the resonator circuit is produced by the resonator circuit in response to a wireless power signal having a frequency in a frequency band around 6.78 MHz.