RECTIFYING ANTENNA ARRAY

• US 20110031817A1
• Filed: 07/09/2010
• Published: 02/10/2011
• Est. Priority Date: 08/06/2009
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kang, Seung Youl, Lee, Jin Ho, Lee, Myung Lae, Kim, Sang Gi, Lee, Jong Moo, Zyung, Tae Hyoung, Cheon, Sang Hoon, Kim, Yong Hae
• Application Number:
  US12/833,830
• Publication Number:
  US 20110031817A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas

Abstract

A rectifying antenna array includes a plurality of rectifying antennas connected in parallel. Each of the rectifying antennas includes a reception-side antenna receiving AC power through magnetic induction with a reception-side resonant antenna of a resonant wireless power receiver and a rectifier diode connected to the reception-side antenna and converting the AC power into DC power.

Claims

1. A rectifying antenna array comprising a plurality of rectifying antennas connected in parallel,

wherein each of the rectifying antennas comprises:

a reception-side antenna receiving AC power through magnetic induction with a reception-side resonant antenna of a resonant wireless power receiver; and

a rectifier diode connected to the reception-side antenna and converting the AC power into DC power.

2. The rectifying antenna array of claim 1, wherein the respective rectifying antennas receive power through magnetic inductive coupling with the reception-side resonant antenna, depending on predetermined coupling coefficients.

3. The rectifying antenna array of claim 2, wherein the predetermined coupling coefficients for the respective rectifying antennas have values approximately equal to each other and are set to satisfy the following condition:

a coupling coefficient between a power side antenna and a transmission-side resonant antenna of a resonant wireless power transmitter×

the sum of the predetermined coupling coefficients≈

a coupling coefficient between the transmission-side resonant antenna of the resonant wireless power transmitter and the reception-side resonant antenna of the resonant wireless power receiver.

4. The rectifying antenna array of claim 1, wherein the number of rectifying antennas increases in proportion to the magnitude of the AC power.