Flexible printed circuit board for dual mode antennas, dual mode antenna and user device

• US 9,893,424 B2
• Filed: 11/28/2016
• Issued: 02/13/2018
• Est. Priority Date: 05/31/2012
• Status: Active Grant

• Current Assignee: LS Cable And System Limited (LS Cable)
• Original Assignee: LS Cable And System Limited (LS Cable)
• Inventors: Han, Min Seok, Kim, Young Sun, You, Sung Han, Park, Lae Hyuk, Park, Un Kyu, Lee, Ji Hyung
• Primary Examiner(s): NGUYEN, HOANG V
• Application Number:
  US15/362,115
• Publication Number:
  US 20170077607A1
• Time in Patent Office: 442 Days
• CPC Class Codes: H01F 2027/2809 on stacked layers
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A dual mode antenna including: a wireless communication coil connection terminal; a wireless communication loop antenna electrically connected to the wireless communication connection terminal, and including a loop-shaped wireless communication coil; a wireless power transmission coil arranged inside the wireless communication loop antenna to be electrically disconnected from the wireless communication loop antenna, and configured to wirelessly transmit or receive power; a wireless power transmission coil connection terminal electrically connected to the wireless power transmission coil; and an extension pattern configured to electrically connect the wireless power transmission coil and the wireless power transmission coil connection terminal to each other, and arranged not to overlap with the wireless communication loop antenna.

Claims

1. A dual mode antenna comprising:

a wireless communication coil connection terminal;

a wireless communication loop antenna electrically connected to the wireless communication coil connection terminal, and including a loop-shaped wireless communication coil;

a wireless power transmission coil arranged inside the wireless communication loop antenna to be electrically disconnected from the wireless communication loop antenna, and configured to wirelessly transmit or receive power;

a wireless power transmission coil connection terminal electrically connected to the wireless power transmission coil;

an extension pattern configured to electrically connect the wireless power transmission coil and the wireless power transmission coil connection terminal to each other, and arranged not to overlap with the wireless communication loop antenna; and

an insulative sheet on which the wireless communication loop antenna is formed,

wherein a distance between the wireless power transmission coil and the wireless communication loop antenna is greater than a distance between element wires forming either the wireless power transmission coil or the wireless communication loop antenna, and

wherein at least a part of the extension pattern is formed on a first surface of the insulative sheet which is different from a second surface of the insulative sheet on which the wireless communication loop antenna is formed.

2. The dual mode antenna of claim 1, further comprising a stitching via,

wherein the stitching via comprises a connection pattern having one end electrically connected to the loop-shaped wireless communication coil through a via passing through the insulative sheet.

3. The dual mode antenna of claim 2, wherein opposite ends of the wireless power transmission coil are electrically connected to the extension pattern.

4. The dual mode antenna of claim 1, further comprising a stitching via,

wherein the stitching via comprises:

two vias configured to pass through the insulative sheet on which the wireless communication coil connection terminal and the loop-shaped wireless communication coil are formed; and

a connection pattern configured to electrically connect the two vias to each other.

5. The dual mode antenna of claim 4, further comprising a ferrite sheet formed to be in contact with at least one surface of the insulative sheet,

wherein the ferrite sheet comprises:

a first ferrite sheet formed to be in contact with a position opposite to the loop-shaped wireless communication coil on the insulative sheet; and

a second ferrite sheet formed to be in contact with a positon opposite to the wireless power transmission coil on the insulative sheet.

6. The dual mode antenna of claim 5, wherein a step adjustment slit is formed between the loop-shaped wireless communication coil and the wireless power transmission coil to adjust a step between the first ferrite sheet and the second ferrite sheet.

7. The dual mode antenna of claim 6, wherein the wireless power transmission coil is real coil.

8. A user device comprising the dual mode antenna of claim 1.