Antenna module for portable terminal and portable terminal comprising same

• US 9,673,509 B2
• Filed: 07/17/2013
• Issued: 06/06/2017
• Est. Priority Date: 07/18/2012
• Status: Active Grant

• Current Assignee: Amotech Co., Ltd.
• Original Assignee: Amotech Co., Ltd.
• Inventors: Kim, Beomjin, Park, Jongho, Baek, Hyungil, Lee, Dohyung, Jung, Eulyoung
• Primary Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US14/415,234
• Publication Number:
  US 20150207207A1
• Time in Patent Office: 1,420 Days
• Field of Search: 343702, 320108
• CPC Class Codes: H01Q 1/243 with built-in antennas
• 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: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Provided are an antenna module for a portable terminal and a portable terminal including the same, wherein a slot is formed on a base sheet on which an NFC antenna and a wireless charging antenna are stacked, thereby minimizing a height difference between the NFC antenna and the wireless charging antenna. The provided antenna module for a portable terminal enables the NFC antenna and the wireless charging antenna to be stacked on an upper side of the base sheet having the slot, wherein opposite ends of the wireless charging antenna pass under a lower end of the NFC antenna while passing through the slot of the base sheet, and are connected to a power supply terminal of a portable terminal.

Claims

1. An antenna module for a portable terminal, comprising:

a base sheet in which a slot is formed;

an NFC antenna formed on an upper surface of the base sheet;

a wireless charging antenna that is formed on the upper surface of the base sheet and has an outer edge distanced from an inner edge of the NFC antenna, wherein opposite ends of the wireless charging antenna pass under the NFC antenna while passing through the slot formed in the base sheet and are connected to a power supply terminal of the portable terminal; and

an insulating sheet formed in a portion where the wireless charging antenna intersects the NFC antenna to provide an insulation between the wireless charging antenna and the NFC antenna.

2. The antenna module for a portable terminal according to claim 1, wherein:

the wireless charging antenna has a loop shape that is created by winding a wire a plurality of times, wherein opposite ends of the wire pass under the NFC antenna while passing through the slot formed in the base sheet and are connected to the power supply terminal of the portable terminal.

3. The antenna module for a portable terminal according to claim 1, further comprising:

a terminal portion that has a surface on which a plurality of terminals is formed and that is connected to one side of the base sheet.

4. The antenna module for a portable terminal according to claim 3, wherein opposite ends of the NFC antenna and the opposite ends of the wireless charging antenna are connected to the terminals formed in the terminal portion via solder media or via-hole contacts.

9. A portable terminal comprising:

a portable terminal body;

a battery pack mounted inside the portable terminal body;

a rear housing attached to a rear surface of the portable terminal body; and

an antenna module for a portable terminal according to claim 1, the antenna module being combined with any one of the portabie terminal body, the battery pack, and the rear housing.

5. An antenna module for a portable terminal, comprising:

a first base sheet in which a slot is formed;

an NFC antenna stacked on an upper surface of the base sheet;

a second base sheet disposed in the slot formed in the first base sheet;

a wireless charging antenna stacked on an upper surface of the second base sheet,

wherein opposite ends of the wireless charging antenna pass under the NFC antenna while passing through the slot formed in the first base sheet and are connected to a power supply terminal of the portable terminal; and

an insulating sheet formed in a portion where the wireless charging antenna intersects the NFC antenna to provide an insulation between the wireless charging antenna and the NFC antenna.

6. The antenna module for a portable terminal according to claim 5, wherein the second base sheet is disposed in the slot of the first base sheet and distanced from the first base sheet.

7. The antenna module for a portable terminal according to claim 5, wherein the first base sheet and the second base sheet each are formed of a shielding sheet selected from among a ferrite sheet, a polymer sheet, a nanoribbon sheet, and an iron-based sheet.

8. The antenna module for a portable terminal according to claim 7, wherein the first base sheet and the second base sheet are shielding sheets formed of different materials.