Antenna module and electronic device having the same

• US 10,553,950 B2
• Filed: 12/11/2017
• Issued: 02/04/2020
• Est. Priority Date: 07/20/2017
• Status: Active Grant

• Current Assignee: Wit Co., Ltd.
• Original Assignee: WITS Company Limited
• Inventors: Won, Jae Sun, Kim, Hee Seung, Jang, Jae Hyuk, Lee, Chang Hee, Kweon, Gie Hyoun, Yoon, Hyo Jung, Roh, Young Seung
• Primary Examiner(s): Nguyen, Linh V
• Application Number:
  US15/836,965
• Publication Number:
  US 20190027827A1
• Time in Patent Office: 785 Days
• Field of Search: 343702, 343879, 343895
• CPC Class Codes: H01Q 1/22 by structural association with other equipment or articles
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: H04B 5/26 using coils

Abstract

An antenna module includes a wiring part including a second antenna wiring disposed to have a spiral shape on an insulating substrate and a first antenna wiring disposed in an internal region of the second antenna wiring and disposed in a solenoid structure; a first magnetic part disposed to be inserted into the center of the solenoid structure and having at least a portion exposed externally from the wiring part; and a second magnetic part coupled to the first magnetic part.

Claims

1. An antenna module comprising:

a wiring part including a first antenna wiring and a second antenna wiring, the second antenna wiring having a spiral shape and on an insulating substrate, and the first antenna wiring an internal region of the second antenna wiring, and disposed in and having a solenoid structure;

a first magnetic part in a central region of the solenoid structure of the first antenna wiring, the first magnetic part including a portion exposed externally from the wiring part; and

a second magnetic part coupled to the first magnetic part,

wherein the insulating substrate comprises a first substrate and a second substrate, the first substrate on a first surface of the first magnetic part and extending externally from the first magnetic part, and the second substrate on a second surface of the first magnetic part and extending externally from the first magnetic part, and

the first substrate and the second substrate are connected to each other externally of the first magnetic part.

2. The antenna module of claim 1, wherein the second magnetic part is surface-bonded to the portion of the first magnetic part.

3. The antenna module of claim 1, wherein the first antenna wiring comprises:

a first pattern on the first substrate;

a second pattern on the second substrate; and

interlayer connection conductors penetrating through the first substrate and the second substrate, the interlayer connection conductors connecting the first pattern and the second pattern to each other.

4. The antenna module of claim 3, wherein the interlayer connection conductors are spaced apart from the first magnetic part.

5. The antenna module of claim 3, wherein the insulating substrate further comprises a third substrate extending externally of the first magnetic part and interposed between the first substrate and the second substrate.

6. The antenna module of claim 5, wherein the third substrate has substantially the same thickness as the first magnetic part.

7. The antenna module of claim 1, wherein the second antenna wiring is on the first substrate.

8. The antenna module of claim 7, wherein the wiring part further comprises contact pads connected to opposite ends of the first antenna wiring and opposite ends of the second antenna wiring, respectively.

9. The antenna module of claim 8, wherein the wiring part further comprises a connection wiring on the second substrate and connecting the first antenna wiring and the contact pads with each other.

10. The antenna module of claim 1, wherein the first magnetic part and the second magnetic part have different magnetic permeabilities.

11. The antenna module of claim 1, wherein the first magnetic part and the second magnetic part comprise a same material and have different fragmentations.

12. An electronic device comprising:

an antenna module including,

a wiring part having a first antenna wiring and a second antenna wiring, the first antenna wiring having a solenoid structure, the second antenna wiring on insulating substrate and having a spiral shape,

a first magnetic part in central region of the solenoid structure of the first antenna wiring, and

a second magnetic part coupled to the first magnetic part; and

a case including an internal space, a side cover, and a rear cover,

wherein the insulating substrate comprises a first substrate and a second substrate, the first substrate on a first surface of the first magnetic part and extending externally from the first magnetic part, and the second substrate on a second surface of the first magnetic part and extending externally from the first magnetic part,

the first substrate and the second substrate are connected to each other externally of the first magnetic part,

the antenna module is in the internal space of the case, and

a side of the second magnetic part is adjacent to the side cover of the case.

13. The electronic device of claim 12, wherein a portion of the second antenna wiring is on a side surface of the first magnetic part.

14. The electronic device of claim 13, wherein

the first antenna wiring is in an internal region of the second antenna wiring.

15. The electronic device of claim 13, wherein the second antenna wiring faces the rear cover.

16. The electronic device of claim 13, wherein the electronic device is configured to conduct short range communications through the antenna module.

17. The electronic device of claim 13, wherein the electronic device comprises a cellular phone, a notebook, a tablet personal computer, or a wearable device.