Antenna module and mobile terminal using the same

Patent metadata

Field	Value
Publication number	US-9722300-B2
Application number	US-201514702512-A
Country	US
Kind code	B2
Filing date	May 1, 2015
Priority date	Dec 9, 2014
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

The present disclosure relates to an antenna module and a mobile terminal having the same, and the antenna module may include a conductive member, a first conductive arm formed at one side of the conductive member to form a first loop along with the conductive member so as to implement a first resonant frequency, a second conductive arm formed at the other side of the conductive member to form a second loop along with the conductive member so as to implement a second resonant frequency different from the first resonant frequency, a first feeding portion formed adjacent to the first conductive arm to feed the first conductive arm and conductive member, and a second feeding portion formed adjacent to the second conductive arm to feed the second conductive arm and conductive member.

First claim

What is claimed is:

1. An antenna module, comprising:
a conductive member having a first side and a second side;
a first conductive arm formed at the first side of the conductive member to form a first loop along with the conductive member to implement a first resonant frequency;
a second conductive arm formed at the second side of the conductive member to form a second loop along with the conductive member to implement a second resonant frequency;
a third conductive arm formed with the conductive member and located between the first conductive arm and the second conductive arm to isolate the first resonant frequency from the second resonant frequency; and
a first feeding portion located between the first conductive arm and the third conductive arm, or located between the second conductive arm and the third conductive arm, to feed the first conductive arm, the second conductive arm, and the conductive member.

2. The antenna module of claim 1 , further comprising:
a first, second, and third matching module each respectively formed on the first conductive arm, the second conductive arm, and the third conductive arm.

3. The antenna module of claim 2 , further comprising:
a second feeding portion located between the first conductive arm and the third conductive arm, or located between the second conductive arm and the third conductive arm, to feed the first conductive arm, the second conductive arm and the conductive member,
wherein the second feeding portion is formed at both sides of the third conductive arm along with the first feeding portion.

4. The antenna module of claim 3 , wherein the first feeding portion and the second feeding portion are connected by a conductive line.

5. The antenna module of claim 3 , wherein the first feeding portion and the second feeding portion are formed adjacent to the first conductive arm or the second conductive arm.

6. The antenna module of claim 2 , wherein each of the first, the second, and the third matching modules comprises a capacitor.

7. The antenna module of claim 6 , wherein the third conductive arm and the third matching module form a notch filter.

8. The antenna module of claim 6 , wherein each of the first resonant frequency and the second resonant frequency varies by the capacitor and a self inductance, respectively.

9. The antenna module of claim 1 , wherein the conductive member is earthed to ground at at least one position on an outer side of portions formed with the first conductive arm and the second conductive arm.

10. The antenna module of claim 9 , wherein the location of the first conductive arm and the second conductive arm is formed at an end of the conductive member when the conductive member is earthed.

11. An antenna module, comprising:
a conductive member having a first side and a second side;
a first conductive arm formed at the first side of the conductive member to form a first loop along with the conductive member to implement a first resonant frequency;
a second conductive arm formed at the second side of the conductive member to form a second loop along with the conductive member to implement a second resonant frequency; and
an indirect feeding portion configured to indirectly feed the first conductive arm and the second conductive arm;
a first feeding element located adjacent to the first conductive arm to indirectly feed the first conductive arm; and
a second feeding element located adjacent to the second conductive arm to indirectly feed the second conductive arm,
wherein the first feeding element and the second feeding element are formed on the indirection feeding portion.

12. The antenna module of claim 11 , wherein the indirect feeding portion is formed adjacent to the first conductive arm or the second conductive arm.

13. The antenna module of claim 12 , further comprising:
a third conductive arm located between the first conductive arm and the second conductive arm of the conductive member to form a third loop along with the conductive member to isolate the first resonant frequency from the second resonant frequency.

14. The antenna module of claim 13 , a first, second, and third matching module each respectively formed on the first conductive arm, the second conductive arm, and the third conductive arm.

15. The antenna module of claim 14 , wherein each of the first, the second, and the third matching module comprises a capacitor.

16. The antenna module of claim 11 , wherein a first variable switch and a second variable switch each connected to ground are respectively formed on the first feeding element and the second feeding element to respectively tune the first resonant frequency and the second resonant frequency.

17. The antenna module of claim 11 , wherein each of the first feeding element and the second feeding element comprise an inductor and a capacitor.

18. The antenna module of claim 11 , wherein the first feeding element and the second feeding element are located on a conductive connecting member connecting the first feeding element and the second feeding element to the indirect feeding portion.

19. The antenna module of claim 11 , wherein the conductive member is earthed to ground at at least one position on an outer side of portions formed with the first conductive arm and the second conductive arm.

20. An antenna module, comprising:
a conductive member having a first side and a second side;
a first conductive arm formed at the first side of the conductive member to form a first loop along with the conductive member to implement a first resonant frequency;
a second conductive arm formed at the second side of the conductive member to form a second loop along with the conductive member to implement a second resonant frequency;
a first feeding portion formed adjacent to the second conductive arm to feed the second conductive arm and the conductive member; and
a second feeding portion formed adjacent to the first conductive arm to feed the first conductive arm and the conductive member,
wherein the first resonant frequency and the second resonant frequency are isolated by the first feeding portion and the second feeding portion.

21. The antenna module of claim 20 , wherein a first matching module and a second matching module are respectively formed on the first conductive arm and the second conductive arm.

22. The antenna module of claim 21 , wherein each of the first matching module and the second matching module comprises a capacitor.

23. A mobile terminal, comprising:
a terminal body; and
an antenna module provided on the terminal body to implement a first resonant frequency and a second resonant frequency different from the first resonant frequency,
wherein the antenna module comprises:
a conductive member formed on a lateral outside of the terminal body and having a first side and a second side;
a first conductive arm formed at the first side of the conductive member to form a first loop along with the conductive member to implement a first resonant frequency;
a second conductive arm formed at the second side of the conductive member to form a second loop along with the conductive member to implement a second resonant frequency; and
a feeding portion formed adjacent to the first conductive arm or the second conductive arm to feed the first conductive arm, the second conductive arm and the conductive member.

24. The mobile terminal of claim 23 , further comprising:
a third conductive arm located between the fi

Assignees

• Lg Electronics Inc

Inventors

• Choi Hyengcheul
• Choi Jaehyun
• You Chisang

Classifications

• H01Q1/521

  reducing the coupling between adjacent antennas · CPC title

• H01Q9/145

  by varying the electrical length · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q7/00

  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 title

• H01Q1/38

  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 title