Electronic device including multi-feed, multi-band antenna using external conductor

Patent metadata

Field	Value
Publication number	US-9735829-B2
Application number	US-201615050980-A
Country	US
Kind code	B2
Filing date	Feb 23, 2016
Priority date	Mar 18, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

An electronic device includes a board embedded in the electronic device, having a peripheral portion and a conductive region including a ground and a non-conductive region, an external conductor located in the peripheral portion and including a first non-segmented conductor having persistence with respect to performing an antenna function and connected to the ground. The device also includes a first antenna pattern configured to receive a first feed signal that contribute to first resonance for a first communications band, a second antenna pattern configured to receive a second feed signal that contributes to second resonance for a second communications band, and a first shield located between the first antenna pattern and the second antenna pattern that is connected to each of the ground and the first non-segmented conductor.

First claim

What is claimed is:

1. An electronic device, comprising:
a board, comprising a peripheral portion, a conductive region comprising a ground, and a non-conductive region;
an external conductor located in the peripheral portion and comprising a first non-segmented conductor connected to the ground and having persistence to perform as an antenna;
a first antenna pattern configured to receive a first feed signal and connected to the first non-segmented conductor to contribute to a first resonance of a first communications band;
a second antenna pattern configured to receive a second feed signal and connected to the first non-segmented conductor to contribute to a second resonance of a second communications band;
a first shield located between the first antenna pattern and the second antenna pattern to shield signal interference therebetween and connected to each of the ground and the first non-segmented conductor, and
a first impedance adjusting circuit located in a region between the first antenna pattern and the first non-segmented conductor and a region between the first antenna pattern and the ground,
wherein the first impedance adjusting circuit adjusts impedance in order to change a resonance frequency within the first communications band associated with the first antenna pattern, and
wherein the first impedance adjusting circuit comprises a fixing coupling element and a switch impedance circuit connected in parallel to the fixing coupling element.

2. The electronic device of claim 1 , wherein the first shield provides paths for the first and second feed signals from the first non-segmented conductor to the ground.

3. The electronic device of claim 1 , further comprising:
a circuit part configured to provide the first and second feed signals,
wherein the circuit part comprises
a first communications circuit configured to provide the first feed signal to the first antenna pattern, and
a second communications circuit configured to provide the second feed signal to the second antenna pattern.

4. The electronic device of claim 1 , wherein the switch impedance circuit comprises a switch connected to a capacitor and a switch connected to an inductor.

5. The electronic device of claim 1 , further comprising: a second impedance adjusting circuit located in a region between the first shield and the first non-segmented conductor and a region between the first shield and the ground, wherein the second impedance adjusting circuit adjusts impedance in order to change a resonance frequency within the first communications band associated with the first antenna pattern.

6. The electronic device of claim 1 , wherein the first antenna pattern is disposed in the non-conductor region of the board and an internal surface of a cover of the electronic device.

7. The electronic device of claim 1 , wherein the second antenna pattern is disposed in the non-conductor region of the board and an internal surface of a cover of the electronic device.

8. An electronic device, comprising:
a board, comprising a peripheral portion, a conductive region comprising a ground, and a non-conductive region;
an external conductor located in the peripheral portion and comprising a first non-segmented conductor connected to the ground and having persistence to perform as an antenna;
a first antenna pattern configured to receive a first feed signal and connected to the first non-segmented conductor to contribute to a first resonance of a first communications band;
a second antenna pattern configured to receive a second feed signal and connected to the first non-segmented conductor to contribute to a second resonance of a second communications band;
a third antenna pattern configured to receive a third feed signal and connected to the first non-segmented conductor to contribute to a third resonance of a third communications band;
a first shield located between the first antenna pattern and the second antenna pattern to shield signal interference therebetween and connected to the ground and the first non-segmented conductor;
a second shield located between the first antenna pattern and the third antenna pattern to shield signal interference therebetween and connected to each of the ground and the first non-segmented conductor;
a first impedance adjusting circuit located in a region between the first antenna pattern and the first non-segmented conductor and a region between the first antenna pattern and the ground; and
a second impedance adjusting circuit located in a region between the first and second shields and the first non-segmented conductor and a region between the first and second shields and the ground,
wherein the second impedance adjusting circuit comprises
a first impedance adjusting part located in a region between the first shield and the first non-segmented conductor and a region between the first shield and the ground, and
a second impedance adjusting part located in at least one of a region between the second shield and the first non-segmented conductor and a region between the second shield and the ground, and
the second impedance adjusting circuit adjusts impedance in order to change a resonance frequency within the first communications band associated with the first antenna pattern.

9. The electronic device of claim 8 , wherein the first shield provides paths for the first and second feed signals from the first non-segmented conductor to the ground, and
the second shield provides paths for the first and third feed signals from the first non-segmented conductor to the ground.

10. The electronic device of claim 8 , further comprising:
a circuit part configured to provide the first to third feed signals,
wherein the circuit part comprises
a first communications circuit configured to provide the first feed signal to the first antenna pattern;
a second communications circuit configured to provide the second feed signal to the second antenna pattern; and
a third communications circuit configured to provide the third feed signal to the third antenna pattern.

11. The electronic device of claim 8 ,
wherein the first impedance adjusting circuit adjusts impedance to change a resonance frequency within the first communications band associated with the first antenna pattern.

12. The electronic device of claim 8 , wherein the first antenna pattern is located in the non-conductor region of the board and an internal surface of a cover of the electronic device.

13. The electronic device of claim 8 , wherein the second antenna pattern is located in the non-conductor region of the board and an internal surface of a cover of the electronic device.

14. The electronic device of claim 8 , wherein the third antenna pattern is located in the non-conductor region of the board and an internal.

15. An electronic device, comprising:
a board, comprising a peripheral portion, a conductive region comprising a ground, and a non-conductive region;
an external conductor located in the peripheral portion and comprising a first non-segmented conductor connected to the ground and having persistence to perform as an antenna;
a first antenna pattern configured to receive a first feed signal and connected to the first non-segmented conductor to contribute to a first resonance of a first communications band;
a second antenna pattern configured to receive a second feed signal and connected to the first non-segmented conductor to contribute to a second resonance of a second communications band; and
a first shield located between the first antenna pattern and the second antenna pattern to shield signal interference therebetween and connected

Assignees

• Samsung Electro Mech

Inventors

• Cheon Young Min
• Jeon Dae Seong
• Yi Jun Seung
• Kim Nam Ki

Classifications

• H04B1/3827

  Portable transceivers · CPC title

• H04B1/525 Primary

  with means for reducing leakage of transmitter signal into the receiver · CPC title

• H04B2001/485

  inhibiting unwanted transmission · CPC title

• H04B1/48

  in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)} · CPC title

• H01Q5/335

  at the feed, e.g. for impedance matching · CPC title