Electronic device comprising antenna

Patent metadata

Field	Value
Publication number	US-10530041-B2
Application number	US-201615374213-A
Country	US
Kind code	B2
Filing date	Dec 9, 2016
Priority date	Mar 10, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

An electronic device is provided. The electronic device includes an antenna radiator, a first feeding terminal configured to supply a first frequency band signal to the antenna radiator, a second feeding terminal configured to supply a second frequency band signal to the antenna radiator, and a plurality of grounds electrically connected with the antenna radiator. The first feeding terminal is connected with the antenna radiator and at least one of the plurality of grounds through a passive circuit including a plurality of electrical paths.

First claim

What is claimed is:

1. An electronic device comprising:
an antenna radiator;
a first feeding terminal and a second feeding terminal configured to feed the antenna radiator;
a passive circuit arranged between the first feeding terminal and the antenna radiator; and
a communication circuit electrically connected with the first feeding terminal and the second feeding terminal,
wherein the communication circuit is configured to:
transmit and receive a first frequency band signal through a first electrical path that is formed of the first feeding terminal and at least a part of the antenna radiator, and
transmit and receive a second frequency band signal through a second electrical path that is formed of the second feeding terminal and at least a part of the antenna radiator,

wherein the passive circuit is configured to enhance isolation between the first frequency band signal and the second frequency band signal,
wherein the passive circuit comprises delta-connected three reactance elements forming a first node, a second node and a third node, and
wherein the first node, the second node, and the third node between the delta-connected three reactance elements are electrically connected with a first ground, the first feeding terminal, and the antenna radiator, respectively.

2. The electronic device of claim 1 , wherein the delta-connected three reactance elements are dominant with capacitive components.

3. The electronic device of claim 2 , wherein capacitance of a reactance element arranged between the first node and the third node is higher than that of a reactance element arranged between the second node and the third node.

4. The electronic device of claim 1 , wherein the passive circuit further comprises a reactance element that is arranged between the first ground and the first node in series.

5. The electronic device of claim 4 , wherein the reactance element arranged between the first ground and the first node is dominant with an inductive component.

6. The electronic device of claim 1 , wherein the passive circuit further comprises a reactance element that is arranged between the second node and the first feeding terminal in series.

7. The electronic device of claim 6 , wherein the reactance element arranged between the second node and the first feeding terminal is dominant with a capacitive component.

8. An electronic device comprising:
a first antenna radiator;
a second antenna radiator;
a first insulating member arranged between the first antenna radiator and the second antenna radiator;
a first feeding terminal and a second feeding terminal configured to feed the first antenna radiator;
a passive circuit arranged between the first feeding terminal and the first antenna radiator; and
a communication circuit electrically connected with the first feeding terminal and the second feeding terminal,
wherein the communication circuit is configured to:
transmit and receive a first frequency band signal through a first electrical path that is formed of the first feeding terminal, the first antenna radiator, and the second antenna radiator, and
transmit and receive a second frequency band signal through a second electrical path that is formed of the second feeding terminal and the first antenna radiator,

wherein the passive circuit is configured to enhance isolation between the first frequency band signal and the second frequency band signal,
wherein the passive circuit comprises delta-connected three reactance elements forming a first node, a second node and a third node, and
wherein the first node, the second node, and the third node between the delta-connected three reactance elements are electrically connected with a first ground, the first feeding terminal, and the antenna radiator, respectively.

9. The electronic device of claim 8 , wherein the first antenna radiator and the second antenna radiator are electrically coupled via the first insulating member.

10. The electronic device of claim 8 , further comprising:
a third antenna radiator electrically coupled with the first antenna radiator; and
a second insulating member arranged between the first antenna radiator and the third antenna radiator,
wherein the second feeding terminal, the first antenna radiator, and the third antenna radiator are configured to form a third electrical path for transmitting or receiving a third frequency band signal.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jung Sang Min
• Soh Min Ho
• Kim Hyun
• Oh Gwang Un

Classifications

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q5/328

  between a radiating element and ground · CPC title

• H01Q1/42

  Housings not intimately mechanically associated with radiating elements, e.g. radome · CPC title