Electronic device and method for performing impedance matching according to activation of antennas

Patent metadata

Field	Value
Publication number	US-12556154-B2
Application number	US-202318153064-A
Country	US
Kind code	B2
Filing date	Jan 11, 2023
Priority date	Dec 24, 2021
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

An electronic device is provided. The electronic device includes a first antenna, a first impedance matching circuitry corresponding to the first antenna, a second antenna, a second impedance matching circuitry corresponding to the second antenna, a switch connected to the first impedance matching circuitry and the second impedance matching circuitry, and a processor controlling the switch, wherein the processor is configured to adjust, in a first state that the first antenna and the second antenna is activated based on a preset phase, impedances of the first impedance matching circuitry and the second impedance matching circuitry as a first impedance by controlling the switch, and adjust, in a second state that the first antenna of the first antenna and the second antenna is activated, an impedance of the first impedance matching circuitry as the second impedance different from the first impedance by controlling the switch.

First claim

What is claimed is:

1 . An electronic device comprising:
a first antenna; a first impedance matching circuitry corresponding to the first antenna; a second antenna; a second impedance matching circuitry corresponding to the second antenna; a switch connected to the first impedance matching circuitry and the second impedance matching circuitry; and a processor controlling the switch, wherein the processor is configured to:
adjust, in a first state that the first antenna and the second antenna is activated based on a preset phase, impedances of the first impedance matching circuitry and the second impedance matching circuitry as a first impedance by controlling the switch; and
adjust, in a second state that the first antenna among the first antenna and the second antenna is activated, an impedance of the first impedance matching circuitry as a second impedance distinct from the first impedance by controlling the switch.

2 . The electronic device of claim 1 , further comprising:
an amplifier, wherein the switch is configured to:
electronically connect, in the first state, the amplifier, among a first node and a second node of the first impedance matching circuitry, to the first node, and electronically connect the amplifier to a third node of the second impedance matching circuitry; and
electronically connect, in the second state, the amplifier to both of the first node and the second node, and electronically insulate the amplifier and the second impedance matching circuitry.

3 . The electronic device of claim 2 , wherein the first impedance matching circuitry comprises:
a first block which is disposed between the first node, and a fourth node that is electronically connected to at least one filter filtering an electronic signal associated with the first antenna, and is configured to adjust a phase of an electronic signal transmitted between the first node and the fourth node according to the preset phase; and a second block which is disposed between the second node and the fourth node, and is configured to adjust an impedance of the first impedance matching circuitry to the second impedance, based on electronic connection between the amplifier and the second node in the second state.

4 . The electronic device of claim 3 ,
wherein the first block of the first impedance matching circuitry comprises:
a first capacitor including an end connected to the first node, and another end connected to the fourth node;
a first inductor including an end connected to the first node, and another end that is grounded; and
a second inductor including an end connected to the fourth node, and another end that is grounded, and
wherein the second block of the first impedance matching circuitry comprises a second capacitor including an end connected to the second node, and another end connected to the fourth node, and having a capacitance that is half of a capacitance of the first capacitor.

5 . The electronic device of claim 3 ,
wherein the first block of the first impedance matching circuitry comprises:
a first inductor including an end connected to the first node, and another end connected to the fourth node;
a first capacitor including an end connected to the first node, and another end that is grounded; and
a second capacitor including an end connected to the fourth node, and another end that is grounded, and
wherein the second block of the first impedance matching circuitry comprises a second inductor including an end connected to the second node, and another end connected to the fourth node, and having an inductance that is multiplier of an inductance of the first inductor.

6 . The electronic device of claim 1 , further comprising:
an amplifier, wherein the switch is configured to:
electronically connect, in the second state, the amplifier to a first node of the first impedance matching circuitry;
electronically connect, in the second state, a second node of the first impedance matching circuitry to a ground node;
electronically insulate, in the second state, the amplifier and the second impedance matching circuitry; and
electronically insulate, in the first state, the second node and the ground node.

7 . The electronic device of claim 6 , wherein the first impedance matching circuitry comprises:
a first block which is disposed between the first node, and a fourth node electronically connected to at least one filter filtering an electronic signal associated with the first antenna, and configured to adjust a phase of an electronic signal transmitted between the first node and the fourth node according to a preset phase; and a second block which is disposed between the second node and a fifth node of the first block, and configured to adjust an impedance of the first impedance matching circuitry to the second impedance based on electronic connection between the amplifier and the second node in the second state.

8 . The electronic device of claim 7 ,
wherein the first block of the first impedance matching circuitry comprises:
a first inductor including an end connected to the first node, and another end connected to the fifth node;
a second inductor including an end connected to the fifth node, and another end connected to the fourth node; and
a first capacitor including an end connected to the fifth node, and another end that is grounded, and
wherein the second block of the first impedance matching circuitry comprises a second capacitor including an end connected to the second node, and another end connected to the fifth node, and having a capacitance which is ⅓ of a capacitance of the first capacitor.

9 . The electronic device of claim 7 ,
wherein the first block of the first impedance matching circuitry comprises:
a first capacitor including an end connected to the first node, and another end connected to the fifth node;
a second capacitor including an end connected to the fifth node, and another end connected to the fourth node; and
a first inductor including an end connected to the fifth node, and another end that is grounded, and
wherein the second block of the first impedance matching circuitry comprises a second inductor including an end connected to the second node, and another end connected to the fifth node, and having an inductance which is a multiplier of an inductance of the first inductor.

10 . The electronic device of claim 1 , further comprising:
a first housing; a second housing; and a hinge assembly which is disposed between the first housing and the second housing and rotatably connects the first housing and the second housing by a folding axis, wherein the first antenna is disposed on an edge of the first housing separated from the hinge assembly in parallel, and wherein the second antenna is disposed on an edge of the second housing separated from the hinge assembly in parallel.

11 . The electronic device of claim 10 , wherein the processor is further configured to:
control the switch based on the first state, in response to identifying that a distance between the edge of the first housing and the edge of the second housing is included in a preset range; and switch, in response to identification of an external object contact with the electronic device while controlling the switch based on the first state, from the first state to the second state.

12 . The electronic device of claim 10 , wherein the processor is further configured to control the switch based on the second state, in response to identifying that a distance between an edge of the first housing and an edge of the second housing is greater than a preset threshold.

13 . A method of an el

Assignees

• Samsung Electronics Co Ltd

Inventors

• Yun Himchan
• Kim Junwoo
• Lee Kyungjae
• Kim Bomyoung
• Park Sungkoo
• Hwang Soonho

Classifications

• H03H7/46

  Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source · CPC title

• H03H7/465

  having variable circuit topology, e.g. including switches · CPC title

• H03H7/40

  Automatic matching of load impedance to source impedance · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H03H7/18

  Networks for phase shifting · CPC title