Electronic device with antenna

• US 10,446,910 B2
• Filed: 02/20/2017
• Issued: 10/15/2019
• Est. Priority Date: 02/20/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Han, Sang Min, Kim, Young Jung
• Primary Examiner(s): Magallanes, Ricardo I
• Application Number:
  US15/437,396
• Publication Number:
  US 20170244151A1
• Time in Patent Office: 967 Days
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 21/00 Antenna arrays or systems arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/30 Arrangements for providing operation on different wavebands
• CPC Class Codes: H01Q 5/328 between a radiating element and ground
• CPC Class Codes: H01Q 5/335 at the feed, e.g. for impedance matching
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An electronic device includes a first antenna radiator configured to transmit or receive a signal of a first frequency band and a signal of a second frequency band, a second antenna radiator configured to transmit or receive the signal of the second frequency band, a matching circuit mismatched with the second antenna radiator in the first frequency band and matched with the second antenna radiator in the second frequency band, a radio frequency circuit electrically connected to the first antenna radiator and the second antenna radiator, and a processor configured to control the RF circuit such that the signal of the second frequency band is transmitted or received through the first antenna radiator and the second antenna radiator in a multi-input multi-output mode or such that the signal of the first frequency band is transmitted or received through the first antenna radiator in a single input single output mode.

Claims

1. An electronic device comprising:

a first antenna radiator configured to transmit and/or receive a signal of a first frequency band and a signal of a second frequency band;

a second antenna radiator configured to transmit and/or receive the signal of the second frequency band, wherein at least a part of the second antenna radiator is arranged to be coupled with the first antenna radiator and includes a pattern having an electrical length corresponding to the first frequency band;

a matching circuit electrically connected to the second antenna radiator, wherein the matching circuit is mismatched with the second antenna radiator in the first frequency band and is matched with the second antenna radiator in the second frequency band;

a radio frequency (RF) circuit electrically connected to the first antenna radiator and the second antenna radiator; and

a processor configured to control the RF circuit such that the signal of the second frequency band is transmitted or received through the first antenna radiator and the second antenna radiator in a multi-input multi-output (MIMO) mode or such that the signal of the first frequency band is transmitted and/or received through the first antenna radiator in a single input single output (SISO) mode,

wherein;

the matching circuit is controlled to be mismatched with the second antenna radiator when the signal of the first frequency band is transmitted or received through the first antenna radiator in the SISO mode;

the first antenna radiator includes a first metal frame and a conductive pattern;

the second antenna radiator includes a first pattern and a second pattern;

the first pattern is coupled with the conductive pattern;

the first pattern extends in a direction opposite to that of a second elongated conductive member to be longer than the second elongated conductive member; and

the first pattern exerts an influence on a resonance frequency of the first antenna radiator in the first frequency band.

2. The electronic device of claim 1, further comprising a metal frame, wherein the first antenna radiator includes a part of the metal frame and the conductive pattern electrically connected to the part of the metal frame.

3. The electronic device of claim 2, further comprising a display, wherein the conductive pattern is arranged below a black matrix area of the display.

4. The electronic device of claim 1, wherein the second antenna radiator includes:

a first pattern having the electrical length corresponding to the first frequency band; and

a second pattern extending in a different direction from a direction of the first pattern and having an electrical length corresponding to the second frequency band.

5. The electronic device of claim 4, further comprising a display, wherein the first pattern and the second pattern are arranged below a black matrix area of the display.

6. The electronic device of claim 1, wherein the first antenna radiator has the resonance frequency higher than a frequency in the first frequency band.

7. The electronic device of claim 1, wherein the first antenna radiator is configured to transmit and/or receive a Wi-Fi signal of 2.4 GHz or 5 GHz, and

wherein the second antenna radiator is configured to transmit and/or receive the Wi-Fi signal of 5 GHz.

8. An electronic device comprising:

a first antenna radiator configured to transmit and/or receive a signal of a first frequency band and a signal of a second frequency band;

a second antenna radiator configured to transmit and/or receive the signal of the first frequency band and the signal of the second frequency band, wherein the second antenna radiator includes a first pattern having an electrical length corresponding to the first frequency band, wherein a second pattern has an electrical length corresponding to the second frequency band, and wherein the first pattern is arranged to be coupled with the first antenna radiator;

a tuning circuit electrically connected to the second antenna radiator;

a radio frequency (RF) circuit electrically connected to the first antenna radiator and the second antenna radiator; and

a processor configured to control the tuning circuit such that the second antenna radiator is matched in the first frequency band when the RF circuit transmits and/or receives the signal of the first frequency band through the first antenna radiator and the second antenna radiator in a multi-input multi-output (MIMO) mode, and such that the second antenna radiator is mismatched in the first frequency band when the RF circuit transmits and/or receives the signal of the first frequency band through the first antenna radiator in a single-input single-output (SISO) mode,

wherein;

a matching circuit is controlled to be mismatched with the second antenna radiator when the signal of the first frequency band is transmitted or received through the first antenna radiator in the SISO mode;

the first antenna radiator includes a first metal frame and a conductive pattern;

the second antenna radiator includes a first pattern and a second pattern;

the first pattern is coupled with the conductive pattern;

the first pattern extends in a direction opposite to that of a second elongated conductive member to be longer than the second elongated conductive member; and

the first pattern exerts an influence on a resonance frequency of the first antenna radiator in the first frequency band.

9. The electronic device of claim 8, wherein the tuning circuit includes at least one of a switch, a tuner, or a variable capacitor.

10. The electronic device of claim 8, further comprising a feed and a ground that are electrically connected to the second antenna radiator, wherein the tuning circuit is interposed between the second antenna radiator and at least one of the feed or the ground.

11. The electronic device of claim 8, wherein, when the signal of the first frequency band is transmitted and/or received through the first antenna radiator in the SISO mode, the tuning circuit is configured to increase at least one of a bandwidth or an efficiency of the first antenna radiator in the first frequency band.

12. The electronic device of claim 8, wherein, when the signal of the first frequency band is transmitted or received through the first antenna radiator in the SISO mode, the processor is configured to control the tuning circuit such that the resonance frequency of the first antenna radiator is changed.

13. The electronic device of claim 11, wherein the processor is further configured to control the RF circuit based on information associated with a communication state received from a repeater communicating with the electronic device such that the signal of the first frequency band is transmitted or received through at least one of the first antenna radiator or the second antenna radiator in the MIMO mode or the SISO mode.

14. An electronic device comprising:

a housing including a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a side surface surrounding at least a part of a space between the first surface and the second surface;

a first elongated conductive member defining a first part of the side surface and including a first end;

a second elongated conductive member defining a second part of the side surface and including a second end adjacent to the first end;

a non-conductive member defining a third part of the side surface and inserted between the first end and the second end;

a first conductive pattern arranged inside of the housing to be closer to the first elongated conductive member than the second elongated conductive member;

a second conductive pattern arranged inside of the housing to be closer to the second elongated conductive member than the first elongated conductive member; and

a wireless communication circuit electrically connected to at least one of;

the first elongated conductive member and the first conductive pattern to transmit and/or receive a signal of a first frequency band;

or

the first conductive pattern and the second conductive pattern to transmit and/or receive a signal of a second frequency band higher than the first frequency band, wherein the second conductive pattern includes an elongated conductive part and is adjacent to the second elongated conductive member,

wherein;

the second conductive pattern includes a first pattern and a second pattern;

the first pattern is an elongated conductive part and is adjacent to the second elongated conductive member;

the second pattern has an electrical length corresponding to the second frequency band and extends in a direction different from that of the first pattern;

the first pattern is coupled with the first conductive pattern;

the first pattern extends in a direction opposite to that of the second elongated conductive member to be longer than the second elongated conductive member; and

the first pattern exerts an influence on a resonance frequency of a first antenna radiator in the first frequency band.

15. The electronic device of claim 14, wherein the wireless communication circuit includes a Wi-Fi communication circuit configured to support a 2.4 GHz band and a 5 GHz band.

16. The electronic device of claim 14, wherein the elongated conductive part extends in a direction opposite to a direction of the second conductive pattern, extends longer than the second conductive pattern, and is adjacent to the second elongated conductive member.

17. The electronic device of claim 14, wherein the first frequency band includes a band of 2.4 GHz to 2.8 GHz.

18. The electronic device of claim 14, wherein the second frequency band includes a band of 5 GHz to 5.8 GHz.