Electronic device and antenna

• US 10,270,171 B2
• Filed: 11/04/2016
• Issued: 04/23/2019
• Est. Priority Date: 11/13/2015
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Mobile Communications Incorporated (Sony Group Corp.)
• Inventors: Yong, Check Chin, Nagae, Tatsuya
• Primary Examiner(s): Han, Jessica
• Assistant Examiner(s): Bouizza, Michael M
• Application Number:
  US15/344,176
• Publication Number:
  US 20170141470A1
• Time in Patent Office: 900 Days
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/248 provided with an AC/DC converting device, e.g. rectennas
• CPC Class Codes: H01Q 1/38 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 Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/20 characterised by the operating wavebands
• CPC Class Codes: H01Q 5/314 using frequency dependent circuits or components, e.g. trap circuits or capacitors
• CPC Class Codes: H01Q 5/35 using two or more simultaneously fed points
• CPC Class Codes: H01Q 7/00 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 Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

There is provided an electronic device including: a first antenna for wireless communication; a second antenna for near-field communication that forms a loop by being used together with the first antenna, at least a part of the second antenna being positioned at a back surface of a display region of a display; and a first filter that is provided in the first antenna or the second antenna, passes a signal of a frequency band used in the near-field communication to the first antenna, and blocks inflow of the signal of the frequency band used in the wireless communication into the second antenna.

Claims

1. An electronic device, comprising:

a first antenna for wireless communication, the first antenna positioned on a periphery of the electronic device and outside of a display region of a display;

a second antenna for near-field communication, the second antenna positioned separate from the first antenna and at a back surface of the display region of the display; and

a first filter and a second filter, the first antenna and the second antenna being connected via the first filter and the second filter so that one turn of a loop antenna for the near-field communication is formed by a combination of the first antenna, the second antenna, the first filter and the second filter, wherein

the first filter and the second filter respectively pass a first signal of a first frequency band used in the near-field communication to the first antenna, and

the first filter and the second filter respectively block inflow of a second signal of a second frequency band used in the wireless communication into the second antenna.

2. The electronic device according to claim 1, further comprising:

at least one communication characteristic adjustment unit that is connected to the first antenna and adjusts a characteristic of the wireless communication.

3. The electronic device according to claim 2, wherein the communication characteristic adjustment unit includes a third filter that passes the second signal of the frequency band used in the wireless communication.

4. The electronic device according to claim 2, wherein the communication characteristic adjustment unit includes a matching circuit.

5. The electronic device according to claim 1, wherein the near-field communication is near-field non-contact communication or near-field non-contact charging.

6. The electronic device according to claim 5, wherein a first antenna feed for the near-field non-contact communication or the near-field non-contact charging is connected to the second antenna.

7. The electronic device according to claim 5, wherein the second antenna is shared in the near-field non-contact communication and the near-field non-contact charging.

8. The electronic device according to claim 7, wherein a first antenna feed for the near-field non-contact communication and a second antenna feed for the near-field non-contact charging are connected to the second antenna.

9. The electronic device according to claim 1, wherein at least a part of the second antenna is positioned at an orientation perpendicular to the display.

10. The electronic device according to claim 9, wherein the second antenna is positioned at an orientation perpendicular to the display.

11. The electronic device according to claim 1, wherein the wireless communication is wireless communication by a cellular method.

12. The electronic device according to claim 1, wherein the wireless communication is wireless communication in a satellite positioning system.

13. The electronic device according to claim 1, wherein the wireless communication is wireless communication by a wireless LAN.

14. The electronic device according to claim 1, wherein at least a back surface is covered with a metal plate.

15. The electronic device according to claim 14, wherein a slit is provided in a side that is a part of the metal plate and corresponds to a position at which the first antenna is provided.

16. The electronic device according to claim 1, wherein a front surface is covered with plastic or glass.

17. The electronic device according to claim 1, wherein at least a part of the first antenna is formed in a frame of a side surface.

18. The electronic device according to claim 1, wherein the second antenna is provided between the display and a support member of the display or a circuit substrate that operates the electronic device.

19. The electronic device according to claim 1, wherein

one end of the first antenna is connected to the first filter,

another end of the first antenna is connected to the second filter,

one end of the second antenna is connected to the first filter, and

another end of the second antenna is connected to the second filter.