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CN-122000683-A - Antenna assembly and electronic equipment

CN122000683ACN 122000683 ACN122000683 ACN 122000683ACN-122000683-A

Abstract

The application provides an antenna assembly and electronic equipment, wherein a first antenna unit comprises a first radiator and a first feed source, the first feed source is electrically connected with the first radiator, the first feed source is used for exciting the first radiator to form a first resonance mode supporting a first frequency band, current of the first resonance mode is distributed on the first radiator to form at least one current zero point, the second antenna unit is arranged adjacent to the first antenna unit, the second antenna unit comprises a second radiator and a second feed source, the second feed source is electrically connected with the second radiator, the second feed source is used for exciting the second radiator to form a second resonance mode supporting a second frequency band, and the difference between a central frequency point of the second frequency band and a central frequency point of the first frequency band is smaller than a first preset frequency band range. The first feed source excites the first radiator to form reverse current, so that the coupling influence on the adjacent second antenna unit when the first antenna unit is used as a radiation source is weakened, and the isolation between the first antenna unit and the second antenna unit is improved.

Inventors

  • WU HAO

Assignees

  • OPPO广东移动通信有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (14)

  1. 1. An antenna assembly, comprising: A first antenna unit including a first radiator and a first feed source electrically connected to the first radiator for exciting the first radiator to form a first resonance mode supporting a first frequency band, the current of the first resonance mode being distributed on the first radiator to form at least one current zero point, and The second antenna unit is arranged adjacent to the first antenna unit, the second antenna unit comprises a second radiator and a second feed source, the second feed source is electrically connected with the second radiator, the second feed source is used for exciting the second radiator to form a second resonance mode supporting a second frequency band, and the difference between the center frequency point of the second frequency band and the center frequency point of the first frequency band is smaller than a first preset frequency band range.
  2. 2. The antenna assembly of claim 1, wherein the first radiator comprises a first feed point and a first ground point, the first feed point being electrically connected to the first feed source, the first ground point being for electrically connecting to a reference ground; The current of the first resonance mode is distributed on the first radiator to form a first current zero point, and the first current zero point is located between the first feed point and the first grounding point.
  3. 3. The antenna assembly of claim 2, wherein the first radiator further comprises a second ground point, the second ground point and the first ground point being on opposite sides of the first feed point, respectively, the second ground point being for electrically connecting to a reference ground; The current distribution of the first resonance mode also forms a second current zero point on the first radiator, and the second current zero point is positioned between the first feed point and the second grounding point.
  4. 4. The antenna assembly of claim 3, wherein a distance between the first feed point and a center position of the first ground point and the second ground point is less than or equal to a first predetermined distance.
  5. 5. The antenna assembly of claim 4 wherein the first resonant mode comprises a 2-wavelength mode of a center frequency point of the first frequency band.
  6. 6. The antenna assembly of claim 4 wherein the first feed is further configured to excite a third resonant mode on the first radiator that supports a third frequency band, the third resonant mode comprising a 1-wavelength mode of a center frequency point of the third frequency band that is less than or equal to the center frequency point of the first frequency band.
  7. 7. The antenna assembly of claim 6 wherein the first antenna element further comprises a first matching circuit electrically connected between the first feed point and the first feed, the first matching circuit comprising a matching switch, a first matching branch, and a second matching branch, the third frequency band comprising a first sub-band and a second sub-band; When the first matching switch is switched to the first matching branch circuit to be electrically connected with the first feed point, a first resonance mode supporting a first sub-frequency band is formed on the first radiator; When the first matching switch is switched to the second matching branch circuit to be electrically connected with the first feeding point, a first resonance mode supporting a second sub-frequency band is formed on the first radiator.
  8. 8. The antenna assembly of claim 6, wherein the first antenna element further comprises a second matching circuit electrically connected between the first ground point and the reference ground, and/or wherein the second antenna element further comprises a third matching circuit electrically connected between the second ground point and the reference ground; The first radiator is excited by the first feed source to form a fourth resonance mode supporting a fourth frequency band, and the center frequency point of the fourth frequency band is larger than or equal to the center frequency point of the first frequency band.
  9. 9. The antenna assembly of claim 1, wherein the first radiator comprises a first feed point and a first ground point, and a second ground point, the first feed point being electrically connected to the first feed point; The distance between the first feed point and the central positions of the first grounding point and the second grounding point is smaller than or equal to a second preset distance; the current distribution of the first resonant mode forms a fourth current zero at the first feed point.
  10. 10. The antenna assembly of any one of claims 1-9, wherein the second radiator includes a third ground point, a second feed point and a first free end, the second feed point is electrically connected to the second feed source, and a current of the second resonant mode is distributed between the third ground point and the first free end.
  11. 11. The antenna assembly of any of claims 1-9, wherein the second radiator includes a third ground point and a second feed point, the second feed point being electrically connected to the second feed source, the current distribution of the second resonant mode including forming a fifth current zero between the third ground point and the second feed point.
  12. 12. The antenna assembly of claim 11, wherein the second resonant mode comprises a 1-times wavelength mode of a center frequency point of the second frequency band.
  13. 13. The antenna assembly of any one of claims 1-9, wherein the second feed is further configured to excite a fifth resonant mode supporting a fifth frequency band on the second radiator, the fifth resonant mode including a 1/2 wavelength mode of the fifth frequency band, and a center frequency point of the fifth frequency band being smaller than a center frequency point of the second frequency band.
  14. 14. An electronic device, comprising a frame and the antenna assembly according to any one of claims 1-13, wherein the frame comprises a top frame, a first side frame, a bottom frame, and a second side frame, which are sequentially connected, and the antenna assembly is disposed on any one of the top frame, the first side frame, the bottom frame, and the second side frame.

Description

Antenna assembly and electronic equipment Technical Field The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device. Background With the development of the communication industry, the number of frequency bands required to be supported by the electronic device is increasing, but the space reserved for the antennas on the portable electronic device is limited, and particularly when a plurality of antennas with the same or similar frequency bands work, how to improve the isolation between the plurality of antennas becomes a technical problem to be solved. Disclosure of Invention The application provides an antenna assembly for improving isolation between antennas and electronic equipment with the antenna assembly. In a first aspect, the present application provides an antenna assembly comprising: The antenna comprises a first antenna unit, a second antenna unit and a first antenna unit, wherein the first antenna unit comprises a first radiator and a first feed source, the first feed source is electrically connected with the first radiator, the first feed source is used for exciting the first radiator to form a first resonance mode supporting a first frequency band, and current of the first resonance mode is distributed on the first radiator to form at least one current zero point; The second antenna unit is arranged adjacent to the first antenna unit, the second antenna unit comprises a second radiator and a second feed source, the second feed source is electrically connected with the second radiator, the second feed source is used for exciting the second radiator to form a second resonance mode supporting a second frequency band, and the difference between the center frequency point of the second frequency band and the center frequency point of the first frequency band is smaller than a first preset frequency band range. In a second aspect, the present application provides an electronic device, including a frame and an antenna assembly according to the first aspect, where the frame includes a top frame, a first side frame, a bottom frame, and a second side frame that are sequentially connected, and the antenna assembly is disposed on any one of the top frame, the first side frame, the bottom frame, and the second side frame. The antenna assembly and the electronic equipment provided by the application are characterized in that a first antenna unit comprises a first radiator and a first feed source, the first feed source is electrically connected with the first radiator, the first feed source is used for exciting the first radiator to form a first resonance mode supporting a first frequency band, current of the first resonance mode is distributed on the first radiator to form at least one current zero point, the second antenna unit is arranged adjacent to the first antenna unit, the second antenna unit comprises a second radiator and a second feed source, the second feed source is electrically connected with the second radiator, the second feed source is used for exciting the second radiator to form a second resonance mode supporting a second frequency band, and the difference between a central frequency point of the second frequency band and a central frequency point of the first frequency band is smaller than a first preset frequency band range. The first feed source excites the first radiator to form reverse current, so that the coupling influence on the adjacent second antenna unit when the first antenna unit is used as a radiation source is weakened, and the isolation between the first antenna unit and the second antenna unit is improved. Drawings In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described. Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application; Fig. 2 is a schematic exploded view of an electronic device according to an embodiment of the present application; fig. 3 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application; fig. 4 is a graph of return loss S22 of the first antenna element according to an embodiment of the present application; fig. 5 is a graph of return loss S11 of the second antenna element according to an embodiment of the present application; fig. 6 is a schematic diagram showing a current distribution of a first resonant mode of a first antenna element according to an embodiment of the present application; fig. 7 is a schematic diagram of a current distribution of a first antenna unit in a first resonant mode according to an embodiment of the present application; fig. 8 is a schematic diagram of a current distribution of the first antenna element in the third resonant mode according to an embodiment of the present application; Fig. 9 is a