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CN-116666945-B - Antenna device, circuit board assembly and electronic equipment

CN116666945BCN 116666945 BCN116666945 BCN 116666945BCN-116666945-B

Abstract

The application provides an antenna device, a circuit board assembly and electronic equipment. The antenna device comprises a radiator, the radiator comprises a first radiation part, a second radiation part, a first feeding point and a second feeding point, the first radiation part and the second radiation part are oppositely arranged and are electrically connected, the first feeding point is located at the first radiation part or the second radiation part, the first feeding point is used for receiving excitation to enable the first radiation part to form first distribution current and enable the second radiation part to form second distribution current, the flow direction of the first distribution current is opposite to that of the second distribution current, the second feeding point is located at the first radiation part or the second radiation part, the second feeding point is used for receiving excitation to enable the first radiation part to form third distribution current and enable the second radiation part to form fourth distribution current, and the flow direction of the third distribution current is identical to that of the fourth distribution current. The antenna device, the circuit board assembly and the electronic equipment provided by the application can realize the common radiator, so that the number of the radiators is reduced, and the miniaturization of the radiators is facilitated.

Inventors

  • WEN SICHAO

Assignees

  • OPPO广东移动通信有限公司

Dates

Publication Date
20260505
Application Date
20220218

Claims (13)

  1. 1. An antenna device, comprising: The radiator comprises a first radiation part, a second radiation part, a first feed point, a second feed point and a third radiation part, wherein the first radiation part and the second radiation part are oppositely arranged along the thickness direction and are electrically connected, a first end of the first radiation part and a first end of the second radiation part are oppositely arranged along the thickness direction, the third radiation part is connected between the first end of the first radiation part and the first end of the second radiation part, a second end of the first radiation part and a second end of the second radiation part are oppositely arranged along the thickness direction, an opening is formed between the second end of the first radiation part and the second end of the second radiation part, the first feed point is positioned at the first radiation part or the second radiation part, the first feed point is used for receiving excitation so that the radiator generates a first resonance mode, the first resonance mode forms a first distributed current at the first radiation part, forms a second distributed current at the second radiation part, the second end of the second radiation part is opposite to the second radiation part, and the second distributed current flows to the first radiation mode and the second radiation mode is formed at the second feed point, and the second current flows to the second radiation part in the opposite to the first radiation mode.
  2. 2. The antenna device according to claim 1, wherein a first end of the first radiating portion is disposed opposite to a second end of the first radiating portion, a first end of the second radiating portion is disposed opposite to a second end of the second radiating portion, the first feeding point is located at a middle line of the first end of the first radiating portion or a middle line of the first end of the second radiating portion, the second feeding point is located at a target edge of the first radiating portion or a target edge of the second radiating portion, and the target edge is an edge end connecting the first end and the second end.
  3. 3. The antenna device according to claim 2, wherein a distance between the first feeding point and a first end of the first radiating portion is less than or equal to a distance between the first feeding point and a second end of the first radiating portion when the first feeding point is located at the first radiating portion, and wherein a distance between the first feeding point and a first end of the second radiating portion is less than or equal to a distance between the first feeding point and a second end of the second radiating portion when the first feeding point is located at the second radiating portion.
  4. 4. The antenna device according to claim 2, wherein a third end of a first radiating portion is connected between a first end of the first radiating portion and a second end of the first radiating portion, a third end of a second radiating portion is connected between the first end of the second radiating portion and the second end of the second radiating portion, the radiator further comprising a fourth radiating portion connected between the third end of the first radiating portion and the third end of the second radiating portion.
  5. 5. The antenna device according to claim 4, wherein a fourth end of a first radiating portion is connected between a first end of the first radiating portion and a second end of the first radiating portion and is disposed opposite to a third end of the first radiating portion, a fourth end of a second radiating portion is connected between the first end of the second radiating portion and the second end of the second radiating portion and is disposed opposite to the third end of the second radiating portion, and the radiator further comprises a fifth radiating portion connected between the fourth end of the first radiating portion and the fourth end of the second radiating portion.
  6. 6. The antenna device according to any one of claims 1 to 5, characterized in that the first resonance mode comprises a zero order resonance mode.
  7. 7. The antenna device according to any one of claims 2 to 5, wherein the first distributed current flows in a direction in which the first end of the first radiating portion is directed toward the second end of the first radiating portion, the second distributed current flows in a direction in which the second end of the first radiating portion is directed toward the first end of the first radiating portion, or the first distributed current flows in a direction in which the second end of the first radiating portion is directed toward the first end of the first radiating portion, and the second distributed current flows in a direction in which the first end of the first radiating portion is directed toward the second end of the first radiating portion.
  8. 8. The antenna device according to any one of claims 1 to 5, wherein a flow direction of the third distribution current intersects a flow direction of the first distribution current, and a flow direction of the fourth distribution current intersects a flow direction of the second distribution current.
  9. 9. The antenna device according to any one of claims 1 to 5, wherein the first feeding point is located on the first radiating portion, the second feeding point is located on the second radiating portion, the antenna device further comprises a first feeding member and a second feeding member, the first feeding member is located on a side of the first radiating portion facing the second radiating portion, one end of the first feeding member penetrates through the second radiating portion and is electrically connected with the first feeding point, the other end of the first feeding member is electrically connected with the first signal source, the second feeding member comprises a second feeding member and a second signal source, the second feeding member is located on a side of the second radiating portion facing away from the first radiating portion, one end of the second feeding member is electrically connected with the second feeding point, and the other end of the second feeding member is electrically connected with the second signal source.
  10. 10. The antenna device according to any one of claims 1 to 5, further comprising a ground layer and at least one ground member, wherein the first radiating portion, the second radiating portion and the ground layer are sequentially arranged, at least one ground point is disposed on a side of the second radiating portion facing away from the first radiating portion, the ground member is disposed between the second radiating portion and the ground layer, one end of the ground member is electrically connected to the ground point, and the other end of the ground member is electrically connected to the ground layer.
  11. 11. The antenna device according to any one of claims 1 to 5, further comprising a dielectric substrate, wherein the first radiating portion and the second radiating portion are respectively carried on opposite sides of the dielectric substrate.
  12. 12. A circuit board assembly comprising a circuit board and an antenna device according to any one of claims 1 to 11, said antenna device being provided on said circuit board, said circuit board comprising a reference ground, said reference ground forming a ground plane for said antenna device.
  13. 13. An electronic device comprising a housing assembly and the circuit board assembly of claim 12, the circuit board assembly disposed within the housing assembly.

Description

Antenna device, circuit board assembly and electronic equipment Technical Field The present application relates to the field of communications technologies, and in particular, to an antenna device, a circuit board assembly, and an electronic device. Background With further development of communication technology, more antennas are required to be provided inside the electronic device to satisfy the corresponding communication functions. The increase in the number of antennas corresponds to the increase in the number of radiators, and the plurality of radiators need to occupy a larger stacking space, which is unfavorable for miniaturization of electronic equipment, and therefore, how to reduce the number of radiators to save the stacking space becomes a technical problem to be solved. Disclosure of Invention The application provides an antenna device with a common radiator, a circuit board assembly and electronic equipment. In one aspect, the present application provides an antenna apparatus comprising: The radiator comprises a first radiation part, a second radiation part, a first feeding point and a second feeding point, wherein the first radiation part is opposite to the second radiation part and is electrically connected with the second radiation part, the first feeding point is positioned at the first radiation part or the second radiation part and is used for receiving excitation to enable the radiator to generate a first resonance mode, the first resonance mode forms a first distributed current at the first radiation part and forms a second distributed current at the second radiation part, the flow direction of the first distributed current is opposite to the flow direction of the second distributed current, the second feeding point is positioned at the first radiation part or the second radiation part and is used for receiving excitation to enable the radiator to generate a second resonance mode, the second resonance mode forms a third distributed current at the first radiation part and forms a fourth distributed current at the second radiation part, and the flow direction of the third distributed current is the same as the flow direction of the fourth distributed current. On the other hand, the application also provides a circuit board assembly, which comprises a circuit board and the antenna device, wherein the antenna device is arranged on the circuit board, the circuit board comprises a reference ground, and the reference ground forms a grounding layer of the antenna device. In still another aspect, the present application further provides an electronic device, including a housing assembly and the circuit board assembly, where the circuit board assembly is disposed in the housing assembly. The antenna device, the circuit board assembly and the electronic equipment provided by the application comprise the radiator, because the first radiating part and the second radiating part of the radiator are oppositely arranged and electrically connected, the position of the first feeding point and the position of the second feeding point of the radiator are different, the first feeding point can receive excitation to enable the radiator to generate a first resonance mode, and the second feeding point can receive excitation to enable the radiator to generate a second resonance mode, so that the radiator can receive excitation through the first feeding point and the second feeding point at the same time, the radiator has two resonance modes, the current flow direction on the first radiating part and the current flow direction on the second radiating part in the first resonance mode are opposite, the current flow direction on the first radiating part and the current flow direction on the second radiating part in the second resonance mode are the same, and the current distribution in the two resonance modes is different, thereby being beneficial to realizing that the radiator receives and transmits electromagnetic wave signals carrying different information at the same time, namely realizing that two antennas share the same radiator, further reducing the number of the radiator, saving the stacking space and facilitating miniaturization of the antenna device, the circuit board assembly and the electronic equipment. 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 an exploded schematic view of the electronic device of FIG. 1, wherein the electronic device includes a housing assembly and a circuit board assembly; FIG. 3 is a schematic structural view of a circuit board assembly in the electronic device shown in FIG. 2, wherein the circuit board assembly includes a circuit board and an antenna device; Fig. 4 is a schematic plan view of an