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CN-121983774-A - Electronic equipment

CN121983774ACN 121983774 ACN121983774 ACN 121983774ACN-121983774-A

Abstract

The application discloses electronic equipment, which relates to the technical field of antennas, and comprises a metal shell, a circuit board, a first metal layer, a second metal layer and a strip-shaped radiator, wherein the metal shell is provided with a cavity, the circuit board is arranged in the cavity and is provided with a first surface and a second surface which are opposite, the first surface faces the bottom surface of the cavity, the second surface faces away from the bottom surface of the cavity, the first surface comprises a first area and a second area which are adjacent, the first surface is covered with the first metal layer, the second area is covered with the first metal layer, the first area is exposed, the strip-shaped radiator is arranged in the first area and is provided with a first end and a second end which are opposite, the first end is connected with the first metal layer, and the second end of the strip-shaped radiator is connected with the metal shell to form a loop antenna.

Inventors

  • Weng Haoyi

Assignees

  • 联想(北京)有限公司

Dates

Publication Date
20260505
Application Date
20260228

Claims (10)

  1. 1. An electronic device, comprising: A metal housing having a cavity; the circuit board is arranged in the cavity and is provided with a first surface and a second surface which are opposite to each other, wherein the first surface faces the bottom surface of the cavity, and the second surface faces away from the bottom surface of the cavity; the strip-shaped radiator is arranged in the first area and provided with a first end and a second end which are opposite, the first end is connected with the first metal layer, and the second end of the strip-shaped radiator is connected with the metal shell to form a loop antenna.
  2. 2. The electronic device of claim 1, the first metal layer being a metal ground, a first end of the strip-shaped radiator being a ground end, a second end of the strip-shaped radiator being a feed end, the second end being connected to the metal housing; The strip-shaped radiator and a mirror image strip-shaped area of the strip-shaped radiator on the metal shell are coupled through the feed end and the grounding end to form the annular antenna.
  3. 3. The electronic device of claim 2, the loop antenna to receive and transmit antenna signals at a target wavelength, the electrical length between the first end and the second end being one quarter of the target wavelength.
  4. 4. The electronic device of claim 1, wherein the metal housing has a first sidewall, wherein the circuit board is adjacent to the first sidewall, wherein the first region has a first edge that is a portion of a side of the circuit board that is parallel to and opposite the first sidewall; Wherein the strip-shaped radiator coincides with the first edge.
  5. 5. The electronic device of claim 1, wherein the second region is provided with a plurality of first grounds surrounding the first region, the first grounds being connected to the metal housing, the first grounds matching an impedance and a resonance frequency of the loop antenna.
  6. 6. The electronic device defined in claim 5 wherein the first region comprises a target top corner of the circuit board, the first region comprising second and third sides located within the first surface that intersect; The second region has a plurality of the first ground members surrounding the second and third sides.
  7. 7. The electronic device of claim 6, wherein the loop antenna is configured to receive and transmit antenna signals having a target wavelength, and wherein a spacing between adjacent first grounds is not less than 1/16 of the target wavelength and not more than 1/8 of the target wavelength.
  8. 8. The electronic device according to claim 6, wherein the plurality of first ground pieces of the second region around the third side are arranged in order in a length direction of the third side, and a distance between the first ground pieces around the third side and the third side satisfies a resonance distance so that the loop antenna has a target resonance frequency point.
  9. 9. The electronic device of claim 1, further comprising a display assembly disposed within the cavity, the circuit board being located between the display assembly and a bottom of the metal housing; a gap is formed between the display assembly and the first side wall of the metal shell, a black insulating piece is filled in the gap at the display side of the display assembly, at least part of the strip-shaped radiator is opposite to the gap, and the annular antenna can transmit and receive antenna signals based on the gap.
  10. 10. The electronic device of claim 1, further comprising a display assembly disposed within the cavity, the circuit board positioned between the display assembly and the metal housing, the surface of the display assembly facing the bottom of the cavity being covered with a second metal layer; the second surface is provided with a plurality of second grounding pieces, and the second grounding pieces are connected with the second metal layer and the metal ground in the circuit board; the second grounding pieces surround the first area on the plane of the circuit board.

Description

Electronic equipment Technical Field The present application relates to the field of antenna technologies, and in particular, to an electronic device with an antenna. Background With the continuous development of science and technology, more and more electronic devices with wireless communication function are widely applied to daily life and work of people, and bring great convenience to daily life and work of people, and become an indispensable important tool for people at present. The main component of an electronic device that enables wireless communication is an antenna. In order to meet the higher and higher performance requirements of electronic equipment, the integration level of the electronic equipment is higher and higher at present, so that the space for arranging the antenna in the electronic equipment is insufficient, the layout of the antenna is inconvenient, and the radiation efficiency of the antenna is affected. Disclosure of Invention In view of the above problems, the present application provides an electronic device, which specifically includes: an electronic device, comprising: A metal housing having a cavity; The circuit board is arranged in the cavity and is provided with a first surface and a second surface which are opposite to each other, the first surface faces the bottom surface of the cavity, and the second surface faces away from the bottom surface of the cavity; the strip-shaped radiator is arranged in the first area and provided with a first end and a second end which are opposite to each other, the first end is connected with the first metal layer, and the second end of the strip-shaped radiator is connected with the metal shell to form the annular antenna. Optionally, in the electronic device, the first metal layer is a metal ground, the first end of the strip-shaped radiator is a ground end, the second end of the strip-shaped radiator is a feed end, and the second end is connected with the metal shell; The strip-shaped radiator and a mirror image strip-shaped area of the strip-shaped radiator on the metal shell are coupled through a feed end and a grounding end to form the annular antenna. Optionally, in the electronic device, the loop antenna is configured to transmit and receive an antenna signal with a target wavelength, and an electrical length between the first end and the second end is a quarter of the target wavelength. Optionally, in the electronic device, the metal shell is provided with a first side wall, the circuit board is adjacent to the first side wall, the first area is provided with a first edge, and the first edge is a part of the side edge of the circuit board which is parallel and opposite to the first side wall; Wherein the strip-shaped radiator coincides with the first edge. Optionally, in the electronic device, the second area is provided with a plurality of first grounding pieces surrounding the first area, the first grounding pieces are connected with the metal shell, and the first grounding pieces are matched with the impedance and the resonance frequency point of the loop antenna. Optionally, in the electronic device, the first area includes a target vertex angle of the circuit board, the first area includes a second edge and a third edge located in the first surface, and the second edge and the third edge intersect; The second region has a plurality of first ground contacts surrounding the second and third sides. Optionally, in the electronic device, the loop antenna is used for receiving and transmitting antenna signals with a target wavelength, and the distance between the adjacent first grounding pieces is not smaller than 1/16 of the target wavelength and not larger than 1/8 of the target wavelength. Optionally, in the electronic device, a plurality of first grounding pieces around the third edge in the second area are sequentially arranged in a length direction of the third edge, and a distance between the first grounding pieces around the third edge and the third edge satisfies a resonance distance, so that the loop antenna has a target resonance frequency point. Optionally, in the electronic device, the electronic device further includes a display component disposed in the cavity, and the circuit board is located between the display component and a bottom of the metal housing; a gap is formed between the display assembly and the first side wall of the metal shell, a black insulating piece is filled in the gap at the display side of the display assembly, and at least part of the strip-shaped radiator is opposite to the gap and enables the annular antenna to transmit and receive antenna signals based on the gap. Optionally, the electronic device further comprises a display component arranged in the cavity, wherein the circuit board is positioned between the display component and the metal shell; The second surface is provided with a plurality of second grounding pieces which are connected with the second metal layer and the metal ground in