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WO-2026092496-A1 - ANTENNA STRUCTURE AND ELECTRONIC DEVICE

WO2026092496A1WO 2026092496 A1WO2026092496 A1WO 2026092496A1WO-2026092496-A1

Abstract

Provided in the present application are an antenna structure and an electronic device. In the antenna structure, a conductive portion of a frame is used as a radiator; in the antenna structure, an electrical signal is fed to the radiator in an indirect coupling manner by means of a first feed member and a second feed member; and the feed members and the radiator are used for generating a plurality of resonances to form two resonant frequency bands, so as to expand the bandwidth. Moreover, in the resonant frequency bands, the antenna structure has good radiation efficiency and system efficiency.

Inventors

  • WU, PENGFEI
  • WANG, HANYANG

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260507
Application Date
20251029
Priority Date
20241031

Claims (20)

  1. An antenna structure, characterized in that it comprises: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first insulating gap or coupled to the floor at the first position, the frame being coupled to the floor at the second position, and the frame having a second insulating gap between the first position and the second position; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first end that is a grounded end and a second end that is an open end. The radiator and the first power supply element are spaced apart. The radiator and the first power supply element overlap at least partially along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. The second power supply element has a first open end and a second grounded end. The radiator and the second power supply element are spaced apart. The radiator and the second power supply element overlap at least partially along the first direction, and the extension direction of the second power supply element is the same as the extension direction of the radiator. A first feeding circuit, the first feeding element including a first feeding point, the first feeding circuit coupled to the first feeding point, the first feeding circuit being used to feed in a radio frequency signal of a first operating frequency band; The second feeding circuit includes a second feeding point, the second feeding device is coupled to the second feeding point, and the second feeding circuit is used to feed in the radio frequency signal of the second operating frequency band; Wherein, the length of the radiator between the projection of the first end of the first power supply component on the frame and the second insulating gap is less than or equal to half the length of the first power supply component, and the second end of the first power supply component extends toward the first position. The length of the radiator between the projection of the first end of the second feeder on the frame and the second insulating gap is less than or equal to half the length of the second feeder, and the second end of the second feeder extends toward the second position; The first feed element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feed element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band.
  2. The antenna structure according to claim 1 is characterized in that, The center frequency f1 of the first operating frequency band and the center frequency f2 of the second operating frequency band satisfy: |f2-f1|≤f1×10%, or |f2-f1|≤f2×10%.
  3. The antenna structure according to claim 1 or 2 is characterized in that, The frame is coupled to the floor at the first position, and the length D1 of the radiator between the first position and the second insulating gap and the length D2 of the radiator between the second position and the second insulating gap satisfy: D1×75%≤D2≤D1×125%.
  4. The antenna structure according to any one of claims 1 to 3 is characterized in that, The frame has the first insulating gap at the first position, and the radiator length D1 between the first position and the second insulating gap and the radiator length D2 between the second position and the second insulating gap satisfy: D2×150%≤D1.
  5. The antenna structure according to any one of claims 1 to 4 is characterized in that, The minimum distance between the first power supply component and the second power supply component is less than or equal to half the length of the first power supply component or half the length of the second power supply component.
  6. The antenna structure according to any one of claims 1 to 5 is characterized in that, The minimum distance between the first power supply component and the second power supply component is less than or equal to 5 mm.
  7. The antenna structure according to any one of claims 1 to 6 is characterized in that, The first projection and the second projection do not overlap. The first projection is the projection of the first power supply component on the frame, and the second projection is the projection of the second power supply component on the frame.
  8. The antenna structure according to any one of claims 1 to 7 is characterized in that, The physical length L0 of the radiator and the physical length L1 of the first feeder satisfy: L0×25%≤L1≤L0×50%, and/or, The physical length L0 of the radiator and the physical length L2 of the second feeder satisfy the following condition: L0×25%≤L2≤L0×50%.
  9. The antenna structure according to any one of claims 1 to 8 is characterized in that, The distance between the first feed element and the radiator is less than or equal to 5 mm, and/or, The distance between the second power supply element and the radiator is less than or equal to 5 mm.
  10. The antenna structure according to any one of claims 1 to 9 is characterized in that, Based on the fact that the resonant frequency of the first resonance and/or the resonant frequency of the second resonance is less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz. Based on the resonant frequency of the first resonance and/or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. Based on the resonant frequency of the first resonance and/or the resonant frequency of the second resonance being greater than 2GHz and less than or equal to 3GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160MHz and less than or equal to 500MHz.
  11. An antenna structure, characterized in that it comprises: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first insulating gap at the first position, the frame having a second insulating gap at the second position, and a grounding point between the first position and the second position, the grounding point being coupled to the floor; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first open end and a second grounded end. The radiator and the first power supply element are spaced apart. The radiator and the first power supply element overlap at least partially along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. The second power supply element has a first end that is grounded and a second end that is open. The radiator and the second power supply element are spaced apart. The radiator and the second power supply element overlap at least partially along the first direction, and the extension direction of the second power supply element is the same as the extension direction of the radiator. A first feeding circuit, the first feeding element including a first feeding point, the first feeding circuit coupled to the first feeding point, the first feeding circuit being used to feed in a radio frequency signal of a first operating frequency band; The second feeding circuit includes a second feeding point, the second feeding device is coupled to the second feeding point, and the second feeding circuit is used to feed in the radio frequency signal of the second operating frequency band; Wherein, the length of the radiator between the projection of the first end of the first power supply component on the frame and the grounding point is less than or equal to half the length of the first power supply component, and the second end of the first power supply component extends toward the first position. The length of the radiator between the projection of the first end of the second feeder on the frame and the grounding point is less than or equal to half the length of the second feeder, and the second end of the second feeder extends toward the second position; The first feed element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feed element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band.
  12. The antenna structure according to claim 11 is characterized in that, The length D1 of the radiator between the first position and the grounding point and the length D2 of the radiator between the second position and the grounding point satisfy: D1×75%≤D2≤D1×125%.
  13. An antenna structure, characterized in that it comprises: floor; A frame, at least partially spaced from the floor, the frame including a first position and a second position, the frame having a first gap and a second gap at the first position and the second position, respectively; A radiator, wherein the radiator is the conductive portion of the frame between the first position and the second position; The first power supply element has a first open end and a second grounded end. The radiator and the first power supply element are spaced apart and at least partially overlap along a first direction. The first direction is perpendicular to the extension direction of the radiator, and the extension direction of the first power supply element is in the same direction as the extension direction of the radiator. A first power supply circuit, wherein the first power supply component includes a first power supply point, and the first power supply circuit is coupled to the first power supply point; The first feed element and the radiator are used to generate a first resonance and a second resonance, and the first resonance and the second resonance are used to jointly support the first operating frequency band. The first power supply circuit is used to feed the first power supply component with the radio frequency signal of the first operating frequency band.
  14. The antenna structure according to claim 13 is characterized in that, The second terminal of the first power supply component is directly grounded or grounded through an inductive device; The length of the radiator between the projection of the second end of the first power feeder on the frame and the grounding point is less than or equal to half the length of the first power feeder.
  15. The antenna structure according to claim 13 or 14 is characterized in that, The physical length L0 of the radiator and the physical length L1 of the first feeder satisfy the following condition: L0×25%≤L1≤L0×50%.
  16. The antenna structure according to any one of claims 13 to 15 is characterized in that, The ratio of the length of the overlapping portion of the projection of the first feeder on the frame and the radiator to the length of the first feeder is greater than or equal to 50%.
  17. The antenna structure according to any one of claims 13 to 16 is characterized in that, The distance D between the first power supply element and the radiator is less than or equal to 5 mm.
  18. The antenna structure according to any one of claims 13 to 17 is characterized in that, The frame includes a grounding point located in the central region between the first position and the second position, and the frame is coupled to the floor at the grounding point.
  19. The antenna structure according to any one of claims 13 to 18 is characterized in that, Based on the fact that the resonant frequency of the first resonance and/or the resonant frequency of the second resonance is less than or equal to 1 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 50 and less than or equal to 160 MHz. Based on the resonant frequency of the first resonance and/or the resonant frequency of the second resonance being greater than 1 GHz and less than or equal to 2 GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 120 MHz and less than or equal to 300 MHz. Based on the resonant frequency of the first resonance and/or the resonant frequency of the second resonance being greater than 2GHz and less than or equal to 3GHz, the frequency difference between the resonant frequency of the first resonance and the resonant frequency of the second resonance is greater than or equal to 160MHz and less than or equal to 500MHz.
  20. An electronic device, characterized in that the electronic device includes an antenna structure as described in any one of claims 1 to 19.

Description

An antenna structure and its electronic device This application claims priority to Chinese Patent Application No. 202411550836.9, filed with the State Intellectual Property Office of China on October 31, 2024, entitled “An Antenna Structure and Electronic Device Thereof”, the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of wireless communication, and more particularly to an antenna structure and electronic device thereof. Background Technology As people's demand for high-speed data transmission increases, the trend in industrial design (ID) of electronic devices is towards larger screen ratios and multiple cameras. This has resulted in a significant reduction in antenna clearance and increasingly limited layout space. In the current state, for a long time, the communication frequency bands of electronic devices will coexist with those of third-generation wireless systems (3G), fourth-generation wireless systems (4G), and fifth-generation wireless systems (5G), requiring an increasing number of antennas. Traditional methods of expanding antenna efficiency bandwidth, such as increasing the size of the antenna radiator, have reached a bottleneck. Therefore, improving the antenna efficiency bandwidth while keeping the radiator size constant has become a top priority. Summary of the Invention This application provides an antenna structure and an electronic device thereof. The antenna structure utilizes the conductive portion of the frame as a radiator. The antenna structure feeds an electrical signal to the radiator via indirect coupling through a first feed element and a second feed element. In a first aspect, an antenna structure is provided, comprising: a ground plane; a frame, the frame being at least partially spaced from the ground plane, the frame including a first position and a second position, the frame having a first insulating gap or being coupled to the ground plane at the first position, the frame being coupled to the ground plane at the second position, and the frame having a second insulating gap between the first position and the second position; a radiator, the radiator being a conductive portion of the frame between the first position and the second position; a first feed element, the first feed element having a first end as a grounded end and a second end as an open end, the radiator and the first feed element being spaced apart, the radiator and the first feed element at least partially overlapping along a first direction, the first direction being perpendicular to the extension direction of the radiator, and the extension direction of the first feed element being in the same direction as the extension direction of the radiator; a second feed element, the second feed element having a first end as an open end and a second end as a grounded end, the radiator and the second feed element being spaced apart, the radiator and the second feed element at least partially overlapping along the first direction, and the extension direction of the second feed element being in the same direction as the extension direction of the radiator; the first feed element... The first feeding element includes a first feeding point, and a first feeding circuit coupled to the first feeding point. The first feeding circuit is used to feed in a radio frequency signal of a first operating frequency band. A second feeding circuit includes a second feeding point, and a second feeding circuit coupled to the second feeding point. The second feeding circuit is used to feed in a radio frequency signal of a second operating frequency band. The length of the radiator between the projection of the first end of the first feeding element on the frame and the second insulating gap is less than or equal to half the length of the first feeding element, and the second end of the first feeding element extends towards the first position. The length of the radiator between the projection of the first end of the second feeding element on the frame and the second insulating gap is less than or equal to half the length of the second feeding element, and the second end of the second feeding element extends towards the second position. The first feeding element and the radiator are used to generate a first resonance and a second resonance, which together support the first operating frequency band. The second feeding element and the radiator are used to generate a third resonance and a fourth resonance, which together support the second operating frequency band. According to embodiments of this application, the first and second ends of the radiator are grounded, forming a conformal slot antenna structure. In electronic devices, compared to the radiator (the conductive portion in the frame serves as the radiator), the first and second feed elements have a poorer radiation environment (e.g., poor clearance, close proximity to adjacent metal components), and the antenna struct