Search

CN-224232936-U - Slot antenna device and electronic equipment

CN224232936UCN 224232936 UCN224232936 UCN 224232936UCN-224232936-U

Abstract

The utility model discloses a slot antenna device and electronic equipment, which comprise a plate structure, a variable capacitance device and a voltage converter, wherein the plate structure comprises a first long hole and a feed point, and the first long hole penetrates through the plate surface of the plate structure along the thickness direction of the plate structure. The feeding point is positioned on the plate surface of the plate structure and is positioned on one side of the first long hole along the width direction of the first long hole. Along the length direction of the first long hole, the variable capacitance device is arranged at intervals with the feed point and is electrically connected with the plate structure. The voltage converter is electrically connected with the variable capacitance device and is used for changing the capacitance value of the variable capacitance device. By adopting the slot antenna device provided by the utility model, the voltage value of the voltage converter can be changed, so that the capacitance value of the variable capacitance device is changed, the overall capacitance value of the antenna device is changed, and the low-frequency resonance of the antenna device is offset, so that the bandwidth of the antenna device can be effectively widened, and the adaptability of the slot antenna device to different frequency band information is improved.

Inventors

  • WU LIYANG
  • YAN FUGUI
  • MAO YUJIE
  • MAO SHENWEI
  • ZHOU YANGHAO
  • FANG YONGJUN
  • WANG MINGHUI
  • ZHANG KUN
  • ZHU QIFENG

Assignees

  • 浙江大华技术股份有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (10)

  1. 1. A slot antenna device, characterized by comprising a plate structure (1), a varactor device (2) and a voltage converter, wherein: The plate structure (1) comprises a first long hole (11) and a feeding point (12), and the first long hole (11) penetrates through a plate surface (13) of the plate structure (1) along the thickness direction of the plate structure (1); the feeding point (12) is positioned on the plate surface (13) of the plate structure (1), and along the width direction of the first long hole (11), the feeding point (12) is positioned on one side of the first long hole (11); Along the length direction of the first long hole (11), the variable capacitance device (2) is arranged at intervals with the feed point (12) and is electrically connected with the plate structure (1); The voltage converter is electrically connected with the variable capacitance device (2) and is used for changing the capacitance value of the variable capacitance device (2).
  2. 2. Slot antenna device according to claim 1, characterized in that the varactor device (2) is located at one end of the first slot (11) along the length direction of the first slot (11), and that the centre of the first slot (11) is located between the varactor device (2) and the feed point (12).
  3. 3. The slot antenna device according to claim 1, characterized in that the first elongated hole (11) comprises a first side wall (111) and a second side wall (112), and the first side wall (111) and the second side wall (112) intersect, and that the angle of the first side wall (111) and the second side wall (112) is α, and that α satisfies 0 ° < α <180 °.
  4. 4. A slot antenna arrangement according to claim 3, characterized in that the length of the first elongated hole (11) is a, and a fulfils 150mm +.a +.170 mm.
  5. 5. A slot antenna arrangement according to claim 3, characterized in that the width of the first slot (11) is B, and B is such that 2mm +.b +.3 mm.
  6. 6. The slot antenna device according to claim 1, characterized in that the variable capacitance device (2) is a variable capacitor, one contact of which is electrically connected to one side of the first elongated hole (11) and the other contact of which is electrically connected to the other side of the first elongated hole (11) in the width direction of the first elongated hole (11).
  7. 7. An electronic device comprising a main board (01), a display screen (02) and a slot antenna arrangement as claimed in any one of claims 1-6, wherein: Along the thickness direction of the plate structure (1), the plate structure (1) is positioned between the main board (01) and the display screen (02), and the plate structure (1) is electrically connected with the main board (01) and the display screen (02); Along the thickness direction of the plate structure (1), the projection of the first long hole (11) on the extension surface of the display screen (02) is positioned outside the edge of the display screen (02).
  8. 8. The electronic device according to claim 7, characterized in that the electronic device further comprises a mounting portion (03), the mounting portion (03) being located between the board structure (1) and the display screen (02) in a thickness direction of the board structure (1), and the board structure (1) being electrically connected to the mounting portion (03); The mounting part (03) comprises a second long hole (031), and along the thickness direction of the plate structure (1), the projection of the first long hole (11) on the mounting part (03) is located in the edge of the second long hole (031).
  9. 9. The electronic device according to claim 8, wherein the mounting portion (03) is made of metal, and a conductive adhesive is filled between the plate structure (1) and the mounting portion (03).
  10. 10. The electronic device according to claim 7, characterized in that the motherboard (01) comprises a tuning network circuit, which is electrically connected with the feed point (12).

Description

Slot antenna device and electronic equipment Technical Field The present utility model relates to the field of communications technologies, and in particular, to a slot antenna device and an electronic device. Background In a wireless communication device, a slot antenna is a planar structure, which is just in line with the trend and requirement of the development of the modern wireless communication system, and thus, the demand of the slot antenna is increasing. However, the bandwidth of the conventional slot antenna is relatively narrow, so that the conventional slot antenna can only meet the use requirement in a small frequency range, which results in relatively poor adaptability of the slot antenna to different products. Therefore, how to widen the bandwidth of the slot antenna for improving the adaptability of the slot antenna to different products has become a problem to be solved by those skilled in the art. Disclosure of utility model The utility model provides a slot antenna device and electronic equipment, which are used for widening the bandwidth of a slot antenna and improving the adaptability of the slot antenna to different products. In a first aspect, the present utility model provides a slot antenna device, including a plate structure, a varactor device, and a voltage converter, where the plate structure includes a first long hole and a feeding point, and the first long hole penetrates through a plate surface of the plate structure along a thickness direction of the plate structure. The feeding point is positioned on the plate surface of the plate structure and is positioned on one side of the first long hole along the width direction of the first long hole. Along the length direction of the first long hole, the variable capacitance device is arranged at intervals with the feed point and is electrically connected with the plate structure. The voltage converter is electrically connected with the variable capacitance device and is used for changing the capacitance value of the variable capacitance device. When the slot antenna device provided by the utility model is adopted, when the base station or the workstation sends the frequency band information with different signal intensities to the antenna, the voltage value of the voltage converter can be changed, so that the capacitance value of the variable capacitance device is changed, the integral capacitance value of the antenna device is changed, the low-frequency resonance of the antenna device is shifted, the bandwidth of the antenna device can be effectively widened, and the adaptability of the slot antenna device to different frequency band information is improved. In one possible implementation of the present utility model, the varactor is located at one end of the first long hole along the length direction of the first long hole, and the center of the first long hole is located between the varactor and the feeding point. Therefore, the low-frequency resonance can be greatly shifted only by enabling the capacitance-variable device to provide a smaller capacitance value, so that the bandwidth of the antenna device is widened. In one possible implementation of the present utility model, the first long hole includes a first side wall and a second side wall, the first side wall and the second side wall intersect, the first side wall and the second side wall have an included angle α, and α satisfies 0 ° < α <180 °. The antenna device is used for meeting the bandwidth requirement of frequency band information received by the antenna device and the installation requirement of different electronic equipment. In one possible implementation of the present utility model, the length of the first long hole is A, and A satisfies that 150 mm≤A≤170 mm. The antenna device is used for meeting the bandwidth requirement of frequency band information received by the antenna device and the installation requirement of different electronic equipment. In one possible implementation of the utility model, the width of the first long hole is B, and B is 2 mm≤B≤3 mm. The antenna device is used for meeting the bandwidth requirement of frequency band information received by the antenna device and the installation requirement of different electronic equipment. In one possible implementation of the present utility model, the variable capacitance device is a variable capacitor, and one contact of the variable capacitor is electrically connected to one side of the first long hole along the width direction of the first long hole, and the other contact of the variable capacitor is electrically connected to the other side of the first long hole. So as to achieve the purpose of changing the overall capacitance value of the antenna device through the variable capacitance device. In a second aspect, the present utility model provides an electronic device, including a motherboard, a display screen, and the slot antenna device according to the first aspect, where, along a thickne