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CN-116130933-B - Antenna device

CN116130933BCN 116130933 BCN116130933 BCN 116130933BCN-116130933-B

Abstract

The invention discloses an antenna device, which comprises a first insulating layer, a defect metal layer, a second insulating layer and a plurality of radiators. The defect metal layer is arranged on the first insulating layer and is provided with a plurality of groove features which are arranged periodically. The second insulating layer is arranged on the first insulating layer and the defect metal layer. The plurality of radiators are arranged on the second insulating layer, wherein each radiator is provided with a feed-in part and a grounding part.

Inventors

  • LIN XINHONG
  • ZHENG WEICHEN

Assignees

  • 英业达科技有限公司
  • 英业达股份有限公司

Dates

Publication Date
20260505
Application Date
20211115

Claims (8)

  1. 1. An antenna device, comprising: a first insulating layer; a defective metal layer disposed on the first insulating layer, the defective metal layer having a plurality of trench features periodically arranged; a second insulating layer disposed on the first insulating layer and the defective metal layer, and The radiators are arranged on the second insulating layer, and each radiator is provided with a feed-in part and a grounding part; Wherein the plurality of trench features includes a linear plurality of first trenches extending along a first direction and separated from each other and a linear plurality of second trenches extending along a second direction and separated from each other, wherein the plurality of first trenches cross the plurality of second trenches in a lattice; Wherein the ground portions of the plurality of radiators extend through intersections of the plurality of first grooves and the plurality of second grooves.
  2. 2. The antenna device of claim 1, wherein the plurality of first grooves have a first width and the plurality of second grooves have a second width, wherein a ratio of the first width to the second width is between 1 and 5.
  3. 3. The antenna device of claim 2, wherein the first width is between 0.15 mm and 0.25 mm and the second width is between 0.05mm and 0.15 mm.
  4. 4. The antenna device of claim 1, further comprising a ground metal layer, wherein the ground metal layer is disposed under the first insulating layer, and the ground portions of the plurality of radiators are electrically connected to the ground metal layer.
  5. 5. The antenna device according to claim 4, wherein the grounding portions of the plurality of radiators pass through the first insulating layer and the second insulating layer.
  6. 6. The antenna device of claim 1, wherein the plurality of radiators comprises a plurality of first F-shaped radiators, wherein the plurality of first F-shaped radiators further comprise free ends, wherein the plurality of free ends of two of the plurality of first F-shaped radiators and the plurality of free ends of another two of the plurality of first F-shaped radiators are each oriented in opposite directions in a first axial direction.
  7. 7. The antenna device of claim 6, wherein the plurality of radiators comprises a plurality of second F-shaped radiators, wherein the plurality of second F-shaped radiators further comprise free ends, wherein the plurality of free ends of two of the plurality of second F-shaped radiators and the plurality of free ends of another two of the plurality of second F-shaped radiators are each oriented in opposite directions in a second axial direction, wherein the first axial direction is perpendicular to the second axial direction.
  8. 8. The antenna device of claim 7, wherein the plurality of first F-shaped radiators are located between the plurality of second F-shaped radiators.

Description

Antenna device Technical Field The present invention relates to an antenna device, and more particularly, to a Multi-input Multi-output (MIMO) antenna device. Background The fifth generation of mobile communication (5th generation mobile networks;5G) has been actively developed in recent years, and the mimo antenna system applied to smart phones, notebook computers and tablet computers has become a target for various phase-competing layout. How to put a multi-antenna device in a limited space, so that the multi-antenna device has good performance and simple manufacturing process, and even the modularization of the antenna device is an important subject for commodity vending. Therefore, how to provide an antenna device which has small volume, simple manufacturing process and can cover multiple frequency bands has become a research target for large amounts of funds, manpower and time for civil enterprises and academic institutions to bet. Disclosure of Invention In view of the above, an object of the present invention is to provide an antenna device that includes a first insulating layer, a defect metal layer, a second insulating layer and a plurality of radiators. The defect metal layer is arranged on the first insulating layer and is provided with a plurality of groove features which are arranged periodically. The second insulating layer is arranged on the first insulating layer and the defect metal layer. The plurality of radiators are arranged on the second insulating layer, wherein each radiator is provided with a feed-in part and a grounding part. In one or more embodiments of the present invention, the plurality of trench features includes a plurality of first trenches that are linear and a plurality of second trenches that are linear, the plurality of first trenches extending along a first direction and being separated from each other, the plurality of second trenches extending along a second direction and being separated from each other, wherein the plurality of first trenches cross the plurality of second trenches in a lattice. In one or more embodiments of the present invention, the plurality of first grooves have a first width and the plurality of second grooves have a second width, wherein a ratio of the first width to the second width is between 1 and 5. In one or more embodiments of the invention, the first width is between 0.15 mm and 0.25 mm and the second width is between 0.05 mm and 0.15 mm. In one or more embodiments of the invention, the ground portion of the radiator extends through the intersection of the first and second grooves. In one or more embodiments of the present invention, the antenna device further includes a grounding metal layer, wherein the grounding metal layer is disposed under the first insulating layer, and the grounding portion of the radiator is electrically connected to the grounding metal layer. In one or more embodiments of the present invention, the grounding portion of the radiator passes through the first insulating layer and the second insulating layer. In one or more embodiments of the present invention, the plurality of radiators includes a plurality of first F-shaped radiators, and the first F-shaped radiators further include first free ends, wherein the first free ends of two of the first F-shaped radiators and the first free ends of the other two of the first F-shaped radiators face opposite directions in the first axial direction, respectively. In one or more embodiments of the invention, wherein the plurality of radiators comprises a plurality of second F-shaped radiators, wherein the second F-shaped radiators further comprise free ends, wherein the free ends of two of the plurality of second F-shaped radiators and the free ends of the other two of the plurality of second F-shaped radiators are respectively oriented in opposite directions in a second axial direction, wherein the first axial direction is perpendicular to the second axial direction. In one or more embodiments of the invention, wherein the plurality of first F-shaped radiators are located between the plurality of second F-shaped radiators. In summary, the plurality of radiators of the antenna device have excellent isolation, for example, the plurality of radiators have at least-15 dB isolation and are applicable to a frequency band of about 3.5 Ghz. In addition, the defective metal layer can further prevent the plurality of radiators from being influenced by surrounding metal conductors, so that the antenna device can operate in a plurality of frequency bands in various environments. The above description is merely illustrative of the problems to be solved, the technical means to solve the problems, the efficacy of the invention, etc., and the specific details of the invention are set forth in the following description and related drawings. Drawings To the accomplishment of the foregoing advantages and features, the principles of the foregoing brief description will be described in more pa