Antenna plate and antenna system

Abstract

The invention provides an antenna plate and an antenna system, and relates to the technical field of antennae. The antenna plate comprises a main radiation plate, a dielectric substrate and a parasitic radiation plate, and the dielectric substrate is arranged between the main radiation plate and the parasitic radiation plate; the dielectric substrate is provided with a plurality of air cavities, the parasitic radiation plate is provided with a plurality of air guide holes, the positions of the air guide holes are in one-to-one correspondence with the positions of the air cavities, and the air guide holes are used for realizing circulation of air in the air cavities and external air. The air cavity is arranged on the antenna plate, the dielectric constant of the antenna is reduced, the antenna loss is reduced, the antenna performance is improved, and the cost is reduced; and the air guide hole design is added to change the closed air cavity into a semi-open type, so the problem of plate explosion caused by heating is solved, and the whole air cavity structure is more stable and reliable. In addition, the air cavity provided by the invention is additionally provided with a shielding ground hole design, so that isolation between different air cavity units can be realized, and the air cavity can also be used for widening the unit beam width.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to an antenna board and an antenna system. Background technique [0002] The high-speed communication technology requires that the printed circuit board (PCB) has the characteristics of small transmission loss, short transmission delay time, and small signal transmission distortion, which makes the materials used for antenna boards need to have excellent dielectric properties. The dielectric constant of air (1.00053) is second only to the dielectric constant under vacuum. Therefore, if an air cavity can be installed in the antenna board, the transmission loss can be minimized and high-quality signal transmission can be achieved. [0003] Because there is a closed cavity in the antenna board, it is easy to cause the antenna board to explode when heated, so traditional hot pressing cannot be realized, let alone reflow soldering, and there will be a series of reliability probl...

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Problems solved by technology

[0003] Because there is a closed cavity in the antenna board, it is easy to cause the antenna board to explode when heated, so traditional hot pressing cannot be realized, let alone reflow soldering, and there will be a series of reliability problems in the later stage of the product, and many antenna designs The thickness of the parasitic radiation layer is very thin, the strength is very low, there is stress concentration on the edge of the side wall of the shielding cavity, and there is a risk of plate damage when the thin plate is pressed, so it is currently impossible to directly embed the air cavity into the antenna plate to realize the air cavity antenna

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