Patch antenna

By introducing a probe structure into the patch antenna and adjusting the distance between the probe and the conductive layer, the issues of bandwidth and gain were resolved, achieving a dual optimization of cost and performance.

CN224520184UActive Publication Date: 2026-07-17UNICTRON TECH CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
UNICTRON TECH CORP
Filing Date
2025-07-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing patch antennas have low bandwidth and low unit gain, making it difficult to meet diverse RF function requirements, while also having high manufacturing costs.

Method used

By introducing a probe structure into the patch antenna, controlling the length of the probe and its distance from the first conductive layer, the input impedance can be adjusted, reducing the number of matching impedance components, simplifying the production process, and lowering costs.

Benefits of technology

This achieves bandwidth expansion and gain enhancement, while reducing antenna height and production costs.

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Patent Text Reader

Abstract

The utility model discloses a patch antenna, include: antenna insulating layer, first conductive layer, second conductive layer and probe stick. Antenna insulating layer has opposite first surface and second surface. First conductive layer is located on the first surface of antenna insulating layer. Second conductive layer is located on the second surface of antenna insulating layer, and has a through hole. The probe stick is inserted in the antenna insulating layer through the through hole. Among them, the probe stick has opposite first end and second end. The first end of probe stick is located between first conductive layer and second conductive layer and is spaced apart from first conductive layer. The second end of probe stick is located on the other side of second conductive layer relative to antenna insulating layer.
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Claims

1. A patch antenna, characterized in that, include: An antenna insulation layer having a first surface and a second surface opposite to each other; A first conductive layer is located on the first surface; A second conductive layer, located on the second surface, having a through hole; and A probe is inserted into the antenna insulating layer through the through hole, wherein the probe has a first end and a second end opposite to each other, the first end being located between the first conductive layer and the second conductive layer and spaced apart from the first conductive layer, and the second end being located on the other side of the second conductive layer opposite to the antenna insulating layer.

2. The patch antenna of claim 1, wherein, The ratio of the distance between the first end and the first conductive layer to the thickness of the antenna insulating layer can be 1 to 7:

10.

3. The patch antenna of claim 2, wherein, The ratio of the distance between the first end and the first conductive layer to the thickness of the antenna insulating layer can be 1 to 1.2:

5.

4. The patch antenna of claim 1, wherein, The distance between the first end and the first conductive layer is greater than 0 mm and less than 3 mm.

5. The patch antenna of claim 1, wherein, The probe includes: A single rod; and A fixing ring is coupled to the side surface of the rod, wherein a section of the rod from the coupling point with the fixing ring to the first end is embedded in the antenna insulation layer.

6. The patch antenna of claim 5, wherein, The retaining ring is fixed to the second surface.

7. The patch antenna of claim 5, wherein, Including: A third conductive layer is located on the second surface and within the through hole, wherein the second conductive layer is spaced apart from the third conductive layer, and the retaining ring is fixed to the third conductive layer.

8. The patch antenna of claim 1, wherein, The second conductive layer is rectangular.

9. The patch antenna as described in claim 1, characterized in that, The first conductive layer is a rectangle with multiple truncated corners.

10. The patch antenna of claim 9, wherein, The number of the multiple cuts is two, and the two cuts are located at opposite corners of the rectangle.

11. The patch antenna of claim 1, wherein The size of the second conductive layer is larger than the size of the first conductive layer.