Antenna device

Abstract

An antenna device includes a first substrate, a second substrate, a dielectric layer, a first metal layer, and a patch antenna element. The first substrate has multiple vias. The second substrate is located above the first substrate. The dielectric layer is located between the first substrate and the second substrate. The first metal layer is located between the first substrate and the dielectric layer. The patch antenna element is located between the second substrate and the dielectric layer. The first metal layer has an opening that overlaps with the patch antenna element.

Claims

1. An antenna device, comprising: The first substrate has multiple vias; The second substrate is located above the first substrate; A dielectric layer is located between the first substrate and the second substrate; A first metal layer is located between the first substrate and the dielectric layer; And a patch antenna unit, located between the second substrate and the dielectric layer, and located on the surface of the second substrate facing the first substrate; And a second metal layer, located on the side of the first substrate opposite to the first metal layer, wherein the first metal layer has an opening and the opening portion overlaps the patch antenna element.

2. The antenna device as claimed in claim 1, wherein the intersection of the long central axis and the short central axis of the opening overlaps the geometric center point of the patch antenna element.

3. The antenna device as claimed in claim 1, wherein the plurality of vias comprises: A first row of vias is arranged along a first side of the first substrate; a second row of vias is arranged along a second side of the first substrate, with the second side opposite to the first side; and a third row of vias is arranged along a third side of the first substrate, with the third side connecting the first side and the second side.

4. The antenna device as claimed in claim 3 further includes a signal transceiver component coupled to a fourth side of the first substrate, wherein the fourth side is opposite to the third side.

5. The antenna device as claimed in claim 3, wherein the opening is rectangular, the long central axis of the opening is perpendicular to the first side of the first substrate, and the short central axis of the opening overlaps the centerline of the first row of vias and the second row of vias.

6. The antenna device as claimed in claim 5, wherein the minimum distance between the center point of the patch antenna element and the center point of the third row of vias is 10% to 100% of the minimum distance between the line connecting the center points of the first row of vias and the line connecting the center points of the second row of vias.

7. The antenna device as claimed in claim 3, wherein the opening is rectangular, the long central axis of the opening is parallel to the first side of the first substrate, and the long central axis of the opening does not overlap the centerline of the first row of vias and the second row of vias.

8. The antenna device as claimed in claim 7, wherein the minimum distance between the long central axis of the opening and the centerline is 2% to 20% of the minimum distance between the line connecting the center points of the first row of through holes and the line connecting the center points of the second row of through holes, and the minimum distance from the center point of the patch antenna element to the line connecting the center points of the third row of through holes is 20% to 100% of the minimum distance between the line connecting the center points of the first row of through holes and the line connecting the center points of the second row of through holes.

9. The antenna device as claimed in claim 8 further includes a switching element located between the second substrate and the dielectric layer, and electrically connected to the patch antenna element.

10. The antenna device of claim 1, wherein the patch antenna element has a larger dimension in a first direction than the opening in the first direction, the patch antenna element has a smaller dimension in a second direction than the opening in the second direction, and the second direction is perpendicular to the first direction.

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