Composite antenna cell

Abstract

A composite antenna unit includes a first unit and a second unit. The first unit includes a first substrate, a first metal layer, a second substrate, a first metal patch, and a first cholesteric liquid crystal layer. The first metal layer is located on the surface of the first substrate and has a first cutout area. The first metal patch is located on the surface of the second substrate. The first cholesteric liquid crystal layer is located between the first substrate and the second substrate. The second unit includes a third substrate, a second metal layer, a third metal layer, a second metal patch, and a second cholesteric liquid crystal layer. The second metal layer is located on the surface of the third substrate and has a second cutout area. The second metal patch is located on the surface of a fourth substrate. The second cholesteric liquid crystal layer is located between the third substrate and the fourth substrate.

Claims

1. A composite antenna element, comprising: a first element, comprising: a first substrate having a first surface and a second surface opposite to each other; a first metal layer located on the first surface of the first substrate, wherein the first metal layer has a first hollow area; A second substrate, opposite to the first surface of the first substrate; a first metal patch, located on a surface of the second substrate facing the first substrate; a first cholesteric liquid crystal layer, located between the first substrate and the second substrate; and a second unit, adjacent to the first unit, comprising: a third substrate having opposing first and second surfaces; a second metal layer, located on the first surface of the third substrate; and a third metal layer, located on the second surface of the third substrate, wherein the third metal layer has a second cutout area; A fourth substrate, opposite to the second surface of the third substrate; a second metal patch, on a surface of the fourth substrate facing the third substrate; and a second cholesteric liquid crystal layer, located between the third substrate and the fourth substrate.

2. The composite antenna unit as claimed in claim 1, wherein an equivalent capacitance is formed between the second metal layer and the third metal layer and between the first metal patch and the second metal patch, configured to change the coupling characteristics between the first unit and the second unit.

3. The composite antenna unit as claimed in claim 1, wherein the first cholesterol liquid crystal layer and the second cholesterol liquid crystal layer change a molecular arrangement when energized, and maintain the molecular arrangement when not energized.

4. The composite antenna unit as claimed in claim 1, wherein a portion of the first cutout area overlaps with the first metal patch front and back, and a portion of the second cutout area overlaps with the second metal patch front and back.

5. The composite antenna element as described in claim 1, wherein the first element and the second element overlap vertically.

6. The composite antenna unit as claimed in claim 1, wherein the first unit further includes a fourth metal layer located on the second surface of the first substrate.

7. The composite antenna element as described in claim 6, wherein an equivalent capacitance is formed between the first metal layer and the fourth metal layer, configured to change the coupling characteristics between the first element and the second element.

8. The composite antenna unit as described in claim 6, wherein the first substrate and the third substrate are the same substrate and the second substrate and the fourth substrate are the same substrate.

9. The composite antenna element as claimed in claim 6, wherein the fourth metal layer and the second metal layer are the same metal layer, and the first cholesteric liquid crystal layer and the second cholesteric liquid crystal layer are the same cholesteric liquid crystal layer.

10. The composite antenna element as described in claim 1, wherein the first element and the second element overlap front and back.

11. The composite antenna unit as claimed in claim 1, wherein the first cutout area and the second cutout area are X-shaped, and the first metal patch and the second metal patch are square.

12. The composite antenna unit as claimed in claim 11, wherein the width of one end of the first cutout region is different from the width of one end of the second cutout region and the width of the first metal patch is different from the width of the second metal patch.

13. The composite antenna element as described in claim 1, wherein the first cutout area and the second cutout area are square.

14. The composite antenna unit as claimed in claim 1, wherein each of the first metal patch and the second metal patch includes a cross-shaped structure and a frame surrounding the cross-shaped structure.

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