Phased-array antenna and multi-face array antenna device
A phased-array antenna and a multi-face array antenna device are provided. The phased-array antenna includes a liquid crystal cell. The liquid crystal cell includes an upper substrate, a lower substrate and a liquid crystal layer. The upper substrate includes a first base substrate, a plurality of first bias electrodes arranged at a first surface of the first base substrate, and a plurality of radiating elements arranged at a second surface of the first base substrate. The lower substrate includes a second base substrate, a plurality of second bias electrodes arranged at a second surface of the second base substrate, and a ground electrode arranged at a first surface of the second base substrate. The first base substrate and the second base substrate of the liquid crystal cell are arc-shaped substrates so that the radiating elements are not coplanar. In addition, the radiating elements are arranged at a convex surface.
1. A phased-array antenna, comprising a liquid crystal cell, wherein
the liquid crystal cell comprises an upper substrate, a lower substrate arranged opposite to the upper substrate to form a cell, and a liquid crystal layer arranged between the upper substrate and the lower substrate;
the upper substrate comprises a first base substrate, a plurality of first bias electrodes arranged at a first surface of the first base substrate, and a plurality of radiating elements arranged at a second surface of the first base substrate opposite to the first surface of the first base substrate;
the lower substrate comprises a second base substrate, a plurality of second bias electrodes arranged at a second surface of the second base substrate, and a ground electrode arranged at a first surface of the second base substrate opposite to the second surface of the second base substrate;
the first base substrate and the second base substrate are both arc-shaped substrates;
the first surface of the first base substrate and the first surface of the second base substrate are concave surfaces, the second surface of the first base substrate and the second surface of the second base substrate are convex surfaces, and the first surface of the first base substrate is arranged opposite to the second surface of the second base substrate;
the plurality of first bias electrodes is arranged in at least one column on the first base substrate, and the first bias electrodes in each column comprise a plurality of first electrodes spaced apart from each other in a first direction;
the plurality of second bias electrodes is arranged in at least one column on the second base substrate, and the second bias electrodes in each column comprise a plurality of second electrodes spaced apart from each other in the first direction;
in the case that the first bias electrodes are arranged in a plurality of columns, the columns of first bias electrodes are spaced apart from each other in a second direction perpendicular to the first direction;
the first bias electrodes in each column correspond to the second bias electrodes in a respective one column, and a projection of the first bias electrodes in each column onto a tangent plane of the second surface of the second base substrate and a projection of the second bias electrodes in the respective one column corresponding to the first bias electrodes onto the tangent plane are located in an identical line; and
among the first bias electrodes in each column and the second bias electrodes in the respective one column corresponding to the first bias electrodes, the first electrodes and the second electrodes are arranged alternately in the first direction, a distance between two adjacent first electrodes is smaller than a length of one of the second electrodes in the first direction, and a distance between two adjacent second electrodes is smaller than a length of one of the first electrodes in the first direction.
2. The phased-array antenna according to claim 1 , wherein
a first conductive layer is arranged on the first base substrate, and the plurality of first electrodes is arranged on the first conductive layer; and
a second conductive layer is arranged on the second base substrate, and the plurality of second electrodes is arranged on the second conductive layer.
3. The phased-array antenna according to claim 2 , wherein the first conductive layer is an indium tin oxide layer.
4. The phased-array antenna according to claim 2 , wherein the second conductive layer is an indium tin oxide layer or a metal layer.
5. The phased-array antenna according to claim 1 , wherein one of the radiating elements is arranged at a position corresponding to a gap between any two adjacent first electrodes in the first direction.
6. The phased-array antenna according to claim 1 , wherein each of the radiating elements is a patch antenna or a slot antenna.
7. The phased-array antenna according to claim 6 , wherein the patch antenna is of a circular, elliptical or polygonal shape.
8. The phased-array antenna according to claim 1 , wherein each of the first bias electrodes and the second bias electrodes is a metal electrode.
9. The phased-array antenna according to claim 1 , wherein each of the first base substrate and the second base substrate is a glass substrate, a silicon substrate or a plastic substrate.
10. A multi-face array antenna device, comprising a platform and at least two phased-array antennae arranged on the platform, wherein at least one of the phased-array antennae is the phased-array antenna according to claim 1 .
11. The multi-face array antenna device according to claim 10 , wherein the platform is provided with at least two mounting surfaces, at least two of the mounting surfaces intersect each other, and at least one of the phased-array antennae is arranged at each of the mounting surfaces.
12. The multi-face array antenna device according to claim 11 , wherein the platform is of a prismatic or cylindrical shape.
13. The multi-face array antenna device according to claim 10 , wherein the platform is of a spherical or hemispherical shape.
14. The multi-face array antenna device according to claim 10 , further comprising a rotatable table, wherein the platform is fixed onto the rotatable table.
15. The multi-face array antenna device according to claim 14 , wherein the rotatable table comprises a seat and a driving mechanism, wherein the driving mechanism is configured to drive the seat to rotate, to enable the platform fixed onto the seat to rotate.
16. The multi-face array antenna device according to claim 10 , wherein
a first conductive layer is arranged on the first base substrate, and the plurality of first electrodes is arranged on the first conductive layer; and
a second conductive layer is arranged on the second base substrate, and the plurality of second electrodes is arranged on the second conductive layer.
17. The multi-face array antenna device according to claim 16 , wherein the first conductive layer is an indium tin oxide layer.
18. The multi-face array antenna device according to claim 16 , wherein the second conductive layer is an indium tin oxide layer or a metal layer.