Antenna, Detection Apparatus, and Terminal

1 . An antenna, wherein the antenna supports a first working mode and a second working mode, and wherein the antenna comprises:

a first antenna subarray group;

a second antenna subarray group, and

a third antenna subarray group; and

wherein the first antenna subarray group and the second antenna subarray group are used in the first working mode, and

wherein the second antenna subarray group and the third antenna subarray group are used in the second working mode.

2 . The antenna of claim 1 , further comprising a second antenna subarray between a first antenna subarray and a third antenna subarray in a first direction, wherein the first antenna subarray belongs to the first antenna subarray group or the third antenna subarray group, wherein the third antenna subarray belongs to the first antenna subarray group or the third antenna subarray group, and wherein the second antenna subarray belongs to the second antenna subarray group.

3 . The antenna of claim 2 , wherein in the first direction, a fourth antenna subarray in either of the first antenna subarray group or the third antenna subarray group is not positioned between the first antenna subarray and the third antenna subarray.

4 . The antenna of claim 1 , further comprising a second antenna subarray between a first antenna subarray and a third antenna subarray in a first direction, wherein the first antenna subarray belongs to the first antenna subarray group or the third antenna subarray group, wherein the third antenna subarray belongs to the first antenna subarray group or the third antenna subarray group, wherein the second antenna subarray belongs to the second antenna subarray group, wherein the first antenna subarray, the second antenna subarray, and the third antenna subarray are located in a first row in a second direction, and wherein the second direction is perpendicular to the first direction.

5 . The antenna of claim 4 , further comprising a fourth antenna subarray that belongs to the second antenna subarray group and that is located in a second row in the second direction, wherein the first row and the second row are different rows in the second direction.

6 . The antenna of claim 4 , wherein the third antenna subarray group is located in a third row in the second direction when the first antenna subarray and the third antenna subarray belong to the first antenna subarray group and wherein the first row and the third row are different rows in the second direction.

7 . The antenna of claim 2 , wherein a first distance between the first antenna subarray and the second antenna subarray is equal to a second distance between the second antenna subarray and the third antenna subarray.

8 . The antenna of claim 2 , further comprising a plurality of second antenna subarrays between the first antenna subarray and the third antenna subarray, wherein a first distance between the first antenna subarray and the second antenna subarray, a second distance between two adjacent second antenna subarrays, and a third distance between the second antenna subarray and the third antenna subarray are equal in the first direction.

9 . The antenna of claim 1 , wherein the first antenna subarray group comprises first antenna subarrays distributed at equal spacings in a first direction, wherein the second antenna subarray group comprises second antenna subarrays distributed at equal spacings in the first direction, and/or wherein the third antenna subarray group comprises third antenna subarrays distributed at equal spacings in the first direction.

10 . The antenna of claim 2 , further comprising:

a fourth antenna subarray that belongs to the first antenna subarray group or the third antenna subarray group; and

a fifth antenna subarray that is directly adjacent to the fourth antenna subarray and that belongs to the first antenna subarray group or the third antenna subarray group.

11 . The antenna of claim 1 , wherein a first radiation distance of the antenna in the first working mode is less than or equal to a second radiation distance of the antenna in the second working mode.

12 . The antenna of claim 1 , wherein a first antenna virtual aperture corresponding to the first working mode is less than or equal to a second antenna virtual aperture corresponding to the second working mode.

13 . The antenna of claim 2 , wherein the first antenna subarray and the second antenna subarray are configured to couple to a first channel through switching, and wherein the third antenna subarray is configured to couple to a second channel.

14 . The antenna of claim 4 , further comprising a sixth antenna subarray arranged in the first direction or the second direction.

15 . The antenna of claim 14 , wherein the second direction is perpendicular to the first direction when the sixth antenna subarray is arranged in the second direction.

16 . The antenna of claim 1 , wherein the first antenna subarray group, the second antenna subarray group, and the third antenna subarray group are configured to transmit a signal or receive the signal.

17 . A detection apparatus, wherein the detection apparatus comprises an antenna, wherein the antenna supports a first working mode and a second working mode, and wherein the antenna comprises:

a first antenna subarray group;

a second antenna subarray group; and

a third antenna subarray group,

wherein the first antenna subarray group and the second antenna subarray group are used in the first working mode, and

wherein the second antenna subarray group and the third antenna subarray group are used in the second working mode.

18 . A terminal, wherein the terminal comprises a detection apparatus, wherein the detection apparatus comprises an antenna, wherein the antenna supports a first working mode and a second working mode, and wherein the antenna comprises:

a first antenna subarray group;

a second antenna sub array group; and

a third antenna subarray group,

wherein the first antenna subarray group and the second antenna subarray group are used in the first working mode, and

wherein the second antenna subarray group and the third antenna subarray group are used in the second working mode.

19 . The terminal of claim 18 , wherein a first radiation distance of the antenna in the first working mode is less than or equal to a second radiation distance of the antenna in the second working mode.

20 . The apparatus of claim 17 , wherein the first antenna subarray group, the second antenna subarray group, and the third antenna subarray group are configured to transmit a signal or receive the signal.