Metasurface unit and antenna
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorsLiangang Chi, Dong Chen
Life of this patent
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Abstract
A metasurface unit includes a metal radiation patch with a gap, an upper-layer dielectric plate, a metal ground layer, a lower-layer dielectric plate, and a feed structure arranged in sequence from top to bottom. One end of the feed structure is connected to the metal radiation patch, and another end of the feed structure is arranged on a bottom layer of the lower-layer dielectric plate through a feed through hole. The feed through hole passes through the upper-layer dielectric plate, the metal ground layer and the lower-layer dielectric plate in turn. The metal radiation patch is rotatable around a central axis. Different included angles between the gap and a positive direction of an X-axis correspond to different polarization states.
Claims18
A metasurface unit, comprising:
- a metal radiation patch with a gap, an upper-layer dielectric plate, a metal ground layer, a lower-layer dielectric plate, and a feed structure arranged in sequence from top to bottom;
- wherein one end of the feed structure is connected to the metal radiation patch, and another end of the feed structure is arranged on a bottom layer of the lower-layer dielectric plate through a feed through hole;
- the feed through hole passes through the upper-layer dielectric plate, the metal ground layer and the lower-layer dielectric plate in turn;
- the metal radiation patch is rotatable around a central axis, and different included angles between the gap and a positive direction of an X-axis correspond to different polarization states;
- wherein a central axis of the feed through hole is consistent with a central axis of the metal radiation patch.
An antenna, comprising:
- a metasurface, wherein at least one subarray is arranged on the metasurface, and each subarray corresponds to a respective antenna channel;
- each subarray includes a plurality of metasurface units, and polarization states of the metasurface units are the same or different;
- wherein each metasurface unit comprises:
- a metal radiation patch with a gap, an upper-layer dielectric plate, a metal ground layer, a lower-layer dielectric plate, and a feed structure arranged in sequence from top to bottom;
- wherein one end of the feed structure is connected to the metal radiation patch, and another end of the feed structure is arranged on a bottom layer of the lower-layer dielectric plate through a feed through hole;
- the feed through hole passes through the upper-layer dielectric plate, the metal ground layer and the lower-layer dielectric plate in turn;
- the metal radiation patch is rotatable around a central axis, and different included angles between the gap and a positive direction of an X-axis correspond to different polarization states;
- wherein a central axis of the feed through hole is consistent with a central axis of the metal radiation patch.
Dependencies are inferred from the claim text.