Phase shifter, antenna circuit and antenna device

An antenna circuit, comprising:

• an antenna electrode;
• a first substrate;
• a second substrate, disposed opposite to the first substrate;
• a liquid crystal layer, disposed between the first substrate and the second substrate;
• and
• a phase shifter, configured to feed a radio frequency signal into the antenna electrode, and comprising:
• a plurality of first ring-shaped electrodes, disposed sequentially and in interval on a side of the first substrate which is adjacent to the liquid crystal layer;
• and
• a plurality of second ring-shaped electrodes, disposed sequentially and in interval on a side of the second substrate which is adjacent to the liquid crystal layer, wherein a plurality of vertical projections projected by the plurality of first ring-shaped electrodes on the second substrate are at least partially overlapped with the plurality of second ring-shaped electrodes respectively.

An antenna device, comprising:

• a first substrate;
• a second substrate, disposed opposite to the first substrate;
• a liquid crystal layer, disposed between the first substrate and the second substrate;
• and
• a plurality of antenna circuits, arranged in an antenna matrix having a plurality of rows and a plurality of columns, wherein each of the antenna circuit comprises:
• an antenna electrode;
• and
• a phase shifter, configured to feed a radio frequency signal into the antenna electrode, and comprising:
• a plurality of first ring-shaped electrodes, disposed sequentially and in interval on a side of the first substrate which is adjacent to the liquid crystal layer;
• and
• a plurality of second ring-shaped electrodes, disposed sequentially and in interval on a side of the second substrate which is adjacent to the liquid crystal layer, wherein a plurality of vertical projections projected by the plurality of first ring-shaped electrodes on the second substrate are at least partially overlapped with the plurality of second ring-shaped electrodes respectively.