Patent ID: 11916297
Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A liquid crystal antenna, comprising:
a plurality of antenna units spliced together,
wherein:
each of the plurality of antenna units includes a first substrate and a second substrate opposite to the first substrate and a first liquid crystal layer disposed between the first substrate and the second substrate;
a first conductive layer is disposed on a side of the first substrate facing toward the second substrate, the first conductive layer including a plurality of driving electrodes;
a second conductive layer is disposed on a side of the second substrate facing toward the first substrate, the second conductive layer at least including a plurality of radiation electrodes, a power division network structure, and a plurality of microstrip lines, wherein:
the power division network structure is connected to a signal input terminal;
one end of a microstrip line of the plurality of microstrip lines is connected to the power division network structure;
another end of the microstrip line is respectively connected to the plurality of radiation electrodes; and
an orthographic projection of a driving electrode on the second substrate at least partially overlaps the microstrip line;

a first external metal layer is disposed on a side of the first substrate facing away from the first liquid crystal layer, the first external metal layer being connected to a fixed potential; and
all corresponding first external metal layers of the plurality of antenna units are electrically connected to form a whole surface structure.