CPC H01P 1/181 (2013.01) [H01Q 3/38 (2013.01)] | 20 Claims |
1. A liquid crystal phase shifter, comprising:
a microwave transmission structure and a phase adjustment structure opposite to each other, and a liquid crystal layer between the microwave transmission structure and the phase adjustment structure; wherein
the phase adjustment structure comprises a plurality of phase adjustment units;
the plurality of phase adjustment units are configured to change a dielectric constant of the liquid crystal layer according to a voltage applied to the phase adjustment units and a voltage applied to the microwave transmission structure, so as to adjust a phase of a microwave signal; and
phase shift amounts adjusted by at least two of the plurality of phase adjustment units are different from each other, wherein
the microwave transmission structure comprises: a first substrate; a microstrip at a side of the first substrate proximal to the liquid crystal layer; and a ground electrode at a side of the first substrate distal to the liquid crystal layer;
the plurality of phase adjustment units are connected to each other in series; and
the microstrip has a straight-line shape that extends in a direction in which the plurality of phase adjustment units are connected to each other in series, and has a one-piece structure in the direction.
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