Liquid crystal phase shifter array and antenna

Abstract

The invention relates to the technical field of display, and discloses a liquid crystal phase shifter array and an antenna. The liquid crystal phase shifter array comprises a first substrate, a secondsubstrate and a liquid crystal layer, wherein the liquid crystal layer is arranged between the first substrate and the second substrate, a plurality of phase shifter units and a power division circuit are arranged at one side, facing the liquid crystal layer, of the first substrate, each phase shifter unit comprises a microstrip line, the microstrip line is electrically connected with the power division circuit, a grounding metal layer is arranged at one side, facing the liquid crystal layer, of the second substrate, in the liquid crystal layer, an initial matching direction of a liquid crystal corresponding to each phase shifter unit is parallel to the first substrate, and the initial matching direction of a liquid crystal corresponding to the power division circuit is perpendicular to the first substrate. In the liquid crystal phase shifter array, a liquid crystal region in the liquid crystal layer is matched, the direction of the liquid crystal below the power division circuit is perpendicular to the first substrate and is maintained to be perpendicular to the first substrate, the lowest loss of the integral device of the liquid crystal phase shifter array is maintained, the integral loss of the liquid crystal phase shifter array is favorably reduced, and moreover, the mode is simple and reliable.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal phase shifter array and an antenna. Background technique [0002] A phase shifter is a device that can adjust the phase of a wave. It is widely used in the fields of radar, missile attitude control, accelerator, communication, instrumentation and even music. When the microwave propagates in the medium, the change of the dielectric constant will make the phase of the microwave change. Materials whose dielectric constant changes with voltage, such as liquid crystal materials and ferroelectric materials, are filled between the microstrip line and the ground. When different voltages are applied between the microstrip line and the ground, different dielectric constants will be generated. Electric constant, so as to achieve the purpose of phase shifting. [0003] When used as an antenna array, etc., it is necessary to use a liquid crystal phase shifter array. Each l...

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Problems solved by technology

[0003] When used as an antenna array, etc., it is necessary to use a liquid crystal phase shifter array. Each liquid crystal phase shifter unit in the array needs to use a power divider circuit to feed in microwave signals. In the power divider part, the microwave signal is only transmitted without Phase modulation, but the introduction of the liquid crystal medium makes the loss of the power divider part larger, affecting the overall loss of the device

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