Phase shifter, manufacturing method thereof and antenna

Abstract

The embodiment of the invention provides a phase shifter, a manufacturing method thereof and an antenna, relates to the technical field of electromagnetic waves, and aims to improve the accuracy of a radiation angle of a radiation signal. The phase shifter includes a first substrate, a second substrate, a directly facing cavity, liquid crystal and a supporting structure, wherein the first substrate is provided with a first electrode for receiving a grounding signal; the side, which faces the first substrate, of the second electrode is provided with a second electrode; directly facing cavity comprises a second electrode arrangement area, transition areas and a peripheral area, the orthographic projection of the second electrode arrangement area coincides with the orthographic projection of the second electrode in the direction perpendicular to the plane where the second substrate is located, each transition area surrounds at least one second electrode arrangement area, and the peripheral area is located on the side, which is away from the second electrode arrangement region, of the transition area; the liquid crystal is encapsulated between the first substrate and the second substrate; and the supporting structure is arranged between the first substrate and the second substrate and comprises first supporting columns located in the transition areas and second supporting columns located in the peripheral area, and the distribution density of the first supporting columns is greater than that of the second supporting columns.

Description

【Technical field】 [0001] The invention relates to the technical field of electromagnetic waves, in particular to a phase shifter, a manufacturing method thereof, and an antenna. 【Background technique】 [0002] With the gradual evolution of the communication system, the phase shifter has been more and more widely used. Taking the liquid crystal phase shifter as an example, the liquid crystal phase shifter changes the dielectric constant of the liquid crystal by controlling the rotation of the liquid crystal, so as to realize the The RF signal transmitted in the liquid crystal phase shifter is phase shifted. [0003] In the prior art, the liquid crystal phase shifter is provided with support columns for supporting the cell thickness. However, based on the current location of the support columns, the cell thickness uniformity of the liquid crystal phase shifter is not high, resulting in the filling of liquid crystals in different regions. The large difference in volume affects...

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Problems solved by technology

[0003] In the prior art, the liquid crystal phase shifter is provided with support columns for supporting the cell thickness. However, based on the current location of the support columns, the cell thickness uniformity of the liquid crystal phase shifter is not high, resulting in the filling of liquid crystals in different regions. The volume difference is large, which affects the radiation angle of the RF signal radiated by the liquid crystal phase shifter, thereby affecting the antenna gain

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