Liquid crystal phase shifter, liquid crystal antenna, and method for manufacturing liquid crystal antenna

The invention provides a liquid crystal phase shifter, a liquid crystal antenna, and a method for manufacturing the liquid crystal antenna. The liquid crystal phase shifter comprises a first substrate, a mixing layer, a second substrate, a liquid crystal layer, a first electrode and a second electrode, the first substrate and the second substrate are oppositely arranged; the first electrode is located on the side, close to the second substrate, of the first substrate. The second electrode is located on the side, close to the first substrate, of the second substrate. The mixing layer comprises mixed metal cushion balls and a supporting layer, the mixing layer is arranged between the first substrate and the second substrate, and the mixing layer supports the first substrate and the second substrate through the metal cushion balls mixed in the supporting layer; the liquid crystal layer is located between the first substrate and the second substrate. Wherein the mixing layer is mixed with metal cushion balls in t