Adjustable phase shifter and manufacturing method therefor, and electronic device

An electronic device, comprising:

• a tunable phase shifter, a radiating antenna, a power divider network, and a feeding network arranged in an array, wherein the tunable phase shifter comprises:
• a first substrate and a second substrate arranged opposite to each other;
• a variable dielectric layer between the first substrate and the second substrate;
• a first electrode on a side of the first substrate facing the variable dielectric layer;
• and
• a second electrode on a side of the second substrate facing the variable dielectric layer, wherein an overlapping area of the first electrode and the second electrode forms a variable capacitor;
• wherein, in a direction facing away from the first substrate, a sectional area of the first electrode along a plane parallel to a plane of the first substrate decreases;
• and
• in a direction facing away from the second substrate, a sectional area of the second electrode along a plane parallel to a plane of the second substrate decreases;
• wherein a side edge of a sectional shape of each of the first electrode and the second electrode along a corresponding thickness direction is arc-shaped and is concave toward a central position of the sectional shape.