Phase shifter and electronic device

A phase shifter, comprising:

• a first dielectric substrate;
• and
• a first feed structure, a second feed structure and a phase shifting structure, which are all arranged on the first dielectric substrate;
• wherein
• the phase shifting structure comprises:
• a first signal electrode and at least one first reference electrode on at least one side of an extending direction of the first signal electrode;
• a first insulating layer on a side of a layer, where the first signal electrode and the at least one first reference electrode are located, away from the first dielectric substrate;
• wherein the first insulating layer covers the at least one first reference electrode and the first signal electrode;
• and
• at least one phase control unit on a side of the first insulating layer away from the first dielectric substrate;
• wherein each phase control unit comprises at least one film bridge;
• there is a gap between a bridge deck of each film bridge and the first insulating layer;
• and an orthographic projection of a bridge deck of each film bridge on the first dielectric substrate overlaps with orthographic projections of the first signal electrode and the at least one first reference electrode on the first dielectric substrate;
• the first feed structure comprises a second signal electrode;
• the second feed structure comprises a third signal electrode;
• and the second signal electrode and the third signal electrode are connected to a first end and a second end of the first signal electrode, respectively;
• and
• the phase shifter further comprises at least one first bias signal line connected to the second signal electrode or the third signal electrode.