Phase shifter using dielectric and electronic device including the same

An electronic device, comprising:

• a power source;
• at least one processor;
• at least one filter;
• an antenna printed circuit board (PCB);
• and
• an array antenna comprising a plurality of sub-arrays,
• wherein, for each sub-array, the antenna PCB comprises:
• a plate,
• a dielectric coupled to the plate, and
• a PCB comprising a metal pattern,
• wherein the metal pattern comprises a power divider having a first transmission branch extending from a branch point of the power divider and a second transmission branch extending from the branch point of the power divider,
• wherein the first transmission branch comprises a first structure formed between the branch point of the power divider and an output terminal of the first transmission branch,
• wherein the second transmission branch comprises a second structure formed between the branch point of the power divider and an output terminal of the second transmission branch,
• wherein the output terminal of the first transmission branch is electrically connected to first antenna elements of a sub-array of the array antenna,
• wherein the output terminal of the second transmission branch is electrically connected to second antenna elements of the sub-array, different from the first antenna elements of the sub-array,
• wherein the dielectric is disposed to overlap at least one of at least a portion of the first structure or at least a portion of the second structure,
• wherein, in case that a first region where the dielectric overlaps the first structure expands according to movement of the plate, a second region where the dielectric overlaps the second structure shrinks, and
• wherein, in case that the first region shrinks according to the movement of the plate, the second region expands.