Phase shifter for a wireless communication device comprising a substrate having a transmission line and a two wire bias line, where one wire has greater sheet resistance than the other wire

A wireless communication device, comprising a phase shifter, wherein

• the phase shifter comprises:
• a first substrate, a radio frequency transmission line, and a bias line;
• and
• the radio frequency transmission line is arranged on a side of the first substrate;
• the bias line is connected to the radio frequency transmission line;
• the bias line comprises a first wire and a second wire;
• a sheet resistance of the second wire is configured to be greater than a sheet resistance of the radio frequency transmission line;
• the first wire and the radio frequency transmission line are connected to each other and form an integrated structure, and a line width of the first wire is configured to be less than a line width of the radio frequency transmission line;
• the second wire and the first wire are configured to form a lapping region along an extension direction of the first wire;
• in the lapping region, the second wire is arranged on a side of the first wire away from the first substrate;
• and in a direction perpendicular to a plane where the first substrate is located, the second wire is configured to cover the first wire.