Digital phase shifter

A digital phase shifter comprising:

• a plurality of digital phase shift circuit groups in which a plurality of digital phase shift circuits are connected in cascade;
• and
• one or more bend-type connection units connected between two digital phase shift circuit groups,
• wherein each of the digital phase shift circuits includes at least a signal line, a pair of inner lines provided at both sides of the signal line, a pair of outer lines provided outside of the inner lines, a first ground conductor connected to one end of each of the inner lines and the outer lines, a second ground conductor connected to the other end of each of the outer lines, a pair of electronic switches provided between the other ends of the inner line and the second ground conductor, and a capacitor electrically connected between the signal line and at least one of the first ground conductor and the second ground conductor,
• wherein each of the digital phase shift circuits is a circuit set in a low-delay mode in which a return current flows through the inner line or a high-delay mode in which a return current flows through the outer line, and
• wherein at least one of the digital phase shift circuits constituting at least one digital phase shift circuit group is a mitigation circuit configured to mitigate a distribution of phase shift amounts.