Triple-resonant null frequency scanning antenna

A triple-resonant null frequency scanning antenna, wherein the triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole (2) arranged on a medium substrate (1), and rectangular notches (4) are symmetrically arranged on a sector patch of the circular sector magnetic dipole (2);

• the circular sector magnetic dipole (2) is fixed on the medium substrate (1) by a second shorting pin (6) and third shorting pins (7), an flared angle of the circular sector magnetic dipole (2) is a first central angle (11), and two third shorting pins (7) are present and are symmetrically arranged on two sides of the angular bisector of the first central angle (11);
• three resonance points are formed through the cooperation between the circular sector magnetic dipole, the shorting pins and the notches;
• and the circular sector magnetic dipole (2) is connected to a parasitic sector magnetic dipole (3) by a vertical shorting wall (9), and the parasitic sector magnetic dipole (3) is fixed on the medium substrate (1) by a first shorting pin (5).