Seven-notch microstrip antenna with mutually nested open-loop grooves and similar U-shaped grooves

The utility model discloses a seven-notch microstrip antenna with mutually nested open-loop grooves and similar U-shaped grooves, a first arc-shaped open-loop resonator and a second arc-shaped open-loop resonator are different in shape, and the second arc-shaped open-loop resonator and a third arc-shaped open-loop resonator are different in shape. The distance between the first type U-shaped parasitic band and the second type U-shaped parasitic band is 0.9 mm; the distance between the third type U-shaped parasitic band and the fourth type U-shaped parasitic band is 1mm; the distances between the U-like parasitic bands on the two sides of the microstrip feeder line and the microstrip feeder line are different; the length of the first type U-shaped parasitic band connecting arm is 6.1 mm; the length of a second type U-shaped parasitic band connecting arm is 6.6 mm; the length of a third type U-shaped parasitic band connecting arm is 6.5 mm; and the length of the fourth type U-shaped parasitic band connecting ar