BROADBAND MICROSTRIP ANTENNA WITH PRINTED DIPOLES AND GROUNDED PARASITIC PATCHES

摘要

The present invention relates to a microstrip printed dipole antenna, comprising a ground plate and at least one microstrip dipole unit connected with the ground plate; the dipole unit including a dielectric substrate, dipole arm and balanced-unbalanced transformer (balun); the dipole arm being located on one side surface of the dielectric substrate, the balun being located on the other side surface of the dielectric substrate, compound units disposed on both sides of the dipole arm, and further compound units disposed on both sides of the balun; the compound units on both sides of the balun being connected with the compound units on both sides of the dipole via a metalized hole. The half-power bandwidth of an antenna is controlled by adjusting the distance between the dipole arm and the compound units, and the height of the compound units. For an antenna array comprising microstrip antennas having the compound units, the cross coupling between the antenna units can be reduced.