Reflector-provided dipole antenna

摘要

The reflector-provided dipole-antenna shows outstanding performance in a wide frequency range and allows simultaneous transmission and reception at different frequencies. A dipole antenna element is provided at the back of a dielectric substrate set to the reflector surface. A parasitic element is provided on the front of the dielectric substrate, which is constituted by forming and protruding the central portion of a linear conductor forward in an almost trapezoidal shape, for example. The protruded portion is set to a position corresponding to the front of the feed point of the dipole antenna element and the portions of the said parasitic element towards the ends are set to positions corresponding to the rear of the dipole antenna element. A feed circuit provided on the face side of dielectric substrate is connected to a coaxial connector provided at the back of the reflector.