SINGLE INPUT/OUTPUT MESH ANTENNA WITH LINEAR ARRAY OF CROSS POLARITY DIPOLE RADIATING ELEMENTS

摘要

Each of an array of radiating elements on a cross polarization dipole antenna receive signals having polarizations of +45 degrees and -45 degrees. The received signals from parallel dipoles are combined using hybrid combiner, or "rat race", incorporated into the ground plane. The hybrid combiner is a path or "run" connecting each dipole to a juncture where it can be summed with a complimentary signal from a coupled dipole. In the present invention, the path for each dipole is exactly measured to equal every other dipole's path, leading to the arrival of each signal at precisely the exact same moment. When the signals are combined, the constructive summation of the signals leads to a stronger signal than that achieved by any dipole independently, significantly improving the antenna's capacity to receive signals in the presence of multipath fade.