2-11 GHz Dual Polarization Antenna for Terrestrial Radio Links

The paper presents the design criteria and the electrical characteristics of a terrestrial radio link antenna operating simultaneously, with dual linear polarization, at 2 and 11 GHz frequency bands. The antenna consists of a 4m parabolic reflector with a double grid shaped dichroic subreflector which is the most innovative component, theoretically designed and optimized by means of a reliable electromagnetic model. The performance are comparable with the typical values of radio link antennas operating at single band. Both electrical and cost requirements have been considered in the choice of the candidate configuration.