Ridge gap waveguides have been considered promising guiding structures in high-frequency applications. One of the major problems that face this guiding structure is the limited abilSatellite communication is considered recently among the rapidly growing applications. Giant corporations are promoting this technology as the future internet service provider due to its impressive coverage compared with traditional cellular systems. Satellite systems are relatively classical technology; however, they are revisited nowadays to be reshaped according to satellite internet requirements. we have devoted significant effort to enabling this technology through presenting various feed designs with the ultrawideband operation. One of the major feed structures is the ortho-modal transducers, where we have presented various wideband and high-power designs for linearly polarized Ortho-modal Transducers (OMT), compact OMT, and Circularly polarized septum polarizers. In addition, we have proposed OMT designs based on modern guiding structures such as ridge gap waveguides. The satellite internet requires high gain low profile antennas with dual polarization. Accordingly, we have developed multiple antennas featured with wideband and low profiles tailored for the satellite frequency bands paving the road for the anticipated growth in these applications. We have provided novel methodologies to obtain exceptional gain based on printed horn structures and we have invented new methodologies for antenna design based on machine learning techniques. The outcomes of this project are published in various journals and conference articles.
