HF antennas on vehicles-a characteristic modal approach

Mobile antenna systems have always presented engineers with a challenge. This is particularly true at HF where the physical size and the orientation of the antenna are severely constrained by practical considerations, yet both are key factors in ensuring effective HF communications. The authors present an entirely new approach to the analysis and synthesis of HF antennas on vehicles with dimensions much less than a wavelength. Of particular importance is the relationship between the antenna and the propagation mode required for a given service