Broadband VHF antenna

Investigations are reported of an electrically short, asymmetrically fed broadband antenna employing a base isolation choke, The base isolation choke minimizes excitation of the mounting platform and improves radiation patterns. The asymmetrical feed optimizes the antenna current distribution over the 30 to 90 MHz frequency range resulting in improved field strength on the horizon and extended impedance bandwidth. The antenna characteristics have been determined by numerical methods and confirmed experimentally.