Broadband Optimization of a High Power UHF Band Cylindrical Sleeve Dipole Antenna

The sleeve dipole radiator [1] has been used in various configurations to extend the impedance bandwidth of the classical dipole antenna by using a transmission radiation mode along with the fundamental dipole radiation mode. The dual mode resonances generate a two null return loss response. The cylindrical sleeve dipole and balun variation has over eight interactive design variables that are less intuitive compared with simpler dipole designs but provide extensive optimization opportunities. The design and bandwidth optimization of a new high power UHF sleeve dipole used in a new four element prime focus phased array feed is investigated