An antenna including a feed tube with radial fins and circular plates at
the ends of the tube and fins thereby forming a boundary for a plurality
of resonant cavities. Curved plates, connected to the tube by switches of
a switching system, partially encompass and subtend to the length of the
tube. Interior to the tube, a transmission line from an end plate terminus
conducts radio-frequency energy from the terminus to a hub and onto a
switch of the switching system in which the switch is mechanically
reactive to and actuated by a righting action of the curved plates when
the curved plates encounter a sea state. When actuated, energy from the
switch distributes to a proximate resonant cavity and curved plate to form
a radiation pattern based on the difference in phase of the resonant
cavity and curved plate.
