The development of plasma column is described in this paper. The feasibility of replacing metal by plasma column in making the fundamental antenna vibrator is analyzed. According to approach to radiation pattern of metal, the radiation patterns of traveling wave in a plasma antenna and standing wave transmitting in a plasma dipole antenna in simple condition are calculated. Based on the radiation patterns, the variation law of radiation patterns for plasma parameters being changed is analyzed, the controllability of plasma column antenna's radiation patterns is confirmed, and the result shows that utilizing plasma column antenna for transmitting signals is of certain value in application.