Abstract: The concealment and anti-jamming characteristics of precision guided missile put forward higher requirements for the bandwidth of missile borne antenna. Moreover, in missile borne applications with limited installation space, the missile borne antenna must have a lower profile height to ensure the aerodynamic shape and flight performance of the missile. Therefore, ultra wideband antennas and conformal antennas with superior performance become important research directions. In this paper, the log periodic antenna and the miniaturized improved log periodic antenna are designed, which are conformal to the surface of the metal body and can form a six element antenna array. The simulation and experimental results show that the design is reasonable.