Abstract: A design of ultrawideband and low-profile antenna is introduced in this paper. The proposed antenna is consists of a bending dipole, two parasitic shorted walls, a shorted metal cylinder, a coaxial cable, and a metal ground. This paper gives the design process of the proposed antenna, which illustrates the effect of each structure on the antenna performances. By using the parasitic shorted walls, the current distribution on the arms of the dipole is reduced which reduces the influence of metal ground on the performance of the proposed antenna, and then the low-profile performance is realized. In addition, the radiation patterns of higher band are improved by bending the middle of the dipole. Consequently, the proposed antenna has an overall size of 750 mm×450 mm×295 mm. The profile of the proposed antenna is only 0. 09λ,where λ is the free-space wavelength at the lowest frequency. To illustrate the validity of antenna design, the antenna model is fabricated. This paper gives the measured and simulated results of antenna VSWR and gain. Good agreement between the measured and simulated results is observed. The impedance bandwidth for VSWR<2. 2 can cover the band of 96 MHz-500 MHz(135. 57??). In addition, in the working band, the radiation patterns of the proposed antenna are unidirectional, and the measured results are in good agreement with the simulated ones.