A broadband HF triangle dipole wire-antenna with tailed wings and lumped loading resistors is designed and analyzed by using method of moments(MoM).Its voltage standing wave ratio(VSWR) and gain are optimized.An experimental antenna is made.Both numerical results and measured data show that the VSWR is less than 2.2 and the average gain for the average ground is larger than 4dBi in 3~30 MHz frequency range.