Abstract: The paper proposes to get height compressed cone antenna and lumped-load matching network together to form a low-profile,high power and broadband UHF antenna. The antenna has the characteristics of a low-profile,small size,broadband,high power capacity and compact structure, which can well meet the application requirements of vehicle jammer.The experiment shows that the antenna in 800 ~1500 MHz frequency range with S11 is basically below -13 dB, directivity is about 6.23 dBi and half-power beamwidth is 74.32°,respectively. The paper has a certain reference value to develop the low-profile,high power and broadband UHF antenna.