Abstract: An antenna with wide bandwidth high low-elevation gain for satellite navigation terminal is studied. The antenna consists of two pairs of crossed dipole antenna arms, a feed network and Fence-shaped reflection cavity; two pairs of crossed dipole arms are located on the horizontal plane and the vertical plane respectively, forming an effective contribution to the gain in the elevation directions of the upper half space. The phase difference of 90°is realized by using the feed network to satisfy the circular polarization condition of antenna. Fence-shaped reflecting cavity is used to realize the directional radiation and improve the antenna bandwidth and low elevation gain. The influence of typical parameter variations on antenna performance is analyzed. The test results show that the impedance bandwidth of antenna |S11 |≤ -10 dB is 1.330-1.810 GHz, the axial ratio bandwidth of less than 3 dB is 1.54-1.66 GHz and the maximum gain of 10° low elevation at frequency of 1.561, 1.575 and 1.602 GHz is 0.35 dBi, 0.21 dBi and 0.1 dBi, respectively. The antenna has high low-elevation gain, relativelysmall size and wide bandwidth.