提出了一种工作于VHF/UHF频段的高增益圆极化十字交叉振子天线。为提高天线设计效率,建立了一种电磁仿真与电路仿真相结合的联合仿真方法对天线馈电网络进行设计。加工并测试了天线单元,理论值和实验值吻合较好,验证了设计的可行性。实测天线在6%的频带宽度内轴比小于3 dB,驻波比小于2,其最大辐射方向的主极化增益为7 dB。 A high gain circularly polarized cross dipole antenna operating in the VHF / UHF band is proposed. In order to improve the efficiency of antenna design, a joint simulation method combining electromagnetic simulation with circuit simulation is proposed to design the antenna feed network. Processing and testing of the antenna element, the theoretical value and experimental values ​​are in good agreement to verify the feasibility of the design. The measured antenna has an internal axis ratio of less than 3 dB at a 6% bandwidth and a VSWR of less than 2, with a primary polarization gain of 7 dB in the direction of maximum radiation.