关键词: 圆筒形双频天线, 电磁仿真, 回波损耗, 远场增益

Abstract:

Three electromagnetic simulators：high frequency structure simulator (HFSS), FEKO and computer simulation technology microwave studio(CST MS) are applied in dualband cylindershape antenna analysis. Simulations show that HFSS provides good agreement with the measured return loss, while FEKO presents good agreement with the measured far field gain. The simulated results by using CST MS agree well with the measured results for both return loss and farfield gain. The measured results show that it has 150MHz (820～970MHz) bandwidth at the lower band and 600MHz (17～23GHz) at the upper band under the condition of voltage standing wave ratio less than 15, and far field gain is 18dBi at 900MHz and 49dBi at 2GHz.

Key words: dualband cylindershape antenna, electromagnetic simulation, return loss, far field gain