关键词: 分形天线, 小型化, 低剖面, 垂直极化

Abstract:

A novel fractal iteration technique has been applied to a low-profile miniaturized monopole antenna. The resonant frequency of the antenna is 915MHz and the bandwidth is about 20MHz with vertical polarization. The fractal shape is applied to the open-circuited segment of the substrate to reduce the dimension of the substrate. At the same resonant frequency, the substrate dimension of the fractal antenna is 15％ smaller than that of the reference antenna. An antenna prototype is fabricated based on the simulation. The simulated and tested results prove that the design is feasible.

Key words: fractal antenna, miniaturized, low-profile, vertically polarized