ABSTRACT In this paper, a novel frequency reconfigurable filtering antenna is proposed for modern wireless communication systems. The feed network is composed of a stepped impedance resonator filter and a 50-Ω microstrip line. PIN diodes are used to switch the antenna to operate at either an ultra-wideband state or a dual-band state. For the dual-band state, the antenna operates at both 3.35 and 5.2 GHz. The measured results on tuning range, radiation patterns, and realized gains are provided, which show a good agreement with the numerical simulations.

中文翻译：

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一种基于阶跃阻抗谐振器的频率可重构滤波天线

摘要 在本文中，提出了一种用于现代无线通信系统的新型频率可重构滤波天线。馈电网络由阶梯阻抗谐振器滤波器和 50Ω 微带线组成。PIN 二极管用于切换天线，使其工作在超宽带状态或双频带状态。对于双频状态，天线工作在 3.35 和 5.2 GHz。提供了调谐范围、辐射方向图和实现增益的测量结果，与数值模拟吻合良好。