This paper presents the fork‐shaped antenna that can reconfigure frequency and pattern. The size of the proposed antenna is 29 × 23 mm². Four PIN diodes are used to reconfigure frequency and pattern of the proposed antenna. The proposed antenna operates at various frequencies, that is, 3, 3.1, 3.2, 3.72, 4.9, 5, 5.2 and 5.5 GHz, and has a pattern tilt from −170° to +170° in yz plane in various switching modes of PIN diodes. The proposed antenna is simulated in high‐frequency structure simulator (HFSS). In HFSS, lumped RLC elements are used to reconfigure pattern and frequency. PIN diodes are incorporated in fabricated prototype for switching to validate the simulated results. The proposed antenna shows a good matching in simulated and measured results.

中文翻译：

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叉形频率和方向图可重构天线

本文介绍了可以重新配置频率和方向图的叉形天线。建议的天线尺寸为29×23 mm ²。四个PIN二极管用于重新配置建议天线的频率和方向图。拟议中的天线在3、3.1、3.2、3.72、4.9、5、5.2和5.5 GHz的各种频率下工作，并且在PIN的各种切换模式下在yz平面中的方向图倾斜度从-170°到+ 170°二极管。拟议的天线在高频结构仿真器（HFSS）中进行了仿真。在HFSS中，集总的RLC元素用于重新配置模式和频率。PIN二极管集成在制造的原型中，用于开关以验证仿真结果。所提出的天线在仿真和测量结果中显示出良好的匹配性。