TV White space has the potential to extend internet connection to remote areas worldwide. In this paper, a dual-band frequency reconfigurable microstrip patch antenna has been designed for TV white space applications. Switching between the frequencies (reconfiguration) has been achieved by introducing a switch between two radiating strips on the top surface of the substrate. The prototype has been designed and fabricated on a cost-effective FR-4 substrate (εr = 4.4, tanδ = 0.02) with an overall dimension of 30 × 261 × 0.8 mm3. ON and OFF condition of the switch provides two operating frequency bands namely 626.7–778.11 MHz and 461.5–549.7 MHz The proposed monopole TV white space antenna operates with a peak gain of 2 dB with an efficiency greater than 85% in both the bands. The simulated and measured parameters are well-matched in both the operating bands along with desired radiation patterns suitable for TV white space applications.

中文翻译：

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用于电视空白空间应用的独特频率可重构单极天线

TV White space 具有将互联网连接扩展到全球偏远地区的潜力。在本文中，设计了一种用于电视空白空间应用的双频段频率可重构微带贴片天线。频率之间的切换（重新配置）是通过在基板顶部表面上的两个辐射条之间引入一个开关来实现的。该原型是在具有成本效益的 FR-4 基板上设计和制造的（εr= 4.4，棕褐色δ= 0.02)，整体尺寸为 30 × 261 × 0.8 mm3. 开关的 ON 和 OFF 条件提供了两个工作频段，即 626.7–778.11 MHz 和 461.5–549.7 MHz 所提出的单极电视空白空间天线以 2 dB 的峰值增益工作，在两个频段的效率都大于 85%。模拟和测量参数在两个工作频段以及适用于电视空白空间应用的所需辐射方向图都非常匹配。