Design of a Single-Element Dynamic Antenna for Secure Wireless Applications
Design of a Single-Element Dynamic Antenna for Secure Wireless Applications
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DOI：
10.1109/tap.2023.3288013
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发表时间：
2022-12
影响因子：
5.7
通讯作者：
Amer Abu Arisheh;Jason M. Merlo;J. Nanzer
中科院分区：
文献类型：
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作者：
Amer Abu Arisheh;Jason M. Merlo;J. Nanzer
我们介绍了一种新的技术，安全的无线应用程序使用一个单一的动态天线。动态天线支持恒定且快速变化的电流分布，其产生在期望方向上是静态的而在其他地方是动态的辐射图案。这在信号上施加附加调制，并且使在信息束之外发送或接收的信息模糊，从而实现定向调制。动态电流由在单个天线上的单独端口之间切换的单个馈电支持，从而在不改变天线的物理形状的情况下产生两种不同的辐射模式。我们介绍的理论概念，通过探索一个理想的复杂的动态辐射模式，保持静态在一个狭窄的所需的方向，是动态的其他地方。对信息传输的影响进行了分析，示出的信息束变窄的调制阶数的增加，和设计约束的信息束的空间宽度作为调制格式的函数被确定。我们设计和分析了一个2.3 GHz的双态动态偶极子天线和实验证明安全的无线传输。我们证明了改变信息束宽和引导信息束实验在真实的时间，并保持高吞吐量的信息束，同时掩盖其他地方的信息的能力。与多端口或基于阵列的天线相比，我们的方法引入了一种新颖的快速切换的单元件技术，用于安全的无线应用，该技术可以独立于无线系统的其余部分使用，基本上作为一个“黑匣子”来操作，以获得额外的安全层。
We introduce a new technique for secure wireless applications using a single dynamic antenna. The dynamic antenna supports a constantly and rapidly changing current distribution that generates a radiation pattern that is static in a desired direction and dynamic elsewhere. This imparts additional modulation on the signal and obscures information transmitted or received outside of the information beam, thus achieving directional modulation. Dynamic currents are supported by a single feed that is switched between separate ports on a single antenna, generating two different radiation patterns without changing the physical shape of the antenna. We introduce the theoretical concept by exploring an ideal complex dynamic radiation pattern that remains static in a narrow desired direction and is dynamic elsewhere. The impact on the transmission of information is analyzed, showing that the information beam narrows as the modulation order increases, and design constraints on the spatial width of the information beam as a function of modulation format are determined. We design and analyze a 2.3-GHz two-state dynamic dipole antenna and experimentally demonstrate secure wireless transmission. We demonstrate the ability to change the information beamwidth and steer the information beam experimentally in real time, and to maintain high throughput in the information beam while obscuring the information elsewhere. In contrast to multiport or array-based antennas, our approach introduces a novel rapidly switched single-element technique for secure wireless applications that can be used independently of the rest of the wireless system, essentially operating as a “black box” for an additional layer of security.