This paper explores a new concept for the design of high scanning-range phased array antennas: the Interleaved Parasitic Arrays Antenna or IPAA. In this concept, we use periodic parasitic elements and the generator impedance to control the Active Voltage Standing Wave Ratio (AVSWR) over a wide scanning range. This new array architecture comes with a design methodology enabling a smooth step-by-step design process aiming at reducing the need for full-wave calculations. First, a numerical dual-polarization design is presented in detail to illustrate the methodology and to give the design keys to the reader. Then, a prototype working in the 5G C-band between 3.4 and 3.8 GHz (11% bandwidth) was designed using this methodology and measured for a 36-element array. It is meant to demonstrate and validate the mutual coupling management done by the interleaved parasitic arrays and the design process accuracy. Good correspondence between measurements and simulation was found and the proposed unit cell with its corresponding tile can be integrated in a larger phased array with active modules to perform beam steering over an important scanning range without deteriorating the AVSWR. The proposed unit cell is designed for a high-scanning range going from θ=0∘\theta =0^{\circ } to θ=70∘\theta = 70^{\circ } for every φ\varphi -directions and shows an active reflection coefficient for an infinite array below −13.6dB.

中文翻译：

---

使用 WiFi RSSI 测量对室内环境进行成像的增强方法


本文探讨了高扫描范围相控阵天线设计的新概念：交错寄生阵列天线（IPAA）。在这个概念中，我们使用周期性寄生元件和发生器阻抗来控制宽扫描范围内的有源电压驻波比（AVSWR）。这种新的阵列架构配备了一种设计方法，可实现平稳的逐步设计过程，旨在减少全波计算的需求。首先，详细介绍了数值双偏振设计，以说明该方法并向读者提供设计要点。然后，使用这种方法设计了一个在 3.4 至 3.8 GHz 之间的 5G C 频段（11% 带宽）工作的原型，并针对 36 元件阵列进行了测量。它旨在演示和验证交错寄生阵列完成的相互耦合管理以及设计过程的准确性。测量和仿真之间存在良好的对应关系，并且所提出的单元及其相应的瓦片可以集成到具有有源模块的更大的相控阵中，以在重要的扫描范围内执行波束控制，而不会降低 AVSWR。所提出的单位单元设计用于每个 φ\varphi 方向的从 θ=0∘\theta =0^{\circ } 到 θ=70∘\theta = 70^{\circ } 的高扫描范围，并显示无限阵列的有源反射系数低于-13.6dB。