This article describes the design methodology to achieve reflective diode-based parametric frequency-selective limiters (pFSLs) with low-power thresholds ( P th) and sub-dB insertion-loss values (ILs.s) for driving power levels ( P in) lower than P th. In addition, we present the measured performance of a reflective pFSL designed through the discussed methodology and assembled on an FR-4 printed circuit board (PCB). Due to its optimally engineered dynamics, the built pFSL can operate around ~2.1 GHz while exhibiting record-low P th (-3.4 dBm) and ILs.s (0.94 dB) values. Furthermore, while the pFSL can selectively attenuate undesired signals with power ranging from -3.4 to 13 dBm, it provides a strong suppression level ( IS > 12.0 dB) even when driven by much higher P in values approaching 28 dBm. Such measured performance metrics demonstrate how the unique nonlinear dynamics of parametric-based FSLs can be leveraged through components and systems compatible with conventional chip-scale manufacturing processes in order to increase the resilience to electromagnetic interference (EMI) and even of wireless radios designed for low-power consumption and, consequently, characterized by a narrow dynamic range.

中文翻译：

---

具有亚 dB 损耗和渭瓦功率阈值的反射式参数频率选择限制器


本文介绍了实现基于反射二极管的参量频率选择限制器 (pFSL) 的设计方法，该限制器具有低功率阈值 (P th) 和用于驱动功率电平 (P in) 的亚 dB 插入损耗值 (ILs.s)低于 P th。此外，我们还展示了通过所讨论的方法设计并组装在 FR-4 印刷电路板 (PCB) 上的反射 pFSL 的测量性能。由于其优化设计的动态特性，内置 pFSL 可以在 ~2.1 GHz 左右运行，同时表现出创纪录的低 P th (-3.4 dBm) 和 ILs.s (0.94 dB) 值。此外，虽然 pFSL 可以选择性地衰减功率范围为 -3.4 至 13 dBm 的不需要的信号，但即使在由接近 28 dBm 的更高 P 值驱动时，它也能提供强大的抑制水平 (IS > 12.0 dB)。此类测量的性能指标展示了如何通过与传统芯片级制造工艺兼容的组件和系统来利用基于参数的 FSL 的独特非线性动态，以提高电磁干扰 (EMI) 甚至是专为低功耗设计的无线电设备的抗干扰能力。 -功耗，因此具有窄动态范围的特点。