This letter reports the first wideband method that: 1) detects both the power and frequency of an arbitrary interferer within a two-octave bandwidth and 2) subsequently deactivates the interferer through a frequency-tunable narrowband bandstop filter (BSF). The entire process can be completed within approximately $1~\mu \text {s}$ . The success of the proposed detection method relies on creating frequency- and power-dependent standing wave patterns of the incoming signal. It is worth emphasizing that all frequencies and power levels are simultaneously mapped to the system’s detection scheme without requiring time-consuming spectrum- and/or power-searching steps. After presenting the fundamental concept and the basic design steps, we demonstrate a proof-of-concept system that can detect interfering signals with unknown and arbitrary frequencies in the 2–8 GHz band and powers in the −5 to +15 dBm range. The proposed system is implemented with low-cost off-the-shelf components. The measured interferer deactivation response time is $1.1~\mu \text {s}$ for all signals within the system specifications.

中文翻译：

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具有 1.1 μs 响应的 2–8 GHz 干扰检测器

这封信报告了第一个宽带方法：1) 在两个倍频程带宽内检测任意干扰源的功率和频率，以及 2) 随后通过频率可调窄带带阻滤波器 (BSF) 停用干扰源。整个过程大约可以在 $1~\mu \text {s}$. 所提出的检测方法的成功依赖于创建输入信号的频率和功率相关的驻波模式。值得强调的是，所有频率和功率水平都同时映射到系统的检测方案，而不需要耗时的频谱和/或功率搜索步骤。在介绍了基本概念和基本设计步骤之后，我们演示了一个概念验证系统，该系统可以检测 2–8 GHz 频段内未知和任意频率以及 -5 到 +15 dBm 范围内的功率的干扰信号。所提出的系统是用低成本的现成组件实现的。测得的干扰去激活响应时间为 $1.1~\mu \text {s}$对于系统规格内的所有信号。