RF-Power-Activated and Signal-Tracking Tunable Bandstop Filters
RF-Power-Activated and Signal-Tracking Tunable Bandstop Filters
复制标题
射频功率激活和信号跟踪可调谐带阻滤波器
DOI：
10.1109/tmtt.2016.2645569
复制
发表时间：
2017
影响因子：
4.3
通讯作者：
Sanghoon Shin
中科院分区：
文献类型：
--
作者：
A. Guyette;E. Naglich;Sanghoon Shin
本文提出了两类新的依赖于射频功率的可调谐带阻滤波器，它们共享通用的滤波器拓扑。射频功率激活的可调谐带阻滤波器在存在高功率射频信号的情况下从谐振全通响应过渡到带阻响应，从而在用于解决接收器中的干扰问题时实现频谱的最佳使用。信号跟踪可调带阻滤波器可自动将其中心频率调整为高功率射频信号的中心频率，从而无需复杂的传感和控制系统。两者均介绍了理论和设计以及实验室原型。射频功率激活的可调谐带阻滤波器原型实现了 2.5 dB 的最小全通状态插入损耗和大于 50 dB 的带阻状态衰减。信号跟踪可调带阻滤波器原型可在 251–304 MHz 频率范围内将高功率信号衰减超过 33 dB。
Two new classes of RF-power-dependent tunable bandstop filters that share a common filter topology are presented in this paper. RF-power-activated tunable bandstop filters transition from a resonant-allpass response to a bandstop response in the presence of a high-power RF signal, allowing for optimum use of the spectrum when used to solve interference issues in a receiver. Signal-tracking tunable bandstop filters automatically tune their center frequencies to that of a high-power RF signal, eliminating the need for complex sensing and control systems. The theory and design as well as laboratory prototypes are presented for both. The RF-power-activated tunable bandstop filter prototype achieves a minimum allpass-state insertion loss of 2.5 dB and a bandstop-state attenuation of greater than 50 dB. The signal-tracking tunable bandstop filter prototype attenuates a high-power signal by greater than 33 dB over a frequency range of 251–304 MHz.