Frequency-Selective Limiters Utilizing Contiguous-Channel Double Multiplexer Topology
Frequency-Selective Limiters Utilizing Contiguous-Channel Double Multiplexer Topology
复制标题
采用连续通道双复用器拓扑的频率选择性限制器
DOI：
10.1109/tmtt.2016.2590542
复制
发表时间：
2016
影响因子：
4.3
通讯作者：
A. Guyette
中科院分区：
文献类型：
--
作者：
E. Naglich;A. Guyette
本文提出了一种采用线性相位、连续通道双复用器拓扑结构和射频功率相关耦合结构的频率选择性限幅器。频率选择限制是在不使用磁性材料、非互易元件或参数电路的情况下实现的。制作了一个具有六个连续50 MHz带宽通道的L波段原型。在测量的低功率激励下，限幅器具有平坦的复合通带，带宽为300 MHz，插入损耗为1.6-1.9 dB。测量的群延迟在整个通带内为16 ± 0.7 ns，并且在通道交叉频率处没有峰值。11.4 dB到22 dB以上的限制独立地发生在经历高功率激励的任何信道中，而不干扰相邻信道频带。所测限幅阈值可在16 ~ 33 dBm范围内调谐，并可方便地设计成在其它功率范围内可调。
A frequency-selective limiter that uses a linear-phase, contiguous-channel double multiplexer topology and RF-power-dependent coupling structures is shown in this paper. Frequency-selective limiting is achieved without the use of magnetic materials, nonreciprocal components, or parametric circuits. An L-band prototype with six contiguous 50-MHz-bandwidth channels was fabricated. Under measured low-power excitation, the limiter has a flat, composite passband with a 300-MHz-bandwidth and 1.6-1.9 dB insertion loss. The measured group delay is 16 ± 0.7 ns across the passband and does not have peaks at channel crossover frequencies. Limiting by 11.4 dB to over 22 dB occurs independently in any channel that experiences high-power excitation without disturbing adjacent channel bands. The measured limiting threshold is tunable from 16 to 33 dBm and can be designed to be tunable over other power ranges easily.