Theory of Switched RF Resonators
Theory of Switched RF Resonators
复制标题
DOI：
10.1109/tcsi.2006.885987
复制
发表时间：
2006-12
期刊：
影响因子：
--
通讯作者：
Shinho Kim;Y. Wang
中科院分区：
文献类型：
--
作者：
Shinho Kim;Y. Wang
研究了开关谐振器的瞬态特性。谐振器在交替充放电过程中表现出可控的阻抗和能量存储行为。据发现，开关谐振器的这些独特的特性可以导致新的RF包络信号处理功能。本文讨论了开关谐振器的基本理论及其在射频信号处理中的应用。两个应用程序作为例子。第一个例子是可变的反射衰减器，其使用开关谐振器的可控阻抗来实现不同的衰减/反射水平。在第二个例子中，介绍了一种简单，紧凑和有效的RF脉冲压缩技术的基础上的开关谐振器的概念。它通过改变谐振器的Q因子来利用电路谐振器的充电/放电特性。该方法在不改变RF载波相位特性的情况下压缩调制脉冲的持续时间。如通过实验所证明的，脉冲压缩技术也可以用包括分布式谐振器的其他类型的谐振器来实现
Transient characteristics of switched resonators have been studied. The resonators exhibit controllable impedance and energy storage behaviors during an alternating charging and discharging process. It is discovered that these unique characteristics of switched resonators can lead to novel RF envelope signal processing functions. The paper discusses the basic theory of switched resonators and the designing methodology of relevant RF signal processing applications. Two applications are presented as examples. The first example is a variable, reflective attenuator which uses the controllable impedance of the switched resonators to achieve different attenuation/reflection levels. In the second example, a simple, compact and efficient RF pulse compression technique based on the switched resonator concept is introduced. It utilizes the charging/discharging characteristics of the circuit resonator by varying the resonator's Q-factor. The approach compresses the duration of the modulated pulse without changing the phase characteristics of the RF carrier. The pulse compression technique can also be implemented with other type of resonators including distributed resonators, as demonstrated through the experiments