倍频程带线环行器最佳设计理论  

The Optimum Design Theory for the Octave-Band Stripline Circulators

作　　者：潘永吉 

机构地区：[1]北京无线电测量研究所

出　　处：《系统工程与电子技术》1991年第12期1-11,共11页Systems Engineering and Electronics

摘　　要：本文分析了倍频程带线环行器设计理论,给出了用双Y结加一级λ_g/4阻抗变换器构成的倍频程带线环行器最佳设计程序,全部计算比Y.S.Wu等给出的设计简单。设计出2-4GHz Y结环行器的典型参数为:插损α_+≤0.4dB,隔离α_- ≥20dB,VSWR:S≤1.25。一个倍频程低损耗和高隔离性能证明了不需要重复设计周期。文中还描述了倍频程带线环行器的有载Q_L在0.5≤κ/μ≤1范围工作时<O.77,不受工作在主模式n=±1常规环行器要Q_L≥0.77的限制。This paper deals with design theory for the octave-band stripline circulators. Theoptimum design programming given herein is obtained by double-Y junction with a section of λg/4impedance transformer. The calculation is simpler than that given by Y.S.Wu et al[1]. The typical performance of the designed 2-4GHz Y-junction circulator is as follows: insertion loss α+≤0.4dB, isolation α-≥20dB, VSWR-S≤1.25.The obtained octave low-loss and high isolation performance eliminates the need of repeating the design cycles.The paper also describes the loaded QL-factor of the octave-band stripline circulator for operation in a region of 0.5<k/μ< 1, QL<0.77. It will not be confined within the limits of QL≥0.77, as the circulator in n = 1 dominant mode.

关 键 词：带状线环行器 设计 理论 

分 类 号：TN621.02[电子电信—电路与系统]