传输线脉冲变压器次级线电感的优化设计
Optimization of secondary line inductance of transmission line transformer
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摘要: 建立并分析了传输线脉冲变压器的基本电路模型，采用优化次级线电感参数的方法，有效地提高了次级线的阻抗，达到了抑制次级线对输出结果影响的目的。在此基础上，分析并讨论了2种典型的传输线脉冲变压器拓扑结构，在一般情况下，推导了二者输出脉冲电压幅值的计算公式，优化了各次级线电感大小的设计。结果表明，级间无耦合结构从第二级开始电感逐级增加，第n级次级线上电感的最优大小为第二级的(n-1)倍；级间有耦合结构中同一磁芯引起的各次级线电感大小应相同。最后，比较了各类结构的输出，指出级间有耦合结构所需磁芯量最少。Abstract: Circuit models of transmission line transformers are analyzed. A method to restrain the impact of the secondary line is adopted, which is enhancing the impedance of the secondary line. Two typical topologies of transmission line transformers are analyzed and discussed, and the expressions of output waveforms are derived. Optimization of each secondary line inductance is given. The optimal value of the n-stage inductance is n-1 times the magnitude of that of the second stage for the structure without coupling between stages, and the inductance of each induced by the same magnetic core is equal for the structure with coupling between stages. At last, comparing the outputs of several structures, the results indicate the topology of the structure with mutually coupling between stages needs the
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Key words:
- transmission line transformer /
- secondary line /
- inductance /
- optimization /
- interstage coupling
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