CAJ | 학술논문

针对现有高功率微波武器辐射天线的不足,提出了将磁化等离子体通道用作电磁脉冲辐射天线的思想-磁化等离子体通道天线(MPCA),分析了MPCA周围为有耗气体媒质时MPCA所传播的一般模式.简单阐述了MPCA的具体实现方法,根据MPCA的工作原理,建立了MPCA的几何模型,利用边界条件导出了MPCA最严格的色散方程.重点讨论了传播常数随等离子体参数、周围介质参数和外加磁场的变化.结果表明,有限磁场中的MPCA与无穷大磁场时具有一些不同的传播特性,这些结果对于该天线的实现很有参考价值.
침대현유고공솔미파무기복사천선적불족,제출료장자화등리자체통도용작전자맥충복사천선적사상-자화등리자체통도천선(MPCA),분석료MPCA주위위유모기체매질시MPCA소전파적일반모식.간단천술료MPCA적구체실현방법,근거MPCA적공작원리,건립료MPCA적궤하모형,이용변계조건도출료MPCA최엄격적색산방정.중점토론료전파상수수등리자체삼수、주위개질삼수화외가자장적변화.결과표명,유한자장중적MPCA여무궁대자장시구유일사불동적전파특성,저사결과대우해천선적실현흔유삼고개치.
In order to solve the problems existing in the current antenna for high power microwave weapon, the idea of a magnetized plasma channel used as antenna for radiating electromagnetic pulse is presented. The normal modes of Magnetized Plasma Channel Antenna (MPCA) in lossy gas are analyzed. The concrete realization method of this antenna is simply described. The geometric-model of MPCA is created based on the operating principle of this antenna. The strictest dispersion equation of MPCA is deduced by applying the boundary conditions of electromagnetic fields. Discussion is stressed on the variations of propagation constants with plasma parameters, surrounding material and external magnetic field. The a-nalysis shows that MPCA in a finite magnetic field possesses some different properties compared with a plasma channel antenna where infinite external magnetic field exists. These results are useful for practical application of the antenna.