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首页> 外文会议>IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications vol.2; 20050808-12; Beijing(CN) >Caculation of a Low Q Value, Coaxial Output Cavity
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Caculation of a Low Q Value, Coaxial Output Cavity

机译：低Q值的同轴输出腔的计算

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摘要

The low Q value coaxial output-cavity with large coupling holes is often used in the High Power Microwave devices. The structure of this cavity is of three dimensions with travelling wave boundary, and it is very difficult to caculate its high frequency characteristics by methods of lumped parameters and numerical. On this condition, a new kind of analytical methods is developed in this paper. According to the equivalent principle of field the cavity is divided into five regular regions. The field in each region is excited by proper surface magnetic current density on the common interface and it can be expressed as integral of Green functions. The magnetic fields of two adjacent regions are then matched on the common interface to obtain a set of integral equations. From the integral equations the resonant frequency of the cavity and the magnetic current density can be solved. The coaxial output cavity is also calculated by Mafia code. The calculating results are matched well with the experiment
机译：具有大耦合孔的低Q值同轴输出腔通常用于高功率微波设备中。该腔的结构是具有行波边界的三维，很难通过集中参数和数值方法来计算其高频特性。在这种条件下，本文提出了一种新的分析方法。根据等效场原理，空腔被分为五个规则区域。每个区域中的磁场由公共界面上适当的表面磁电流密度激发，并且可以表示为格林函数的积分。然后，在公共界面上将两个相邻区域的磁场匹配，以获得一组积分方程。根据积分方程，可以求解空腔的谐振频率和磁电流密度。同轴输出腔也通过黑手党代码计算。计算结果与实验吻合得很好

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