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本文导出计算矩形波导宽壁上的纵向并联(Shunt)矩形辐射缝阻抗的变分解。这个解是Oliner解法的引伸,它得出计及缝对波导中心线的偏置时的谐振长度。利用现有文献中报导的结果,可以把阻抗的计算推广到大型阵列环境中有或没有介质复盖的一个缝的阻抗计算。在一些合理的假设条件下,把实验数椐与理论值相比较,就可得出实际应用中两端呈半圆形缝的谐振长度的半经验计算公式。本文介绍的计算方法经实验证实,对设计开缝波导阵列是有价值的。
In this paper, we derive the variational solutions to the impedance of longitudinal Shunt rectangular radiating slit on the wide wall of rectangular waveguide. This solution is an extension of the Oliner solution, which gives the resonant length when the offset of the slot to the waveguide centerline is taken into account. Using the results reported in the existing literature, the calculation of impedances can be generalized to the impedance calculation of a slit with or without media coverage in large array environments. Under some reasonable assumptions, comparing the experiment number 椐 with the theoretical value, a semi-empirical formula for calculating the resonant length of a semi-circular slit at both ends can be obtained. The calculation method introduced in this paper has been verified experimentally, it is valuable to design a slotted waveguide array.