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本文给出了确定矩形波导窄边斜槽的谐振长度和导纳的方法,同时用平面波角频谱和模电流的不连续性导出了槽导纳的表达式。如果槽切入波导宽边的深度为零,本文导得的谐振电导表达式与Stevenson导得的表达式完全相同。本文还比较了切入深度均为3.5毫米时,谐振电导随槽倾斜角度变化的理论值和实验结果。
In this paper, the method to determine the resonance length and admittance of the narrow side chute of a rectangular waveguide is given, and the expression of slot admittance is derived from the discontinuity of the plane wave angle spectrum and the mode current. If the depth of the trough into the wide side of the waveguide is zero, the resonant conductance expression derived in this paper is identical to the one derived by Stevenson. In this paper, the theoretical values and experimental results of resonant conductance with slot inclination angle are also compared when the depth of cut is 3.5 mm.