STUDY ON MODE COUPLING COEFFICIENTS IN CURVED CORRUGATED CIRCULAR WAVEGUIDES
弯曲波纹圆波导中模式耦合系数的研究

Mode coupling due to curvature in circumferentially corrugated circular waveguides is analyzed in this paper. Starting from Maxwell's equations in the annular orthogonal curvilinear coordinate-system, the integral formulae for coupling coefficients are derived. On the basis of them, the explicit expressions of coupling coefficients between positive or opposite modes are derived.