Complex Propagation Constants of Bent Hollow Waveguides with Arbitrary Cross Section

An integral representation of the complex propagation constant has been derived from Maxwell´s equations for cylindrical, hollow, bent, oversized waveguides with uniform curvature and with arbitrary cross sections. The method makes the calculations much simpler than the conventional method, i.e., the characteristic-equation method, although it has not yet been tried for three-dimensional bent waveguides.