Comments on “Wave propagation properties in high-temperature superconducting parallel-plate waveguides”

For the original paper see ibid., vol. 9, no. 5, p. 183-185 (1999). The commenter claims that the aforementioned paper contains some fundamental errors, particularly with regard to boundary condition for HTS structures, referred to as Meissner boundary condition. As a result of the incorrect boundary condition, the HTS surface is incorrectly modeled as a magnetic wall with H_t≈0. Consequently, the waveguide fields presented are the fields of structures with magnetic walls, but not of HTS structures