Abstract:
The rigorous solution to the problem of wave scattering by a single inductive
post in a continuously curved rectangular waveguide is presented. The position of the
post and its radius are arbitrary. The waveguide curvature can be varied over wide
limits. An efficient mathematical model of the unit is based on the domain-product
technique. The theory developed is applied to the normalised reactances of the
discontinuity and the induced surface current. The results obtained lend support to the
validity of the known approximate solution for a thin post as far as this approximation
goes. It is found that data for a centrally placed post deviate slightly from those for a
straight guide in a broad interval of curvature variation. The off-centre shift affects the
characteristics appreciably. Over full waveguide bandwidth, the paper provides one
with the data that are essential in the design of devices containing the uniform bends,
such as band-pass filters or transmission resonators, etc.
