Waveguide filters for the microwave parametric amplifiers and convertors

With development of the short-wave part of the MM-range, special urgency is being placed on the search for new physical principles of designing frequency-selective devices with minimal losses and dimensions, high stability and reproducibility of the electrical characteristics. In this connection special interest is being shown in the frequency-selective properties of regular waveguides paths. In the present work the results of strict mathematical modeling and experimental research of rejection filters based on H-plane rectangular waveguide, are submitted. The high accuracy of implementation and manufacturing with a method using galvanic plastics provides a deviation of experimental dependences from the theoretical within the limits of 1 % and completely eliminates the necessity for experimental completion and adjustment of the filter.