Optimum compact H- and E-plane corners in rectangular waveguide

H- and E-plane corners in rectangular waveguide are widely used in microwave systems. An important aspect in the design of these components is to maintain a specified return loss over a wide-frequency band. Designs that are compact in size are also required to fulfill space and insertion-loss restrictions. In this paper, two families of compact matched corners are considered: the multistepped and multimitered compact matched corners. Optimum physical dimensions that minimize return losses over the full-frequency band are given for the first three members of each family, for the H- and E-plane cases. In addition, a yield analysis of the optimum structures is included. The results are obtained by using the electromagnetic commercial simulator muWave Wizard. (C) 2004 Wiley Periodicals, Inc.