On the Performance of the Least Squares Method for Waveguide Junctions and Discontinuities (Short Papers)

The high computational expenditure of the least squares boundary residual method restricts its application to certain problems. It is therefore necessary to utilize the inherent simplicity of special cases together with convergence-optimization criteria in order to reduce computational time and storage requirements. The problem of the coaxial-to-circular waveguide junction is presented as an illustrative example of how this is performed. A selection criterion is also suggested to determine the optimum weighting factor.