An Accurate Method for the Computation of Radiated Power from Discontinuities in Waveguiding Structures

In [1] it was shown how to utilize the Matrix Pencil approach [2]-[3] to extract S parameters of printed circuits. This paper extends the method to the computation of the power radiated from discontinuities in waveguiding structures. Several examples have been analyzed. The first one is an open ended rectangular waveguide radiating into free space. Results agree with the experimental ones given in [4]. Results of other two examples (a microstrip line with rectangular and mitered bends, respectively) are also presented; they also agree with experimental results. This approach haves a number of advantages (listed in the introduction) with respect to other methods and allows accurate design of a wide variety of microwave devices.