An efficient approach for characterizing power combining dividing network of distributed phased array antenna

An approach that mixes numerical and analytical techniques is proposed for modeling the circuit discontinuities and the power-dividing networks that feed the T/R modules in Synthetic Aperture Radar (SAR). This approach is based on a combination of mode matching and boundary integral techniques, and suitable for modeling a wide range of N-port microwave networks made with waveguide, coaxial and microstrip components. While it offers the possibility of handling complex shaped junctions, it converges much faster than other numerical methods implemented in commercial software package such as FEM, FD, MoM and others.