Measurements and Numerical Simulations of Interior Scattering from Simple PEC cavities with Complex Terminations

To understand the scattering effect of complex termination, the authors have designed, fabricated and measured two kinds of PEC cavities, i.e. rectangular and circular cavities, with different terminations. To confirm and verify the accuracy of the measured results, all cavities have also been simulated at selected frequencies using our in-house higher-order finite element-boundary integral (FE-BI) code. All measured and simulated results are in good agreement.