A quasi-optical beam steering multilayer lens with scanning in -plane is analyzed. A full-wave mathematical model is developed to predict the scanning characteristics of the lens. The model is used to optimize the performance of a three-bit beam steering lens. It is demonstrated that the calculated conversion coefficients for the optimized lens are better than 2 1 dB in the frequency band from 27.5 to 32.5 GHz for transmission elevation angles up to 28 . A two-bit lens that corrects the phase front at the aperture of a short -plane sectoral horn has been designed, fabricated and tested to verify the model. Measured radiation pattern of the -plane sectoral horn with correcting lens agrees well with the predictions based on the model.
Abstract:We propose an study of parametric resonance between P-waves and S-waves, which can be used to describe various nonlinear phenomena qualitatively and to obtain bifurcation diagrams quantitatively. We have shown that it is a good simulation of parametric phenomena, and our results are in good agreement with theoretical predictions. In particular, it may be used to study the influence of pump P waves on the instability's threshold and amplitude of S waves in earthquake phenomena that could be simulated with an electronic model.
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