Eigen parameters of Bragg layered structures

The influence of various types of distortion of periodicity on the eigen parameters of the layered Bragg resonators has been analyzed. The conditions of reduction of the quality factor of unwanted side Bragg oscillations in quasiperiodic apodized resonators have been determined. It has been proposed the construction of periodic and quasiperiodic structures and apodized Bragg resonators with thin contrast layers, which are relatively easy technologically implemented in the microwave range. “Unsuccessful” positions of active layers and lumped elements are observed. The measurements results of reflection coefficient of periodic and quasiperiodic apodized structures and resonators with thin contrast layers are presented.