Calculation and optimization of the parameters of a radiating distributed-feedback structure

A calculation is made of the width, asymmetry coefficient, and position of the maximum of a reflection line as a function of the parameters of a distributed-feedback waveguide structure. A study is made of the precision of a simplified method for calculating the reflection, emission, and transmission coefficients of a radiating structure. It is shown that the difference between the true and calculated values of the reflection coefficient does not exceed 3.5% in cases of practical importance.