Postulga O.S.

Research of Characteristics of L-Shaped and Waveguide with Two Corner Cuts by Variational Method

Waveguides with one and two cuts (L-shaped waveguide and waveguide with two corner cuts) are used in microwave devices. Therefore, there is a need for new effective and rapid methods for calculating the characteristics of such waveguides. The variational method is used to calculate the eigenvalues of waves of L-shaped waveguide and waveguide with two corner cuts with arbitrary geometrical parameters. Polynomials orthogonal over the area of considered waveguides are unknown. We consider several types of the field approximation: on the basis of trigonometric and power functions.

Calculation of electric field lines of eigenwaves of the open comb

Based on the numerical solution of the boundary problem, we design and build the electric field lines of eigenwaves of the open comb. Furthermore, our study suggests that the electric field distribution in the open comb is not as simple as usually portrayed.

Computation accuracy of dispersion characteristic of open comb with combs of infinite thickness

This paper deals with ratios between the order of the system of linear algebraic equations for the amplitudes of oscillations in resonators and the number of accountable space harmonics that give the most precise solution of dispersion equation for open comb with combs of infinite thickness, using the method of partial areas. We also reveal the dependence between relative difference of the method of partial areas and the factorization method as well as phase shift of zero space harmonic at the period of the comb