Modeling Microwave Signals Transmitted Through a Rectangular Waveguide

Abstract

The coefficients of mutual coupling of circular waveguides placed in a microwave rectangular waveguide are determined. The dependences of the mutual coupling coefficient of circular waveguides located in a microwave rectangular waveguide on the design parameters are constructed.

General Approaches to Solving Problems of Analysis and Synthesis of Directional Properties of Antenna Arrays

“…are the azimuthal and axial components of the diffraction factor of the cylinder [19][20][21][22] for the nth array element, n=1,..., N, l0 is the length of the electric dipole, The coefficients and included in (12) and ( 13) are calculated according to the rules [8] (…”

“…The indefinite Lagrange multipliers included in ( 18) are the roots of the system of linear algebraic equations formed as a result of substituting the current distribution ( 18) into (1), and the resulting expression into the second equation of the system ( 16). (19) The solution of the resulting system of equations was found using the simplex method when converting the invertible matrix on the left side of (19) to the canonical form with the choice of the largest coefficient in absolute value. Antenna element currents satisfying distribution (18) with Lagrange multipliers converting equations of system (19) into identities.…”

“…(19) The solution of the resulting system of equations was found using the simplex method when converting the invertible matrix on the left side of (19) to the canonical form with the choice of the largest coefficient in absolute value. Antenna element currents satisfying distribution (18) with Lagrange multipliers converting equations of system (19) into identities. Due to the performed transformations, it became possible to correct the amplitudes and phases of the currents of each vibrator.…”

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

“…If the noise power is commensurate with the interference power, then the sum S + I is a positive-definite Hermitian matrix. In matrix theory, there are theorems defining the condition maximum ratio of Hermitian forms [12][13][14][15]. Based on these theorems, for a positive-definite Hermitian matrix S + I, the maximum expression ( 8) is achieved for the vector…”

Numerical simulation of characteristics of propagation of symmetric waves in microwave circular shielded waveguide with a radially inhomogeneous dielectric filling

“…The possibility of calculating the characteristics of waveguides with filling described by arbitrary analytical functions makes it possible to pose problems of parametric synthesis aimed at the implementation of devices with given characteristics. In addition, algorithms for calculating inhomogeneously filled circular waveguides can be used to study gradient optical fibers [13][14][15][16][17][18][19][20][21]. This paper proposes a method for calculating the characteristics of wave propagation of a circular shielded waveguide with a radially inhomogeneous dielectric filling, based on a modified Galerkin method as a variant of the spectral method.…”