Complex directional antenna consists of separate near-omnidirectional antennas (radiating elements) positioned in the space and driven by high-frequency …

Mathematic modeling of the antenna array composed of microstrip radiators above an impedance surface of a generalized cylinder

Asymptotic solution for the diffraction problem on a periodic array of microstrip radiators located above the surface of an infinite generalized cylinder, the curvature radius of which satisfies the condition of slow change along the guide, is considered. By using the matrix reflectivity coefficients, the problem is solved assuming the multilayer isotropic dielectric coating is present. For partial excitation the electric Green tensor function of Maxwell equations is written in closed form, which...

Impedance and polarizational characteristics of rectangular printed-circuit radiators in plane phased antenna arrays

This work considers results of research of characteristics of rectangular printed-circuit radiators in plane phased antenna arrays. The research is conducted by using computer modeling and the mathematical model described in [1].
Proceedings of institutes of MV and SSO USSR. Radioelectronics

Research of director radiators in convex cylindrical antenna array

Based on the asymptotic theory, characteristics of convex cylindrical antenna array consisting of director radiators are studied. To determine the distribution of currents of the radiator vibrators, the numeric projective method is used. Results of numeric computations are presented.
Proceedings of institutes of MV and ...

Mutual relation in convex cylindrical antenna arrays of arbitrary form composed of aperture radiators

Based on the asymptotic diffraction theory methods, the problem of determining the near field of the convex cylindrical antenna array composed of aperture radiators is reduced to the boundary value problem in the single cell of the array, which is solved using the Galerkin method. The asymptotic theory is further developed, which provides representation of the radiator ...

Characteristics of printed-circuit radiators having circular polarization in a plane phased antenna array

Results of numeric modeling of impedance and polarizational characteristics of single-channel printed-circuit radiator having circular polarization in the base of the antenna array are presented. Possibilities for optimizing the characteristics in the frequency band and scanning angle sector.
Proceedings of institutes of MV and SSO USSR. Radioelectronics

Mathematical model and results of research of characteristics of printed-circuit radiators in plane phased antenna arrays

The results of research of characteristics of printed-circuit radiators in a plane phased antenna array is presented, based on the infinite plane antenna array model.
Antennas

Equations for waveguide, impedance and lens antenna arrays are formulated taking into account excitation conditions and interconnection between radiators. The arrays can be located on flat or curved surfaces.
Antenna arrays