EXPERIMENTAL STUDY OF THE INFORMATION COMPONENT IN SCATTERING FIELD OF RECEIVING ANTENNAS

Evgeny Smirnov,
Institute of Radio and Information Systems (IRIS), Vienna, Austria

DOI: 10.36724/2664-066X-2023-9-2-37-45

SYNCHROINFO JOURNAL. Volume 9, Number 2 (2023). P. 37-45.

Abstract

In previous theoretical works, it was shown that the total scattering field of an arbitrary receiving antenna includes an information component responsible for transmitting information from a plane wave to the antenna load, and its properties were studied. This work is devoted to the formulation of conditions that must be satisfied by receiving antennas used for experimental detection of the information component of the antenna scattering field. All the results indicated in these works were obtained in analytical form by solving the problem of plane wave scattering by an arbitrary receiving antenna in a rigorous formulation. Therefore, experiments to detect and study the properties of the information component of the antenna scattering field are becoming relevant at present. Since the shape of the information component of the antenna scattering field is known to us and is associated with the antenna polar pattern in transmission mode, when carrying out experimental work to study it, the reduction of the unknown orthogonal component of the antenna scattering field, unknown to us, against which it is necessary to highlight the information component, comes to the fore. component of the antenna scattering field. In order to be able to control the orthogonal component of the antenna scattering field, it is necessary to first find out on what parameters of the measuring setup it depends and the reason for its appearance. It is shown that on the surface of such an antenna in the receiving mode the current component should dominate, which is complex conjugate to the current on the surface of the same antenna in the transmitting mode, and the reason for the appearance of the stray field component of the antenna not participating in the process of transmitting information from plane wave to the antenna load.

Keywords:  Information Component, Scattering Pattern, Reflection Coefficient, Receiving Antenna, Orthogonal Component

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