Library · IAA RAS

Papers

Amplitude-Phase Distributions of Scattering Fields of Antennas-Reflectors Feeds

Transactions of IAA RAS, issue 64, 15–23 (2023)

Keywords: near-fields of antennas, scattering fields of antennas, planar vector network S-parameters of antennas

Abstract

In order to study the structure of the scattering fields of the feeds of antennas reflectors and antenna arrays in their near zone, determining their radiation and scattering patterns, experiments were carried out with a pyramidal horn of the mm band, a broadband ridged horn of the cm band and a narrow-band antenna array of the dm wavelength range. In the experiment, using vector circuit analyzers on a plane parallel to the aperture of the studied antennas, complex S-parameters were measured at the antennas inputs when the antenna probe scanned the plane near the aperture of the antenna under study in its near zone at different distances between them. The structure of the amplitude-phase distributions of antennas, their dependence on the position of the probe and the reflection coefficient of its inputs are revealed; methods of calibration of measurements, methods of accounting for the influence of the environment around the communication channel — “the antenna under study and the antenna-probe” are proposed. The results of the work can be used also to improve the accuracy of calibration of radio astronomical antennas.

Citation

Text

BibTeX

RIS

Yu. I. Belov. Amplitude-Phase Distributions of Scattering Fields of Antennas-Reflectors Feeds // Transactions of IAA RAS. — 2023. — Issue 64. — P. 15–23.

@article{belov2023,
  abstract = {In order to study the structure of the scattering fields of the feeds of antennas reflectors and antenna arrays in their near zone, determining their radiation and scattering patterns, experiments were carried out with a pyramidal horn of the mm band, a broadband ridged horn of the cm band and a narrow-band antenna array of the dm wavelength range.
In the experiment, using vector circuit analyzers on a plane parallel to the aperture of the studied antennas, complex S-parameters were measured at the antennas inputs when the antenna probe scanned the plane near the aperture of the antenna under study in its near zone at different distances between them.
The structure of the amplitude-phase distributions of antennas, their dependence on the position of the probe and the reflection coefficient of its inputs are revealed; methods of calibration of measurements, methods of accounting for the influence of the environment around the communication channel — “the antenna under study and the antenna-probe” are proposed. The results of the work can be used also to improve the accuracy of calibration of radio astronomical antennas.},
  author = {Yu.~I. Belov},
  doi = {10.32876/ApplAstron.64.15-23},
  issue = {64},
  journal = {Transactions of IAA RAS},
  keyword = {near-fields of antennas, scattering fields of antennas, planar vector network S-parameters of antennas},
  pages = {15--23},
  title = {Amplitude-Phase Distributions of Scattering Fields of Antennas-Reflectors Feeds},
  url = {http://iaaras.ru/en/library/paper/2141/},
  year = {2023}
}

TY  - JOUR
TI  - Amplitude-Phase Distributions of Scattering Fields of Antennas-Reflectors Feeds
AU  - Belov, Yu. I.
PY  - 2023
T2  - Transactions of IAA RAS
IS  - 64
SP  - 15
AB  - In order to study the structure of the scattering fields of the feeds
of antennas reflectors and antenna arrays in their near zone,
determining their radiation and scattering patterns, experiments were
carried out with a pyramidal horn of the mm band, a broadband ridged
horn of the cm band and a narrow-band antenna array of the dm
wavelength range.  In the experiment, using vector circuit analyzers
on a plane parallel to the aperture of the studied antennas, complex
S-parameters were measured at the antennas inputs when the antenna
probe scanned the plane near the aperture of the antenna under study
in its near zone at different distances between them.  The structure
of the amplitude-phase distributions of antennas, their dependence on
the position of the probe and the reflection coefficient of its
inputs are revealed; methods of calibration of measurements, methods
of accounting for the influence of the environment around the
communication channel — “the antenna under study and the antenna-
probe” are proposed. The results of the work can be used also to
improve the accuracy of calibration of radio astronomical antennas.
DO  - 10.32876/ApplAstron.64.15-23
UR  - http://iaaras.ru/en/library/paper/2141/
ER  -