Investigation of the potential characteristics of a satellite multi-beam hybrid-mirror antenna by modeling the process of adaptation to random deformations of the reflector

A technique for the synthesis of two-mirror cylindrical antenna systems for a given amplitude distribution in the aperture has been developed. At the first stage geometrical-optical synthesis is carried out, at the second stage a refined solution is found using the field of the feed on the secondary mirror found by the numerical method of finite element. As an example, a two-mirror cylindrical antenna system with a horn-lens feed and a uniform field distribution in the main mirror aperture has been synthesized. Using full-wave simulation by the finite element method, the analysis of the radiation characteristics of a synthesized two-mirror antenna system is carried out. The scanning characteristics of the antenna system by turning the main mirror are investigated. The efficiency of a cylindrical two-mirror antenna system with a horn-lens waveguide transition in the E-plane and an H- sectorial horn feed reaches 0.95 i.e. is close to the limiting value. When scanning the main lobe of the pattern in an angular sector of 27 degrees due to the rotation of the main mirror gain exceeds 26 dB, and efficiency exceeds 0.8.

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Modeling of the directional properties of Kassegrain two-mirror antenna with dual-band logoperiodic irradiator with MathCAD

Radioengineering ◽

10.18127/j00338486-202102-01 ◽

2021 ◽

Author(s):

A.M. Karlov ◽

E.V. Volkhonskaya ◽

E.V. Korotey ◽

K.V. Vlasova

Keyword(s):

Dual Band ◽

Mirror Antenna

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Plasmonic Nanobar-on-Mirror Antenna with Giant Local Chirality: a New Platform for Ultrafast Chiral Single-Photon Emission

Nanoscale ◽

10.1039/d1nr05951c ◽

2022 ◽

Author(s):

Huatian Hu ◽

Wen Chen ◽

Xiaobo Han ◽

Kai Wang ◽

Peixiang Lu

Keyword(s):

Information Transmission ◽

Single Photon ◽

Photon Emission ◽

Single Photons ◽

Single Photon Emission ◽

Information Encoding ◽

Additional Degree ◽

Binary Information ◽

Mirror Antenna ◽

New Research

Providing an additional degree of freedom for binary information encoding and nonreciprocal information transmission, chiral single photons have become a new research frontier in quantum optics. Without using complex external...

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Analysis of Current State and Prospects for Development of Methods for Monitoring Tension of Radio-Reflecting Mesh on Deployable Frame of Large Mirror Antenna

Proceedings of Higher Educational Institutions Маchine Building ◽

10.18698/0536-1044-2021-2-41-55 ◽

2021 ◽

pp. 41-55

Author(s):

S.N. Sayapin

Keyword(s):

Optical Methods ◽

Tension Force ◽

Monitoring Methods ◽

Automated Control ◽

Automated Method ◽

Current State ◽

Mechanical Methods ◽

Band Method ◽

Mirror Antenna ◽

Relationship Of

The article considers the problems of developing an operating automated method for monitoring the force and uniformity of tension of a radio-reflecting mesh on the deployable frame of large mirror antennas. Based on the performed analysis of known control methods they are classified as contact mechanical methods and non-contact optical ones. It is shown that only optical monitoring methods provide automated control of the tension force of the radio-reflecting mesh on the frame. Among the known optical methods for monitoring, only the moire band method allows creating an immediate picture of the uniformity of the tension of the radio-reflecting mesh over the entire surface under consideration. The method is based on the revealed relationship of moire patterns with the uniformity and tension force of the radio-reflecting mesh. The advantages of the described method are shown; the main advantage is the possibility of installing a radio-reflecting mesh on the deployable frame of the large mirror antenna in real time. Due to its versatility, the proposed method can be used in any other structures where the element being tested is a grid, regardless of the material from which it is made.

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