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METHOD OF REDUCING THE LEVEL OF BACK RADIATION OF ELECTROMAGNETIC WAVES OF APERTURE ANTENNAS

METHOD OF REDUCING THE LEVEL OF BACK RADIATION OF ELECTROMAGNETIC WAVES OF APERTURE ANTENNAS

Abstract

A method has been proposed and developed that allows you to significantly reduce the level of back radiation of electromagnetic waves of aperture-type antennas of any design. The essence of the method is the excitation of slowed surface waves on the outer side of the edge of the antenna aperture, which are in antiphase with electromagnetic waves of back radiation. Slowed surface waves are formed by an impedance metal comb, which performs the function of a retarding system, placed on the outer side of the opening edge of the antenna. The dependence of the formed characteristics of the electromagnetic field on the design parameters of the impedance comb is shown. The method was tested on the horn-slot ship antenna of the “Mius” type navigation radar station. The results of modeling and calculation of the directional pattern (DP) of the antenna confirm that the proposed method allows to reduce the level of the rear lobe of the directional pattern of the horn-slit antenna with an impedance comb by approximately 1.4 times.

Запропоновано та розроблено метод, що дозволяє суттєво знизити рівень зворотного випромінювання електромагнітних хвиль антен апертурного типу будь-якої конструкції. Суть методу полягає у збудженні уповільнених поверхневих хвиль на зовнішній стороні кромки апертури антени, що знаходяться у протифазі з електромагнітними хвилями зворотного випромінювання. Уповільнені поверхневі хвилі формуються імпедансною металевою гребінкою, що виконує функцію уповільнюючої системи, розміщеної на зовнішній стороні кромки розкриття антени.

Keywords

electromagnetic waves, діаграма спрямованості, impedance structures, directional diagram, електромагнітні хвилі, імпедансні структури, антени апертурного типу, aperture type antennas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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