Open AccessSemi-transparent lossy surfaces for cutoff of the fields in microwave shadow domain
Author(s) -
Dmitry Tatarnikov,
Alexey Generalov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1461/1/012045
Subject(s) - lossy compression , electrical impedance , antenna (radio) , optics , microwave , acoustics , physics , computer science , electrical engineering , engineering , telecommunications , artificial intelligence
Semi-transparent surfaces for cutoff of the fields in the shadow domain of an antenna are considered. For relatively large screen sizes, the analytical synthesis procedure of the grid impedance is formulated in the approximation of geometric optics (GO), which provides a purely real impedance. For smaller sizes, a numerical procedure to synthesize realizable complex impedance has been implemented. A prototype of the compact antenna system with lossy semi-transparent impedance surface has been developed. No noticeable degradation of the antenna gain in the open space domain has been detected. Perspectives for further reduction in the screen size by employment of a dual-current layer are discussed; estimates of the serial impedance of the magnetic portion are provided.