Thermal Modeling of Heterogeneous Tumours with Irregular Microwave Antenna Arrays

1993 ◽  
pp. 139-142
Author(s):  
A. McCowen ◽  
K. L. Clibbon
Keyword(s):  
Antenna Arrays ◽  
Thermal Modeling ◽  
Microwave Antenna

Frequency selective antenna radome based on metal-dielectric gratings and perforated screens

Antennas ◽  
2021 ◽  
Author(s):  
A. O. Kasyanov
Keyword(s):  
Antenna Arrays ◽  
Electromagnetic Compatibility ◽  
Numerical Study ◽  
Numerical Data ◽  
Microwave Antenna ◽  
Frequency Selective Surfaces ◽  
Radio Electronic ◽  
Dielectric Gratings ◽  
Study Results ◽  
Frequency Selective

This article is devoted to the analysis of numerical study results of printed frequency selective surfaces scattering characteristics. It has been shown that these frequency selective surfaces may be used as antenna radomes. Numerical results have been obtained by full-wave simulation of frequency-selective surfaces with dielectric covers. The numerical research results of the scattering characteristics of printed frequency selective surfaces as antenna radomes based on metal-dielectric gratings and thick perforated screens have been presented. A comprehensive numerical study of microwave frequency selective surfaces based on multi-element multilayer printed reflectarrays and thick perforated screens has been carried out. Constructive solutions for metal-dielectric structures in integral design, realizing the functions of frequency selective surfaces, have been found. These solutions are based on performed numerical studies. The problems of constructive implementation of multilayer planar spatially selective as frequency selective surfaces have been considered. These frequency selective surfaces are integrated into radiation systems of modern multi-element printed phased arrays. The problems connected with creation of such arrays have been also considered. The numerical simulation results for frequency selective surfaces based on metal gratings with dielectric covers have been obtained. These results can be used to select the most rational options for the topology of metal-dielectric gratings. Such solutions may be useful for design of multifunctional radomes in microwave antenna systems. Based on the obtained numerical data, the possibilities of using flat gratings as frequency selective surfaces in the composition of antenna radomes have been considered. The spatial frequency-selective structures proposed in this work are performed as multi-planar printed gratings. These gratings are designed to ensure electromagnetic compatibility of closely spaced radio electronic sets. These radio electronic sets operate in close frequency ranges. They contain antenna arrays. These arrays are placed under the antenna radomes.

Antenna radome based on metal-dielectric gratings as angular filter at microwaves

2021 ◽  
Author(s):  
A.O. Kasyanov
Keyword(s):  
Antenna Arrays ◽  
Electromagnetic Compatibility ◽  
Numerical Study ◽  
Numerical Data ◽  
Microwave Antenna ◽  
Radio Electronic ◽  
Dielectric Gratings ◽  
Study Results ◽  
Frequency Selective ◽  
Metal Gratings

This article is devoted to the analysis of numerical study results of printed angular filters scattering characteristics. It is shown these angular filters may be used as antenna radomes. Numerical results are obtained by full-wave simulation of frequency-selective surfaces with dielectric covers. The numerical research results of the scattering characteristics of a printed angular filter as antenna radome based on metal-dielectric gratings are presented. A comprehensive numerical study of microwave angular filters based on multi-element multilayer printed reflect arrays has been carried out. Constructive solutions for metal-dielectric structures in integral design, realizing the functions of angular filters, are found. These solutions are based on performed numerical studies. The problems of constructive implementation of multilayer planar spatially selective as angular filters are considered. These angular filters are integrated into the radiators and feeders of modern multi-element printed phased arrays. The problems connected with creation of such arrays are also considered. The numerical simulation results for angular filters based on metal gratings with dielectric covers are obtained. These results can be used to select the most rational options for the topology of metal-dielectric gratings. Such solutions may be useful for design of multifunctional radomes in microwave antenna systems. Based on the obtained numerical data, the possibilities of using flat gratings as angular filters in the composition of antenna radomes are considered. The spatial frequency-selective structures proposed in this work are performed as multi-planar printed gratings. These gratings are designed to ensure electromagnetic compatibility of closely spaced radio electronic sets. These radio electronic sets operate in close frequency ranges. They contain antenna arrays. These arrays are placed under the antenna radomes. At the same time, the installation of angular filters in the antenna radomes makes it possible to eliminate the appearance of unwanted grating lobes in the radiation patterns of sparse antenna arrays of promising radioengineering sets at microwaves.

The distribution of power and heat produced by interstitial microwave antenna arrays: II. The role of antenna spacing and insertion depth

1988 ◽  
Vol 14 (3) ◽  
pp. 537-545 ◽  
Author(s):  
David L. Denman ◽  
Alvis E. Foster ◽  
G.Cooper Lewis ◽  
Kevin P. Redmond ◽  
Howard R. Elson ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna ◽  
Insertion Depth ◽  
Distribution Of Power

On-axis DC sputtered YBa/sub 2/Cu/sub 3/O/sub 7/(-x) films up to 2" in diameter for microwave antenna arrays

1995 ◽  
Vol 5 (2) ◽  
pp. 1729-1732 ◽  
Author(s):  
G. Muller ◽  
B. Aschermann ◽  
H. Chaloupka ◽  
W. Diete ◽  
M. Getta ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna

The distribution of power and heat produced by interstitial microwave antenna arrays: I. Comparative phantom and canine studies

1988 ◽  
Vol 14 (1) ◽  
pp. 127-137 ◽  
Author(s):  
David L. Denman ◽  
Howard R. Elson ◽  
G. Cooper Lewis ◽  
John C. Breneman ◽  
Cathy L. Clausen ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna ◽  
Distribution Of Power

Chaos in microwave antenna arrays

2002 ◽  
Author(s):  
R.J. Ram ◽  
R. Sporer ◽  
H.-R. Blank ◽  
P. Maccarini ◽  
H.-C. Chang ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna

Changes in heating patterns of interstitial microwave antenna arrays at different insertion depths

1989 ◽  
Vol 5 (4) ◽  
pp. 499-507 ◽  
Author(s):  
K. W. Chan ◽  
C. K. Chou ◽  
J. A. McDougall ◽  
K. H. Luk ◽  
N. L. Vora ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna

SAR distributions in interstitial microwave antenna arrays with a single dipole displacement

1993 ◽  
Vol 40 (9) ◽  
pp. 925-932 ◽  
Author(s):  
K.L. Clibbon ◽  
A. McCowen ◽  
J.W. Hand
Keyword(s):  
Antenna Arrays ◽  
Microwave Antenna ◽  
Single Dipole
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