High frequency analysis of a point-coupled parallel plate system

2017 ◽  
Vol 141 (5) ◽  
pp. 3696-3696
Author(s):  
Dean R. Culver ◽  
Earl Dowell
Keyword(s):  
Frequency Analysis ◽  
High Frequency ◽  
Parallel Plate ◽  
Plate System

High Frequency Analysis of a Dynamically Coupled Parallel Plate System

2017 ◽  
Author(s):  
Dean R. Culver ◽  
Earl Dowell
Keyword(s):  
Modal Analysis ◽  
Frequency Analysis ◽  
High Frequency ◽  
Parallel Plate ◽  
Damping Ratio ◽  
Parallel Plates ◽  
Linear Spring ◽  
Stiffness And Damping ◽  
Plate System

The behavior of a system comprised of two parallel plates coupled by a discrete, linear spring and damper is studied. Classical Modal Analysis (CMA) is used to illustrate this behavior, while specifically observing the effects of varying the stiffness and damping ratio of the coupling elements. Conditions under which the coupling may be approximated as rigid are identified. Additionally, conditions under which the coupling displacement reaches its maximum and minimum values are identified. This work also lays the groundwork for extending Asymptotic Modal Analysis (AMA) to systems with discrete, elastic, and dissipative coupling.

scholarly journals High Frequency Analysis of a Point-Coupled Parallel Plate System

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Dean R. Culver ◽  
Earl H. Dowell
Keyword(s):  
Modal Analysis ◽  
High Frequency ◽  
Parallel Plate ◽  
Energy Analysis ◽  
Spatial Relationship ◽  
Statistical Energy Analysis ◽  
Mean Square ◽  
Parallel Plates ◽  
Modal Density ◽  
Plate System

The root-mean-square (RMS) response of various points in a system comprised of two parallel plates coupled at a point undergoing high frequency, broadband transverse point excitation of one component is considered. Through this prototypical example, asymptotic modal analysis (AMA) is extended to two coupled continuous dynamical systems. It is shown that different points on the plates respond with different RMS magnitudes depending on their spatial relationship to the excitation or coupling points in the system. The ability of AMA to accurately compute the RMS response of these points (namely, the excitation point, the coupling points, and the hot lines through the excitation or coupling points) in the system is shown. The behavior of three representative prototypical configurations of the parallel plate system considered is: two similar plates (in both geometry and modal density), two plates with similar modal density but different geometry, and two plates with similar geometry but different modal density. After examining the error between reduced modal methods (such as AMA) to classical modal analysis (CMA), it is determined that these several methods are valid for each of these scenarios. The data from the various methods will also be useful in evaluating the accuracy of other methods including statistical energy analysis (SEA).

High Frequency Analysis of the Vivaldi Antenna Parameters

2020 ◽  
Author(s):  
Claudia Constantinescu ◽  
Calin Munteanu ◽  
Laura Grindei ◽  
Adina Giurgiuman ◽  
Claudia Pacurar ◽  
...  
Keyword(s):  
Frequency Analysis ◽  
High Frequency ◽  
Vivaldi Antenna

F.E.T. high-frequency analysis

1966 ◽  
Vol 113 (11) ◽  
pp. 1755 ◽  
Author(s):  
B. Reddy ◽  
F.N. Trofimenkoff
Keyword(s):  
Frequency Analysis ◽  
High Frequency
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