DocumentCode
2394812
Title
Analysis of the lagrange multipliers method using the technique of analytical integration applied to waveguides
Author
de Andrade Filho, Moacir Moura ; Alves, Plínio Ricardo Ganime
Author_Institution
Univ. of Brasilia, Brasilia
fYear
2007
fDate
Oct. 29 2007-Nov. 1 2007
Firstpage
729
Lastpage
733
Abstract
The cutoff frequencies of the rectangular waveguides are calculated using the technique of the Lagrange Multipliers. The application of the technique of analytical integration is made with the integrals written in the homogeneous coordinates of the finite element. The final system is badly conditioned, symmetrical and is not defined positive. We present a form to turn it out to be defined positive.
Keywords
finite element analysis; rectangular waveguides; analytical integration; lagrange multipliers method; rectangular waveguides; Cutoff frequency; Dielectrics; Electromagnetic waveguides; Finite element methods; Integral equations; Lagrangian functions; Laplace equations; Matrices; Rectangular waveguides; Transmission line matrix methods;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave and Optoelectronics Conference, 2007. IMOC 2007. SBMO/IEEE MTT-S International
Conference_Location
Brazil
Print_ISBN
978-1-4244-0661-6
Electronic_ISBN
978-1-4244-0661-6
Type
conf
DOI
10.1109/IMOC.2007.4404364
Filename
4404364
Link To Document