%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Lee/fem_filter
% name: Lee/fem_filter
% [FEM bandpass microwave filter, 500MHz. Center for Comp. Electromag., UIUC]
% id: 1878
% date: 2008
% author: S.-H. Lee
% ed: T. Davis
% fields: name title A id date author ed kind notes
% kind: electromagnetics problem
%-------------------------------------------------------------------------------
% notes:
% From the Univ of Illinois at Urbana-Champaign, Center for Computational 
% Electromagnetics (development and application of the finite element     
% method for analyzing antennas, high-frequency circuits, high-speed      
% circuits, and so on).  The governing equations are Maxwell's equations. 
% The matrix results from the finite-element discretization of a bandpass 
% microwave filter at 500 MHz. The first-order vector element is employed.
% The absorbing boundary condition is applied on the outer boundary of the
% structure for emulating the open space.  The port boundary condition is 
% applied on each port of the circuit for the truncating the computational
% domain and exciting the circuit. Due to these boundary conditions, the  
% finite-element system matrix is complex.                                
%-------------------------------------------------------------------------------
