Title : 
On the orthogonality of approximate waveguide mode functions
         
        
        
            Author_Institution : 
National Defense Research Institute, Linköping, Sweden
         
        
        
        
        
        
        
            Keywords : 
Boundary conditions; Closed-form solution; Conductors; Equations; Ground support; Periodic structures; Phased arrays; Region 1; Region 2; Strips;
         
        
        
        
            Conference_Titel : 
Antennas and Propagation Society International Symposium, 1979
         
        
        
            DOI : 
10.1109/APS.1979.1148124