Title : 
Use of FFT in microstrip capacitance calculations
         
        
        
            Author_Institution : 
Marconi Research Centre, GEC Research Laboratories, Chelmsford, UK
         
        
        
        
        
        
            Abstract : 
A method is described which can be used to calculate the capacitances of microstrip-like transmission lines on a dielectric substrate contained with a conducting box. The FFT is used once to sum a large number of series, and, by the judicious use of the resulting summations, the approximate capacitances of any strips on the dielectric substrate can be obtained after the solution of a set of simultaneous equations.
         
        
            Keywords : 
capacitance; fast Fourier transforms; strip lines; transmission line theory; FFT; conducting box; dielectric substrate; microstrip capacitance calculations; series summation; simultaneous equations; transmission lines;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:19850059