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Smith Chart Impedance Transformation

Inputs

Frequency (f)
Char. Impedance (Z₀) Ω
Load Impedance (Z) Ω
Add Component:
─[L]─
Series L
─┤├─
Series C
─[R]─
Series R
║ L ║
Parallel L
║ C ║
Parallel C
║ R ║
Parallel R
───
TL
┬ O
Open Stub
┬ S
Short Stub
Units supported: Hz/kHz/MHz/GHz, F/pF/nF/uF, H/pH/nH/uH/mH, Ω/kΩ/MΩ, m/cm/mm, lambda/λ. Use 'j' for imaginary part.

Results


            


            
            

                 
                 

                    
Smith Chart

                    
 
                        Const R (R)
                        Const X (X)
                        Const G (G)
                        Const B (B)
                        Const |Γ| (T)
                    

                 

                

                    
                


                
                
Automatic Matching Network Design

                
                

                  
                  

                    
Calculates 2-element L-section matches (up to 8 solutions).

                    
                  

                  
                  

                    
Single parallel stub (after TL) matching.

                    

                        
                        
                    

                     

                          Stub Z₀ (Ω):
                          
                      

                    
                  

                  
                                     
                               
                 
                                    
                                    

                                        
Double parallel shorted stub tuner. Specify spacing and stub Z₀.

                                        

                                            Spacing (d):
                                            
                                        

                                        

                                            Stub Z₀ (Ω):
                                            
                                        

                                         

                                            
                                            
                                        

                                        
                                    

                                     
                                     

                                      
Triple parallel stub tuner. **Fix l3 (stub at load)**, calculate l1 & l2.

                                      

                                          d1 (Load-Stub3):
                                          
                                      

                                       

                                          d2 (Stub3-Stub2):
                                          
                                      

                                       

                                          d3 (Stub2-Stub1):
                                          
                                      

                                      
                                      

                                          Stub 3 Length (l3 @ Load):
                                           
                                      

                                      

                                          Stub Z₀ (Ω):
                                          
                                      

                                       

                                          
                                          
                                      

                                      
                                  


                                                     
                    

                      
Triple parallel shorted stub tuner (Optimizer). Finds lengths l1, l2, l3.

                      

                          dL3 (Load-S3)/λ:
                           
                      

                       

                          d32 (S3-S2)/λ:
                           
                      

                       

                          d21 (S2-S1)/λ:
                           
                      

                       

                       Initial Guesses (lengths in λ, 0 to 0.5):
                       

                           l1 (Source):
                           
                           l2 (Middle):
                           
                           l3 (Load):