In general, there are four two-element networks. However, in actual practice, usually only two are realizable. The sketch below identifies a Type 1 and a Type 2 form. Each creates two circuits.

L-Match Networks                  Given the source and load impedance, calculate reactance                  values for impedance match networks.                  Enter Load Z (RL,XL) [<Enter>=Quit] ? _

Let's match a 50 ohm source to a 100+j20 load. In answer to the above question, enter "100,20" (make sure you put a comma between the two numbers) and press <Enter>. Next input "50,0" and press <Enter> again.

Here is the Type 1 circuit calculation:

                Ckt #1:  X1 = 123.923 ohms,   X2 = -51.962 ohms

                Ckt #2:  X1 = -83.923 ohms,   X2 = 51.962 ohms