Impedance Matching Devices

Figure 1: Schematic for an L-Pad

The impedance of a component or transmission line is a major concern when designing RF/microwave systems.  At the circuit level, optimum performance is obtained when devices are matched to the desired system impedance, typically 50Ω or 75Ω. At the system level, each building block must be matched to the system impedance to maintain performance along the signal path.