Impedance Matching

Impedance matching is the practice of designing circuit connections so that the output impedance of one component equals the input impedance of the next component in the signal path. This technique maximizes power transfer and minimizes signal reflections, which can cause distortion, loss, or interference. It is essential in RF circuits, audio systems, and high-frequency digital designs where signal integrity is critical. Common examples include matching antenna impedance to transmission lines (typically 50Ω or 75Ω) and matching amplifier outputs to speaker loads.