CATV Minimum Loss Pad for 75Ω Measurements

Abstract: CATV systems are based on 75Ω characteristic impedance, but typical laboratory equipment has 50Ω characteristic impedance. A 75Ω to 50Ω minimum loss pad (MLP) is a broadband method to measure voltage and power accurately. This article describes the resistor network required for such a MLP. Equations are also derived for a MLP with general source and load impedance.