Distance to First Voltage Minimum

This lecture continues the study of voltage and current distributions in a line terminated by an impedance ZL, focusing on the concept of distance to the first voltage minimum. By analyzing the phase angle of the voltage phasor V2Z, the lecture explores the conditions for minimum and maximum voltage amplitudes along the line. The behavior of the reflection coefficient gamma2Z in the complex plane is examined to determine the positions where voltage amplitudes are minimized. The lecture also discusses the relationship between gamma2Z and the voltage phasor V2Z, highlighting the conditions for maximum and minimum voltage amplitudes. Additionally, it explains how measuring the distance between consecutive voltage minima on the line allows for the determination of lambda/2, aiding in the calculation of the propagation velocity.