Standing Wave Example Consider a line terminated with impedance ZT = 3Z0 . We have. + VL. _. +
{"Image DocumentName": "Standing Wave ExampleConsider a line terminated with impedance ZT = 3Z0 . We have. + VL. _. + VT. _.", "Image ImageDescription": "ZS. Z0. ZT = 3 Z0. +_. VS. This means that the amplitude of the reflected wave is half that of the. forward wave. Since the phase. difference is zero at x = 0, the amplitudes add, yielding a voltage maximum: |VL(max)| = (1+r)| VF | = 1.5 |VF| One quarter wave distant from the termination, x = -l/4, the reflection coefficient vector will have rotated by p radians, the reflected wave will be exactly out of phase with the forward wave and the amplitudes will subtract, yielding a voltage minimum: |VL(min)| = (1-r)| VF | = 0.5 |VF| x. At x = -l/2 (an additional quarter wave away from the load), the phase difference will be 2p (or zero), and there will be another voltage maximum. This variation in amplitude of VL as we move along the line is called a standing wave, and is characterized by the Standing Wave Ratio (SWR), which is the ratio of Voltage maximum to voltage minimum:", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}