EE 142 Animations and Demos

Steady-State Standing and Traveling Waves:

• Sine Wave: A simple wave traveling along a transmission line.
• Perfect Reflection: A sine wave perfectly reflected forms a standing wave.
• Sine Wave Plus a Partial Reflection: When the load is partially reflecting, the backwards wave does not form a perfect standing wave since the amplitude is different. Energy is now moving to the right. But is there a better way to visualize this? See the next animation.
• Sine Wave Plus a Partial Reflection: Now we decompose the partial reflection into a standing wave component and a forward traveling wave. Note that part of the forward traveling wave combines with the reflected wave to form a standing wave. The rest is the energy flowing towards the load.