Reflection Coefficient - Lesson 7

This video lesson describes what happens when the load is not matched with the transmission line. This mismatch results in a portion of the wave being reflected as a backward wave at the load. This lesson is part of the Ansys Innovation Course: Transmission Line Theory. To access this and all of our free, online courses - featuring additional videos, quizzes and handouts - visit Ansys Innovation Courses at www.ansys.com/courses. This course was created for Ansys Innovation Courses by Kathryn Leigh Smith, Assistant Professor, UNC-Charlotte in partnership with Ansys.

[@ragdoll1248]

I'm not saying my professors aren't good, but you managed to clean up so many confusions I had in such short time.

[@emviso]

I'm glad! Thanks for the feedback!

[@New_Hercules]

I 'm in my final year of EEE and I've gone through lots of online tutorials for all types of subjects. I swear this series is one of the best I 've seen. Thank you for these short & informative videos!

[@emviso]

Thank you! I'm glad you found them helpful!

[@RealMyrmidon]

Wow, this is REALLY well explained. Thank you!

[@veys7035]

You are awesome. Amazing lectures

[@SouthernHerdsman]

Your lecture gives me butterflies in my stomach. This whole series is beautiful

[@emviso]

Thank you!

[@ahmedmuhammed6905]

One of my best channels thanks so much prof

[@emviso]

Thank you!

[@mbenitez6722]

You’re amazing thank you!!!

[@luckyboy-ih5hd]

very clear and helpful

[@emviso]

Thank you!

[@Ojackbauer0]

Very nice, good work.

[@emviso]

Thank you!

[@nickhopwood4233]

Great video

[@emviso]

Thank you!

[@matitrattore98]

very nice explanation

[@emviso]

Thank you!

[@yavuzciftci8283]

hi dear can we calculate the absorbed power by absorber from only the reflection coefficient? for example calculate the absorbed power by absorber when the reflection coefficient is -20dB

[@josana183]

First I wanna say, you made this make so much sense that I can't believe I didn't understand it sooner... also, I think you have an error at ~3:18. The absorbed voltage, I think, should be V_o+(1 - gamma) ex) say 2 percent is reflected, then gamma would be 0.02, but the remaining signal minus the reflection would be 0.98, 1 - gamma Thanks!

[@emviso]

It's correct as it is... remember that *voltage* is not a conserved quantity - *power* is.

[@subhashishbarik4319]

I disagree. If it’s correct the way it is then for gamma=1, V_L = 2V_0+ while the reflected voltage becomes V_0+. This doesn’t make sense. Can you please explain?

[@dilipmodhavadiya4832]

Nice explanation 👍 At 4:20 there is mismatch in waveform animation You can see waveform take phase shit at z=infinite

[@2krishnanunnis]

superb

[@zpc8536]

Ur great! Finally got it. But you said that z0 is fixed. The forward impedance. What determines z0? Can you help plz with a detailed answer? It will be soooo helpful thx!

[@danilhudakov8729]

Character In the video It's great, I like it a lot $$

[@colinchan5550]

Could you show the process of combination at 3:00?appreciate

[@rexyhassell1400]

can you remind me what the lower case l is? Why is it ok to assume this to be zero?

[@Baghdoesstuff]

Hi, At 4:40 you explained that gamma will have positive value , but its range is given in the video from -1 to +1. So is this a typo or am I missing something. Thank You.

[@emviso]

Hi Himanish, The magnitude of the reflection coefficient will be between zero and 1. Since the reflection coefficient can have any angle, its location on the real axis may be anywhere from negative one to one.

[@Shiny_Mewtwo]

Very good explanation better than my lecturer's 😐

[@emviso]

I'm glad you found it helpful! Thanks for commenting!

[@thespectre2012]

Hello, at 2:17 why is there a negative sign?

[@ratnasanam9324]

Nice madam

[@ratnasanam9324]

Please send me lesson 1 link

[@emviso]

Here's the playlist: kzbin.info/aero/PL2fRCJxWQiS8qheVohpFJSl1WF6lNNBWh

[@youmad1313]

i saw the reflection ceffocient today on the back of a car window with a reflection of a plane flying at a rate of speed ...i realized i saw reflection at the speed of light squared to our 3d reality....