Hello, this is my first post to the All About Circuits forums and I'm not sure I've posted in the correct forum.
I am learning about Transmission Lines and have been reading the article Google found on the All About Circuits website, Home/Textbooks/Vol II Alternating Current (AC)/Transmission Lines/Standing Waves and Resonance. Chapter 14 Transmission Lines
This article is very good and the illustrated waveforms demonstrate the effect of reflection very well but perhaps I have misunderstood the terminology used in this article. I am a bit confused about the impact of open circuit and short circuit conditions at the end of the transmission line. That is, the info in this article seems to differ from other reference sources.
The 2nd para says "The following illustration shows how a triangle-shaped incident waveform turns into a mirror-image reflection upon reaching the line’s unterminated end."
For unterminated I have understood this to mean open circuit which I thought does not produce a mirror image reflection wave, which I have interpreted to mean inverted, but an erect reflection wave which algebraically adds to the incident wave as they each travel in opposite directions. So for the waveforms illustrated in this article where the blue reflected wave is shown inverted relative to the green incident wave, is that illustration actually showing the status for a short circuit at the end of the transmission line? The illustrations also say unterminated line but should it read short circuited line for these illustrations?
I will be grateful if any expert on this topic could clarify this for me please. Thanks
I am learning about Transmission Lines and have been reading the article Google found on the All About Circuits website, Home/Textbooks/Vol II Alternating Current (AC)/Transmission Lines/Standing Waves and Resonance. Chapter 14 Transmission Lines
This article is very good and the illustrated waveforms demonstrate the effect of reflection very well but perhaps I have misunderstood the terminology used in this article. I am a bit confused about the impact of open circuit and short circuit conditions at the end of the transmission line. That is, the info in this article seems to differ from other reference sources.
The 2nd para says "The following illustration shows how a triangle-shaped incident waveform turns into a mirror-image reflection upon reaching the line’s unterminated end."
For unterminated I have understood this to mean open circuit which I thought does not produce a mirror image reflection wave, which I have interpreted to mean inverted, but an erect reflection wave which algebraically adds to the incident wave as they each travel in opposite directions. So for the waveforms illustrated in this article where the blue reflected wave is shown inverted relative to the green incident wave, is that illustration actually showing the status for a short circuit at the end of the transmission line? The illustrations also say unterminated line but should it read short circuited line for these illustrations?
I will be grateful if any expert on this topic could clarify this for me please. Thanks