- #1
Wannabeagenius
- 91
- 0
Hi All,
I understand that if you have a lossless transmission line and a lossless antenna and there is a mismatch at the antenna/transmission line junction, no energy is lost. If the transmitter is delivering 100 watts into the line, 100 watts will be radiated from the antenna.
I'm wrestling with this concept and getting nowhere because it seems impossible. How is the energy in the rearward moving wave rereflected 100%
I've been told that the impedance of the transmitter is matched to that of the transmission line by the transmitter having an impedance that is the complex conjugate of that of the transmission line. But, as I see it, this only means that power from the transmitter to the transmission line is smoothly transferred with no reflections. This doesn't address the wave reflected back from the antenna.
I'm thinking that the rearward wave gets completely absorbed by the transmitter and the transmitter increases its power in order to compensate! I'm thinking complete absorption because the impedance is perfectly matched from the transmission line into the transmitter.
As you can see, I'm guessing like wild! Please explain how this is done.
Thank you,
Bob
I understand that if you have a lossless transmission line and a lossless antenna and there is a mismatch at the antenna/transmission line junction, no energy is lost. If the transmitter is delivering 100 watts into the line, 100 watts will be radiated from the antenna.
I'm wrestling with this concept and getting nowhere because it seems impossible. How is the energy in the rearward moving wave rereflected 100%
I've been told that the impedance of the transmitter is matched to that of the transmission line by the transmitter having an impedance that is the complex conjugate of that of the transmission line. But, as I see it, this only means that power from the transmitter to the transmission line is smoothly transferred with no reflections. This doesn't address the wave reflected back from the antenna.
I'm thinking that the rearward wave gets completely absorbed by the transmitter and the transmitter increases its power in order to compensate! I'm thinking complete absorption because the impedance is perfectly matched from the transmission line into the transmitter.
As you can see, I'm guessing like wild! Please explain how this is done.
Thank you,
Bob