- #1
better361
- 24
- 1
Hey guys, I am currently self studying some microwave engineering through Pozar's textbook, and I have a couple of conceptual questions.
1.What is the point of defining a generalized reflection coefficient [tex]\tau(0) e^{-2j\beta l}[/tex] if real reflections happen at boundaries?
2. Is there an analog to shunt conductance in basic circuit theory?
3. What exactly does it mean that we have small conductor and dielectric losses?
4. Pozar says that because the generator and load are mismatched, reflections will occur at that boundary also. But later he says the voltage on the line is just: [tex] (V_o)^{+}(e^{j\beta l}+\tau_l e^{-j\beta l}) [/tex], which seems to imply the voltage is only due to initial wave and one reflected wave, which is at the load.
5. How do I tell if a line is lossless or not, without being given transmission line parameters?(Here is an example from the book: A radio transmitter is connected to an antenna having an impedance 80+j 40 ohms with a 50 ohms coaxial cable...)
1.What is the point of defining a generalized reflection coefficient [tex]\tau(0) e^{-2j\beta l}[/tex] if real reflections happen at boundaries?
2. Is there an analog to shunt conductance in basic circuit theory?
3. What exactly does it mean that we have small conductor and dielectric losses?
4. Pozar says that because the generator and load are mismatched, reflections will occur at that boundary also. But later he says the voltage on the line is just: [tex] (V_o)^{+}(e^{j\beta l}+\tau_l e^{-j\beta l}) [/tex], which seems to imply the voltage is only due to initial wave and one reflected wave, which is at the load.
5. How do I tell if a line is lossless or not, without being given transmission line parameters?(Here is an example from the book: A radio transmitter is connected to an antenna having an impedance 80+j 40 ohms with a 50 ohms coaxial cable...)