- #1
squalho
- 11
- 0
Hello,
This is my problem: I have a network analyzer, that is capable of measuring the S-parameters of a 2 ports network. Let's say that I connect antenna #1 (a standard half-wavelength dipole) to port #1 of the NA, and antenna #2 (same type of dipole) to port #2 of the network analyzer. Cinsidering only 1, fixed frequency, S11 tells me about the reflection coefficient of antenna #1 and S22 the same for antenna #2. S21 (or S12, they should be the same) would give me an idea of how much power goes from port 1 to port 2 (or viceversa) for that specific frequency, i.e. it should allow me to measure the electric field received by antenna #2, in both magnitude and phase.
I know that S21 is somewhat proportional to the electric field, because its magnitude decreases as I go farther, and its phase changes with the position too, showing 360 degrees changes for every wavelength of distance between the antennas.
So my question is: given S21, in both magnitude and phase, how can I find E, magnitude and phase?
Any suggestion is greatly appreciated!
This is my problem: I have a network analyzer, that is capable of measuring the S-parameters of a 2 ports network. Let's say that I connect antenna #1 (a standard half-wavelength dipole) to port #1 of the NA, and antenna #2 (same type of dipole) to port #2 of the network analyzer. Cinsidering only 1, fixed frequency, S11 tells me about the reflection coefficient of antenna #1 and S22 the same for antenna #2. S21 (or S12, they should be the same) would give me an idea of how much power goes from port 1 to port 2 (or viceversa) for that specific frequency, i.e. it should allow me to measure the electric field received by antenna #2, in both magnitude and phase.
I know that S21 is somewhat proportional to the electric field, because its magnitude decreases as I go farther, and its phase changes with the position too, showing 360 degrees changes for every wavelength of distance between the antennas.
So my question is: given S21, in both magnitude and phase, how can I find E, magnitude and phase?
Any suggestion is greatly appreciated!