Mazulu. First of all you are going to be using that metal square as an antenna. I guess you can call it whatever you want. But you seem to want to use it as an antenna.
When you work with RF signals, impedance matching is very important. I assume that you use some kind of transmission line (coax cable) to get the signal to the metal square. Because your metal square is just a metal square, it is not impedance matched. The signal is going to reflect back into the output of your amplifier. You should look up VSWR. At some frequencies the end of the transmission line will look like an open, and at some frequencies it will look like a direct short to ground. Depending on your amplifier and how much power is involved, it could either just make you're experiment not work, or it could burn up the output circuit of your amplifier. Many a transmitter has been blown up because the operator transmitted with no load on the output. This is pretty basic electronics. Are you sure you have competence in that subject? I suspect that you are going to have a very difficult time with your experiment.
Study transmission lines and get a book on HAM radio and read it. I don't do RF so I am not very knowledgeable on the subject. But I do know enough that you don't just hook a metal square up to a power amplifier. I have seen some burnt circuits from amplifiers.
But just ignore me. You are the expert electronics technician and world class physicist.
When you work with RF signals, impedance matching is very important. I assume that you use some kind of transmission line (coax cable) to get the signal to the metal square. Because your metal square is just a metal square, it is not impedance matched. The signal is going to reflect back into the output of your amplifier. You should look up VSWR. At some frequencies the end of the transmission line will look like an open, and at some frequencies it will look like a direct short to ground. Depending on your amplifier and how much power is involved, it could either just make you're experiment not work, or it could burn up the output circuit of your amplifier. Many a transmitter has been blown up because the operator transmitted with no load on the output. This is pretty basic electronics. Are you sure you have competence in that subject? I suspect that you are going to have a very difficult time with your experiment.
Study transmission lines and get a book on HAM radio and read it. I don't do RF so I am not very knowledgeable on the subject. But I do know enough that you don't just hook a metal square up to a power amplifier. I have seen some burnt circuits from amplifiers.
But just ignore me. You are the expert electronics technician and world class physicist.