alexmars
Newbie
Hello! I am new to Ansys, but I am trying to simulate a quarterwave resonator. I am attaching below a screenshot of the setup. It's pretty simple, I inject radiation through the small port on the left (which is at the same level as the end of the inner resonator rod) and I want to measure the S11 signal and from there get the resonant frequency of the system. However, the length of the inner resonator is 70 cm, which should correspond to a resonant frequency of 107 MHz. However, from S11 plot (see attached), the resonant frequency seems to be 2.5 GHz. I don't expect the frequency to be exactly 107 MHz, but I don't understand why it is so far from the desired value. Am I missing something?
