My understanding is it acts like a capacitor and inductor in a loop. The capacitor releases stored energy which is absorbed by the inductor through a magnetic field which then returns it to the capacitor, leading to a resonation. This resonation produces an EM wave.
1) How does resonation between electric and magnetic fields produce EM waves?
2) How does the control of the dimensions of the device control the frequency of the wave?
3) What is the mathematical relationship between the resonance frequency and the EM wave frequency?
4) how does the permitivity and Q-factor relate to the control the resonance?