A generalized equivalent circuit model was developed for both single-tuned and double-tuned radio-frequency(RF) coils for Magnetic Resonance Imaging (MRI) systems.

Again, like the radio, when you really get tuned very precisely onto the frequency, the static goes away and you can hear subtleties in the signal that you couldn't hear before.

In one exemplary embodiment, the multi-band antenna system 100 is tuned to operate within two general radio frequency ranges which are generally referred to as a low band and a high band.