Bridge Equivalent Circuits for Microwave Filters and Fano Resonance

Modified Split-Ring Resonator with Electromagnetically Induced Transparency

“…In sufficiently strongly connected oscillatory contours at two closes but not coinciding frequencies (when degeneracy is absent), there are two so-called normal oscillations -inphase and anti-phase [4]. The influence of an external harmonic signal on in-phase or antiphase oscillation leads to EIT-type effects (or Fano resonance) if it is the interference of a different type of oscillation (in-phase-anti-phase), or to the interference of the Autler-Townes Splitting (ATS) type [5] if it is interference one type oscillating.…”