Interaction between isolated resonators in near field channel

Near field channel is fundamentally different from conventional far field channel. Instead of using electromagnetic wave propagation, magnetically coupled resonance is utilized in near field. In order to apply this resonance phenomenon to communication system, Resonance Isolation (RI) system was recently proposed. In the RI system, a resonator stored with initial energy is mutually coupled with another resonator in near field, alternately exchanging its energy with the resonator. We establish two corresponding communication channel models using circuit theory and coupled mode theory, considering three classical network scenarios: two resonators (peer-to-peer), three resonators (equilateral), and three resonators (relay). We analyze the channel models for each scenario by both models and compare the performance with numerical results. We found significant relaying gain in the relaying scenario, and we defined this scenario as the Resonate and Forward technique.