Decoupling of Two Closely Located Dipole Antennas by a Split‐Loop Resonator

In this paper, we theoretically and experimentally prove the possibility of the passive electromagnetic decoupling for two parallel resonant dipoles by a split‐loop resonator having the resonance band overlapping with that of the active dipoles. We show that the replacement of the decoupling dipole suggested in the literature as a tool for decoupling of two closely located dipole antennas by our split‐loop resonator results in the twofold enlargement of the operation band. Key Points Two very closely resonant dipole antennas are decoupled Ultrahigh field MRI is the main application Mutual impedance between dipole antenna and Split-Loop Resonator is derived