Abstract
A perforated metallic screen is intentionally engineered by inserting a chain of metallic bars (MBs) inside a square hole. The transmission through this subwavelength hole is significantly enhanced and the values of its peaks still maintain a high level with an increase in screen thickness. By examining the induced surface currents and charge distributions, we show that the high transmission is attributed to the hybridization of the magnetic dipoles that are excited between the MBs and the antithetic metallic surfaces. The proposed structures may have applications in long-distance energy transport and frequency combs, and may open up new perspectives in the engineering of enhanced transmission phenomena.
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