Article ID: 16.20190269
This paper presents the resonance transmission of a small, square aperture with two parallel wires in a ground plane. When a plane wave excites a square aperture, aperture resonance occurs using parallel wires, which is known as resonance transmission or maximum power transmission. The resonant frequency of a 3-cm square aperture structure was reduced from 4.18 GHz to various desired frequencies by adding wires. The enhanced transmission cross sections using two parallel wires were ≈3λ2/4π (= 2Gλ2/4π, G = 1.5) for square widths of ≲0.22λ, and approached 3.56λ2/4π (= 2Gλ2/4π, G = 1.78) for square widths ≳0.22λ. The small square aperture enhanced transmission cross sections using parallel wires were between 3λ2/4π and 3.56λ2/4π.