A compact broadband and high-gain metasurface antenna loaded with meander-line

Abstract

In this letter, we propose a compact broadband and high-gain metasurface antenna (MSA) loaded with meander-line, which is made up of 3×3 square patches and two rows of meander-line. The meander-line is printed underneath the side radiating gap of the square patches, aiming to enforce the inter-element equivalent inductance for reducing the radiation aperture and increasing the BW of the MSA, simultaneously. A large bandwidth of 40% (|S₁₁|<-10dB) with the boresight peak gain of 9.2dBi is achieved, while the radiation aperture is only 0.46λ₀×0.46λ₀, which presents a good performance. The prototype of this MSA is manufactured and tested, the tested results correlated reasonably with the simulated ones.