A Compact Broadband and High-Gain Metasurface Antenna Loaded with Meander-Line

In this letter, we propose a compact broadband and high-gain metasurface antenna (MSA) loaded with meander-line, which is made up of 3 x 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% (|S-11 | <-10 dB) with the boresight peak gain of 9.2 dBi is achieved, while the radiation aperture is only 0.46 lambda(0) x 0.46 lambda(0), which presents a good performance. A prototype of this MSA is manufactured and tested, the tested results correlated reasonably with the simulated ones. key words: Broadband, compact, high-gain, inductive-loaded metasurface antenna (MSA), meander-line, metasurface antenna