<p>This paper introduces the design, fabrication, and characterization of a compact non-uniform metasurface antenna (MSA) for enhanced performance in Ku-band applications. The antenna features a dual-layer substrate with a sandwiched ground layerin betweenandfed by utilizing a microstrip line at the bottom. By employing a non-uniform distribution of circular patches on the upper substrate, the design achieves optimized gain and sidelobe levels across the 12.5–14.5 GHz frequency range. The fabricated prototype demonstrates a 55% resonance bandwidth (|S₁₁|&lt; − 10 dB), a peak gain of 11 dBi, and a sidelobe level (SLL) of approximately − 16.5 dB. Compared to existing MSA designs, the proposed antenna offers a superior compromise between compact size (2λ × 2λ, × 0.1λ), high gain, and wide operational bandwidth. Given its low profile and high performance, MSA is a viable alternative to traditional antennas for modern technologies in the Ku-band, including satellite communications, mobile systems, and terrestrial services.</p>