A pixel-based reconfigurable antenna (PRA) design is proposed for Fluid Antenna Systems (FAS) to meet the requirements of high-speed reconfiguration and spatial correlation. The PRA consists of an E-slot patch antenna and an upper reconfigurable pixel layer with 6 RF switches, enabling 12 FAS ports across 1/2 wavelength. Simulation and experimental results at 2.5 GHz demonstrate that the design achieves the required port correlation with matched impedance. The PRA-FAS design uses a two-step method to optimize the configuration of the pixel layer, ensuring the spatial correlation between FAS ports. The design leverages electronic switching (e.g., PIN diodes) to achieve microsecond-level reconfigurability, surpassing the limitations of mechanical-based designs. The PRA-FAS prototype, operating at 2.5 GHz, shows a simulated bandwidth of over 50 MHz and a minimum average relative error of 0.063 in the covariance matrix, demonstrating high precision. Experimental results confirm the design's performance, with all 12 states achieving gains above 6.6 dBi and an average efficiency of 80%. The PRA-FAS is capable of providing high-speed reconfiguration and spatial correlation, making it suitable for advanced wireless communication systems.A pixel-based reconfigurable antenna (PRA) design is proposed for Fluid Antenna Systems (FAS) to meet the requirements of high-speed reconfiguration and spatial correlation. The PRA consists of an E-slot patch antenna and an upper reconfigurable pixel layer with 6 RF switches, enabling 12 FAS ports across 1/2 wavelength. Simulation and experimental results at 2.5 GHz demonstrate that the design achieves the required port correlation with matched impedance. The PRA-FAS design uses a two-step method to optimize the configuration of the pixel layer, ensuring the spatial correlation between FAS ports. The design leverages electronic switching (e.g., PIN diodes) to achieve microsecond-level reconfigurability, surpassing the limitations of mechanical-based designs. The PRA-FAS prototype, operating at 2.5 GHz, shows a simulated bandwidth of over 50 MHz and a minimum average relative error of 0.063 in the covariance matrix, demonstrating high precision. Experimental results confirm the design's performance, with all 12 states achieving gains above 6.6 dBi and an average efficiency of 80%. The PRA-FAS is capable of providing high-speed reconfiguration and spatial correlation, making it suitable for advanced wireless communication systems.