Muhammad Mohsin, design and numerical validation of a compact 50 W linear generator intended for integration with a 30 W-class radioisotope Stirling converter, targeting high-reliability power systems for space and remote applications. Conducted by Muhammad Mohsin, Dae-Jin Kim, and Kyuho Sim, the work scales down a proven 1 kW reference model to achieve high efficiency while maintaining a reduced form factor suitable for constrained environments. Electromagnetic and system-level simulations were carried out using ANSYS Maxwell and SAGE software to optimize key parameters such as magnetic circuit geometry, winding configuration, air-gap dimensions, and operating frequency. The proposed design achieves a stable electrical output of 50 W with approximately 90% conversion efficiency, demonstrating effective electromagnetic coupling and minimized losses. The finalized generator exhibits a compact overall size of 96 mm, making it well suited for applications where mass, volume, and long-term operational stability are critical. Simulation results confirm reliable performance under expected operating conditions and validate the feasibility of integrating the generator with low-power Stirling engines. The study provides valuable design guidelines for scaling linear alternators to lower power levels without compromising efficiency, and it contributes to the advancement of compact energy conversion technologies for robotics, radioisotope power systems, and future space exploration missions.