Space-based focused microwave radiative wireless power transfer (WPT) applications are discussed in depth in this article. Critical requirements, focusing considerations and components considerations are overviewed beginning with a discussion on radiative WPT and Gaussian beam approximation as a theoretical basis to model the antenna Fresnel zone. Bean launchers such as corrugated horns and time modulated arrays (TMAs) are examined. Focusing techniques to reduce spillover at each point of the system insures the beam radius is smaller than the component. Transparent antennas can be manufactured from transparent conductive oxides or metal meshes. MOSFET Schottky diodes in are capable of high power rectification, but with some complications, and GaN Schottky didoes are ultimately envisioned for these systems.