The satellite power delivery system is designed around creating a 1km dish of satellites in space. There are 100 satellites per constellation and the satellites are phase locked with each other through the use of a ground based beacon. GPS satellites could also be used as a phase reference source. The link budget below describes the output power required from each satellite.

During the development phase of this project, we found that the standard Friis transmission equation was not ideal for a wireless power transfer application. The reason is that it is easy to make an assumptions which lead to more power received than power transmitted. Instead, we use a solution from reference 1 which gives the power transmission efficiency. The transmit and receive antenna apertures are combined with the wavelength and transmission distance to form a parameter tau. In the Brown paper [1], this parameter is used to look up the overall system transmission efficiency. The figure below shows this efficiency curve as a function of tau.

We use antenna pattern synthesis, similar to the method given in [2], to focus the microwave power over a 200 meter rectenna array.