PROJECT TITLE :

Active Spherical Phased Array Design for Satellite Payload Data Transmission

ABSTRACT:

Spherical phased array antennas (SPAAs) are of particular interest for transmission of payload data of low earth orbiting (LEO) satellites to the bottom stations. They will be designed to scan large half of the radiation sphere with constant directivity. This helps in designing highly agile spacecrafts. During this paper, sensible design aspects of spherical arrays for achieving an optimum configuration to satisfy a specified goal are discussed. The new concept of sharing the hardware among the radiating components and the results of the failure of few of them are also studied well. Measured results of 2 arrays with completely totally different configurations but providing virtually similar performance are mentioned corroborating the planning concept.