Compact Multi-Beam Antenna for Satellites & Aircraft

Satellites and aircraft in motion require continuous coverage as their orientation changes relative to ground. Conventional phased array antennas are inherently directional, requiring multiple systems to cover different angles. This increases weight and volume. Current solutions are bulky and limited to opposing transmitters and receivers directly facing the array. Existing multi-beam systems compromise on compactness, thermal performance and/or angular coverage.

This invention introduces a modular stacking architecture where multiple antenna module types are arranged with transmission surfaces facing different directions of the base. By integrating Rotman lens beamforming networks and hollow waveguide-arrays within each module, the system achieves wide-angle beam coverage in a compact design. The modular approach allows scaling from two to multiple module types, covering additional directions. Active phase control between modules enables sectioning into multiple independent beams—all with no moving parts and a high mechanical and thermal robustness.