Skip to main content

Modular Scanning Array based on Simple Antenna Manufacturing



Prime contractor
Organisational Unit
Implementation progress
07 July 2022

Duration: 18 months


MOSAIC aims at improving the technical and commercial maturity of the antenna architectures proposed in the ESA invention [1] which describes a design and manufacturing method for large sparse phased arrays for geostationary orbit satellite. Sparse arrays offer power consumption reduction through a not regular lattice, at the cost of increasing the complexity of the BFN as well as a not complete filling of the available aperture. The main idea of MOSAIC consists in adopting a modular structure, based in subarray, to simplify the antenna architecture and the manufacturing. In particular, the elements of the array are grouped into square tiles of different sizes (2 or 3 at the maximum). This choice makes the whole array architecture more regular as compared to the one considered in [1] since the antenna phase centers may be located in a regular lattice, thus will lead to the design and implementation of a simplified BFN. Moreover, the square tiles allow a complete filling of the aperture, maximizing the aperture efficiency. In order to further reduce the manufacturing costs and increase the antenna robustness, each tile will be controlled by a single isophoric amplifier and a simplified phase tapering to possibly shape the subarray radiation pattern. Exploiting the invention, the single antenna elements will be co-designed with the sub-array layout in order to optimize the shapes of the subarrays patterns with the aim of reducing the scan loss. Regarding the elementary radiator, a full-metal antenna element is envisaged. The activity includes the manufacturing and test of one or more subarray breadboards to validate the proposed low-cost solution. The targeted mission is considers the micro-GEOstationary satellite that SWISSto12 is developing with the support of ESA. The consortium believes that the original invention, and hence this activity, have the potential to enable a competitive use of phased arrays in platforms whose DC capabilities are limited.

Contract number
OSIP Idea Id
Related OSIP Campaign
New Ideas for the Commercial Use of ESA's Inventions
Main application area
Modular Scanning Array based on Simple Antenna Manufacturing New Ideas for the Commercial Use of ESA's Inventions