A Novel Integrated RESM-CESM Antenna for Naval Platforms

Modern trend in Electronic Support Measurement (ESM) Systems calls for cooperation of Communication ESM (C-ESM) and Radar ESM (R-ESM) systems to completely cover the electromagnetic environment for reasons of surveillance, reconnaissance and improved mission effectiveness. With the ever challenging physical constraints of multirole platforms, design of C-ESM and R-ESM as separate systems is no longer suitable and therefore integrated architectures shall be pursued for best fitting the installation with the required performances. This paper presents a novel system architecture that allows the coexistence of C-ESM and R-ESM antennas sharing the same volume and minimizing electro-magnetic coupling. The system has been designed in order to reduce undesired scattering of radiating elements, optimize the position of all sensors on a single mast and then significantly limit the overall radar cross section (RCS) of the structure (stealthiness requirement is fundamental in this context). For this purpose, unconventional electro-magnetic and thermo-mechanical solutions has been adopted, in terms of radiating architecture as well as innovative materials. The proposed integrated antenna is suitable for naval multi-platform installations: patrol vessels, submarines and frigates by using modular approach. The main advantage of this approach is that the system could be adapted to the application of interest, therefore R-ESM, C-ESM and R-ESM/C-ESM configurations are available. In conclusion, the proposed R- ESM/C-ESM antenna allows to reduce weight and size of the system, with state of the art electromagnetic performances.