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Low loss multifunction building block panel for S-band radar

The purpose of this paper is to present a low loss multifunction building block panel. It's composed of an array of radiating elements which is working in 500 MHz frequency bandwidth in S-band. The calibration, filtering and routing layer functions are integrated into this panel; the structure is optimized for overall low losses. The panel can work in transmission and/or in reception for large scanning angles in azimuth and elevation planes.