Multi-dimensional real-time spectrum analysis for high-resolution signal processing

Two types of RTSAs are presented, which spectrally decompose a broadband electromagnetic signal in space in real-time. The first system is based on an array of LWA fed using an array of phasers, where the dispersion of the phasers in conjunction with the natural frequency scanning of the leaky-wave antenna enable the 2-D frequency scan. The second system is a purely spatial system based on dispersive metasurface which operate on a incident wave and performs 2-D spectral decomposition. Their principle and basic characteristics are discussed in details.