29.1 A 0.42THz 9.2dBm 64-Pixel Source-Array SoC with Spatial Modulation Diversity for Computational Terahertz Imaging

Computational THz Imaging (CTI) is the process of indirectly forming images using algorithms that rely on a significant amount of computing. Unlike focal-plane arrays (FPAs), a single-pixel camera (SPC) uses spatially patterned illumination in conjunction with CTI to measure the entire image using only one receiver [1]. CTI can overcome existing SNR limitations in THz imaging systems as it relaxes the implementation issues of high-power sources and low-noise FPAs (Fig. 29.1.1). However, measurements must be taken in series rather than all at once, which calls for fast THz system-on-a-chip (SoC) implementations in advanced silicon technologies.