This paper presents a fully monolithic approach to the design and fabrication of THz CMOS image sensor operating at 28.3 THz using the mass-producible 0.18-μm 1P6M CMOS foundry. The CMOS sensor consists of antenna-coupled transducer, linearly transforming the intercepted THz (terahertz) electromagnetic energy into voltage representation in the region of interest. The THz image sensor adopts PTAT (...Show More