Terahertz waves, which occupy the band from 0.1 mm to 1 mm, are unique in the spectrum because of their potential applications in secure communications, automotive radar, spectroscopy and medical imaging. Despite the interest in using terahertz waves, we currently lack the underlying hardware platform to build upon. Currently, the only way to sample a picosecond signal is via photoconductive detection with a femtosecond laser and a PCA (photo-conductive antenna). Such systems require an expensive laser, sensitive optical alignment, and a mechanical delay line to scan the sampling time, thus limiting the beneficiaries to a limited number of research laboratories and universities. My research investigates and builds next generation of THz receivers and samplers with few picosecond sampling window based on the integrated circuit technology. The goal is to implement laser-free, fully electronic samplers to sub-sample Terahertz signal.