Challenges in THz Technology: Applications, Receivers and Antenna Testing

THz technology is mainly motivated by need of understanding of atmospheric phenomena such as the "ozone hole" and "green house effect" on one hand, and by that of astrophysical phenomena such as formation and evolution of stars and planetary systems on the other hand. These phenomena can be experimentally investigated using various instruments operating at submillimeter wavelengths. The instrument may be ground-based, airbome or spaceborne. In this paper both the motivation and challenges of THz technology are briefly introduced and reviewed.