3D Terahertz Antenna Measurement: A comparison between solid-state electronics and photomixing approaches

The terahertz (THz) spectrum (0.1–10 THz) is located between the infrared and microwave regimes, known as the
THz gap
. During the last decade, THz wave generation, detection, and manipulation (three key THz research directions) have been significantly advanced, taking advantage of the rapid development of solid-state circuits and photonics technologies.