On-Chip THz Spectroscopy System

The research report presents the chip-scale solutions for THz spectroscopy applications. On the transmitter side, the architecture achieves dynamic waveform shaping of THz periodic waveform in free space by allowing interference of radiated electromagnetic-fields with rich harmonic components and proper delays at far field. On the receiver side, the electromagnetic interface between the on-chip receiver and the incoming THz wave creates an opportunity to perform spectral analysis of incident signal, without requirement of traditional down-conversion architecture where requirement of a large bank of frequency synthesizers is necessary. The electromagnetic scattering of the incident signal onto the on-chip radiator contains information about the incident spectrum. The research report includes implementation of the proposed architectures for both transmitter and receiver, as well as the measurement results.