Traveling wave based THz signal generation system and method thereof

摘要

TeraHertz signal generation system based on traveling-wave oscillators providing extraction of orders of magnitude higher oscillation frequencies resulting in frequency multipliers and THz transceivers that can generate, transmit and sense THz frequency signals for sensing/imaging.

主权项

1. A Traveling-Wave Frequency-Shift Reflectometer [TWFSR] capable of generating THz signals comprising
a pair of symmetrical Traveling-Wave Frequency Multipliers [TWFM]s as signal sources further comprising two or more independent electrical conductors forming transmission line loops of a differential medium for traveling wave oscillations; a plurality of cross-coupled inverting amplifiers distributed along said transmission line loops; a plurality of shorted transmission line stubs to provide biasing said cross-coupled amplifiers; a plurality of resistors in series with said transmission line stubs to eliminate low-frequency mode of oscillation; a plurality of varactors to provide tuning for high frequency, and a plurality of symmetric tapping points to tap a plurality of corresponding symmetric phases to affect higher order harmonic frequency extraction to yield high-bandwidth oscillations in the range of at least from about sub-GHz to above THz; a coupling for direct coupling said pair of [TWFM]s; and at least a pair of symmetrical supporting back-end devices that form a pair of symmetrical transceivers for simultaneous transmission and reception of THz level signals.