Phase-Noise Measurement System for the Terahertz-Band
Jason A. DeSalvo, Archita Hati, Craig W. Nelson, David A. Howe
We present initial phase noise measurements in support of terahertz electronics, in the frequency range generally regarded as 0.1 to 10 THz. Using digital phase noise measurement techniques and an even-harmonic mixer, we achieve a phase noise measurement system in waveguide (WR1.5). At 670 GHz an upper bound of this systems noise floor is found to be -20, -40, and -60 dBc/Hz at 1, 100, and 10000 Hz offsets, respectively. In addition a low phase noise 670 GHz source is measured at offset frequencies from 0.1 Hz to 1 MHz.
IEEE Transactions on Terahertz Science and Technology
frequency control, harmonic mixers, metrology, phase noise, submillimeter wave measurements