Title :
Phase-Noise Measurement System for the Terahertz-Band
Author :
DeSalvo, J.A. ; Hati, A. ; Nelson, C. ; Howe, D.A.
Author_Institution :
Time & Freq. Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We present phase-noise measurements in support of terahertz electronics. By combining even-harmonic mixers with a 2.5 GHz frequency comb, we achieve a phase-noise measurement system in waveguide (WR1.5) by use of cross-spectral and digital phase-noise measurement techniques. At 670 GHz an upper bound of this system´s noise floor is found to be -20, -40, and -60 dBc/Hz at 1, 100, and 10000 Hz offsets, respectively. In addition, a commercial, low-phase-noise, 670 GHz source is measured at offset frequencies from 0.1 Hz to 1 MHz.
Keywords :
millimetre wave mixers; phase noise; digital phase-noise measurement techniques; even-harmonic mixers; frequency 0.1 Hz to 1 MHz; frequency 2.5 GHz; frequency 670 GHz; frequency comb; low-phase-noise; phase-noise measurement system; terahertz electronics; terahertz-band; Frequency control; Metrology; Mixers; Noise measurement; Phase noise; Submillimeter wave measurements; Frequency control; harmonic mixers; metrology; phase noise; submillimeter wave measurements;
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2012.2222295
