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Title: Characterization of near-terahertz complementary metal-oxide semiconductor circuits using a Fourier-transform interferometer

Optical methods for measuring of the emission spectra of oscillator circuits operating in the 400-600 GHz range are described. The emitted power from patch antennas included in the circuits is measured by placing the circuit in the source chamber of a Fourier-transform interferometric spectrometer. The results show that this optical technique is useful for measuring circuits pushing the frontier in operating frequency. The technique also allows the characterization of the circuit by measuring the power radiated in the fundamental and in the harmonics. This capability is useful for oscillator architectures designed to cancel the fundamental and use higher harmonics. The radiated power was measured using two techniques: direct measurement of the power by placing the device in front of a bolometer of known responsivity, and by comparison to the estimated power from blackbody sources. The latter technique showed that these circuits have higher emission than blackbody sources at the operating frequencies, and, therefore, offer potential spectroscopy applications.
 [1] ;  [2] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Univ. of North Florida, Jacksonville, FL (United States)
  2. Univ. of Florida, Gainesville, FL (United States)
  3. Univ. of Florida, Gainesville, FL (United States); Texas Instruments, Dallas, TX (United States)
  4. Univ. of Texas, Dallas, TX (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 82; Journal Issue: 10; Journal ID: ISSN 0034-6748
American Institute of Physics (AIP)
Research Org:
Univ. of North Florida, Jacksonville, FL (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF)
Country of Publication:
United States
OSTI Identifier: