Results 141 to 150 of about 893,200 (184)

Design guidelines for terahertz mixers and detectors

IEEE Transactions on Microwave Theory and Techniques, 2005
Twin-slot antennas and coplanar waveguides are a popular choice for coupling signals to state-of-the-art mixers and detectors at terahertz frequencies. Although these sensors show promising performance in terms of noise temperature, they usually also show a considerable downward shift in the center frequency of their spectral response, especially when ...
Focardi, P., McGrath, W.R., Neto, A.
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Solid State Rectifier as Terahertz Detector

2018 AEIT International Annual Conference, 2018
We present a new solid state rectifier, compatible with CMOS integrated circuit, suitable to direct conversion of terahertz radiation, at room temperature. The structure creates a rectenna, consists in a truncated conical helix extruded from a planar spiral and connected to a nanometric metallic whisker at one of its edges. The whisker reaches the gate
Massaioli S., Rao R., Palma F.
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TCAD Simulation for Nonresonant Terahertz Detector Based on Double-Channel GaN/AlGaN High-Electron-Mobility Transistor

IEEE Transactions on Electron Devices, 2018
We propose a nonresonant terahertz (THz) detector based on double-channel (DC) GaN/AlGaN high-electron-mobility transistor (HEMT) utilizing a technology computer-aided design platform. The hydrodynamic model is simplified as the drift-diffusion model for
Qingzhi Meng, Qijing Lin, W. Jing, Feng Han, Man Zhao, Zhuangde Jiang   +5 more
semanticscholar   +1 more source

SILICON FINFETS AS DETECTORS OF TERAHERTZ AND SUB-TERAHERTZ RADIATION

International Journal of High Speed Electronics and Systems, 2011
We report on terahertz detection (from 0.2 THz to 2.4 THz) by Si FinFETs of different widths (with 2, 20, and 200 fins connected in parallel). FinFETs (with a small number of fins and with feature sizes as short as 20 nm to 40 nm) showed a very high responsivity (far above that previously measured for standard CMOS).
W. STILLMAN, C. DONAIS, S. RUMYANTSEV, M. SHUR, D. VEKSLER, C. HOBBS, C. SMITH, G. BERSUKER, W. TAYLOR, R. JAMMY   +9 more
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A review of terahertz detectors

Journal of Physics D: Applied Physics, 2019
Physics is the interplay of energy and matter. Energy, in the form of light, interacting with matter, principally in the solid state, underpins this topical review. The subject is developed carefully and methodically, beginning with basic definitions pertaining to terahertz detectors and terahertz radiation, then proceeding systematically to delineate ...
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An HTS detector for terahertz imaging

SPIE Proceedings, 2008
ABSTRACT This paper describes the design, implementation and measurements of a detector for imaging purposes at terahertz frequencies. The detector comprises of a ring slot antenna coupled to a high temperature superconducting Josephson Junction device. The detector was shown to respond to an incident field at 0.6 THz. An imaging system was constructed
Andrew D. Hellicar, Jia Du, Stephen Hanham, Nasiha Nikolic   +3 more
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Superconducting detectors for terahertz imaging

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015
Superconducting niobium nitride (NbN) hot electron bolometer (HEB) detectors consist of a complementary logarithmic-spiral antenna made of gold and an NbN film (bridge) connecting across the antenna's inner terminals have been fabricated and characterized.
S. L. Jiang, X. Q. Jia, B. B. Jin, L. Kang, W. W. Xu, J. Chen, P. H. Wu   +6 more
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A terahertz plasmon cavity detector

Applied Physics Letters, 2010
Sensitivity of a plasmonic detector is enhanced by integrating a broadband log-periodic antenna with a two-dimensional plasma cavity that is defined by source, drain, and multiple gates of a GaAs/AlGaAs high electron mobility transistor. Both narrow-band terahertz detection and a rich harmonic spectrum are evident.
G. C. Dyer, N. Q. Vinh, S. J. Allen, G. R. Aizin, J. Mikalopas, J. L. Reno, E. A. Shaner   +6 more
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Plasmonic terahertz detectors/spectrometers

35th International Conference on Infrared, Millimeter, and Terahertz Waves, 2010
A miniature high speed tera- and gigahertz electromagnetic radiation detector/spectrometer has been created. The operation principle is based on the excitation of distinct sets of plasma modes in the two-dimensional electron system (2DES) of semiconductor AlGaAs/GaAs heterostructure with embedded nonlinear defect.
V. Muravev, I. Kukushkin
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Heterojunction detectors for terahertz applications

SPIE Proceedings, 2005
Terahertz imaging is finding a wide range of interest in biology, communications, environment, medicine, security, and space applications. Here results are presented on heterojunction based terahertz detectors covering the range from 1-60 THz.
openaire   +1 more source