# IEEE Transactions on Terahertz Science and Technology

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Displaying Results 1 - 25 of 27

Publication Year: 2013, Page(s):C1 - C4
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• ### IEEE Transactions on Terahertz Science and Technology publication information

Publication Year: 2013, Page(s): C2
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• ### Editorial

Publication Year: 2013, Page(s):501 - 504
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• ### TeraHertz pioneers: A series of interviews with significant contributors to teraHertz science and technology

Publication Year: 2013, Page(s): 505
Cited by:  Papers (1)
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• ### Terahertz Pioneer: Fritz Keilmann - "RF Biophysics: From strong field to near field"

Publication Year: 2013, Page(s):506 - 514
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Recounts the life and professional achievements of Fritz Keilmann. Dr. Keilmann has explored many areas and applications in infrared physics and spectroscopy. His interests were always focused in the infrared, but he was often drawn into biochemistry and biophysics, where he initially worked on molecular spectroscopy of biomolecules and later on microwave effects on cell systems. Today, he is focu... View full abstract»

• ### Silicon Micromachined Lens Antenna for THz Integrated Heterodyne Arrays

Publication Year: 2013, Page(s):515 - 523
Cited by:  Papers (20)  |  Patents (1)
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In this paper, we present the design, fabrication, and measurements of a lens THz antenna that can be fabricated using conventional photolithography and deep reactive etching processes. The antenna is composed of an extended hemispherical silicon lens and a leaky wave waveguide feed. Both elements are fabricated using silicon micromachining techniques, enabling the fabrication of future large ante... View full abstract»

• ### Planar Bowtie Nanoarray for THz Energy Detection

Publication Year: 2013, Page(s):524 - 531
Cited by:  Papers (3)  |  Patents (1)
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In this paper, an investigation is presented into nanogap-based bowtie nanoarrays for THz energy detection, with the aim of optimizing their geometrical parameters utilizing finite-element method (FEM) based simulations. The bowtie elements of the array are connected by feeding lines, which are used to transfer the captured electric field away from the antenna's center to a common feeding gap. The... View full abstract»

• ### From Arrays of THz Antennas to Large-Area Emitters

Publication Year: 2013, Page(s):532 - 544
Cited by:  Papers (8)
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Arrays of coherently driven photomixers with antenna (antenna emitter arrays, AEAs) have been evaluated as a possibility to overcome the power limitations of individual conventional photomixers with antenna (“antenna emitters”, AEs) for the generation of continuous-wave (CW) THz radiation. In this paper, “large area emitters” (LAEs) are proposed as an alternative approa... View full abstract»

• ### Modeling Terahertz Plasmonic Si FETs With SPICE

Publication Year: 2013, Page(s):545 - 549
Cited by:  Papers (11)  |  Patents (1)
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As operating frequencies of Si FETs continue to grow, commercial circuit modeling tools must provide accurate simulations at very high frequencies with the ability to model plasmonic FETs in large and complex circuits. Traditional compact SPICE models used by commercial CAD tools model the channel resistance and capacitance and gate resistance as single lumped elements or use approximations to mod... View full abstract»

• ### Deep Sub-Wavelength Multimode Tunable In-Plane Plasmonic Lenses Operating at Terahertz Frequencies

Publication Year: 2013, Page(s):550 - 557
Cited by:  Papers (7)
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We report on focusing of terahertz (THz) plasmons in two-dimensional electron gas (2DEG) at III-N heterostructures and in graphene by using planar circular grating lenses. Propagation of a broadband pulse of EM waves in 0.5-10 THz is studied by using finite difference time-domain (FDTD) approach. The results show that plasmonic modes excited by incident THz radiation are concentrated into λ... View full abstract»

• ### Sensitivity Analysis of TRL Calibration in Waveguide Integrated Membrane Circuits

Publication Year: 2013, Page(s):558 - 565
Cited by:  Papers (5)
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We present a sensitivity analysis on TRL calibrated S-parameter measurements of membrane circuits in the WR-03 waveguide band (220-325 GHz). The impact of waveguide and membrane circuit misalignment, as well as waveguide dimension mismatch is investigated. The analysis is performed for the thru-reflect-line (TRL) calibration applied to E-plane split waveguide blocks carrying membrane circuits. The... View full abstract»

• ### G-Band Micro-Fabricated Frequency-Steered Arrays With 2 $^circ$/GHz Beam Steering

Publication Year: 2013, Page(s):566 - 573
Cited by:  Papers (9)  |  Patents (5)
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In this paper, we describe micro-fabricated frequency-scanned slot waveguide arrays operating between 130 and 180 GHz for planetary landing radar. The group delay dispersion of the feed line is increased by corrugating the bottom rectangular waveguide wall. Both 16-element and 32-element linear arrays are fed by micro-coaxial corporate feed networks to narrow the beam in the non-scanning direction... View full abstract»

• ### A 225 GHz Circular Polarization Waveguide Duplexer Based on a Septum Orthomode Transducer Polarizer

Publication Year: 2013, Page(s):574 - 583
Cited by:  Papers (6)
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In this paper, we present the modeling and experimental validation of an efficient, compact, and high-isolation waveguide duplexer operating at 225 GHz. While duplexers based on ferrite circulators are key components of many monostatic radar systems, at W-band frequencies and above the performance of waveguide circulators rapidly deteriorates. The design presented here uses a ferrite-free duplexin... View full abstract»

• ### Design and Test of a 0.5 THz Dipole Antenna With Integrated Schottky Diode Detector on a High Dielectric Constant Ceramic Electromagnetic Bandgap Substrate

Publication Year: 2013, Page(s):584 - 593
Cited by:  Papers (4)
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This paper presents the first analysis of the input impedance and radiation properties of a dipole antenna, placed on top of Fan 's three-dimensional electromagnetic bandgap (EBG) structure, (Applied Physics Letters, 1994) constructed using a high dielectric constant ceramic. The best position of the dipole on the EBG surface is determined following impedance and radiation pattern analyses. Based ... View full abstract»

• ### Real-Time Imaging With a 140 GHz Inverse Synthetic Aperture Radar

Publication Year: 2013, Page(s):594 - 605
Cited by:  Papers (14)
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A summary of a 140 GHz inverse synthetic aperture radar (ISAR) is presented. High resolution and real time imaging are two key points in the design. Using the frequency-modulated continuous-wave (FMCW) radar technique with a 5 GHz bandwidth, 3 cm range resolution is achieved with assistance of software calibration compensating for nonlinearities of the LFM waveform. In cross-range region, syntheti... View full abstract»

• ### THz 3-D Image Formation Using SAR Techniques: Simulation, Processing and Experimental Results

Publication Year: 2013, Page(s):606 - 616
Cited by:  Papers (14)
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An active frequency-modulated continuous wave (FMCW) terahertz (THz) system has been developed to image objects in millimeter-scale resolution in three dimensions. The two-dimensional (2-D) aperture synthesis enables the improvement of cross range resolution, and its high range resolution is achieved through the use of the broadband sweep signal, whose frequency ranges from 514 to 565 GHz. The 3-D... View full abstract»

• ### Fast 2-D and 3-D Terahertz Imaging With a Quantum-Cascade Laser and a Scanning Mirror

Publication Year: 2013, Page(s):617 - 624
Cited by:  Papers (18)
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A terahertz imaging system based on a quantum-cascade laser (QCL), a fast scanning mirror, and a sensitive Ge:Ga detector is demonstrated. Transmission images are obtained by scanning the beam of the QCL across an object. Images with a diameter of approximately 40 mm and a signal-to-noise ratio of up to 28 dB were obtained within 1.1 s. The system was also used to obtain three-dimensional images o... View full abstract»

• ### Simulation and Data-Processing Framework for Hybrid Synthetic Aperture THz Systems Including THz-Scattering

Publication Year: 2013, Page(s):625 - 634
Cited by:  Papers (4)
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We present a simulation and data-processing framework that incorporates full 3-D configuration, simulation, and reconstruction functionalities for hybrid synthetic aperture THz systems, which combine mechanically scanned real imaging projection (1-D) and synthetic imaging reconstruction (2-D). The simulation is based on a ray-casting approach including models for reflections at rough surfaces and ... View full abstract»

• ### Theoretical Estimations of Safety Thresholds for Terahertz Exposure of Surface Tissues

Publication Year: 2013, Page(s):635 - 640
Cited by:  Papers (5)
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This paper contributes to the topic of radiation safety in the THz band by providing theoretical estimations of the permissible incident power densities over 100 GHz-10 THz. Microthermal absorption has been characterized and a worst-case analysis has been done to provide thresholds for the tissue-internal electric field strength at THz frequencies. Dielectric models for the skin and the cornea of ... View full abstract»

• ### Analysis and Design of a Quasi-Optical Mode Converter for a 1-kW, 550-GHz, ${rm TE}_{15,2}$-Mode Gyrotron

Publication Year: 2013, Page(s):641 - 648
Cited by:  Papers (6)
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A simple method is presented for the analysis and design of gyrotron output couplers based on a Vlasov-type launcher and a single focusing mirror. It is shown that a quasi-analytical solution to the Kirchhoff diffraction integral can be implemented to accurately model the diffraction spreading of the launched radiation with good accuracy relative to an Electric Field Integral Equation simulation. ... View full abstract»

• ### Broadband Terahertz Analysis of Energetic Materials—Influence of Crystal Structure and Additives

Publication Year: 2013, Page(s):649 - 655
Cited by:  Papers (4)
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A detailed broadband analysis of energetic materials using THz time-domain spectroscopy with a bandwidth from 0.2 to 6.4 THz is presented. Dependencies of the resonance features on different sample parameters are evaluated via spectroscopic investigation of several energetic materials (TNT, C4, RDX, PETN, AN) in transmission and reflection experiments. A strong dependency of the resonance features... View full abstract»

• ### A Multiple Angle Method for THz Time-Domain Material Characterization

Publication Year: 2013, Page(s):656 - 665
Cited by:  Papers (8)
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A multiple angle technique for Terahertz (THz) time-domain material characterization is described. In order to extract the properties of a material system, the technique utilizes the relations between a signal transmitted through a reference material at normal incidence and signals transmitted through the material system at different oblique angles of incidence. The material system may be composed... View full abstract»

• ### Integral Equation Analysis of Plane Wave Scattering by Coplanar Graphene-Strip Gratings in the THz Range

Publication Year: 2013, Page(s):666 - 674
Cited by:  Papers (46)
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The plane wave scattering and absorption by finite and infinite gratings of free-space standing infinitely long graphene strips are studied in the THz range. A novel numerical approach, based on graphene surface impedance, hyper-singular integral equations, and the Nystrom method, is proposed. This technique guarantees fast convergence and controlled accuracy of computations. Reflectance, transmit... View full abstract»

• ### Demonstration of a G-Band Transceiver for Future Space Crosslinks

Publication Year: 2013, Page(s):675 - 681
Cited by:  Papers (9)
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This letter reports on the demonstration of a transceiver operating from 190 to 200 GHz. The system is assembled using splitblock waveguide integrated microwave assemblies, with MMICs realized using advanced InP HEMTs with sub-50 nm gate lengths. Across the band a receiver noise figure 6 dB and transmitter output power >20 dBm have been demonstrated. A table top link demonstrated successful QPS... View full abstract»

• ### IEEE Transactions on Terahertz Science and Technology Information for Authors

Publication Year: 2013, Page(s): 682
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## Aims & Scope

IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.

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## Meet Our Editors

Editor-in-Chief
Jan Stake
Chalmers University of Technology
Terahertz and Millimetre Wave Laboratory
Sweden