# IEEE Transactions on Electron Devices

## Issue 99

Early Access articles are new content made available in advance of the final electronic or print versions and result from IEEE's Preprint or Rapid Post processes. Preprint articles are peer-reviewed but not fully edited. Rapid Post articles are peer-reviewed and edited but not paginated. Both these types of Early Access articles are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 22 of 22
• ### Influence of Pixel Design on Charge Transfer Performances in CMOS Image Sensors

Publication Year: 2018, Page(s):1 - 8
| | PDF (2665 KB)

The influence of pixel design on image lag is investigated by focusing on two different aspects which impact the charge transfer. First, it is confirmed that the transfer gate (TG) channel doping profile strongly affects image lag. Introducing a step under the TG in the potential diagram, due to the doping implant differences in the channel, enables very good transfer performances by limiting spil... View full abstract»

• ### Nanodiamond Thin Film Field Emitter Cartridge for Miniature High-Gradient Radio Frequency $X$-Band Electron Injector

Publication Year: 2018, Page(s):1 - 7
| | PDF (1581 KB)

The complete design, fabrication, and performance evaluation of a compact, single-cell, X-band (~9 GHz) electron injector based on a field emission cathode (FEC) is presented. A pulsed electron beam is generated by tens of kilowatts of radio frequency magnetron signals from a plug-in thin film nitrogen-incorporated ultrananocrystalline diamond ((N)UNCD) FEC cartridge. Testing of the X-band injecto... View full abstract»

• ### Development of a 1.5-kW Average Output Power Coupled-Cavity TWT With a 10% Bandwidth Operating in X-Band

Publication Year: 2018, Page(s):1 - 5
| | PDF (1104 KB)

A three-section coupled-cavity traveling-wave tube (CC-TWT) has been developed for avionic applications. The design parameters for a TWT operating in X-band with a high average power, high power, high efficiency, high duty, wideband, low weight, and rugged structure have been obtained. Data presented show a good agreement between simulation results and prototype test results. The small-signal simu... View full abstract»

• ### Extraction of Process Variation Parameters in FinFET Technology Based on Compact Modeling and Characterization

Publication Year: 2018, Page(s):1 - 8
| | PDF (3014 KB)

A parameter extraction methodology of statistical process variations in FinFET is presented in this paper. First, the main impacts of various variation sources are decomposed, with detailed discussion on the correlation between threshold voltage and subthreshold swing. Second, following the Fin-edge roughness (FER) and gate-edge roughness (GER) compact models, the physical parameters, autocorrelat... View full abstract»

• ### Design of Power-Rail ESD Clamp With Dynamic Timing-Voltage Detection Against False Trigger During Fast Power-ON Events

Publication Year: 2018, Page(s):1 - 9
| | PDF (3162 KB)

The RC-based power-rail electrostatic discharge (ESD) clamp with nMOS of large size has been widely utilized to enhance the ESD robustness of CMOS integrated circuits. However, such circuit design that only detects the rising time of ESD pulse may be accidentally triggered in some conditions, such as fast power-ON, hot-plug, and envelope tracking applications. In this paper, a new power-rail ESD c... View full abstract»

• ### A Double-Voltage-Controlled Effective Thermal Conductivity Model of Graphene for Thermoelectric Cooling

Publication Year: 2018, Page(s):1 - 7
| | PDF (1534 KB)

Graphene provides a new opportunity for thermoelectric study based on its unique heat transfer behavior controllable by a gate voltage. In this paper, an effective thermal conductivity model of graphene for thermoelectric cooling is proposed. The model is based on a double-voltage-control mechanism. According to the law of Fourier heat conduction, an effective thermal conductivity model of the pro... View full abstract»

• ### Numerical Investigation on Spent Beam Deceleration Schemes for Depressed Collector of a High-Power Gyrotron

Publication Year: 2018, Page(s):1 - 6
| | PDF (2071 KB)

Single-stage depressed collector systems are widely used in high-power gyrotrons in order to increase the overall efficiency. The position where the deceleration of the beam takes place influences the collector efficiency. In this paper, several deceleration schemes are numerically investigated for the short-pulse prototype of the 170-GHz, 1-MW European gyrotron for International Thermonuclear Exp... View full abstract»

• ### Investigation of Retention Behavior of TiOₓ/Al₂O₃ Resistive Memory and Its Failure Mechanism Based on Meyer-Neldel Rule

Publication Year: 2018, Page(s):1 - 6
| | PDF (1975 KB)

The understanding of failure behavior is one of the basic requirements for further development of nonvolatile resistive random access memory (RRAM) devices. In this paper, we show a detailed analysis of a temperature-dependent low-resistance state (LRS) retention failure behavior of RRAM based on TiOₓ/Al₂O₃ bilayer structure. The device is capable of showing good resistive swi... View full abstract»

• ### Automatic Hot-Test System for High Average/Continuous-Wave Power Gyro-TWTs

Publication Year: 2018, Page(s):1 - 7
| | PDF (3111 KB)

In this paper, an automatic hot-test system designed in developing high average/continuous-wave power gyrotron traveling-wave tube (gyro-TWT) is presented. The system framework and each subsystem including automatic data-acquisition module, antijamming data transmission module, data storage and analysis module, automatic control and protection module, and self-developed software are given in detai... View full abstract»

• ### A Paradigm for Integrated Circuits Based on the MSET Transistor

Publication Year: 2018, Page(s):1 - 6
| | PDF (1494 KB)

In the double-drain multistate electrostatically formed nanowire transistor (MSET), the electrostatically formed conduction channel shifts laterally by properly biasing the two side gates that enclose the bulk area. This current switching mechanism enhances functionality within a single device and sets the stage for a family of integrated-circuit building blocks that facilitate the implementation ... View full abstract»

• ### Accelerated Life Testing and Fault Analysis of High-Power LED

Publication Year: 2018, Page(s):1 - 7
| | PDF (2360 KB)

The quality assessment and reliability improvement of high-power light-emitting diodes (LEDs), which are used in lighting applications, are important. Conventional lifetime testing for LEDs lasts approximately 6000 h. Accelerated life testing (ALT) to quickly assess LED quality and faults is essential for the mass production of LEDs. This paper conducted a systematic nondestructive fault analysis ... View full abstract»

• ### Thermal Analysis of High-Average Power Helix Traveling-Wave Tube

Publication Year: 2018, Page(s):1 - 9
| | PDF (2270 KB)

The thermal simulation using ANSYS was carried out for estimating the maximum temperature and the temperature distribution in a high-average power broadband helix traveling-wave tube (TWT). The simulation was first carried out independently for the subassemblies such as the slow-wave structure, the output coupler, and the depressed collector; and the combined effect on the overall temperature insi... View full abstract»

• ### Small- and Large-Signal Analyses of Different Low-Pressure-Chemical-Vapor-Deposition SiNₓ Passivations for Microwave GaN HEMTs

Publication Year: 2018, Page(s):1 - 7
| | PDF (2487 KB)

Three types of SiNₓ passivation for microwave AlGaN/GaN HEMTs were deposited with low-pressure chemical vapor deposition under different deposition conditions, resulting in different silicon contents. The performance of the HEMTs is comprehensively investigated and compared. Both small- and large-signal analyses, such as generation-recombination (G-R) trap analysis, low-frequency noise char... View full abstract»

• ### Gain Analysis of a 0.2-THz Traveling-Wave Tube With Sheet Electron Beam and Staggered Grating Slow Wave Structure

Publication Year: 2018, Page(s):1 - 6
| | PDF (1716 KB)

Results of numerical simulation of a miniaturized sub-THz traveling-wave tube amplifier with sheet electron beam and planar grating slow wave structure (SWS) are presented. Cold characteristics of the SWS are calculated. Small-signal and large-signal gain regimes are studied by the 1-D parametric frequency-domain code. The results are verified by simulations using 3-D particle-in-cell codes. View full abstract»

• ### Numerical Studies on the Influence of Cavity Thermal Expansion on the Performance of a High-Power Gyrotron

Publication Year: 2018, Page(s):1 - 8
| | PDF (1492 KB)

An iterative procedure is described, which models the influence of the thermal expansion of the gyrotron cavity on the expected gyrotron performance. It is a multiphysics simulation method, which involves electrodynamic, thermal-hydraulic, and thermo-mechanical simulations. The method is applied to the first European 170-GHz, 1-MW continuous wave prototype gyrotron for the ITER. According to the s... View full abstract»

• ### Development of a 0.32-THz Folded Waveguide Traveling Wave Tube

Publication Year: 2018, Page(s):1 - 6
| | PDF (1912 KB)

A traveling wave tube amplifier operating above 300 GHz based on folded waveguide (FWG) slow-wave structure is presented in this paper. The design and test results of key components are presented, including FWG slow-wave structure, electron optic system, and RF windows. The FWG slow-wave structure of this prototype tube was fabricated by the high-speed precision milling technology; the dimension t... View full abstract»

• ### Large-Signal Static Compact Circuit Model of SiGe Heterojunction Bipolar Phototransistors: Effect of the Distributed Nature of Currents

Publication Year: 2018, Page(s):1 - 7
| | PDF (1699 KB)

This paper presents a physically based opto-electrical compact model of a SiGe/Si heterojunction phototransistor (HPT). This static large-signal model is intended to model the static electrical and optical static operation of the HPT. The measured HPT was developed by extending the structure of an existing SiGe heterojunction bipolar transistor (HBT) from the Telefunken GmbH process technology. Un... View full abstract»

• ### Third-Harmonic Traveling-Wave Tube Multiplier-Amplifier

Publication Year: 2018, Page(s):1 - 6
| | PDF (1480 KB)

A high-harmonic traveling-wave tube (HHTWT) is designed, developed, and tested in this paper. This device is configured as a multiplier-amplifier with Q-band input signals and its third harmonic, i.e., D-band output power. The tested result demonstrates that 280 mW at 133.5 GHz is obtained as a result of 200 mW at 44.5-GHz input signal. The simulation and experiment validate that the high-harmonic... View full abstract»

• ### Improved Suppression of Parasitic Oscillations in Gyrotron Beam Tunnels by Proper Selection of the Lossy Ceramic Material

Publication Year: 2018, Page(s):1 - 7
| | PDF (1113 KB)

Lossy dielectric materials are used in gyrotron beam tunnels to suppress possible parasitic oscillations by raising their starting currents. The dependence of the overall losses of the structure on the dielectric properties of the material is theoretically and numerically investigated and it is shown that materials with high values of the loss tangent are not suitable for the suppression of the pa... View full abstract»

• ### Experimental Time Evolution Study of the HfO₂-Based IMPLY Gate Operation

Publication Year: 2018, Page(s):1 - 7
| | PDF (1535 KB)

In the last years, memristor devices have been proposed as key elements to develop a new paradigm to implement logic gates. In particular, the memristor-based material implication (IMPLY) gate has been presented as a potential powerful basis for logic applications. In the literature, the IMPLY operation has been widely simulated, but most of the efforts have been just focused on accomplishing its ... View full abstract»

• ### HE₀₄ Mode Exciters With Flat Transmission and High Mode Purity for Confocal Gyro-TWAs

Publication Year: 2017, Page(s):1 - 7
| | PDF (2670 KB)

A new topology to excite the HE₀₄ mode in wide bandwidth for confocal gyro-TWAs is presented. The mode exciter consists of a TE₀₄ mode exciter and a TE₀₄-HE₀₄ transition waveguide section formed by two cascaded one-stage tapers. In addition, the closed-to-open confocal waveguide boundaries are studied. Numerical results show that the port ref... View full abstract»

• ### A Study of Velocity-Tapered Slow Wave Structures for High-Efficiency Backward Wave Oscillators

Publication Year: 2017, Page(s):1 - 7
| | PDF (2582 KB)

In this paper, we present a comprehensive study of multisection, velocity-tapered slow wave structures (SWSs) for highly efficient backward-wave oscillators (BWOs). The SWS velocity variation profiles are characterized by mathematical functions. Using particle-in-cell (PIC) simulations, the efficiencies of these SWSs are obtained along with their oscillation frequency response to variations in bea... View full abstract»

## Aims & Scope

IEEE Transactions on Electron Devices publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief

Giovanni Ghione
Politecnico di Torino,
10129 Torino, Italy