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检索条件"任意字段=Conference on Ph.D Research in Microelectronics and Electronics"

共 834 条记录，以下是161-170 订阅

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Implementation of a Fully-differential Operational Amplifier with Wide-Input Range, High-Impedance Common-Mode Feedback 15

Implementation of a Fully-Differential Operational Amplifier...

引用

15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Wenger, Y. Meinerzhagen, B. TU Braunschweig Inst Electron Devices & Circuits Hans Sommer Str 66 D-38106 Braunschweig Germany

ISBN: (纸本)9781728135496

Stabilizing the common-mode in fully-differential amplifiers is a well-known challenge. Conventional approaches usually are not able to deal with output nodes that have both: a high impedance and a high voltage swing. In this work, we implement a common-mode feedback architecture that was previously proposed in [2] but not yet realized. A two-stage fully-differential operational amplifier in a 0.25 mu m CMOS technology is used to demonstrate the feasibility of the new architecture. Measurements of the overall amplifier verify that the studied common-mode feedback is indeed a good candidate for opamps with high output impedance and rail-to-rail swing.

关键词： Common-mode feedback Operational amplifier rail-to-rail CMOS

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Study of a Terahertz-band High-order Mode Orthogonal Grating Waveguide Slow-wave Structure

Study of a Terahertz-band High-order Mode Orthogonal Grating...

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2021 IET ph.d Candidates Academic Seminar (China) on Vacuum electronics, phASe-VE 2021

作者： Liao, Jiacai Shu, Guoxiang Ren, Junchen He, Jingcong Lin, Jujian Lin, Guangxin Li, Qi Chang, Zhiwei He, Wenlong College of Electronics and Information Engineering Shenzhen University Shenzhen China Institute of Microeconomics Shenzhen University Shenzhen China

ISBN: (纸本)9781839537547

The combination of dual sheet electron beams and high-order mode planar slow-wave structure (SWS) contributes to a high output power of the terahertz-band traveling wave tube. In this paper, a novel orthogonal grating waveguide (OGW) operating in the TM21-like mode has been proposed and studied. Compared with the fundamental-mode single rectangular grating waveguide, it is capable of supporting dual sheet electron beams and possesses larger geometric dimensions. Compared with our previously reported OGW, this SWS has adopted a V-shaped grating, which contributes to a higher transmission. A 120-period upgraded orthogonal grating SWS circuit is designed. For a cold test, two identical TEƶ10-TEƶ20 mode converters are introduced at the two ends of the SWS circuit. Simulation results show that the transmission and reflection coefficients are higher than -1.6 dB and lower than -10.0 dB in the frequency range of 232.9-276.6 GHz, respectively. A prototype of the designed OGW has been fabricated by Nano-CNC technique and will be measured by using an H-band Vector Network Analyzer. © 2021 IET conference Proceedings. All rights reserved.

关键词： Electron beams

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AC/dC Buck Boost Converter for Wind-Powered Wireless Sensors 15

AC/DC Buck Boost Converter for Wind-Powered Wireless Sensors

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15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Haidar, Mohammad Chible, Hussein Morasso, Remy Caviglia, daniele d. Univ Genoa Cosm Lab DITEN Genoa Italy Lebanese Univ MECRL Lab EDST Beirut Lebanon

ISBN: (纸本)9781728135496

In this work, a power management system for the fluttering wind energy harvester FLEHAP is presented and tested. The proposed system uses a low power microcontroller running a simple power management algorithm, and an optimised self-powered circuit consisting of a buck-boost converter and an auxiliary circuit, which is capable of providing enough power for the functionality of the components. The primary goal of the system is to ensure the power delivery capability and self-start-up, while the secondary goal is to provide high power efficiency on the output. This approach gives an advantage over the commercial converters tested on the same harvester in terms of efficiency, as well as programmability and flexibility in the power monitoring and management, allowing the system to be either used with different type of harvesters, or being a part of more advanced power management scheme through the ability of communicating data.

关键词： Energy harvesting Switching converter Optimization Wind energy MPPT

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A Generic Procedural Generator for Sizing of Analog Integrated Circuits 15

A Generic Procedural Generator for Sizing of Analog Integrat...

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15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Schweikardt, Matthias Uhlmann, Yannick Leber, Florian Scheible, Juergen Habal, Husni Reutlingen Univ D-72762 Reutlingen Germany Infineon Technol AG D-85579 Neubiberg Germany

ISBN: (纸本)9781728135496

In this paper, we address the novel EdP (Expert design Plan) principle for procedural design automation of analog integrated circuits, which captures the knowledge-based design strategy of human circuit designers in an executable script, making it reusable. We present the EdP Player, which enables the creation and execution of EdPs for arbitrary circuits in the Cadence (R) Virtuoso (R) design Environment. The tool provides a generic version of an instruction set, called EdPL (EdP-Language), enabling emulation of a typical manual analog sizing flow. To automate the design of a Miller Operational Amplifier and to create variants of a Smart Power IC, several EdPs were implemented using this tool. Employing these EdPs leads to a strong reduction of design time without compromising design quality or reliability.

关键词： procedure generator expert design plan electronic design automation smart power ic miller operational amplifier

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design Approach for a Broadband Class-d Power Amplifier for Low Power Application in a 28 nm digital CMOS Technology 15

Design Approach for a Broadband Class-D Power Amplifier for ...

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15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Sakalas, Mantas Wagner, Jens Joram, Niko Ellinger, Frank Tech Univ Dresden Chair Circuit Design & Network Theory Dresden Germany

ISBN: (纸本)9781728135496

This work presents a class d Power Amplifier (PA) analysis and design in digital CMOS technology. Two topologies of a class d PA were implemented, fabricated and tested under lab conditions. The 1st topology uses no bandwidth limiting linearization network and demonstrates an ultra-wideband 0 - 11 GHz operation. It features a very compact design, a peak power added efficiency (PAE) of 38 % and a flat output power of P-OUT = 10.5 dBm. The 2nd topology on the other hand, features harmonic filtering on the output side, yielding 2nd and 3rd harmonic suppression of 26 dBc and 32 dBc respectively, an output power P-OUT = 11 dBm and a peak PAE of 22.5 % within a 1 - 4 GHz bandwidth.

关键词： CMOS integrated circuits differential amplifiers linearization techniques power amplifiers

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A new compact multilevel inverter design with less power electronics component 3rd

A new compact multilevel inverter design with less power ele...

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3rd International conference on Intelligent Communication, Control and devices, ICICCd 2018

作者： Pachpor, Siddharth dutta, Subhankar Jagabar Sathik, M. Babel, Mudit Department of Electrical and Electronics Engineering SRM Institute of Science and Technology Chennai603203 India Department of Electronics and Telecommunication Engineering Rajiv Gandhi College of Engineering and Research Nagpur India

ISBN: (纸本)9789811386176

Nowadays, multilevel inverter with reduced switch count is more attractive among the researchers due to the unsuitability of the conventional multilevel inverter where the installation space is constrained. Two different algorithms have been proposed for determining the magnitude of dC voltage sources. In this project, a compact version of multilevel inverter design is suggested with reduced and limited power electronic components, which are compared with conventional and recent multilevel inverter topology in terms of a number of levels, auxiliary diode, gate driver circuits, and blocking voltage of switches. Simulation software such as MATLAB/Simulink and laboratory workbench-based experimental test has been conducted. Finally, the comparison between the simulation output and experimental is discussed to prove the superiority of suggested topology. © Springer Nature Singapore Pte Ltd. 2020.

关键词： Electric inverters

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4-Channel Front-End Integrated Circuit For Readout of Large Area of SiPM under Liquid Argon 15

4-Channel Front-End Integrated Circuit For Readout of Large ...

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15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Martinez, Alejandro d. R. Politecn Torino DET Turin Italy Ist Nazl Fis Nucl Sez Torino Turin Italy

ISBN: (纸本)9781728135496

This paper presents the structure and transistor-level design of CMOS front-end amplifier for the readout of large area SiPM at LAr temperature (87 K). The front-end circuit, a trans-impedance amplifier and a summing amplifier, has been designed using a standard 110 nm CMOS technology, and the simulation results with the foundry PdK are included in this work. Each stage is implemented in a Folded Cascode Operational Trans-impedance Amplifier (OTA) architecture with a power rail of +1.25 V and -1.25 V, a power consumption of 95 mW and an open-loop gain over 100 dB. The target sensor is a SiPM tile of 24 cm2 produced in the darkside collaboration project, with 6 M Omega of quenching resistance and 6 nF/cm(2) capacitance. For a single photoelectron (250 fC), the front-end can achieve a signal-noise ratio above 12 and a jitter better than 45 ns.

关键词： Capacitance Radio frequency Cryogenics Gain Signal to noise ratio detectors Transistors

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Comparison of direct digitization Current Sensing Circuits for EIS 15

Comparison of Direct Digitization Current Sensing Circuits f...

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15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Rajabzadeh, Mandi Haeberle, Matthias Ortmanns, Maurits Univ Ulm Inst Microelect D-89081 Ulm Germany

ISBN: (纸本)9781728135496

In this work, a qualitative comparison between state of the art current recorders for biomedical applications is presented. Prior work showed that direct digitizing frontends outweight their analog counterparts. This work performs a comparison between the direct digitization frontends, namely time-based and current-input CT Sigma delta M frontends. It is shown that time-based converters - due to usage of current conveyors to generate a low impedance node - suffer from inferior linearity. Also the trade-off between SNR versus conversion time limits their achievable SNR and the maximum input signal frequency. On the other hand, with the usage of a FIR-dAC within a current-input CT Sigma delta M, the requirements of the critical first amplifier are highly relaxed. In addition, the FIR-dAC reduces the influence of clock jitter and allows the current-input CT Sigma delta M to achieve a higher SNR and linearity compared to the time-based converters.

关键词： Linearity Transistors Impedance Jitter Frequency conversion Finite impulse response filters Clocks

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A 48 mW 18 Gb/s delay-Line Based 1:4 demultiplexer in 45-nm RFSOI CMOS 15

A 48 mW 18 Gb/s Delay-Line Based 1:4 Demultiplexer in 45-nm ...

引用

15th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Rehman, Sami Ur Khafaji, Mohammad Mahdi Carta, Corrado Ellinger, Frank Tech Univ Dresden Chair Circuit Design & Network Theory D-01069 Dresden Germany

ISBN: (纸本)9781728135496

This paper presents the design and characterization of a new delay-line based demultiplexer (demux). The demux works by setting the delay of each delay-element in the delay-line equal to the period of the input symbol and the delay of the delay-line equal to the period of the sampling clock. Once the delay-line is sampled, each sampled output represents a unique symbol in the input symbol sequence. As opposed to the traditional tree-architecture demux, the proposed delay-line demux dissipates power only in the delay-line. In addition to design simplicity, the delay-line demux also offers power and area advantages over tree demux when scaled to a higher channel count. designed in 45-nm RFSOI CMOS, the demux achieves 2.6 pJ/symbol of energy figure, which, to the best of the authors knowledge, is the best reported among inductor-less CMOS demuxes.

关键词： multiplexer demultiplexer energy figure delay-line sense amplifier flipflop current mode logic delay-element

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design and experiment of device for sheet beam TWT electron gun cathode and focusing electrode assembly

Design and experiment of device for sheet beam TWT electron ...

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IET ph.d Candidates Academic Seminar (China) on Vacuum electronics (phASe-VE 2021)

作者： J. Wang Y. Fan Research and Development Center for Microwave Devices and Systems Aerospace Information Research Institute Chinese Academy of Sciences Huairou district Beijing 101407 People's Republic of China

ISBN: (数字)9781839537547

In this paper, we present the design and experiment of a semi-automatic device for sheet beam traveling wave tube (TWT) electron gun cathode and focusing electrode assembly, which include cathode positioning module, focusing electrode positioning module, concentricity adjustment and clamping module, angle adjustment module, auxiliary support structure and automatic geometric measurement module. Using this device, it only takes 20 minutes to adjust the concentricity of the cathode and the focusing electrode to 30 microns and the angle to 0.5 degrees. In the subsequent welding process, the whole device remains clamped, the welding deformation can be limited to 10 microns. This device applied to the following W band TWT manufacturing, with rectangular waveguide grating slow wave structure (SWS), using a 32 kV, 550 mA electron beam, the measured peak power is over 2 kilowatts and the average output power is over 100 watts with 5% duty cycle at the frequency around 91.5 – 96 GHz. The results of the above sheet beam TWT test will be detailed in a subsequent manuscript.

关键词： cathodes electron beams electron guns millimetre wave tubes rectangular waveguides slow wave structures

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