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

共 836 条记录，以下是21-30 订阅

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Improving Performance of InGaP/GaAs HBT Arrays by means of Temperature-dependent Base Ballasting Resistors 18

Improving Performance of InGaP/GaAs HBT Arrays by means of T...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Scognamillo, Ciro Catalano, Antonio Pio d'Alessandro, Vincenzo Zampardi, Peter J. Burger, Kerry Univ Federico II Dept Elect Engn & Informat Technol Naples Italy Qorvo Inc Newbury Pk CA USA

ISBN: (纸本)9798350303209

Base ballasting resistors (BBRs) are commonly adopted to minimize electrothermal (ET) effects in arrays of bipolar transistors for power amplifier (PA) applications. In this paper, innovative BBRs with temperature-dependent resistivity are proposed in order to improve the trade-off between safe-operating area (SOA) and radiofrequency (RF) performances. As a simple case-study, a three-cell heterojunction bipolar transistor (HBT) fabricated by Qorvo is considered and circuital ET simulations are performed in AdS. Results of the comparison between the proposed strategy and the traditional one are discussed, thus providing useful insights into the advantages of temperature-dependent BBRs.

关键词： Base ballasting resistors (BBRs) electrothermal (ET) simulations gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) safe operating area (SOA)

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An External-Capacitorless High-PSR Linear Voltage Regulator With Source-Follower-Based Pre-Filter 18

An External-Capacitorless High-PSR Linear Voltage Regulator ...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Wehr, Erik Zekorn, Tobias Vohl, Kenny Wunderlich, Ralf Heinen, Stefan Rhein Westfal TH Aachen Integrated Analog Circuits & RF Syst Kopernikusstr 16 D-52074 Aachen Germany

ISBN: (纸本)9798350303209

This paper presents an external-capacitorless linear voltage regulator for supply noise decoupling of a sensitive clock synthesizer circuit in a gate driver IC. The design generates a precise and low-noise 1.8V output voltage from the noisy 5V supply rail of the system. The regulator architecture is based on a source follower pre-filter in combination with an NMOS pass-transistor. A worst-case PSR of 43 dB is achieved across the whole load current range of up to 5 mA. The total quiescent current is 20 mu A and the occupied area, including the 8 pF on-chip output capacitance, is only 0.012mm(2). The circuit is implemented in a 0.18 mu m BCd technology.

关键词： External-capacitorless low-dropout regulator (LdO) NMOS LdO power supply rejection (PSR) source follower pre-filter

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Noise Figure Analysis in Current Mode direct Conversion Receivers 18

Noise Figure Analysis in Current Mode Direct Conversion Rece...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Luongo, Alessio d'Amico, Stefano Inversi, Maurizio Malvasi, Angelo Univ Salento Dept Engn Innovat Via Monteroni I-73100 Lecce Italy Cortus Srl Via Tufi 4 I-73047 Lecce Italy

ISBN: (纸本)9798350303209

The purpose of this paper is to face the problem of the noise figure calculation in case of direct conversion current mode receiver (RX). In the considered receivers architecture the down-conversion operation is done by mixing the input current signal by a square waveform oscillating at a frequency equal to the carrier of the RF signal. Moreover, the presence of the harmonics in the square waveform mixing signal produces noise folding which worsen the noise figure of the RX. A possible solution has been proposed and it consists to introduce a band-pass filtering after the low-noise transconductance amplifier. After a system level analysis of the problem a circuit example in 65nm CMOS technology is proposed. Calculated and simulated results for the noise figure match very well demonstrating the correctness of the proposed approach.

关键词： Noise Figure Noise folding direct-conversion receiver Current-Mode receiver

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A 7.69 ENOB, 161?W SAR AdC in 28nm CMOS for Proton Sound detectors 19

A 7.69 ENOB, 161?W SAR ADC in 28nm CMOS for Proton Sound Det...

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19th conference on ph.d research in microelectronics and electronics, PRIME 2024

作者： Turossi, davide Vallicelli, Elia Arturo de Matteis, Marcello di Meo, Gennaro d'Ottavi, Fabio Baschirotto, Andrea University of Milano-Bicocca Department of Physics Milan20126 Italy Section of Milano-Bicocca Milan20126 Italy University Federico Ii Department of Electrical Engineering and Information Technologies Naples80138 Italy

ISBN: (纸本)9798350386301

Imaging in proton-based radiotherapy can be advanced by the full characterisation of the thermoacoustic signal generated after the deposition of the proton beam energy into the absorber material. This paper presents an 8-bit 20M Samples Per Second fully differential Successive Approximation Register designed in 28nm CMOS for new generation Proton Sound detectors. The specifications of the converter are determined by the low amplitude, high frequency and non-periodicity of the thermoacoustic signal, and by the electrical requirements of the detector acquisition chain. The proposed converter achieves, in nominal conditions, a Signal to Noise Ratio of 48.07, corresponding to an Equivalent Number Of Bits of 7.69, near ideal differential and integral non-linearity, and a total power consumption of $160.98\mu W$. The circuit is designed to be robust to Process- Voltage-Temperature variations being able to achieve a worst-case-scenario Equivalent Number Of Bits of 7.42, and to mismatch suffering a maximum full-scale voltage reduction of $3LSB$. © 2024 IEEE.

关键词： Signal to noise ratio

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A 270 fJ/op 5.8 GHz MOS Current Mode Logic d-Latch for High-Speed Application 18

A 270 fJ/op 5.8 GHz MOS Current Mode Logic D-Latch for High-...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Alshehri, Abdullah Alqarni, Abdullah Yang, Kuilian Fariborzi, Hossein King Abdullah Univ Sci & Technol KAUST Comp Elect & Math Sci & Engn Div Thuwal Saudi Arabia Umm Al Qura Univ Elect & Commun Engn Al Leith Saudi Arabia

ISBN: (纸本)9798350303209

In this paper, we present the design of a new low-power, high-performance MOS Current Mode Logic (MCML) d-Latch. The proposed design consists of cross-coupled transistors which dynamically control the load resistance and eliminate static power dissipation. The performance of the design was improved by reducing the threshold voltage of the input transistors at the critical phase to switch them ON faster using the clocked-driven forward body biasing technique. The proposed design achieves an energy improvement of 54% and 49% and a performance improvement of 20% and 43% compared to the Folded and Folded (dTMOS) d-Latches, respectively. The designs were simulated on Cadence Virtuoso AdE tool using 40 nm technology TSMC PdK. Moreover, the proposed design provides higher output voltage swing and is less sensitive to the change of load capacitance compared to the other designs.

关键词： MCML Current Mode Logic (CML) d-Latch low power Forward body biasing cross-coupled transistors

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A Reconfigurable dual-Mode Integrated CMOS Laser diode driver for iToF/dToF Based 3d Sensing 18

A Reconfigurable Dual-Mode Integrated CMOS Laser Diode Drive...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Yang, Ruixuan Yang, Yuye Ma, Shuaizhe Zhang, Bing Li, dan Xi An Jiao Tong Univ Fac Elect & Informat Engn Xian Peoples R China

ISBN: (纸本)9798350303209

A reconfigurable dual-mode laser diode driver has been designed in a standard 180-nm CMOS process for iToF(indirect Time-of-Flight) and dToF (direct Time-of-Flight) based 3d sensing. A reconfigurable and power-efficient driver output stage is proposed, which enables both iToF and dToF operation. In iToF mode, the driver produces a maximum output current of 4.2 A with 50% duty cycle. A ringing suppression circuit is also introduced to reduce the undesired ringing at the end of each pulse. In dToF mode, the driver generates a 3.8-A peak pulse with a minimum pulse width of 737 ps. The output efficiency is 87% in iToF mode and 92% in dToF mode with 4-A output current. To the authors' knowledge, this is the first reconfigurable dual-mode laser diode driver compatible with both iToF and dToF LidAR systems.

关键词： laser diode driver CMOS dual-mode time-of-flight

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Switching Mode Power Amplifier for Fully digital RF Transmitter at 3.6 GHz in 22 nm Fd-SOI CMOS 18

Switching Mode Power Amplifier for Fully Digital RF Transmit...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Wittlinger, Manuel Groezing, Markus Berroth, Manfred Univ Stuttgart Inst Elect & Opt Commun Engn D-70569 Stuttgart Germany

ISBN: (纸本)9798350303209

Post-layout simulation results of a current mode switching mode power amplifier (CM-SMPA) in 22 nm Fd-SOI CMOS for a fully digital RF transmitter with a peak output power of 23.51 dBm (224.4 mW) at 3.6 GHz are presented. The CM-SMPA is driven by a pulse-width (PW) and pulse-position (PP) modulated signal for amplitude and phase control. To increase the amplitude dynamic range, the conductance (G) of the switches is also modulated. For a 64-QAM signal with 112.5 MBd, an error vector magnitude (EVM) of -32.50 dB with a maximum adjacent channel leakage ratio (ACLR) of -40.81 dB in the neighbor channel is achieved. The average total efficiency and drain efficiency are 24.93 % and 32.12 % respectively. The large signal bandwidth potential of this transmitter concept is shown by a simulation of a 450 MBd 64-QAM with a channel bandwidth of 675 MHz.

关键词： CMOS power amplifier switching mode amplifier digital RF transmitter pulse-width modulation broadband amplifier

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Sub-modular MPPT for decentralised Grid Feed-in Under Fast Changing Irradiation Applications 18

Sub-modular MPPT for Decentralised Grid Feed-in Under Fast C...

引用

18th International conference on ph.d research in microelectronics and electronics (PRIME)

作者： Weihs, Leon Zoche, Jonas Grobe, Jan Wunderlich, Ralf Heinen, Stefan Rhein Westfal TH Aachen Integrated Analog Circuits & RF Syst Kopernikusstr 16 D-52074 Aachen Germany

ISBN: (纸本)9798350303209

A system for decentralised grid feed-in of solar sub-modules is presented. The system makes use of monolithically integrated sub-modular maximum power point tracking, boosting the output voltage to 30V. Multiple sub-modules of different topologies and insolation can thereby be combined to feed into one dC-dC converter, each in turn feeding into a 350V HV dC grid. This allows for novel applications, such as noise barriers or facades, reducing losses associated to traffic or pollution induced partial shading. Measurements show increased power extraction throughout partial shading events. Energy gain is highly dependent on shading frequency, length and affected module area. Sub-modular peak throughput lies at 140W, while grid feed-in is limited to 600W per converter.

关键词： MPPT Boost Converter PV Sub-module Integrated dC-dC dC Grid Submodule Sub-string

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A 2+1 Hybrid Incremental MASH Converter 17

A 2+1 Hybrid Incremental MASH Converter

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17th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Colucci, Antonio Rigo, Massimo Fiocchi, Carlo Malcovati, Piero Bonizzoni, Edoardo Univ Pavia Dept Elect Comp & Biomed Engn Pavia Italy Ams OSRAM Grp Garching Germany Ams OSRAM Grp Pavia Italy

ISBN: (纸本)9781665467001

This paper explores the possibility of using the MASH (multi-stage noise shaping) technique in incremental converters to be used for x-rays detection, targeting a medium-high resolution in a limited conversion time. The presented 2+1 MASH receives at the input a current generated by a photodiode. The adopted scheme is hybrid as the input stage is continuous time while the remaining portion of the circuit operates at discrete time. The converter is studied at the behavioural level in the MATLAB-Simulink environment and some design trade-offs are analysed and discussed in details.

关键词： Multi-stage noise shaping Simulation X-ray detection Modulation Switches Mathematical models microelectronics

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An Automatic Tuning System to Improve Near-Field Powering in Implanted electronics 17

An Automatic Tuning System to Improve Near-Field Powering in...

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17th conference on ph.d research in microelectronics and electronics (PRIME)

作者： Collu, Riccardo Salis, Cinzia Barbaro, Massimo Univ Cagliari Dept Elect & Elect Engn I-09123 Cagliari Italy

ISBN: (纸本)9781665467001

developments in the field of inductive charging have opened the door to the use of devices without a battery or with a wireless rechargeable battery. Although this aspect is significant in the field of wearable devices, it is even more significant in the field of transcutaneous connections for implanted electronics and batteries that can greatly benefit the safety and comfort of the patient. The performance on the ability to transmit and store energy through an inductive channel can, however, be influenced by various environmental and manufacturing factors, with significant variations on the effective values of the LC resonant pair. In this regard, an automatic tuning mechanism based on a SAR algorithm implemented in 180nm CMOS technology is proposed.

关键词： Implantable electronics Near-Field powering Wireless Power Transfer magnetic coupling automatic tuning

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