scholarly journals Building blocks for future dual-channel GaN gate drivers: Arbitrary waveform driver, bootstrap voltage supply, and level shifter

2019 ◽  
Author(s):  
Dawei Liu ◽  
Harry C. P. Dymond ◽  
Jianjing Wang ◽  
Bernard H. Stark ◽  
Simon J. Hollis
Keyword(s):  
Building Blocks ◽  
Voltage Supply ◽  
Dual Channel ◽  
Level Shifter ◽  
Arbitrary Waveform ◽  
Gate Drivers

scholarly journals Picosecond optical pulse processing using a terahertz-bandwidth reconfigurable photonic integrated circuit

Nanophotonics ◽  
2018 ◽  
Vol 7 (5) ◽  
pp. 837-852 ◽  
Author(s):  
Yiwei Xie ◽  
Leimeng Zhuang ◽  
Arthur J. Lowery
Keyword(s):  
Signal Processing ◽  
Integrated Circuit ◽  
Building Blocks ◽  
Optical Signal ◽  
Optical Pulses ◽  
Photonic Integrated Circuit ◽  
Waveform Generation ◽  
Wide Range ◽  
Arbitrary Waveform ◽  
Signal Processors

AbstractChip-scale integrated optical signal processors promise to support a multitude of signal processing functions with bandwidths beyond the limit of microelectronics. Previous research has made great contributions in terms of demonstrating processing functions and device building blocks. Currently, there is a significant interest in providing functional reconfigurability, to match a key advantage of programmable microelectronic processors. To advance this concept, in this work, we experimentally demonstrate a photonic integrated circuit as an optical signal processor with an unprecedented combination of two key features: reconfigurability and terahertz bandwidth. These features enable a variety of processing functions on picosecond optical pulses using a single device. In the experiment, we successfully verified clock rate multiplication, arbitrary waveform generation, discretely and continuously tunable delays, multi-path combining and bit-pattern recognition for 1.2-ps-duration optical pulses at 1550 nm. These results and selected head-to-head comparisons with commercially available devices show our device to be a flexible integrated platform for ultrahigh-bandwidth optical signal processing and point toward a wide range of applications for telecommunications and beyond.

scholarly journals 0.5-V Frequency Dividers in Folded MCML Exploiting Forward Body Bias: Analysis and Comparison

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1383
Author(s):  
Francesco Centurelli ◽  
Giuseppe Scotti ◽  
Gaetano Palumbo
Keyword(s):  
Power Consumption ◽  
Low Voltage ◽  
Building Blocks ◽  
Frequency Divider ◽  
Cmos Process ◽  
Design Strategies ◽  
Frequency Dividers ◽  
Level Shifter ◽  
Forward Body Bias ◽  
Body Bias

Two frequency divider architectures in the Folded MOS Current Mode Logic which allow to operate at ultra-low voltage thanks to forward body bias are presented, analyzed, and compared. The first considered architecture exploits nType and pType divide-by-two building blocks (DIV2s) without level shifters, whereas the second one is based on the cascade of nType DIV2s with input level shifter. Both the architectures have been previously proposed by the same authors with higher supply voltages, but are able to work at a supply voltage as low as 0.5 V due to the threshold lowering allowed by forward body bias. For each architecture, analytical design strategies to optimize the divider under different operation scenarios are considered and a comparison among all the treated case studies is presented. Simulation results considering a commercial 28 nm FDSOI CMOS process are reported to confirm the advantages and features of the different architectures and design strategies. The analysis show that the use of the forward body bias allows to design frequency dividers which have the best efficiency. Moreover, we have found that the frequency divider architecture based on nType and pType DIV2s without level shifter provides always better performance both in terms of speed and power consumption approaching about 17 GHz of maximum operating frequency with less than 30 μW power consumption.

122 GHz single-chip dual-channel SMD radar sensor with on-chip antennas for distance and angle measurements

2015 ◽  
Vol 7 (3-4) ◽  
pp. 407-414 ◽  
Author(s):  
Mekdes G. Girma ◽  
Markus Gonser ◽  
Andreas Frischen ◽  
Jürgen Hasch ◽  
Yaoming Sun ◽  
...  
Keyword(s):  
Building Blocks ◽  
Single Chip ◽  
Fully Integrated ◽  
Dual Channel ◽  
Angle Measurements ◽  
Bicmos Technology ◽  
Measurement Results ◽  
Sige Bicmos ◽  
On Chip ◽  
Digital Processor

This paper describes the design considerations, integration issues, packaging, and experimental performance of recently developed D-Band dual-channel transceiver with on-chip antennas fabricated in a SiGe-BiCMOS technology. The design comprises a fully integrated transceiver circuit with quasi-monostatic architecture that operates between 114 and 124 GHz. All analog building blocks are controllable via a serial peripheral interface to reduce the number of connections and facilitate the communication between digital processor and analog building blocks. The two electromagnetically coupled patch antennas are placed on the top of the die with 8.6 dBi gain and have a simulated efficiency of 60%. The chip consumes 450 mW and is wire-bonded into an open-lid 5 × 5 mm2quad-flat no-leads package. Measurement results for the estimation of range, and azimuth angle in single object situation are presented.

BN-heteroacene-cored luminogens with dual channel detection for fluoride anions

2016 ◽  
Vol 4 (6) ◽  
pp. 1159-1164 ◽  
Author(s):  
Jing Zhou ◽  
Ruizhi Tang ◽  
Xinyang Wang ◽  
Wanzheng Zhang ◽  
Xiaodong Zhuang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Building Blocks ◽  
Conjugated Oligomers ◽  
Channel Detection ◽  
Dual Channel ◽  
Polycyclic Aromatic

Very recently, polycyclic aromatic hydrocarbons (PAHs) have been extremely extended by replacing CC units with isoelectronic B–N ones, however, BN-containing π-conjugated oligomers or polymers are still very less explored due to the lack of appropriate building blocks.

A Versatile 200-V Capacitor Coupled Level Shifter for Fully Floating Multi MHz Gate Drivers

2021 ◽  
pp. 1-1
Author(s):  
Van Ha Nguyen ◽  
Nam Ly ◽  
Abdul Hafiz Alameh ◽  
Yves Blaquiere ◽  
Glenn Cowan
Keyword(s):  
Level Shifter ◽  
Gate Drivers

Photochemical Evolution of Interstellar/Precometary Organic Material

1997 ◽  
Vol 161 ◽  
pp. 23-47 ◽  
Author(s):  
Louis J. Allamandola ◽  
Max P. Bernstein ◽  
Scott A. Sandford
Keyword(s):  
Origin Of Life ◽  
Building Blocks ◽  
Complex Species ◽  
Infrared Observations ◽  
Interstellar Ice ◽  
Polycyclic Aromatic ◽  
Ultraviolet Photolysis ◽  
The Origin Of Life ◽  
Simple Molecules ◽  
Complex Organic

AbstractInfrared observations, combined with realistic laboratory simulations, have revolutionized our understanding of interstellar ice and dust, the building blocks of comets. Since comets are thought to be a major source of the volatiles on the primative earth, their organic inventory is of central importance to questions concerning the origin of life. Ices in molecular clouds contain the very simple molecules H2O, CH3OH, CO, CO2, CH4, H2, and probably some NH3and H2CO, as well as more complex species including nitriles, ketones, and esters. The evidence for these, as well as carbonrich materials such as polycyclic aromatic hydrocarbons (PAHs), microdiamonds, and amorphous carbon is briefly reviewed. This is followed by a detailed summary of interstellar/precometary ice photochemical evolution based on laboratory studies of realistic polar ice analogs. Ultraviolet photolysis of these ices produces H2, H2CO, CO2, CO, CH4, HCO, and the moderately complex organic molecules: CH3CH2OH (ethanol), HC(= O)NH2(formamide), CH3C(= O)NH2(acetamide), R-CN (nitriles), and hexamethylenetetramine (HMT, C6H12N4), as well as more complex species including polyoxymethylene and related species (POMs), amides, and ketones. The ready formation of these organic species from simple starting mixtures, the ice chemistry that ensues when these ices are mildly warmed, plus the observation that the more complex refractory photoproducts show lipid-like behavior and readily self organize into droplets upon exposure to liquid water suggest that comets may have played an important role in the origin of life.

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

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