A unified IP Design Platform for extremly flexible High Performance RF and AMS Macros using Standard Design Tools

2002 ◽  
pp. 87-97 ◽  
Author(s):  
Reimund Wittmann ◽  
Mohsen Darianian ◽  
Dirk Bierbaum ◽  
Pasi Ruhanen ◽  
Werner Schardein
Keyword(s):  
High Performance ◽  
Design Tools ◽  
Standard Design

scholarly journals VLSI ARCHITECTURE OF PARALLEL MULTIPLIER– ACCUMULATOR BASED ON RADIX-2 MODIFIED BOOTH ALGORITHM

2012 ◽  
pp. 40-46
Author(s):  
Mr.M.V. Sathish ◽  
Mrs. Sailaja
Keyword(s):  
Signal Processing ◽  
High Speed ◽  
High Performance ◽  
Vlsi Architecture ◽  
Clock Frequency ◽  
Parallel Multiplier ◽  
Hybrid Type ◽  
Standard Design ◽  
Overall Performance ◽  
And Performance

A new architecture of multiplier-andaccumulator (MAC) for high-speed arithmetic. By combining multiplication with accumulation and devising a hybrid type of carry save adder (CSA), the performance was improved. Since the accumulator that has the largest delay in MAC was merged into CSA, the overall performance was elevated. The proposing method CSA tree uses 1’s-complement-based radix-2 modified Booth’s algorithm (MBA) and has the modified array for the sign extension in order to increase the bit density of the operands. The proposed MAC showed the superior properties to the standard design in many ways and performance twice as much as the previous research in the similar clock frequency. We expect that the proposed MAC can be adapted to various fields requiring high performance such as the signal processing areas.

scholarly journals CRISPR-SE: a brute force search engine for CRISPR design

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Bin Li ◽  
Poshen B Chen ◽  
Yarui Diao
Keyword(s):  
Search Engine ◽  
Sequence Alignment ◽  
Search Engines ◽  
High Performance ◽  
Design Tools ◽  
Brute Force ◽  
Guide Rnas ◽  
Speed Up ◽  
Brute Force Approach

Abstract CRISPR is a revolutionary genome-editing tool that has been broadly used and integrated within novel biotechnologies. A major component of existing CRISPR design tools is the search engines that find the off-targets up to a predefined number of mismatches. Many CRISPR design tools adapted sequence alignment tools as the search engines to speed up the process. These commonly used alignment tools include BLAST, BLAT, Bowtie, Bowtie2 and BWA. Alignment tools use heuristic algorithm to align large amount of sequences with high performance. However, due to the seed-and-extend algorithms implemented in the sequence alignment tools, these methods are likely to provide incomplete off-targets information for ultra-short sequences, such as 20-bp guide RNAs (gRNA). An incomplete list of off-targets sites may lead to erroneous CRISPR design. To address this problem, we derived four sets of gRNAs to evaluate the accuracy of existing search engines; further, we introduce a search engine, namely CRISPR-SE. CRISPR-SE is an accurate and fast search engine using a brute force approach. In CRISPR-SE, all gRNAs are virtually compared with query gRNA, therefore, the accuracies are guaranteed. We performed the accuracy benchmark with multiple search engines. The results show that as expected, alignment tools reported an incomplete and varied list of off-target sites. CRISPR-SE performs well in both accuracy and speed. CRISPR-SE will improve the quality of CRISPR design as an accurate high-performance search engine.

scholarly journals A New VLSI Architecture of Parallel Multiplier–Accumulator Based on Radix-2 Modified Booth Algorithm

2011 ◽  
pp. 196-202
Author(s):  
P.Sasi Bala ◽  
S. Raghavendra
Keyword(s):  
High Speed ◽  
High Performance ◽  
Vlsi Architecture ◽  
Alpha Power ◽  
Clock Frequency ◽  
Parallel Multiplier ◽  
Standard Design ◽  
Overall Performance ◽  
And Performance ◽  
Least Significant Bits

In this paper, we proposed a new architecture of multiplier-and-accumulator (MAC) for high-speed arithmetic.By combining multiplication with accumulation and devising a hybrid type of carry save adder (CSA), the performance was improved. Since the accumulator that has the largest delay in MAC was merged into CSA, the overall performance was elevated. The proposed CSA tree uses 1’s-complement-based radix-2 modified Booth’s algorithm (MBA) and has the modified array for the sign extension in order to increase the bit density of the operands. The CSA propagates the carries to the least significant bits of the partial products and generates the least significant bits in advance to decrease the number of the input bits of the final adder. Also, the proposed MAC accumulates the intermediate results in the type of sum and carry bits instead of the output of the final adder, which made it possible to optimize the pipeline scheme to improve the performance. The proposed architecture was synthesized with 250, 180 and 130 m, and 90 nm standard CMOS library. Based on the theoretical and experimental estimation, we analyzed the results such as the amount of hardware resources, delay, and pipelining scheme. We used Sakurai’s alpha power law for the delay modeling. The proposed MAC showed the superior properties to the standard design in many ways and performance twice as much as the previous research in the similar clock frequency. We expect that the proposed MAC can be adapted to various fields requiring high performance such as the signal processing areas.

Ensuring Successful Ship Construction Outcomes: Using More Physics-Based Design Tools in Early Concept Design

2012 ◽  
Author(s):  
Robert G. Keane
Keyword(s):  
Collaborative Design ◽  
High Performance ◽  
Early Stage ◽  
Ship Design ◽  
Design Tools ◽  
Concept Design ◽  
Ship Construction ◽  
Design Engineers ◽  
Naval Ship ◽  
American Society

The Navy has experimented with many ways to improve the producibility of naval ship designs. In terms of effectiveness - does the ship do what it is supposed to do - the Navy has been reasonably successful. However, in terms of efficiency - are the ships efficient to produce and own - there is still much room for improvement. Design for producibility – being able to efficiently produce a warship - must start during the earliest stages of concept design and continue to be addressed during the subsequent pre-production processes. However, many early stage naval ship design engineers either do not recognize this need or do not know how to design for producibility. A number of improvements to early stage ship design capabilities are being developed in order to make the process both effective and efficient. This paper addresses the critical stage of the collaborative Design-Build-Own process of initially sizing the hull during concept design. The author proposes the development and use of more physics-based design tools during concept design, such as those being developed under the DoD High Performance Computing Modernization Program’s Computational Research & Engineering for Acquisition Tools & Environments (CREATE) – SHIPS Project. These new ship design methodologies will enable conceptual design engineers to adequately size a ship to meet military performance requirements and to have a low enough ship density to ensure successful ship construction outcomes. The director of a Netherlands’ shipyard which designs and builds surface combatants recently stated at a luncheon of the American Society of Naval Engineers (ASNE), “We learned a long time ago to give ourselves enough space to build a ship – steel is cheap, air is free!”

Efficiency of the High Contact Ratio Involute Spur Gears With Asymmetric Teeth

2010 ◽  
Author(s):  
F. Karpat ◽  
S. Ekwaro-Osire
Keyword(s):  
High Performance ◽  
Load Capacity ◽  
Design Parameters ◽  
Spur Gears ◽  
Contact Ratio ◽  
Pressure Angle ◽  
Low Weight ◽  
Standard Design ◽  
Load Carrying ◽  
The Impact

Gears with asymmetric teeth have unique potential for application in gearboxes, particularly when uni-directional loading is applied. Most recently, gears with asymmetric teeth have received much attention for use in applications that require high performance due to increased load capacity. Such applications include aircraft and wind turbine. These gears offer flexibility to designers due to their non-standard design. In asymmetric teeth, the geometry of the drive side is not to be symmetric to the coast side. In other words, the pressure angle on the drive side is greater or smaller than that on the coast side. Asymmetry between tooth sides provide vital in obtaining key properties, such as high load carrying capacity, low weight, low wear or low vibration. In order to effectively design asymmetric teeth, it is necessary to perform analyses on the efficiency of these gears under various loading. In this study, the results obtained on high contact ratio involute spur gears with asymmetric teeth are presented and discussed. The impact of a few design parameters, such as pressure angle or tooth height, on sliding velocities and friction is investigated and illustrated with numerical examples.

Fabrication and Characterization of Annular-Shaped Piezoelectric Micromachined Ultrasonic Transducer Mounted with Pb(Zr,Ti)O3-Based Monocrystalline Thin Film

2021 ◽  
Author(s):  
Ziyi Liu ◽  
Shinya Yoshida ◽  
Shuji Tanaka
Keyword(s):  
Thin Film ◽  
Resonance Frequency ◽  
High Performance ◽  
Figure Of Merit ◽  
Ultrasonic Transducer ◽  
Device Fabrication ◽  
Static Displacement ◽  
Standard Design ◽  
Displacement Sensitivity

Abstract In this study, we propose an annular-shaped piezoelectric micromachined ultrasonic transducer (pMUT) based on a Pb(Zr,Ti)O3-based monocrystalline thin film. This pMUT is expected to increase the resonance frequency while maintaining displacement sensitivity, making it superior to an island-shaped pMUT, which is a conventional design. To demonstrate the validity of this assumption, annular- and island-shaped pMUTs with a 60-μm-diameter diaphragm were prototyped and characterized. As a result, the annular-shaped pMUT exhibited a resonance frequency of 11.9 MHz, a static displacement sensitivity of 2.35 nm/V and a transmitting figure-of-merit (FOM) of 28 nm∙MHz/V. On the other hand, the island-shaped pMUT exhibited a resonance frequency of 9.6 MHz and a static displacement of 2.5 nm/V and an FOM of 24 nm∙MHz/V. Therefore, the annular-shaped pMUT was experimentally demonstrated to provide a higher FOM compared to the island-shaped pMUT. In addition, the annular-shaped pMUT with the optimal dimensions is found to be able to keep a relatively large fabrication margin. This is an advantageous point for the practical device fabrication. We believe this design has a potential to become a standard design for high-performance pMUT devices.

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