VLSI Design Based Delay and Power Performance Comparison and  Analysis of Multipliers

Recently, the problem of power dissipation has become more important in VLSI design. The multiplier is a major drain on resources. The multiplier is a basic operation in arithmetic. This article examines a variety of multipliers at the algorithmic, circuit, and layout levels. The multiplier schematic was designed using TANNER TOOL. It has been possible to increase the speed and area of multipliers by utilising Vedic mathematics for multiplication. Vedic mathematics' "Ni khilam sutra" formula can multiply large numbers. One of the primary objectives is to increase speed while simultaneously decreasing power, area, and delay.

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Design and Analysis of High Speed Low Power Hybrid Adder Using Transmission Gates

International Journal of New Practices in Management and Engineering ◽

10.17762/ijnpme.v5i03.46 ◽

2016 ◽

Vol 5 (03) ◽

pp. 07-12

Author(s):

Prof. Amruta Bijwar

Keyword(s):

Power Dissipation ◽

High Speed ◽

Arithmetic Operation ◽

Vlsi Design ◽

Full Adder ◽

Basic Component ◽

Xnor Gate ◽

Transmission Gates ◽

Design Systems ◽

Complex Circuits

Addition is the vital arithmetic operation and it acts as a base for many arithmetic operations such as multipliers, dividers, etc. A full adder acts as a basic component in complex circuits. Full adder is the essential segment in many applications such as DSP, Microcontroller, Microprocessor, etc. There exists an inevitable swap between speed and power indulgence in VLSI design systems. A new modified hybrid 1-bit full adder using TG is presented. Here, the circuit is replaced with a simple XNOR gate, which increases the speed. Due to this, transistor count gets reduced results in better optimization of area. The analysis has been carried out also for 2, 4, 8 and 16 bit and it is compared with the various techniques. The result shows a significant improvement in speed, area, power dissipation and transistor counts.

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TEMPERATURE MODELING OF GaAs DCFL

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156492000072 ◽

1992 ◽

Vol 03 (02) ◽

pp. 171-199 ◽

Cited By ~ 3

Author(s):

JEFF CONGER ◽

ANDRZEJ PECZALSKI ◽

MICHAEL S. SHUR

Keyword(s):

Temperature Dependence ◽

Power Dissipation ◽

Simple Structure ◽

Power Performance ◽

Performance Control ◽

Temperature Modeling ◽

Accurate Temperature ◽

And Performance

Direct-Coupled FET Logic (DCFL) is an important logic family for LSI GaAs FET circuits because of its simple structure and good speed/power performance. Since it is especially sensitive to temperature shifts of performance, accurate temperature modeling is critical for design of DCFL circuits. Using a version of SPICE modified to include FET temperature dependence, the performance of DCFL is simulated over temperature and compared with measured results. In addition, an improved version of DCFL known as E-E Logic (Enhancement-Enhancement Logic) is modeled over temperature. The performance of E-E Logic is compared to DCFL with depletion-mode FET and saturated resistor loads over temperature. E-E Logic is found to offer improved yield, power dissipation and performance control compared to conventional DCFL.

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Study on Fuel and Injection Influence on a Spark Ignition Aeropiston Engine

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.4047282 ◽

2020 ◽

Vol 142 (7) ◽

Author(s):

Wang Xiaogang ◽

Liu Bolan ◽

Yu Xiyang ◽

Yan Chao ◽

Yu Fei ◽

...

Keyword(s):

Performance Test ◽

Fuel Injection ◽

Combustion Process ◽

Weight Ratio ◽

Engine Performance ◽

Spark Ignition ◽

Performance Comparison ◽

Power Performance ◽

Test Rig ◽

Injection Methods

Abstract Spark ignition aeropiston engines have good prospects due to light weight and high power to weight ratio. Both gasoline and kerosene can be utilized on these engines by using either traditional port fuel injection (PFI) or the novel air-assisted fuel injection (A2FI). In this article, the effects of different fuels and injection methods on the performance of a four-cylinder opposed aeropiston engine were studied. The spray performance test rig and the engine performance test rig were established. First, the influence of different injection methods on engine performance were compared, which indicated that A2FI is superior to PFI in engine power and starting performance. Furthermore, the fuel performance comparison by using A2FI was conducted, which demonstrates that kerosene is inferior to gasoline in terms of spray characteristics and power performance. Finally, detailed working characteristics of A2FI system using kerosene were studied, which indicated that the stable and reliable operation of the spark-ignition operation can be realized and the kerosene's spark-ignition combustion process can be optimized similar to that of gasoline. Results shows that the use of kerosene combined with A2FI is the best technical way to achieve ideal working process of the spark ignition aeropiston engine.

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