Area Versus Speed Trade-off Analysis of a WiMAX Deinterleaver Circuit Designijsrd.com
Trade-off is one of the main design parameters in the field of electronic circuit design. Whereas smaller electronics devices which use less hardware due to techniques like hardware multiplexing or due to smaller devices created due to techniques developed by nanotechnology and MEMS, are more appealing, a trade-off between area, power and speed is inevitable. This paper analyses the trade-off in the design of Wimax deinterleaver. The main aim is to reduce the hardware utilization in a deinterleaver but speed and power consumption are important parameters which cannot be overlooked.
Gate Diffusion Input Technology (Very Large Scale Integration)Ashwin Shroff
The aim of project is by using GDI technique the power consumption, delay, chip area and connection and parasitic capacitors is decreased. In this project, we are implementing the new T-flip flop using GDI technique for low power and high speed in order to achieve power delay product (PDP)
Low Power-Area Design of Full Adder Using Self Resetting Logic with GDI Techn...VLSICS Design
Various electronic devices such as mobile phones, DSPs,ALU etc., are designed by using VLSI (Very
Large Scale Integration) technology. In VLSI dynamic CMOS logic circuits are concentrating on the Area
,reducing the power consumption and increasing the Speed by reducing the delay. ALU (Arithmetic Logic
Circuits) are designed by using adder, subtractors, multiplier, divider, etc.Various adder circuits designs
have been proposed over last few years with different logic styles. To reduce the power consumption
several parameters are to be taken into account, such as feedthrough, leakage power single-event upsets,
charge sharing by parasitic components while connecting source and drain of CMOS transistors There are
situations in a logic that permit the use of circuits that can automatically precharge themselves (i.e., reset
themselves) after some prescribed delays. These circuits are hence called postcharge or self-resetting logic
which are widely used in dynamic logic circuits. Overall performance of various adder designs is
evaluated by using Tanner tool . The earlier and the proposed SRLGDI primitives are simulated using
Tanner EDA with BSIM 0.250 lm technology with supply voltage ranging from 0 V to 5 V in steps of 0.2 V.
On comparing the various SRLGDI logic adders, the proposed adder shows low power, delay and low
PDP among its counterparts.
Area Versus Speed Trade-off Analysis of a WiMAX Deinterleaver Circuit Designijsrd.com
Trade-off is one of the main design parameters in the field of electronic circuit design. Whereas smaller electronics devices which use less hardware due to techniques like hardware multiplexing or due to smaller devices created due to techniques developed by nanotechnology and MEMS, are more appealing, a trade-off between area, power and speed is inevitable. This paper analyses the trade-off in the design of Wimax deinterleaver. The main aim is to reduce the hardware utilization in a deinterleaver but speed and power consumption are important parameters which cannot be overlooked.
Gate Diffusion Input Technology (Very Large Scale Integration)Ashwin Shroff
The aim of project is by using GDI technique the power consumption, delay, chip area and connection and parasitic capacitors is decreased. In this project, we are implementing the new T-flip flop using GDI technique for low power and high speed in order to achieve power delay product (PDP)
Low Power-Area Design of Full Adder Using Self Resetting Logic with GDI Techn...VLSICS Design
Various electronic devices such as mobile phones, DSPs,ALU etc., are designed by using VLSI (Very
Large Scale Integration) technology. In VLSI dynamic CMOS logic circuits are concentrating on the Area
,reducing the power consumption and increasing the Speed by reducing the delay. ALU (Arithmetic Logic
Circuits) are designed by using adder, subtractors, multiplier, divider, etc.Various adder circuits designs
have been proposed over last few years with different logic styles. To reduce the power consumption
several parameters are to be taken into account, such as feedthrough, leakage power single-event upsets,
charge sharing by parasitic components while connecting source and drain of CMOS transistors There are
situations in a logic that permit the use of circuits that can automatically precharge themselves (i.e., reset
themselves) after some prescribed delays. These circuits are hence called postcharge or self-resetting logic
which are widely used in dynamic logic circuits. Overall performance of various adder designs is
evaluated by using Tanner tool . The earlier and the proposed SRLGDI primitives are simulated using
Tanner EDA with BSIM 0.250 lm technology with supply voltage ranging from 0 V to 5 V in steps of 0.2 V.
On comparing the various SRLGDI logic adders, the proposed adder shows low power, delay and low
PDP among its counterparts.
Addition is a fundamental arithmetic operation that is broadly used in many VLSI systems, such as application-specific digital signal processing (DSP) architectures and microprocessors. This addition module is also the core of other arithmetic operations such as subtraction, multiplication, division and address generation. The prime objective of this project is to design a full-adder having low-power consumption and low propagation delay which may result in the efficient implementation of modern digital systems. This model is referred as “hybrid” because of the combination of two different design logic styles namely CMOS logic and pass transistor logic. Performance parameters such as power, delay and hence energy were compared with the existing designs such as complementary CMOS logic full adder. In the existing hybrid systems, over 28 transistors were used. While the optimized hybrid full adder circuit reduces this count to 8 transistors, it still obtains better energy efficiency. Further the proper working of proposed full adder is verified by applying it in a Ripple carry Adder circuit.
Design a Low Power High Speed Full Adder Using AVL Technique Based on CMOS Na...IOSR Journals
Abstract: Power and delay optimization is a very crucial issue in low voltage applications. In this paper, we present a design of Full Adder circuit using AVL techniques for low power operation. The approach for the design is based on XOR/XNOR & Transmission gate for single bit as hybrid design .By using this approach Full Adder is being designed using 12 transistors. We can reduce the value of total power dissipation by applying the AVLG (adaptive voltage level at ground) technology in which the ground potential is raised and AVLS (adaptive voltage level at supply) in which supply potential is increased. The main aim of the design is to investigate the power, Propagation Delay and Power delay Product for low voltage Full Adder for the proposed design style. The simulation results show that there is a significant reduction in power consumption for this proposed cell with the AVL technique. The circuit is designed using 65 nanometer CMOS technology and simulated using MicroWind and DSCH Ver. 3.1 Keywords: Full Adder, AVL Techniques, Low Power, VLSI, High Performance
A Two-stages Microstrip Power Amplifier for WiMAX ApplicationsTELKOMNIKA JOURNAL
Amplification is one of the most basic and prevalent microwave analog circuit functions. Wherefore
power amplifiers are the most important parts of electronic circuits. This is why the designing of power
amplifiers is crucial in analog circuit designing. The intent of this work is to present an analysis and design
of a microwave broadband power amplifier by using two stages topology. A two stages power amplifier using
a distributed matching network for WiMAX applications is based on ATF-21170 (GaAs FET). The
configuration aims to achieve high power gain amplifier with low return loss over a broad bandwidth. The
proposed BPA is designed with a planar structure on an epoxy (FR4) substrate. The planar structure is also
utilized for getting the good matching condition. The advanced design system (ADS) software is used for
design, simulation, and optimization the proposed amplifier. The complete amplifier achieves an excellent
power gain; is changed between 28.5 and 20 dB with an output power of 12.45dBm at 1dB compression
point. For the input reflection coefficient (S11) is varied between -20 and -42 dB. While the output reflection
coefficient (S22) is varied between -10 dB and -49 dB over the wide frequency band of 3.2-3.8 GHz.
PERFORMANCE OF DIFFERENT CMOS LOGIC STYLES FOR LOW POWER AND HIGH SPEED VLSICS Design
Designing high-speed low-power circuits with CMOS technology has been a major research problem for many years. Several logic families have been proposed and used to improve circuit performance beyond that of conventional static CMOS family. Fast circuit families are becoming attractive in deep submicron technologies since the performance benefits obtained from process scaling are decreasing as feature size decreases. This paper presents CMOS differential circuit families such as Dual rail domino logic and pseudo Nmos logic their delay and power variations in terms of adder design and logical design. Domino CMOS has become the prevailing logic family for high performance CMOS applications and it is extensively used in most state-of-the-art processors due to its high speed capabilities. The drawback of domino CMOS is that it provides only non-inverting functions because of its monotonic nature. Dual-Rail Domino logic, (also known as clocked Cascade voltage switch logic where both polarities of the output are generated, provides a robust solution to this problem.
High performance low leakage power full subtractor circuit design using rate ...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Energy efficient and high speed domino logic circuitsIJERA Editor
Domino CMOS circuit family finds a wide variety of application in microprocessors due to low device count and high speed.In this paper, various conventional and proposed designs for low leakage and high speed wide fan-in domino circuits are reviewed. The techniques used in the paper reduces the total power dissipation and delay by 25% and 58% respectively as compared to the conventional footed domino logic circuit. Simulations are performed on tanner tool at 65nm technology for 16 input OR gate.
DESIGN AND PERFORMANCE ANALYSIS OF HYBRID ADDERS FOR HIGH SPEED ARITHMETIC CI...VLSICS Design
Adder cells using Gate Diffusion Technique (GDI) & PTL-GDI technique are described in this paper. GDI technique allows reducing power consumption, propagation delay and low PDP (power delay product) whereas Pass Transistor Logic (PTL) reduces the count of transistors used to make different logic gates, by eliminating redundant transistors. Performance comparison with various Hybrid Adder is been presented. In this paper, we propose two new designs based on GDI & PTL techniques, which is found to be much more power efficient in comparison with existing design technique. Only 10 transistors are used to implement the SUM & CARRY function for both the designs. The SUM and CARRY cell are implemented in a cascaded way i.e. firstly the XOR cell is implemented and then using XOR as input SUM as well as CARRY cell is implemented. For Proposed GDI adder the SUM as well as CARRY cell is designed using GDI technique. On the other hand in Proposed PTL-GDI adder the SUM cell is constructed using PTL technique and the CARRY cell is designed using GDI technique. The advantages of both the designs are discussed. The significance of these designs is substantiated by the simulation results obtained from Cadence Virtuoso 180nm environment.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This paper presents a recursive designing approach for high energy efficient carry select adder (CSA). Nowadays, the portable equipment’s like mobile phones and laptops have higher demands in the market. So, the designers must focus greater attention while designing such devices. Which means that have the devices must have lesser power consumption, low cost and have a better performance. The customers mainly focus on the equipment’s which have lesser power consumption, low cost and better performance. As we all know that the adders are the basic building block of microprocessors. The performance of the adders greatly influences the performance of those processors. The carry select adder is most suitable among other adders which have fast addition operation at low cost. The carry select adder (CSA) consists of chain full adders (FAs) and multiplexers. Here a carry select adder is designed with four FAs and four multiplexers. The proposed structure is assessed by the power consumption of the carry select adder using a 32-nm static CMOS technology for a wide range of supply voltages. The simulation results are obtained using Tanner EDA which reveals that the carry select adder has low power consumption.
Comparative Performance Analysis of Low Power Full Adder Design in Different ...ijcisjournal
This paper gives the comparison of performance of full adder design in terms of area, power and delay in
different logic styles. Full adder design achieves low power using the Transmission Gate logic compared to
all other topologies such as Basic CMOS, Pass Transistor and GDI techniques but it make use of more
number of transistors compared to GDI. GDI occupies less area compared to all other logic design styles.
This paper presents the simulated outcome using Tanner tools and also H-Spice tool which shows power
and speed comparison of different full adder designs. All simulations have been performed in 90nm, 45nm
and 22nm scaling parameters using Predictive Technology Models in H-Spice tool.
Efficient implementation of full adder for power analysis in cmos technologyIJARIIT
In recent days, the real-time application and fast arithmetic operations require highly efficient arithmetic hardware
architecture to improve the system performances. The adder plays a vital role in digital circuits, the earlier hardware
architecture using conventional CMOS and transmission logic gate based full adder design. Moreover, the techniques using
more number of transistors and consume larger power and delay so we proposed the techniques pass-transistor logic and
transmission gate based hybrid pass logic. The hybrid technique is used to reduce the number of the transistor, so the delay
and power consumption will be reduced when compared with the earlier techniques. The proposed technique design was
implemented using 16 transistors in 180nm CMOS technology and it consumes 8.2075nW power and the delay reduced to
5.0146ns.
A high speed dynamic ripple carry addereSAT Journals
Abstract Adder, which is one of the basic building blocks of a processor affect the performance of the processor. There are many adder architectures each of them have their own advantage. Ripple Carry Adder (RCA) architecture occupies the minimum area among the other architectures with lesser power dissipation. RCA experiences more delay due to its carry propagation in critical path; apart from the delay it also experiences glitches. Constant delay (CD) logic solves both the delay problems and glitch related problems. CD logic, due to its pre-evaluated characteristics delivers high speed but due its bulkier nature it is used only in the critical path. In this paper two new techniques are presented which modifies the conventional timing block (requires ten transistors) in CD logic and two new timing blocks one with eight transistors and other with nine transistors are developed. The CD logic with the two new timing block is used in critical path of RCA to achieve higher speed performance with lesser area compared to conventional CD logic. The CD logic with 9-transistor timing block achieves 70% and 39% delay reduction compared to Static and Domino logics. It also achieves 21% and 5% reduction in power dissipation and delay. The 8-transistor version also achieves reduction of delay by 65% and 29% compared to Static and dynamic logic. The two versions of timing blocks have their own advantages where 9-transistor version provides high speed and 8- transistor version provides lesser power dissipation. Simulations are carried out in 130 nm at 1V power supply using mentor graphics tools. Key Words: Critical Path, Feed Through Logic, Constant Delay logic, Pre-evaluated logic, and Timing block.
Addition is a fundamental arithmetic operation that is broadly used in many VLSI systems, such as application-specific digital signal processing (DSP) architectures and microprocessors. This addition module is also the core of other arithmetic operations such as subtraction, multiplication, division and address generation. The prime objective of this project is to design a full-adder having low-power consumption and low propagation delay which may result in the efficient implementation of modern digital systems. This model is referred as “hybrid” because of the combination of two different design logic styles namely CMOS logic and pass transistor logic. Performance parameters such as power, delay and hence energy were compared with the existing designs such as complementary CMOS logic full adder. In the existing hybrid systems, over 28 transistors were used. While the optimized hybrid full adder circuit reduces this count to 8 transistors, it still obtains better energy efficiency. Further the proper working of proposed full adder is verified by applying it in a Ripple carry Adder circuit.
Design a Low Power High Speed Full Adder Using AVL Technique Based on CMOS Na...IOSR Journals
Abstract: Power and delay optimization is a very crucial issue in low voltage applications. In this paper, we present a design of Full Adder circuit using AVL techniques for low power operation. The approach for the design is based on XOR/XNOR & Transmission gate for single bit as hybrid design .By using this approach Full Adder is being designed using 12 transistors. We can reduce the value of total power dissipation by applying the AVLG (adaptive voltage level at ground) technology in which the ground potential is raised and AVLS (adaptive voltage level at supply) in which supply potential is increased. The main aim of the design is to investigate the power, Propagation Delay and Power delay Product for low voltage Full Adder for the proposed design style. The simulation results show that there is a significant reduction in power consumption for this proposed cell with the AVL technique. The circuit is designed using 65 nanometer CMOS technology and simulated using MicroWind and DSCH Ver. 3.1 Keywords: Full Adder, AVL Techniques, Low Power, VLSI, High Performance
A Two-stages Microstrip Power Amplifier for WiMAX ApplicationsTELKOMNIKA JOURNAL
Amplification is one of the most basic and prevalent microwave analog circuit functions. Wherefore
power amplifiers are the most important parts of electronic circuits. This is why the designing of power
amplifiers is crucial in analog circuit designing. The intent of this work is to present an analysis and design
of a microwave broadband power amplifier by using two stages topology. A two stages power amplifier using
a distributed matching network for WiMAX applications is based on ATF-21170 (GaAs FET). The
configuration aims to achieve high power gain amplifier with low return loss over a broad bandwidth. The
proposed BPA is designed with a planar structure on an epoxy (FR4) substrate. The planar structure is also
utilized for getting the good matching condition. The advanced design system (ADS) software is used for
design, simulation, and optimization the proposed amplifier. The complete amplifier achieves an excellent
power gain; is changed between 28.5 and 20 dB with an output power of 12.45dBm at 1dB compression
point. For the input reflection coefficient (S11) is varied between -20 and -42 dB. While the output reflection
coefficient (S22) is varied between -10 dB and -49 dB over the wide frequency band of 3.2-3.8 GHz.
PERFORMANCE OF DIFFERENT CMOS LOGIC STYLES FOR LOW POWER AND HIGH SPEED VLSICS Design
Designing high-speed low-power circuits with CMOS technology has been a major research problem for many years. Several logic families have been proposed and used to improve circuit performance beyond that of conventional static CMOS family. Fast circuit families are becoming attractive in deep submicron technologies since the performance benefits obtained from process scaling are decreasing as feature size decreases. This paper presents CMOS differential circuit families such as Dual rail domino logic and pseudo Nmos logic their delay and power variations in terms of adder design and logical design. Domino CMOS has become the prevailing logic family for high performance CMOS applications and it is extensively used in most state-of-the-art processors due to its high speed capabilities. The drawback of domino CMOS is that it provides only non-inverting functions because of its monotonic nature. Dual-Rail Domino logic, (also known as clocked Cascade voltage switch logic where both polarities of the output are generated, provides a robust solution to this problem.
High performance low leakage power full subtractor circuit design using rate ...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Energy efficient and high speed domino logic circuitsIJERA Editor
Domino CMOS circuit family finds a wide variety of application in microprocessors due to low device count and high speed.In this paper, various conventional and proposed designs for low leakage and high speed wide fan-in domino circuits are reviewed. The techniques used in the paper reduces the total power dissipation and delay by 25% and 58% respectively as compared to the conventional footed domino logic circuit. Simulations are performed on tanner tool at 65nm technology for 16 input OR gate.
DESIGN AND PERFORMANCE ANALYSIS OF HYBRID ADDERS FOR HIGH SPEED ARITHMETIC CI...VLSICS Design
Adder cells using Gate Diffusion Technique (GDI) & PTL-GDI technique are described in this paper. GDI technique allows reducing power consumption, propagation delay and low PDP (power delay product) whereas Pass Transistor Logic (PTL) reduces the count of transistors used to make different logic gates, by eliminating redundant transistors. Performance comparison with various Hybrid Adder is been presented. In this paper, we propose two new designs based on GDI & PTL techniques, which is found to be much more power efficient in comparison with existing design technique. Only 10 transistors are used to implement the SUM & CARRY function for both the designs. The SUM and CARRY cell are implemented in a cascaded way i.e. firstly the XOR cell is implemented and then using XOR as input SUM as well as CARRY cell is implemented. For Proposed GDI adder the SUM as well as CARRY cell is designed using GDI technique. On the other hand in Proposed PTL-GDI adder the SUM cell is constructed using PTL technique and the CARRY cell is designed using GDI technique. The advantages of both the designs are discussed. The significance of these designs is substantiated by the simulation results obtained from Cadence Virtuoso 180nm environment.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This paper presents a recursive designing approach for high energy efficient carry select adder (CSA). Nowadays, the portable equipment’s like mobile phones and laptops have higher demands in the market. So, the designers must focus greater attention while designing such devices. Which means that have the devices must have lesser power consumption, low cost and have a better performance. The customers mainly focus on the equipment’s which have lesser power consumption, low cost and better performance. As we all know that the adders are the basic building block of microprocessors. The performance of the adders greatly influences the performance of those processors. The carry select adder is most suitable among other adders which have fast addition operation at low cost. The carry select adder (CSA) consists of chain full adders (FAs) and multiplexers. Here a carry select adder is designed with four FAs and four multiplexers. The proposed structure is assessed by the power consumption of the carry select adder using a 32-nm static CMOS technology for a wide range of supply voltages. The simulation results are obtained using Tanner EDA which reveals that the carry select adder has low power consumption.
Comparative Performance Analysis of Low Power Full Adder Design in Different ...ijcisjournal
This paper gives the comparison of performance of full adder design in terms of area, power and delay in
different logic styles. Full adder design achieves low power using the Transmission Gate logic compared to
all other topologies such as Basic CMOS, Pass Transistor and GDI techniques but it make use of more
number of transistors compared to GDI. GDI occupies less area compared to all other logic design styles.
This paper presents the simulated outcome using Tanner tools and also H-Spice tool which shows power
and speed comparison of different full adder designs. All simulations have been performed in 90nm, 45nm
and 22nm scaling parameters using Predictive Technology Models in H-Spice tool.
Efficient implementation of full adder for power analysis in cmos technologyIJARIIT
In recent days, the real-time application and fast arithmetic operations require highly efficient arithmetic hardware
architecture to improve the system performances. The adder plays a vital role in digital circuits, the earlier hardware
architecture using conventional CMOS and transmission logic gate based full adder design. Moreover, the techniques using
more number of transistors and consume larger power and delay so we proposed the techniques pass-transistor logic and
transmission gate based hybrid pass logic. The hybrid technique is used to reduce the number of the transistor, so the delay
and power consumption will be reduced when compared with the earlier techniques. The proposed technique design was
implemented using 16 transistors in 180nm CMOS technology and it consumes 8.2075nW power and the delay reduced to
5.0146ns.
A high speed dynamic ripple carry addereSAT Journals
Abstract Adder, which is one of the basic building blocks of a processor affect the performance of the processor. There are many adder architectures each of them have their own advantage. Ripple Carry Adder (RCA) architecture occupies the minimum area among the other architectures with lesser power dissipation. RCA experiences more delay due to its carry propagation in critical path; apart from the delay it also experiences glitches. Constant delay (CD) logic solves both the delay problems and glitch related problems. CD logic, due to its pre-evaluated characteristics delivers high speed but due its bulkier nature it is used only in the critical path. In this paper two new techniques are presented which modifies the conventional timing block (requires ten transistors) in CD logic and two new timing blocks one with eight transistors and other with nine transistors are developed. The CD logic with the two new timing block is used in critical path of RCA to achieve higher speed performance with lesser area compared to conventional CD logic. The CD logic with 9-transistor timing block achieves 70% and 39% delay reduction compared to Static and Domino logics. It also achieves 21% and 5% reduction in power dissipation and delay. The 8-transistor version also achieves reduction of delay by 65% and 29% compared to Static and dynamic logic. The two versions of timing blocks have their own advantages where 9-transistor version provides high speed and 8- transistor version provides lesser power dissipation. Simulations are carried out in 130 nm at 1V power supply using mentor graphics tools. Key Words: Critical Path, Feed Through Logic, Constant Delay logic, Pre-evaluated logic, and Timing block.
Analysis of Power Dissipation & Low Power VLSI Chip DesignEditor IJMTER
Low power requirement has become a principal motto in today’s world of electronics
industries. Power dissipation has becoming an important consideration as performance and area for
VLSI Chip design. With reducing the chip size, reduced power consumption and power management
on chip are the key challenges due to increased complexity. Low power chip requirement in the
VLSI industry is main considerable field due to the reduction of chip dimension day by day and
environmental factors. For many designs, optimization of power is important as timing due to the
need to reduce package cost and extended battery life. This paper present various techniques to
reduce the power requirement in various stages of CMOS designing i.e. Dynamic Power
Suppression, Adiabatic Circuits, Logic Design for Low Power, Reducing Glitches, Logic Level
Power Optimization, Standby Mode Leakage Suppression, Variable Body Biasing, Sleep Transistors,
Dynamic Threshold MOS, Short Circuit Power Suppression.
Implementation and analysis of power reduction in 2 to 4 decoder design using...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
In today’s modern electronics industries energy or power efficiency is most important feature to increase the speed, portability, reliability, popularity and efficiency of electronic products. Reduction in power consumption or low power requirement for a system adds features of low cost, high speed, more efficiency and reliability. CMOS technology is a popular name in the field of low power systems. In the field of CMOS technology various methods are used to make the systems more power efficient like, use of Sleepy transistors, Stack method in which transistor length or width is increased to get reduction in leakage power, use of pre-computation technique with the use of BDD (Binary Decision Diagram), use of SRAM (Static Random Access Memory) for high speed operations. In this paper we survey low power systems in which various techniques are used to reduce the power consumption in different circuit areas of the system to get more power efficient and cost effective electronic systems.
FORCED STACK SLEEP TRANSISTOR (FORTRAN): A NEW LEAKAGE CURRENT REDUCTION APPR...VIT-AP University
Reduction in leakage current has become a significant concern in nanotechnology-based low-power, low-voltage, and high-performance VLSI applications. This research article discusses a new low-power circuit design the approach of FORTRAN (FORced stack sleep TRANsistor), which decreases the leakage power efficiency in the CMOS-based circuit outline in VLSI domain. FORTRAN approach reduces leakage current in both active as well as standby modes of operation. Furthermore, it is not time intensive when the circuit goes from active mode to standby mode and vice-versa. To validate the proposed design approach, experiments are conducted in the Tanner EDA tool of mentor graphics bundle on projected circuit designs for the full adder, a chain of 4-inverters, and 4-bit multiplier designs utilizing 180nm, 130nm, and 90nm TSMC technology node. The outcomes obtained show the result of a 95-98% vital reduction in leakage power as well as a 15-20% reduction in dynamic power with a minor increase in delay. The result outcomes are compared for accuracy with the notable design approaches that are accessible for both active and standby modes of operation.
Current Comparison Domino based CHSK Domino Logic Technique for Rapid Progres...IJECEIAES
The proposed domino logic is developed with the combination of Current Comparison Domino (CCD) logic and Conditional High Speed Keeper (CHSK) domino logic. In order to improve the performance metrics like power, delay and noise immunity, the redesign of CHSK is proposed with the CCD. The performance improvement is based on the parasitic capacitance, which reduces on the dynamic node for robust and rapid process of the circuit. The proposed domino logic is designed with keeper and without keeper to measure the performance metrics of the circuit. The outcomes of the proposed domino logic are better when compared to the existing domino logic circuits. The simulation of the proposed CHSK based on the CCD logic circuit is carried out in Cadence Virtuoso tool.
Energy Efficient Design of Multiplexer Using Adiabatic logicIJEEE
the increasing prominence of portable systems and the need to limit the power consumption in very high density VLSI chips have led to rapid and innovative developments in low power design during the recent years. The CMOS technology provides circuits with very low static power dissipation, during the switching operation currents are generated, due to the discharge of load capacitances that cause power dissipation increasing with the clock frequency. The adiabatic technique prevents such losses, the charge does not flow from the supply voltage to the load capacitance and then to ground, but it flows back to a trapezoidal or sinusoidal supply voltage and can be reused.In this paper a low 2:1 multiplexer is designed using positive feedback adiabatic logic. The design is simulated at .12µm technology using Microwind 3.1. Simulated results shows that proposed design saves 38% energy as compare to conventional CMOS design.
Low Power and Area Efficient Multiplier Layout using Transmission GateIJEEE
This paper proposes the design and implementation of a 2-bit multiplier using fully automatic design and semi- custom design. Any digital signal processor has adder and multiplier in its core unit. Low power and high speed mac units are in high demand and therefore make a significant place in today’s vlsi environment. Power consumption of cmos circuits is a major concern in vlsi design. The proposed design is made using transmission gate logicwhich helped in using less number of cmos. The multiplier circuit is first simulated using avlsi cad tool and thus the layout was generated. The proposed circuit is simulated by using 90nm cmos technology with supply voltage of 1.2v. It is found that semi-custom based design produced better results in terms of power dissipation and area.
The paper presents a low Power consumption plays a vital role in the present day VLSI technology. Power consumption of an electronic device can be reduced by adopt changed design styles. Multipliers play a most important role in high concert systems. This project focus on a novel energy efficient technique called adiabatic logic which is based on energy renewal principle and power is compared by designing a multiplier. CMOS technology plays a main role in designing low power consuming devices, compared to different logic family CMOS has less power dissipation. Adiabatic logic method is assumed to be an attractive solution for low power electronic applications. By using Adiabatic techniques energy dissipation in PMOS network can be minimized and selection of energy stored at load capacitance can be recycled instead of dissipated as heat. Tanner EDA tools are used for simulation.
Sub-Threshold Leakage Current Reduction Techniques In VLSI Circuits -A SurveyIJERA Editor
There is an increasing demand for portable devices powered up by battery, this led the manufacturers of
semiconductor technology to scale down the feature size which results in reduction in threshold voltage and
enables the complex functionality on a single chip. By scaling down the feature size the dynamic power
dissipation has no effect but the static power dissipation has become equal or more than that of Dynamic power
dissipation. So in recent CMOS technologies static power dissipation i.e. power dissipation due to leakage
current has become a challenging area for VLSI chip designers. In order to prolong the battery life and maintain
reliability of circuit, leakage current reduction is the primary goal. A basic overview of techniques used for
reduction of sub-threshold leakages is discussed in this paper. Based on the surveyed techniques, one would be
able to choose required and apt leakage reduction technique.
Similar to IRJET - Low Power Design for Fast Full Adder (20)
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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