Fast Automatic Frequency Calibrator Using an Adaptive Frequency Search Algorithm
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An adaptive frequency search algorithm (A-FSA) is presented that optimizes the number of clock counts for each frequency comparison cycle in a phase-locked loop based on the difference between the target frequency and output frequency. This reduces unnecessary clocking times and thus decreases total lock time compared to a binary frequency search algorithm. Two wideband PLLs were designed in 65-nm CMOS with one using A-FSA and the other using B-FSA, and the A-FSA PLL achieved at least twice as fast lock time under worst case conditions. The proposed architecture was analyzed for logic size, area, and power consumption using the Tanner tool.
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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.
Dx33746752
This document describes a novel fast locking digital phase locked loop (DPLL) that uses a flash algorithm approach. The DPLL operates in two stages - a coarse tuning stage using an array of frequency comparators to quickly generate a thermometer code, and a fine tuning stage similar to a conventional DPLL. The coarse tuning stage significantly reduces lock time compared to a conventional DPLL. The document discusses the design and simulation of the flash DPLL components, including novel frequency comparators, multiple charge pumps, and low pass filters to implement the coarse tuning stage. Simulation results demonstrated the flash DPLL achieves significantly faster lock times than a conventional DPLL.
An efficient approach for squared crest factor
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.
F1103043642
This document presents an optimized synchronous technique for a single-phase enhanced phase locked loop (EPLL). It compares the performance of a first-order adaptive notch filter (ANF) and a second-order ANF in the EPLL design. Simulation results show that under normal operating conditions and various fault scenarios, the second-order ANF-based PLL provides faster locking, less oscillation in the error signal, and lower integration error values compared to the first-order ANF design. The second-order ANF design demonstrates better immunity and accuracy in phase tracking.
Performance Comparison of Various Clock Gating Techniques
Clock signal have been a great source of power dissipation in synchronous circuits because of high
frequency and load. So , by using clock gating one can save power by reducing unnecessary switching activity
inside the gated module. Here four gating methods are discussed and their power dissipation is compared. The
most popular is synthesis-based, deriving clock enabling signals based on the logic of the underlying system. It
unfortunately leaves the majority of the clock pulses driving the flip flops (FFs) redundant. A data driven
method stops most of those and yields higher power savings, but its implementation is complex and application
dependent. A third method called auto gated FFs (AGFF) is simple but yields relatively small power savings.
Another novel method called Look Ahead Clock Gating (LACG) is presented, which combines all the three.It
avoids the tight timing constraints of AGFF and data driven by allotting a full clock cycle for the computation of
the enabling signals and their propagation.
Design of Low Power Sequential System Using Multi Bit FLIP-FLOP With Data Dri...
Power reduction plays a vital role in VLSI design .The Data driven clock gating is used for reduce power consumption in synchronous circuits .Common clock gating is used for power saving. However clock gating still leaves larger amount of redundant clock pulses. Multibit flip-flop is also used to reduce power consumption .Using of Multibit Flip-Flop method is to eliminate the total inverter number by sharing the inverters in the flip-flop .Combination of Multibit Flip-Flop with Data driven clock gating will increase the further power saving. Xilinx software tool and quatrus II for power analysis is used for implementing this proposed system.
IJIREEICE 84
This document presents a method for suppressing sidelobes in OFDM-based cognitive radio using a modified adaptive symbol transition technique with genetic algorithm. It discusses how OFDM signals suffer from high sidelobes causing interference, and how the adaptive symbol transition method can efficiently suppress sidelobes by adding an extension to each symbol. However, the algorithm for adaptive symbol transition is complex to implement. Therefore, the document proposes using a genetic algorithm to optimize the value of the extension added in the adaptive symbol transition method. Simulation results show the proposed genetic algorithm approach reduces interference power by around 20dB compared to the normal method, improving performance for the primary user.
40120140501014
This document summarizes an article from the International Journal of Electronics and Communication Engineering & Technology. The article focuses on a three-phase Clarke-maximum (Maximum p,q) trigonometrical PLL for grid connected power converters. It presents the block diagram and computer simulation model of the proposed PLL. The PLL uses Clarke and inverse Clarke transformations to extract the q and p components from the three-phase input signals. It then takes the maximum of these values to determine the error signal fed to the PI controller. This ensures there is only one equilibrium point and faster response when the initial phase difference exceeds 90 degrees compared to typical qPLL and pPLL implementations. Computer simulations validate the operation and performance of the proposed PLL structure.
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Iaetsd gmsk modulation implementation for gsm in dsp
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DESIGN OF A LOW POWER MULTIBAND CLOCK DISTRIBUTION CIRCUIT USING SINGLE PHASE...
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Performance Comparison of Various Clock Gating Techniques
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How to Manage Reception Report in Odoo 17
A business may deal with both sales and purchases occasionally. They buy things from vendors and then sell them to their customers. Such dealings can be confusing at times. Because multiple clients may inquire about the same product at the same time, after purchasing those products, customers must be assigned to them. Odoo has a tool called Reception Report that can be used to complete this assignment. By enabling this, a reception report comes automatically after confirming a receipt, from which we can assign products to orders.
Information and Communication Technology in Education
(๐๐๐ ๐๐๐) (๐๐๐ฌ๐ฌ๐จ๐ง 2)-๐๐ซ๐๐ฅ๐ข๐ฆ๐ฌ
๐๐ฑ๐ฉ๐ฅ๐๐ข๐ง ๐ญ๐ก๐ ๐๐๐ ๐ข๐ง ๐๐๐ฎ๐๐๐ญ๐ข๐จ๐ง:
Students will be able to explain the role and impact of Information and Communication Technology (ICT) in education. They will understand how ICT tools, such as computers, the internet, and educational software, enhance learning and teaching processes. By exploring various ICT applications, students will recognize how these technologies facilitate access to information, improve communication, support collaboration, and enable personalized learning experiences.
๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐ซ๐๐ฅ๐ข๐๐๐ฅ๐ ๐ฌ๐จ๐ฎ๐ซ๐๐๐ฌ ๐จ๐ง ๐ญ๐ก๐ ๐ข๐ง๐ญ๐๐ซ๐ง๐๐ญ:
-Students will be able to discuss what constitutes reliable sources on the internet. They will learn to identify key characteristics of trustworthy information, such as credibility, accuracy, and authority. By examining different types of online sources, students will develop skills to evaluate the reliability of websites and content, ensuring they can distinguish between reputable information and misinformation.
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