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phase locked loop structure

Receiver for QAM Modulation

Receiver for QAM Modulation

... Costa’s feedforward circuit is simple but requires superheterodyne structure to reduce the higher frequency component. This forces us to look for phase locked loop structure. ...

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Energy Efficient and High Speed Charge-Pump Phase Locked Loop

Energy Efficient and High Speed Charge-Pump Phase Locked Loop

... Ring oscillator can be implemented with odd number of not gates whose output oscillates between two voltage levels. The inverters are attached in a chain structure and the output of the last inverter is feds back ...

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A Low Power VLSI Design of an All Digital Phase Locked Loop

A Low Power VLSI Design of an All Digital Phase Locked Loop

... The main limitation of the ÷N Counter DCO is that it does not offer a jitter design criterion. That is, choice of a predefined jitter and tuning the ADPLL design based on desirable precision requirements is not possible ...

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Design and Implementation of Modified Charge Pump for Phase Locked Loop

Design and Implementation of Modified Charge Pump for Phase Locked Loop

... closed loop system that locks the phase of an output signal to an input reference ...zero phase difference between two signals. The components of PLL are the Phase Frequency Detector (PFD), ...

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Design and Analysis of Novel Charge Pump Architecture for Phase Locked Loop

Design and Analysis of Novel Charge Pump Architecture for Phase Locked Loop

... voltage phase locked loop (PLL), flash Memories & DRAM’s smart power, switched capacitor circuits, non-volatile memories, operational amplifiers, voltage regulators, SRAMs, LCD drivers, ...

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DDS Based Phase Locked Loop

DDS Based Phase Locked Loop

... the phase and frequency, when the grid voltage is unbalanced and/or ...PLL structure has been proposed in some recent ...basic structure of ...in phase, with an input ...

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Implementation and Analysis of Signal Tracking Loops for Software Defined GPS Receiver

Implementation and Analysis of Signal Tracking Loops for Software Defined GPS Receiver

... of phase error between carrier of the incoming signal and local carrier wave, carrier tracking loop or PLL is ...Costas loop is used instead of simple PLL because it can still keep track the ...

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A Digital Phase Locked Loop Speed Control of Three Phase Induction Motor Drive: Performances Analysis

A Digital Phase Locked Loop Speed Control of Three Phase Induction Motor Drive: Performances Analysis

... open loop speed varia- tion of the drive motor is ...closed loop controllers for the IM rotor ...speed loop [1,2]. They have a simple structure and can offer a satis- factory performance for a ...

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Title: Analysis and Design of a Three-Phase PLL Structure

Title: Analysis and Design of a Three-Phase PLL Structure

... A phase-locked loop or phase lock loop (PLL) is just a control system that generates an output signal whose phase relates to the phase of an input ...a phase ...

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An Improved Balanced Optical Phase-Locked Loop Incorporating an Electro-Optic Phase Modulator

An Improved Balanced Optical Phase-Locked Loop Incorporating an Electro-Optic Phase Modulator

... optical phase-locked loop (OPLL) has been investigated through simulation experiment, considering the photo-detector shot noise, laser phase noise and loop propagation delay into ...

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A Review of Phase Locked Loop

A Review of Phase Locked Loop

... For phase frequency detector, a different class of digital filters called sequential filters are employed [4]. An example of sequential filter is depicted in figure 7. The N before M filter operates as follows. Up ...

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Design of Single Phase SiC Bidirectional DC-AC Converter with Low-Cost PLL for Power Factor Correction

Design of Single Phase SiC Bidirectional DC-AC Converter with Low-Cost PLL for Power Factor Correction

... factor with a brief description of inductor design, LCL filter and phase locked loop theory for grid 159. synchronization[r] ...

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A THEORITICAL FRAMEWORK OF PHASE-LOCKED LOOP AND ITS OPERATIONS IN ANALOG COMMUNION

A THEORITICAL FRAMEWORK OF PHASE-LOCKED LOOP AND ITS OPERATIONS IN ANALOG COMMUNION

... The phase-locked loop (PLL) is the most critical procedure for era of multiplexing of message ...the phase-frequency domain are justified using the averaging method by ...

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ANALYTICAL STUDY OF ANALOG PHASE-LOCKED LOOP IN MESSAGE SIGNALS TRANSMISSION

ANALYTICAL STUDY OF ANALOG PHASE-LOCKED LOOP IN MESSAGE SIGNALS TRANSMISSION

... Finally, with data in digital frame, and the accessibility of adequately quick handling, it is likewise conceivable to create PLLs in the product space. The PLL work is performed by programming and keeps running on a ...

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Simulation of Analog Phase-locked Loop for Frequency Hopping Application

Simulation of Analog Phase-locked Loop for Frequency Hopping Application

... analog phase-locked loop for frequency hopping spread spectrum based applications such as ...analog phase-locked loop, consisting of multiplier, loop filter, voltage ...

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Phase Locked Loop using VLSI Technology for Wireless Communication

Phase Locked Loop using VLSI Technology for Wireless Communication

... a phase detector, a loop filter and a high performance voltage controlled oscillator ...of phase locked loop with low power consumption using VLSI ...

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Design of 600-800 MHz Programmable Phase Locked Loop

Design of 600-800 MHz Programmable Phase Locked Loop

... Abstract: In this paper – emphasis is made on the design and architecture of the Programmable PLL. The frequency range of working of the Programmable PLL is 600-8000MHz with settling times 9, 10, 13 and 20 uSec for the ...

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A Design of PLL with a Process-Immune Locking-in Monitor and Reduce Jitter

A Design of PLL with a Process-Immune Locking-in Monitor and Reduce Jitter

... A digitally controlled adaptivePLL, which utilizes digital TDC and BCU to accomplish the lockedinstate detection with a bandwidth control algorithm. The algorithmuses a fixed phase threshold with a ...

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Volume 3, Issue 3, March 2014 Page 528

Volume 3, Issue 3, March 2014 Page 528

... A phase locked loop is divided into two architectures namely, an integer-N Phase Locked Loop and a fractional-N –Phase Locked ...the phase noise because of ...

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Multi Order Intermittent Chaotic Synchronization of Closed Phase Locked Loop

Multi Order Intermittent Chaotic Synchronization of Closed Phase Locked Loop

... The closed phase locked loop model is sketched in the block diagram shown in Figure 5. This model will be investigated for chaotic synchronous pair attrac- tors. Our model consists of a multi order ...

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