Research on the Third-Order Software Phase Locked Loop for Carrier Tracking

2013 ◽  
Vol 756-759 ◽  
pp. 2192-2196
Author(s):  
Lan Ying Zhang ◽  
Hai Yang Liu ◽  
Hong Yin Du
Keyword(s):  
Frequency Analysis ◽  
Mathematic Model ◽  
Phase Locked Loop ◽  
Third Order ◽  
Loop Filter ◽  
The Third ◽  
Management Efficiency ◽  
Simulation Results ◽  
Variable Data

The mathematic model of third-order software phase locked loop formed by three-parameter loop filter is analyzed and designed. Then, in order to solve the problem of redundancy frequency analysis bandwidth when carrier tracking, a variable data ratio software phase locked loop is studied. Finally, the method is simulated and analyzed. The simulation results demonstrate that the software phase locked loop with variable data ratio can effectively reduce the operation capacity and improve the management efficiency of the software phase locked loop.

scholarly journals A 4-4.8GHz Adaptive Bandwidth, Adaptive Jitter Phase Locked Loop

2017 ◽  
Vol 7 (2) ◽  
pp. 1473-1477 ◽  
Author(s):  
H. E. Taheri
Keyword(s):  
Pump Current ◽  
Phase Locked Loop ◽  
Cmos Technology ◽  
Reference Frequency ◽  
Monitor Unit ◽  
Loop Filter ◽  
Loop Bandwidth ◽  
Simulation Results ◽  
Adaptive Bandwidth ◽  
Low Phase Noise

A low power, low phase noise adaptive bandwidth phase locked loop is presented in this paper. The proposed structure benefits from a novel lock status monitor unit (LSMU) that determines loop operation and loop bandwidth. The loop filter resistance and charge pump current are inversely proportional and bandwidth to reference frequency is maintained fixed. This structure is simulated in 0.18 μm CMOS technology and simulation results are presented.

scholarly journals The Light Curves of Double-Mode Cepheids: The CO Aur Case

1998 ◽  
Vol 185 ◽  
pp. 389-390
Author(s):  
E. Poretti ◽  
I. Pardo
Keyword(s):  
Frequency Analysis ◽  
Fourth Order ◽  
A Priori ◽  
Cross Coupling ◽  
Second Order ◽  
Light Curves ◽  
Third Order ◽  
The Third ◽  
Coupling Terms ◽  
Phase Differences

In two recent papers (Pardo & Poretti 1997; Poretti & Pardo 1997) we analyzed all the available photometry of galactic double-mode Cepheids (DMCs) with the aim of detecting in each case the importance of the harmonics and of the cross coupling terms. We found that no a priori fit can be reliably applied to the measurements of a DMC, but a careful frequency analysis must be done to evaluate the importance of each term. As a further application of this technique, we obtained very precise indications about the properties of the Fourier parameters. When discussing the generalized phase differences Gi,j we demonstrated that plotting them as a function of the order |i|+|j|, there are well-defined regions where they are confined: the second order terms have π < Gi,j < 3π/2; the third order terms have π/2 < Gi,j < π; the fourth order terms cluster around 2π.

scholarly journals Design of the Deadbeat Controller with Limited Output

1970 ◽  
Vol 110 (4) ◽  
pp. 93-96
Author(s):  
L. Balasevicius ◽  
G. Dervinis
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Polynomial Coefficient ◽  
System Response ◽  
Third Order ◽  
The Third ◽  
The Family ◽  
Limited Output ◽  
One Step ◽  
Simulation Results

There is presented a method for finding the parameters of the deadbeat controller in Matlab environment. The method is based on the introduction of an additional polynomial into the transfer function of the controller. The method for determining the additional polynomial coefficient of a deadbeat controller is based on creating the family of the coefficient curves and defining the permissible selection area. The method was tested by using simulations in Matlab environment and realizing the deadbeat control system for the third order object in the PLC. Simulation results in Matlab show that even though the control increases by one-step, the settling time of the system response can be lower than that of the deadbeat controller without any modifications. Based on the obtained results it can be concluded that the results confirm the idea of defining the parameters of the transfer function of a deadbeat controller with a limited output. Ill. 9, bibl. 3 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.296

MEMRISTOR MODEL AND ITS APPLICATION FOR CHAOS GENERATION

2012 ◽  
Vol 22 (08) ◽  
pp. 1250205 ◽  
Author(s):  
LIDAN WANG ◽  
EMMANUEL DRAKAKIS ◽  
SHUKAI DUAN ◽  
PENGFEI HE ◽  
XIAOFENG LIAO
Keyword(s):  
Mathematical Model ◽  
Chaotic System ◽  
Initial Conditions ◽  
Third Order ◽  
Nonlinear Part ◽  
The Third ◽  
Simulation Results ◽  
Application Fields ◽  
Model C ◽  
The Mathematical Model

This paper contributes to the understanding of memristor operation and its possible application fields through: (a) derivation of a complete mathematical model for the HP memristor which takes into consideration the inter-dependence between memristance, charge and flux along with the boundary and initial conditions of operation; (b) an introduction of detailed charge- and flux-controlled SPICE memristor models realizing the proposed mathematical memristor model; (c) The incorporation of the memristor model in the SPICE realization of a third-order chaotic system where a single HP memristor acts as the nonlinear part of the system. Simulation results are provided to validate the mathematical model and the synthesis and operation of the third-order chaotic system.

IIP3: CAUSAL RELATIONSHIP FROM TRANSCONDUCTOR TO LADDER Gm-C FILTER

2013 ◽  
Vol 22 (09) ◽  
pp. 1340004
Author(s):  
TERDPUN CHOOGORN ◽  
JIRAYUTH MAHATTANAKUL
Keyword(s):  
Causal Relationship ◽  
Third Order ◽  
The Third ◽  
Analytical Results ◽  
Simulation Results ◽  
Intercept Point

Causal relationship between the third-order input intercept point (IIP3) of transconductors and that of doubly-terminated ladder Gm-C filter employing these transconductors is explored and the formula relating both IIP3's is derived. The analytical results reveal that the IIP3 of the ladder Gm-C filter is about 1.2 dBV higher than the IIP3 of the transconductors and the validity of this finding is well confirmed by simulation results.

Three Parametric Model Third-Order Software Phase-Locked Loop and its Application in Range Measuring System

2011 ◽  
Vol 383-390 ◽  
pp. 5250-5256
Author(s):  
Xiao Min Hou ◽  
Yun Wang
Keyword(s):  
Phase Locked Loop ◽  
Parametric Model ◽  
Measuring System ◽  
Parameter Setting ◽  
Experiment Data ◽  
Measuring Process ◽  
Third Order ◽  
Loop Filter ◽  
Filter Model ◽  
C Language

In order to improve the precision of side tone range measuring and realize the range measuring process by software, one kind of three parametric model third-order software phase-locked loop (SPLL) is designed based on three parametric loop filter model and the predominant closed-loop poles theory, which can apply the parameter setting principles of the second-order phase-locked loop; this kind of third-order SPLL is realized through C++ language programming and used as the range measuring system’s side tone phase-locked loop(PLL) to process the experiment data. The results indicates that the precision of phase measuring and capture time satisfy the system’s index.

scholarly journals Design and Implementation of Third Order Low Pass Digital FIR Filter using Pipelining Retiming Technique

2021 ◽  
Vol 10 (4) ◽  
pp. 178-184
Author(s):  
Daimond Soibam Singh ◽  
Manoj Kumar
Keyword(s):  
Fir Filter ◽  
Second Order ◽  
Third Order ◽  
Feed Forward ◽  
Design And Implementation ◽  
The Third ◽  
Low Pass ◽  
Simulation Results ◽  
Retiming Technique ◽  
Kaiser Window

This paper presents design and implementation of 3rd order low pass digital FIR filter using pipelining retiming technique. Aim of this paper is to apply pipelining retiming technique on low pass digital FIR filter and compare with the existing second order retimed FIR filter and third order broadcast, non-broadcast low pass FIR filter. MATLAB FDA tool is used to calculate digital FIR filter coefficients. Hamming and Kaiser window methods are used to find out the coefficients of the FIR filter. Broadcast and non broadcast third order low pass FIR filter architectures are used for pipelining retiming .Cutset and feed forward pipelining retiming techniques are used to retime the third order low pass digital FIR filter. We design our algorithm in VHDL and implemented on Xilinx Vivado xc7a35tcpg261-1. Area (LUT), speed and power are calculated using Xilinx Vivado 2015.2 tool. Synthesis and simulation results are discussed in this paper. Speed and area (LUT) of proposed third order low pass FIR filter is improved in comparison with existing designs.

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