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Relevant bibliographies by topics / PHASE ERROR BANDWIDTH

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Journal articles

Academic literature on the topic 'PHASE ERROR BANDWIDTH'

Author: Grafiati

Published: 11 September 2023

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Journal articles on the topic "PHASE ERROR BANDWIDTH"

1

Torfs, D., J. De Schutter, and J. Swevers. "Extended Bandwidth Zero Phase Error Tracking Control of Nonminimal Phase Systems." Journal of Dynamic Systems, Measurement, and Control 114, no. 3 (1992): 347–51. http://dx.doi.org/10.1115/1.2897354.

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This paper describes a new feedforward algorithm for accurate tracking control of nonminimal phase systems. Accurate feedforward calculation involves a prefilter design using the inverse system model. Nonminimal phase systems cause problems with this prefilter design, because unstable zeros become unstable poles in the inverse model. The zero phase error tracking control algorithm (ZPETC) consists of a substitution scheme, which removes the unstable zeros. This scheme introduces a small gain error, which increases with frequency, but no phase error. This paper investigates additional propertie

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2

Huang, Yi Cheng, Shu Ting Li, and Kuan Heng Peng. "Precision Motion of Iterative Learning Controller Using Adaptive Filter Bandwidth Tuning by Improved Particle Swarm Optimization Technique." Applied Mechanics and Materials 376 (August 2013): 349–53. http://dx.doi.org/10.4028/www.scientific.net/amm.376.349.

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This paper utilized the Improved Particle Swarm Optimization (IPSO) technique for adjusting the gains of PID and the bandwidth of zero-phase Butterworth Filter of an Iterative Learning Controller (ILC) for precision motion. Simulation results show that IPSO-ILC-PID controller without adaptive bandwidth filter tuning have the chance of producing high frequencies in the error signals when the filter bandwidth is fixed for every repetition. However the learnable and unlearnable error signals should be separated for bettering control process. Thus the adaptive bandwidth of a zero phase filter in I

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3

Zhao, Lei, Lei Shi, and Congying Zhu. "New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation." Electronics 7, no. 12 (2018): 346. http://dx.doi.org/10.3390/electronics7120346.

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Synchronization of large acquisition bandwidth brings great challenges to the traditional second-order phase-locked loop (PLL). To address the contradiction between acquisition bandwidth and noise suppression capability of the traditional PLL, a new second-order PLL coupled with a nonlinear element is proposed. The proposed nonlinear second-order PLL regulates the loop noise bandwidth adaptively by the nonlinear module. When a large input–output phase error occurs, this PLL reduces the frequency offset quickly by taking advantage of the large bandwidth. When the phase error is reduced by the l

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4

Passafiume, Marco, Giovanni Collodi, Edoardo Ciervo, and Alessandro Cidronali. "A Novel TDoA-Based Method for 3D Combined Localization Techniques Using an Ultra-Wideband Phase Wrapping-Impaired Switched Beam Antenna." Electronics 10, no. 17 (2021): 2137. http://dx.doi.org/10.3390/electronics10172137.

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This paper presents a novel Time Difference of Arrival-based approach suitable for single-anchor positioning systems, implemented by phase wrapping-impaired array antenna. With the latter being a typical occurrence in large Switched Beam Antenna (SBA) operating in the low microwave range. The proposed method takes advantage from the large bandwidth of radio link, established between the anchor and the positioning target, by generating an unambiguous equivalent phase relationship between antenna array elements. The technique is validated by adopting a relatively large SBA antenna operating in t

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5

Cruz, Madson Pereira, Rodolfo Novellino Benda, Maria Flávia Soares Pinto Carvalho, Guilherme Menezes Lage, Maria Teresa Cattuzzo, and Herbert Ugrinowitsch. "Bandwidth knowledge of results persists on motor skills acquisition." Motricidade 14, no. 2-3 (2018): 107–14. http://dx.doi.org/10.6063/motricidade.14294.

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The aim of this study was to investigate the short and long-term effects of the bandwidth KR in learning of the absolute and relative dimensions of a motor skill. Twenty-two undergraduate students divided into two groups: G15 who received KR when the relative error exceeded 15%; and G0, with KR after every trial. The study consisted of an acquisition phase, and the volunteers practiced 100 trials with a target time of 850 ms and relative of 22.2%, 44.4% and 33.3% between the first and second, second and third, third and fourth keys, respectively. This phase, KR related to relative time (relati

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6

Song, Young-Jin, Thomas Pany, and Jong-Hoon Won. "Theoretical Upper and Lower Limits for Normalized Bandwidth of Digital Phase-Locked Loop in GNSS Receivers." Sensors 23, no. 13 (2023): 5887. http://dx.doi.org/10.3390/s23135887.

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Determining the loop noise bandwidth and the coherent integration time is essential and important for the design of a reliable digital phase-locked loop (DPLL) in global navigation satellite system (GNSS) receivers. In general, designers set such parameters approximately by utilizing the well-known fact that the DPLL is stable if the normalized bandwidth, which is the product of the integration time and the noise bandwidth, is much less than one. However, actual limit points are not fixed at exactly one, and they vary with the loop filter order and implementation method. Furthermore, a lower l

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7

Ferrari, Mauro, and Luca Piattella. "0.8–8 GHz 4-bit MMIC phase shifter for T/R modules." International Journal of Microwave and Wireless Technologies 7, no. 3-4 (2015): 317–26. http://dx.doi.org/10.1017/s1759078715000793.

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This paper presents the design approach and test results of a full passive, decade bandwidth GaAs MMIC, composed by a phase shifter (PS) with a cascaded absorptive single pole double throw switch, suitable for transmitter/receiver modules in active electronically scanned array. The proposed PS – fabricated using a UMS GaAs 0.25 PHEMT process – combines all-pass filters with high-pass filters, in order to provide less than 13 dB insertion loss, less than ±20° phase error and less than ±2.5 dB amplitude error in the 0.8–8 GHz bandwidth.

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8

Kim, Kyeong-Rok, and Jae-Hyun Kim. "Wideband Waveform Generation Using MDDS and Phase Compensation for X-Band SAR." Remote Sensing 12, no. 9 (2020): 1431. http://dx.doi.org/10.3390/rs12091431.

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This study investigated wideband waveform generation using a field programmable gate array (FPGA) for X-band high-resolution synthetic aperture radar (SAR). Due to the range resolution determined by the bandwidth, we focused on wide bandwidth generation while preserving spectrum quality. The proposed method can generate wide bandwidth using a relatively low system clock. The new approach was designed in Simulink and implemented by very-high-speed-integrated-circuits hardware description language (VHDL). We also proposed a hardware structure in accordance with the proposed method. Signal connec

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9

Torfs, Dirk, and Joris De Schutter. "Optimal Feedforward Prefilter With Frequency Domain Specification for Nonminimum Phase Systems." Journal of Dynamic Systems, Measurement, and Control 118, no. 4 (1996): 791–95. http://dx.doi.org/10.1115/1.2802359.

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The paper shows the influence of the location of unstable zeros on the tracking performance of feedforward prefilters. Unstable zeros are divided into a number of classes. It is shown that existing feedforward prefilters (Zero Phase Error Tracking Control (ZPETC), E-filter, Extended Bandwidth ZPETC, ...) perform well for two classes, but fail for a particular class of unstable zeros. For this class, a characteristic frequency, fc, exists such that the induced gain error attenuates all frequencies of the reference trajectory f ≤ fc and amplifies frequencies f > fc. Hence, it is impossible to

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10

Vyomal N, Pandya, P. Rahul Reddy, and Abhishek Choubey. "Bandwidth Estimation Algorithm of WestwoodNR for Wireless Network." International Journal of Engineering & Technology 7, no. 2.16 (2018): 114. http://dx.doi.org/10.14419/ijet.v7i2.16.11521.

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Two widely known parameters of Transmission Control Protocol (TCP) used to control the flow of packets are Congestion Window (cwnd) & Slow Start Threshold (ssthresh). After congestion, slow start phase or fast-retransmit phase come in action wherein TCP has an important role in the reduction of these parameters. This is in response to packet loss identified by TCP. This in turn will cause unnecessary reduction of data flow & degradation of TCP throughput. Researchers have developed some algorithms to come out of this problem, WestwoodNR is one of them. WestwoodNR is using Bandwidth Est

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