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Letteratura scientifica selezionata sul tema "UNIVERSAL FILTERs"

Autore: Grafiati

Pubblicato: 11 settembre 2023

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Articoli di riviste sul tema "UNIVERSAL FILTERs"

Zemskov, Y., E. Koptseva, A. Pankratova, S. Borodulina e S. Kalinov. "Universal prediction algorithm in maneuvering target tracking". Journal of Physics: Conference Series 2176, n. 1 (1 giugno 2022): 012074. http://dx.doi.org/10.1088/1742-6596/2176/1/012074.

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Abstract The paper considers the methods to increase the accuracy of trajectory processing of the results of radar measurements in automated air traffic management systems (AATMS). The recursive filters traditionally used in the secondary processing path of radar information of modern AATMS systems are briefly considered: alpha-beta filter, linear and extended Kalman filters, multi-model filter. Along with multi-model Kalman filters it is proposed to use a universal filter based on the universal prediction theorem, the accuracy of which is asymptotically no worse than any other filter in the class of continuous functions. The algorithm for the operation of a universal alpha-beta filter was developed. As a result of modeling, it was obtained that the mean square of the tracking error of the trajectory of a maneuvering target for the universal filter during the change of the motion model turned out to be lower than for traditional filters.

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Kisel, A. V. "Nyquist 1 universal filters". IEEE Transactions on Communications 48, n. 7 (luglio 2000): 1095–99. http://dx.doi.org/10.1109/26.855516.

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Abuelma'atti, Muhammad Taher. "Programmable Current-Mode Universal Active Filters Employing Current Conveyors". Active and Passive Electronic Components 21, n. 3 (1998): 221–30. http://dx.doi.org/10.1155/1998/80984.

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Novel current-mode active filter circuits using current-conveyors are presented. The proposed circuits can realize all standard second-order filter functions. The circuits enjoy high output impedances and can, therefore, be easily cascaded to produce higher order filters. Moreover, the realized filter function can be easily programmed using at most a 13-bit digital number without changing the circuit topology.

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Afzal, Neelofer, e Devesh Singh. "Reconfigurable Mixed Mode Universal Filter". Active and Passive Electronic Components 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/769198.

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This paper presents a novel mixed mode universal filter configuration capable of working in voltage and transimpedance mode. The proposed single filter configuration can be reconfigured digitally to realize all the five second order filter functions (types) at single output port. Other salient features of proposed configuration include independently programmable filter parameters, full cascadability, and low sensitivity figure. However, all these features are provided at the cost of quite large number of active elements. It needs three digitally programmable current feedback amplifiers and three digitally programmable current conveyors. Use of six active elements is justified by introducing three additional reduced hardware mixed mode universal filter configurations and its comparison with reported filters.

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Pandey, Neeta, e Sajal K. Paul. "VM and CM Universal Filters Based on Single DVCCTA". Active and Passive Electronic Components 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/929507.

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A universal voltage-mode filter (VM) and a current-mode filter (CM) based on recently proposed active building block, namely, differential voltage current conveyor transconductance amplifier (DVCCTA) are proposed. Both the circuits use a single DVCCTA, two capacitors, and a single resistor. The filters enjoy low-sensitivity performance and low component spread and exhibit electronic tunability of filter parameters via bias currents of DVCCTA. SPICE simulation using 0.25 μm TSMC CMOS technology parameters is included to show the workability of the proposed circuits.

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KASIMIS, CHRISOSTOMOS, e COSTAS PSYCHALINOS. "SINH-DOMAIN UNIVERSAL BIQUAD FILTERS". Journal of Circuits, Systems and Computers 23, n. 09 (25 agosto 2014): 1450134. http://dx.doi.org/10.1142/s0218126614501345.

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A family of current-mode universal biquad filters, realized using the concept of Sinh-Domain signal processing, is introduced in this paper. Both of them have the capability for operating in a low-voltage environment and, also, for orthogonal electronic adjustment between the resonance frequency and Q factor. Employing MOS transistors models from the AMS 0.35 μm process, the performance of the proposed topologies has been evaluated by exploiting the analog design environment of Cadence software.

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Horng, Jiun-Wei, e Zih-Yang Jhao. "Voltage-Mode Universal Biquadratic Filter Using Single DVCC". ISRN Electronics 2013 (10 marzo 2013): 1–5. http://dx.doi.org/10.1155/2013/125746.

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A voltage-mode universal biquadratic filter using a differential voltage current conveyor (DVCC), two capacitors, and two resistors is presented. The proposed circuit has four input terminals and three output terminals and can realize all the standard filter functions, which are lowpass, bandpass, highpass, notch, and allpass filters, without changing the circuit topology. Three simultaneous output filter responses can be obtained from some derived filter types. The proposed circuit employs only one DVCC that simplifies the configuration.

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Abuelma'atti, Muhammad Taher, e Amir Alam Farooqui. "Universal Current-Conveyor-Based Current-Mode Filters with Single Input and Three Outputs". Active and Passive Electronic Components 20, n. 4 (1998): 195–200. http://dx.doi.org/10.1155/1998/20543.

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Universal active current-mode filters with single input and three outputs are presented. The proposed filters avoid the use of external feedback in any part of the circuit and use grounded resistors and grounded capacitors. The proposed circuits can simultaneously realize lowpass, highpass, and bandpass filter functions.

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Sharroush, Sherif, e Yasser Abdalla. "A Real-Time Electronically Tunable All-MOS Universal Biquadratic Voltage-Mode Filter". Jordan Journal of Electrical Engineering 9, n. 2 (2023): 242. http://dx.doi.org/10.5455/jjee.204-1671142029.

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— In this paper, an electronically tunable universal biquadratic voltage-mode filter that is based only on MOS transistors is proposed. Configuration of the proposed filter is simple and there is no need to use component matching. Since the proposed filter contains only MOS transistors, it is very suitable for implementation in system-on-chip (SoC) applications. The cutoff frequency of the lowpass (LP) and highpass (HP) filters as well as the center frequency and the bandwidth of the bandpass (BP) and bandstop (BS) filters can be controlled either in a continuous range or in a discrete manner by means of a digital control word. Besides, the filter type can be changed during the real time by an appropriate code. Operation of all the filtering functions are verified by simulation using the Berkeley predictive-technology models (BPTM) of the 130 nm complementary metal-oxide semiconductor (CMOS) technology with power-supply voltage, VDD, of 1.2 V. The proposed filter is analyzed quantitatively, and the effects of the total-harmonic distortion (THD), noise, process, voltage and temperature (PVT) variations are also investigated. The average power consumption of the LP, HP, BP, BS, and allpass (AP) filters are found to be 30, 118, 74, 118, and 30 (all in µW). The price paid for all these advantages is more sensitivity to process variations for the lowpass filter.

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LEE, CHEN-NONG. "HIGH-ORDER MULTIPLE-MODE AND TRANSADMITTANCE-MODE OTA-C UNIVERSAL FILTERS". Journal of Circuits, Systems and Computers 21, n. 05 (agosto 2012): 1250048. http://dx.doi.org/10.1142/s021812661250048x.

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This paper presents two new high-order OTA-C universal filters. The first proposed filter structure employs n + 3 operational transconductance amplifiers (OTAs) and n grounded capacitors, which can realize nth-order multiple-mode (including voltage, current, transadmittance, and transimpedance modes) universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. Since the OTA has high input and output impedances, it is very suitable for transadmittance-mode circuit applications. Therefore, a new high-order transadmittance-mode OTA-C universal filter structure using the minimum components is introduced. The second proposed filter structure uses only n + 1 OTAs and n grounded capacitors, which are the minimum components necessary for realizing nth-order transadmittance-mode universal filtering responses (lowpass, highpass, bandpass, bandreject, and allpass) from the same topology. This represents the attractive feature from chip area and power consumption point of view. Moreover, the two new OTA-C universal filters still enjoy many important advantages: no need of extra inverting or double-type amplifiers for special input signals, using only n grounded capacitors, no need of any resistors, cascadably connecting the former voltage-mode stage and the latter current-mode stage, and low sensitivity performance. H-Spice simulations with TSMC 0.35 μm process and ±1.65 V supply voltages are included and confirm the theoretical predictions.

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Più fonti

Tesi sul tema "UNIVERSAL FILTERs"

Smith, George. "Refining queries on a treebank with XSLT filters : approaching the universal quantifier". Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2006/867/.

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This paper discusses the use of XSLT stylesheets as a filtering mechanism for refining the results of user queries on treebanks.
The discussion is within the context of the TIGER treebank, the associated search engine and query language, but the general ideas can apply to any search engine for XML-encoded treebanks.
It will be shown that important classes of linguistic phenomena can be accessed by applying relatively simple XSLT templates to the output of a query, effectively simulating the universal quantifier for a subset of the query language. uni-potsdam.de/cgi-bin/publika/view.pl?id=206">

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Shadrin, Aleksandr. "Analogové pole pro realizaci programovatelného filtru". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221026.

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The state-variable analog filter topologies are described. Using the transfer function theory and operational configurations suitable for integration and derivation, a new universal filter topology are proposed. The circuit has been implemented in CMOS technology by using six operational amplifiers, eight analog switches and five programming resistor array. Tunable corner frequencies, quality factors and gain are realized. Using the serial peripheral interface or digital memory can be realized this real-time digitally programmable first- and second-order analog filter with the tunable parameters.

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Melo, Priscila Facco de. "Projeto e implementação de um filtro ativo universal trifásico controlado digitalmente". Universidade Tecnológica Federal do Paraná, 2010. http://repositorio.utfpr.edu.br/jspui/handle/1/900.

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Este trabalho apresenta o desenvolvimento e a implementação de um filtro ativo trifásico universal, o qual é composto pela conexão de três módulos monofásicos. Cada módulo monofásico é independente e é controlado por um processador digital de sinais. A estrutura de potência utilizada em cada módulo é uma topologia de três braços em que dois conversores compartilham um braço, de forma que o circuito apresenta número de componentes de potência reduzido na versão monofásica e pode operar sem o uso de um transformador. O filtro ativo proposto é capaz de compensar a distorção harmônica e regular o nível da tensão entregue para a carga. Ele também compensa a corrente da carga conectada na saída do filtro, corrigindo seu conteúdo harmônico e fator de potência. Apresenta-se uma revisão bibliográfica sobre alguns assuntos referentes à qualidade de energia elétrica, como os conceitos de distorção harmônica, seus efeitos e as normas pertinentes. Em seguida, as principais topologias de filtros ativos são apresentadas. Três módulos monofásicos, de 1500 W cada, são implementados e o funcionamento da estrutura de três braços, bem como os principais parâmetros do circuito de potência são analisados. Um algoritmo PLL (Phase Locked Loop) digital é empregado para o sincronismo de cada módulo. Controladores repetitivos são utilizados para o controle da tensão e da corrente. Os detalhes da estratégia de controle, bem como o projeto do circuito de sincronismo e dos controladores digitais são apresentados. Os resultados teóricos obtidos são comprovados através da simulação e da experimentação do protótipo implementado. A utilização do filtro ativo possibilitou a redução do conteúdo harmônico das cargas utilizadas nos testes, bem como elevou o fator de potência e corrigiu a distorção e o nível da tensão entregue para a carga.
This paper presents the development and implementation of a three-phase universal active filter consisting of three single-phase modules. Each single-phase module is independent and is controlled by a digital signal processor. The power structure used in each module is a three-arm topology in which two converts share one arm, so that the circuit has a reduced count of components and can operate without using a transformer. The proposed active filter can compensate harmonic distortion and adjust the voltage level delivered to the load. It also compensates the load current connected to the filter output, correcting its harmonic content and power factor. It presents a literature review on some issues related to power quality, as the concepts of harmonic distortion, its effects and relevant standards. Then the principal topologies used in active filters are presented. Three single-phase modules, each one of 1500 W, are implemented and the operation principles of the three-arms structure and the main parameters of the power circuit are analyzed. A digital PLL (Phase Locked Loop) is employed to synchronize each module. Repetitive controllers are used to control the voltage and current. Details of the control strategy and circuit design of the synchronism and digital controllers are presented. The results are verified through simulation and experimentation of the implemented prototype. Using the active filter was possible to reduce the harmonic content of the loads used in the experimental tests as well as increasing the power factor and to correct the distortion and voltage level supplied to the load.

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Larsson, Mats. "Development of a Digital Universal Filter Bank". Thesis, Uppsala universitet, Signaler och System, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307929.

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This is a master's thesis project, which is a part of the Master Programme in Electrical Engineering at Uppsala university. When developing a product or performing measurements, it is sometimes necessary to remove some content of a signal. This might be due to an interfering source that has to be filtered out, or that only a specific frequency interval is of interest. In such a case, it would be practical if a universal frequency selective filter was available and easy to use. In this thesis, a platform for implementing different frequency selective digital filters is developed. Through a user interface, parameters such as sampling frequency, filter order, type of filter and cutoff frequencies are set by the user. This provides a platform which is easy to configure in order to run one or multiple IIR or FIR filters in various constellations. By combining different filters, a wide variety of frequency responses can be obtained. A prototype is constructed, which allows the user to connect up to two input signals and retrieve up to two output signals. The filter bank is programmed in C and implemented in a 32-bit microcontroller, base on the ARM architecture. To get a reliable prototype, a printed circuit board is designed and manufactured. To protect the electronics from external stress, a cover is designed and 3D-printed. The filter design algorithms and the algorithm used when running the filter bank gives satisfying results. The capacity of the filter bank can be increased by refining the filtering algorithm. By improving the hardware, noise generated by the electronics can be decreased. The filter bank has a really good potential to become a very useful tool.

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Syring, Felicia Maria [Verfasser]. "The future of sunscreen efficacy evaluation : a comparative study of universal sun protection factor, radical formation ratio and sun protection factor assessing the protective value of sunscreen formulations containing chemical-, and/or physical filters as well as antioxidant additives / Felicia Maria Syring". Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2015. http://d-nb.info/1067441972/34.

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Fröhlich, Lubomír. "Aktivní kmitočtové filtry pro vyšší frekvence". Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233616.

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This thesis deals with the synthesis and optimization of frequency analogue filters with modern active elements usable for higher frequencies. The thesis is divided into three parts, the first part deals with the problematic concerning Leap-Frog combined ARC structure. Due to a difficult design, this method is not described in a detail and used in practice, although it shows e.g. low sensitivity. Firstly, a complete analysis of individual filters was made (for and T endings) and consequently these findings were used during implementation of this method to NAF program. Finally, samples of real filters were realized (for verification of functioning and correct design). Another very interesting topic concerning filters is usage of coupled band-pass for small bandwidth, where it is necessary to solve the problems concerning ratio of building elements values, but also price, quality, size of coils, sensitivity, Q factors, coefficients etc. That is why in practice a coil is very often substituted with other equivalent lossy and lossless blocks which create ARC filters structure. The design and the possibility of usage of lossy grounded elements were described here (such as synthetic inductors, frequency dependent negative resistor). Some parts of the design are individual computer sensitivity analysis, setting of usage and quality comparison of individual lossy grounded blocks. Besides, a program for these elements was created, it is useful for a quick design and depiction of transfer characteristics. The third part deals with the usage of tuning universal filters consisting three or more operational amplifiers, which secures its universality and possibility to create different kinds of transfer characteristic. In practice, Akerberg - Mossberg and Kerwin - Huelsman - Newcomb are the most used types of filters. These were also compared with less common universal filters. In the end, the possibility of digital tuning of universal filter with the help of digital potentiometers for filters of 10th order and frequency around 1 MHz was shown.

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Salášek, Jan. "Analogové funkční bloky fraktálního řádu". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241141.

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Thesis describes the design of the blocks of fractional-order filters approximation using a filter of higher order integer. Active filters of third-order are use to create filter of 1+alfa -order, where alfa is between zero to one. One of the filters is practically implemented and measured.

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Prát, Marek. "Návrh elektronicky rekonfigurovatelných filtračních struktur s moderními aktivními prvky". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377113.

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The aim of master's thesis was design of electronically reconfigurable filters. Adjustability of pole frequency or quality factor is possible. First part of thesis deals with theoretical analysis of filters, their operation modes, design of frequency filters using Signal-Flow graph method and parasitic analysis. The next part describes active elements used in thesis. In a third part, three reconfigurable filters are described and designed and their simulations and parasitic analysis are made. Last part deals with filter design in EAGLE and experimental measurement.

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Ju, Ziyang [Verfasser]. "A Filter Bank Based Reconfigurable Receiver Architecture for Universal Wireless Communications / Ziyang Ju". Kassel : Kassel University Press, 2010. http://d-nb.info/1016850379/34.

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Gajdoš, Adam. "Elektronicky rekonfigurovatelné kmitočtové filtry". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241983.

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The aim of the thesis was design of reconnection-less and electronically reconfigurable filters of SISO type with non-traditional active elements. Adjustability of bandwidth or quality factor is also required. First part of the thesis deals with theoretical analysis of filters, their operation modes and design of frequency filters using Signal-flow graph method aswell. Last but not least, electronical reconfiguration of transfer function and parasitic analysis was discussed. Another part describes active elements used in the practical part of thesis. Behaviors and design of active elements using existing circuits (e.g. UCC,EL2082) are described and their transformation into the Signal-flow graph form too. In the practical part five reconnection-less and reconfigurable filters of SISO type was designed using SNAP program. Simulations were done using Orcad program with ideal and real simulation models of active elements. Last part deals with filter design in EAGLE and experimental measurement.

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Più fonti

Libri sul tema "UNIVERSAL FILTERs"

Atsushi, Shiho, e SpringerLink (Online service), a cura di. Weight filtrations on log crystalline cohomologies of families of open smooth varieties. Berlin: Springer, 2008.

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Larson, William E. Universal signal conditioning amplifier. [Washington, D.C: National Aeronautics and Space Administration, 1994.

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d'Iribarne, Philippe, Sylvie Chevrier, Alain Henry, Jean-Pierre Segal e Geneviève Tréguer-Felten. Cross-Cultural Management Revisited. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198857471.001.0001.

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The cross-cultural management literature is still dominated by the quantitative approach to cultures which made the research field popular in the early 1980’s. While the hegemony of this approach was being consolidated, a French research group, Gestion & Société, led by Philippe d’Iribarne, was conducting alternative research. Over the past thirty years, the team has carried out investigations in over fifty countries, collecting data from a large sample of companies concerned with making the most of the cultures with which they were dealing. This book provides an overview of the lessons learnt from thirty years of empirical research and of the refinements of a new theoretical approach to national cultures which challenges the mainstream ones. It introduces an interpretative approach to culture considered as a filter through which people understand reality and give it meaning. Throughout the world, employees confer different meanings on the daily situations arising from companies’ operations such as being subject to the authority of a manager, responding to requests from a client, or having one’s work monitored. All interactions within organizational contexts are underpinned by social relations which make sense in different cultural universes of meaning. Drawing upon this interpretative perspective, the book covers the main management issues: leadership, procedures implementation and control, decision-making, industrial relations, customer relations, ethics and corporate social responsibility, interpersonal and corporate communication, multicultural teams, and international transfers of management practices. Finally, the book provides methodological guidelines to enable researchers and practitioners to engage in this alternative approach.

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Capitoli di libri sul tema "UNIVERSAL FILTERs"

Laoudias, Costas, e Costas Psychalinos. "Universal Biquads Using Current Mirrors". In Integrated Filters for Short Range Wireless and Biomedical Applications, 7–39. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0260-2_2.

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Filho, Jackson Feijó, e Wilson Prata. "Improving Static Print Design Readability Using Mobile Reading Filters". In Universal Access in Human-Computer Interaction. Addressing Diversity, 31–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02707-9_4.

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Alam, Md Shahbaz, Amit Agrawal, Kulwant Singh e Ashish Shrivastava. "Realization of Universal Filter Using CCII". In Lecture Notes in Electrical Engineering, 395–407. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0588-9_39.

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Schulze-Makuch, Dirk, e William Bains. "Der große Filter und das Fermi-Paradoxon". In Das lebendige Universum, 237–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-58430-9_13.

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Yasir, Mohd, e Naushad Alam. "CNTFET-Based Universal Filter Using DO-CCII". In Lecture Notes in Electrical Engineering, 47–60. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0055-8_5.

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Lahane, Ajay, Swapnali G. Gharat e Uday Pandit Khot. "A switched capacitor based universal filter for IVRS". In Thinkquest~2010, 127–32. New Delhi: Springer India, 2011. http://dx.doi.org/10.1007/978-81-8489-989-4_23.

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Yasir, Mohd, e Naushad Alam. "TFET-based Universal Filter for Low-Power Applications". In Tunneling Field Effect Transistors, 251–65. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003327035-14.

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Singh, Sajai Vir, e Ravindra Singh Tomar. "Current Tunable Voltage-Mode Universal Biquad Filter Using CCTAs". In Lecture Notes in Electrical Engineering, 443–53. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2553-3_43.

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Komal, Ramnish Kumar e K. L. Pushkar. "CMOS CDBA-Based Low-Voltage Low-Power Universal Filter". In Proceedings of First International Conference on Computational Electronics for Wireless Communications, 127–38. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6246-1_11.

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Yarrabothu, Ravi Sekhar, Narmada Kanchukommula e Usha Rani Nelakuditi. "Design and Analysis of Universal-Filtered Multi-carrier (UFMC) Waveform for 5G Cellular Communications Using Kaiser Filter". In Advances in Intelligent Systems and Computing, 721–30. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3393-4_73.

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Atti di convegni sul tema "UNIVERSAL FILTERs"

Marom, E., N. Konforti e D. Mendlovic. "Optical generation of single harmonic matched filters". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.tuc4.

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Matched filters used for optical pattern recognition are based on holographic recordings that have to be prepared in advance either optically (by using the target itself) or by synthetic computer generation. The use of a single harmonic (circular or Mellin radial) in the recognition process, allows the addition of one invariant parameter, rotation or scale, respectively. Unfortunately, these harmonic filters have to be derived by digital computation for each object, not in real time and with a limited resolution capability. In this paper we present a novel approach for real time optical generation of universal circular or Mellin radial harmonic matched filters. The realization of this approach is based on: (a) Preparation of universal filters enabling us to perform the so-called Mellin [ln(r), h] transform and its inverse, both generated by invoking the method of saddle point integration in conjunction with Lee's computer-generated interferograms. (b) Utilization of those filters in conjunction with any input, in a 10-f optical processing setup, to generate in real time the formation of a circular or radial harmonic matched filter.

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"Highly Efficient Photocatalytic Degradation of NO for Indoor Air Purification by Using Ceramic Foam Air Filters Coated with Mesoporous TiO2 Thin Films". In Universal Researchers. Universal Researchers, 2015. http://dx.doi.org/10.17758/ur.ue0315205.

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Shukla, Devarshi, e Saumya Tripathi. "Design of VDTA based tuneable universal filters". In 2020 IEEE Students Conference on Engineering & Systems (SCES). IEEE, 2020. http://dx.doi.org/10.1109/sces50439.2020.9236718.

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Ruan, A. W., Y. B. Liao, P. Li e J. X. Li. "An ALU-based universal architecture for FIR filters". In 2009 International Conference on Communications, Circuits and Systems (ICCCAS). IEEE, 2009. http://dx.doi.org/10.1109/icccas.2009.5250337.

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Ketzer, Marcos B., e Cursino B. Jacobina. "Nonlinear control for single-phase universal active filters". In IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2014. http://dx.doi.org/10.1109/iecon.2014.7048500.

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Minaei, Shahram, Erkan Yuce, Norbert Herencsar e Jaroslav Koton. "SIFO voltage-mode universal filters employing TO-CCIIs". In 2012 35th International Conference on Telecommunications and Signal Processing (TSP). IEEE, 2012. http://dx.doi.org/10.1109/tsp.2012.6256315.

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Laoudias, Costas, e Costas Psychalinos. "Multiple Input Multiple Output current-mode universal biquad filters". In Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference. IEEE, 2010. http://dx.doi.org/10.1109/melcon.2010.5476278.

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Rodrigues, P. L. S., C. B. Jacobina e G. A. de A. Carlos. "Universal active power filters based on nine-leg converter". In 2015 IEEE Energy Conversion Congress and Exposition. IEEE, 2015. http://dx.doi.org/10.1109/ecce.2015.7310202.

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Yen-Liang Chen, Chun-Yu Chen, Kai-Yuan Jheng e An-Yeu Wu. "A universal look-ahead algorithm for pipelining IIR filters". In 2008 IEEE International Symposium on VLSI Design, Automation and Test (VLSI-DAT). IEEE, 2008. http://dx.doi.org/10.1109/vdat.2008.4542462.

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Dougherty, Edward R., e Charles R. Giardina. "Universal Systolic Architecture For Morphological And Convolutional Image Filters". In Visual Communications and Image Processing '88: Third in a Series, a cura di T. Russell Hsing. SPIE, 1988. http://dx.doi.org/10.1117/12.969022.

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