Relevant bibliographies by topics / Multifunctional frequency filter

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Multifunctional frequency filter'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Multifunctional frequency filter"

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Langhammer, Lukas, Roman Sotner, Jan Dvorak, and Tomas Dostal. "Dual-Mode Multifunctional Reconnection-Less Reconfigurable Filter." Elektronika ir Elektrotechnika 26, no. 3 (June 26, 2020): 36–41. http://dx.doi.org/10.5755/j01.eie.26.3.25856.

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A novel solution of a reconnection-less reconfigurable filter is being presented. The filter works in the current mode, voltage mode, and mixed mode (voltage tocurrent) offering sixteen transfer functions in total. The structure utilizes a voltage differencing transconductance amplifier, current follower and voltage, and current amplifiers. The designed structure offers the control of the pole frequency and quality factor and the adjustment of the band-stop/band-pass area of available functions. The proposed design is supported by the PSpice simulations using available simulation models.
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Soisang, Suriya, Kamon Jirasereemomkul, Winai Jaikla, and Kohji Higuchi. "Voltage-Mode Multifunctional Biquadratic Filter Using VDDDA." Applied Mechanics and Materials 781 (August 2015): 155–59. http://dx.doi.org/10.4028/www.scientific.net/amm.781.155.

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This paper presents a new voltage-mode single-input multiple-output multifunctional biquadratic filter using voltage differencing differential difference amplifiers (VDDDA) with high-input impedance. It consists of two VDDDA, two resistors, and two grounded capacitors. It can synthesize basic filter functions: high-past (HP), low-pass (LP) and band-pass (BP), responding through only single structure. The natural frequency can obtain by adjusting bias currents of VDDDA without disturbing quality factors. Because of using VDDDA as an active device in the circuit, the power consumption was low. The simulation using PSPICE program indicated that circuit operation has good agreement with the theory.
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JERABEK, J., J. DVORAK, R. SOTNER, B. METIN, and K. VRBA. "Multifunctional current-mode filter with dual-parameter control of the pole frequency." Advances in Electrical and Computer Engineering 16, no. 3 (2016): 31–36. http://dx.doi.org/10.4316/aece.2016.03005.

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Yucel, Firat, and Erkan Yuce. "A New CCII Based Voltage-Mode Multifunctional Filter with Reduced Number of Active and Passive Elements." Journal of Circuits, Systems and Computers 24, no. 04 (March 4, 2015): 1550047. http://dx.doi.org/10.1142/s0218126615500474.

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In this paper, a new voltage-mode (VM) multifunctional filter comprising two second-generation current conveyors (CCIIs) is proposed. The proposed filter with one input and three outputs is also composed of three resistors and two grounded capacitors. The proposed filter has high input impedance; thus, it can be easily connected with other VM circuits. The proposed filter can simultaneously provide low-pass (LP), band-pass (BP) and high-pass (HP) responses. A number of time domain and frequency domain simulation results are included to confirm the claimed theory.
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Polak, Josef, Jan Jerabek, Lukas Langhammer, Roman Sotner, Jan Dvorak, and David Panek. "Digitally Controllable Current Amplifier and Current Conveyors in Practical Application of Controllable Frequency Filter." Journal of Electrical Engineering 67, no. 4 (July 1, 2016): 261–66. http://dx.doi.org/10.1515/jee-2016-0038.

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Abstract This paper presents the simulations results in comparison with the measured results of the practical realization of the multifunctional second order frequency filter with a Digitally Adjustable Current Amplifier (DACA) and two Dual-Output Controllable Current Conveyors (CCCII +/−). This filter is designed for use in current mode. The filter was designed of the single input multiple outputs (SIMO) type, therefore it has only one input and three outputs with individual filtering functions. DACA element used in a newly proposed circuit is present in form of an integrated chip and the current conveyors are implemented using the Universal Current Conveyor (UCC) chip with designation UCC-N1B. Proposed frequency filter enables independent control of the pole frequency using parameters of two current conveyors and also independent control of the quality factor by change of a current gain of DACA.
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Khan, I. A., and M. T. Ahmed. "Realization of MOS-compatible multifunctional active-C biquadratic filter for high frequency applications." Microelectronics Journal 17, no. 4 (July 1986): 5–10. http://dx.doi.org/10.1016/s0026-2692(86)80110-0.

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Bhaskar, Data R., Ajishek Raj, and Pragati Kumar. "Mixed-Mode Universal Biquad Filter Using OTAs." Journal of Circuits, Systems and Computers 29, no. 10 (December 16, 2019): 2050162. http://dx.doi.org/10.1142/s0218126620501625.

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This paper introduces an electronically tunable mixed-mode universal biquad filter configuration employing four single output operational transconductance amplifiers (OTAs), one dual output OTA and two grounded capacitors (GCs) (ideal for integrated circuit implementation and absorbing shunt parasitic capacitances). The presented structure can realize all second-order filter functions, namely, low pass (LP), high pass (HP), band pass (BP), band reject (BR) and all pass (AP) responses in voltage mode (VM), current mode (CM), transresistance mode (TRM) and transconductance mode (TCM) using appropriate selection(s) of input signals. The cut-off frequency ([Formula: see text] and bandwidth (BW) of the realized filters can be tuned orthogonally through the transconductance (by varying the bias currents) of the OTAs. The proposed biquad configuration enjoys low active and passive sensitivities. The workability of this multifunctional biquad filter topology has been confirmed through simulations using MATLAB and Analog Design Environment (ADE) spectre tool provided by Cadence Virtuoso, using 0.18[Formula: see text][Formula: see text]m CMOS process parameter. The post-layout simulations have also been carried out to validate the theory.
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Jerabek, Jan, Roman Sotner, Josef Polak, Lukas Langhammer, Norbert Herencsar, Roman Prokop, and Kamil Vrba. "Resistor-Less Single-Purpose or Reconfigurable Biquads Utilizing Single z-Copy Controlled-Gain Voltage Differencing Current Conveyor." Journal of Circuits, Systems and Computers 26, no. 03 (November 21, 2016): 1750050. http://dx.doi.org/10.1142/s0218126617500505.

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Presented work deals with applications of the single [Formula: see text]-copy controlled-gain voltage differencing current conveyor (ZC-CG-VDCC) in single purpose and multifunctional biquadratic voltage- and current-mode active resistor-less filters. Electronically adjustable features of the active device (intrinsic current input resistance [Formula: see text], current gain [Formula: see text] and transconductance [Formula: see text]) are controlled by DC bias current. These mentioned adjustable features allow interesting possibilities of control of the pole frequency and quality factor. Four voltage-mode solutions realizing low-pass, band-pass, high-pass and band-reject filtering solutions were designed together with two current-mode filters. The current-mode solutions have curious multifunctional capability based on full utilization of electronically controllable parameters of the ZC-CG-VDCC. Two adjustable parameters of the ZC-CG-VDCC (intrinsic current input resistance and transconductance) are used for electronic setting of features of the filter (pole frequency, quality factor, tuning). Control of the third adjustable parameter (current gain) causes reconnection-less change of the transfer function between iAP (inverting all-pass response) and iBR (inverting band-reject responses). Simulation results in PSPICE and Cadence CDS 6 are used to show characteristics of the proposed circuits.
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Yucel, Firat, and Erkan Yuce. "A New Voltage-Mode Multifunctional Filter Using Only Two Voltage Followers and a Minimum Number of Passive Elements." Journal of Circuits, Systems and Computers 24, no. 06 (May 26, 2015): 1550085. http://dx.doi.org/10.1142/s0218126615500851.

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A new voltage-mode (VM) multifunctional filter using only two voltage followers (VFs), two resistors and two capacitors is proposed. The proposed filter with two inputs and two outputs can provide low-pass (LP) and high-pass (HP) responses. It does not need any critical passive component matching constraints. Additionally, it has low output impedances, low power dissipation and adequately low THD values. However, it does not have high input impedances; accordingly, it requires an extra VF to obtain high input impedance. A number of time domain and frequency domain simulations and experimental tests are performed to verify the claimed theory.
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Lewark, Ulrich Johannes, Axel Tessmann, Hermann Massler, Sandrine Wagner, Arnulf Leuther, and Ingmar Kallfass. "Active frequency-tripler MMICs for 300 GHz signal generation." International Journal of Microwave and Wireless Technologies 4, no. 3 (March 9, 2012): 259–66. http://dx.doi.org/10.1017/s1759078712000165.

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Two frequency-tripler monolithic microwave integrated circuits (MMICs) reaching sub-millimeter-wave output frequencies of 315 GHz are presented. The convenient integration of transistor–based field effect transistor (FET) frequency multipliers into multifunctional MMICs is shown by integration of a single–stage frequency-tripler with a buffer amplifier generating −0.5 dBm of peak output power at 288. Without post-amplification an average output power of −10.1 dBm in the output frequency range from 285 to 315 is measured with 10 dBm of input power. The 3-dB bandwidth is more than 30 GHz and could not be determined exactly due to the measurement setup. Both MMICs are realized in a 50 nm metamorphic high electron mobility transistor (HEMT) transistor technology. A multiple power-meter measurement technique including a waveguide filter is used to measure accurately the second harmonic power content within the output spectrum.
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Dissertations / Theses on the topic "Multifunctional frequency filter"

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Minarčík, Martin. "Návrh koncepce napěťového konvejoru a jeho aplikační možnosti." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233471.

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This doctoral thesis deals with a voltage conveyor as a new active element for an analog signal processing. Various types of the voltage conveyors have been defined as a dual active elements to current conveyors based on a duality principle. Conception of a new active element that can supply all types of the voltage conveyors have been proposed. The active element has been named an universal voltage conveyor – UVC. A voltage follower is a basic building block of the UVC. The well-known circuit realization of the voltage follower comes from four transconductance amplifiers with key parameters (voltage transfer and output resistance) derived from relative accuracy of used transconductance amplifiers has been used by UVC fabrication. A new circuit realization of the voltage follower comes from three transconductance amplifiers with key parameters also derived from relative accuracy of used transconductance amplifiers has been designed. Further the doctoral thesis deals with a frequency filter with the voltage conveyors design using signal flow graphs. Various graphs of the voltage conveyors comes from the various circuit analysis methods with non-regular active elements have been created. A basic graph of the voltage conveyor has been designed with help of a known controlled sources graphs. This graph have been used to design of multifunctional frequency filters, filters with high input and low output impedance and controlled frequency filters. A design procedure have been created so that in specific step of the frequency filter design the basic graph of the voltage conveyor could be extended to graph of any type of the voltage conveyor. Thereby a practical usage of various types of the voltage conveyors has been finding out. Further a new method of frequency filter design based on expanding of the signal flow has beenproposed.
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Borisov, Konstantin A. "Multifunctional voltage source converter for shipboard power systems." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-06042007-142951.

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Stejný, Jiří. "Návrh řiditelných kmitočtových filtrů s moderními proudovými prvky." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218116.

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This master´s thesis deals an active elements called digitally controlled current amplifier, multiple-output current follower and its usage in tunable frequency filters. These tunable frequency filters operate in a pure current mode. In the first part of this work are presented the different types of current active elements. Universal current conveyor, multiple-output current follower, digitally controlled current amplifier (UCC, MO-CF, DCCA). In the second part of this work are introduced particular methods of design tunable frequency filters. Special attention is given to using the design method of via autonomous circuits because it is one of the most. In the last part of this thesis are designed and computer-simulated individual multifunction tunable frequency filters with those already active yet elements. These filters were designed via autonomous circuits or modification of existing circuits. The functionality of the proposed filtres have been verified by computer simulation. Snap3 program was used for the symbolic analyse of circuit and OrCad PSpice program was used to simulate the characteristics of multifunction filters.
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Šotner, Roman. "Studium elektronického řízení a reálného chování variabilních filtračních a oscilačních aplikací moderních aktivních prvků." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233574.

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The thesis deals with electronically adjustable and configurable applications of the modern active elements. In the field there were presented various active elements in applications of the analog filters and oscillators which stem from basic and more or less similar principles of circuit synthesis and design. However, there is not provided study of real behavior in detail and in most cases electronic control of the various parameters in application is not verified. In the precise design of application is very important to identify problematic features and determine how much it influences functionality of the device. In this work several filtering structures based on common and modified synthesis principles (integrator loops) are compared in the view of multifunctionality, configurability, variability, kind of used electronic control and impact of influences of real elements on behavior. There are used standard methods like adjusting of variable transconductance, intrinsic value of current input resistance and not so common method based on variable current gain in design of modified and improved multifunctional filtering circuits. The last method of mentioned control enabled to find quite unique filter which allows continuous electronic change of transfer from band-reject to all-pass filter of the 2nd order without reconnection. It is much simpler than previous and more common integrator loops. Larger part of this work is focused on electronically controllable oscillators mainly on quadrature types. There is presented several very simply and elementary realizations which require minimal number of active and passive elements. There are also slightly or more complicated solutions which remove some drawbacks of mentioned simpler variants. First of all there is given attention on study of real behavior which make obvious different problems with mutual dependence of oscillation condition and oscillation frequency, dependence of produced amplitudes (quadrature types) on parameter which is controlling oscillation frequency, influence of this parameter on oscillation condition, etc. In the framework of this part of the thesis there was introduced a novel modification of current conveyor transconductance amplifier (CCTA) so called current-gain-controlled current conveyor transconductance amplifier (CGCCCTA). Requirements for novel applications in the field of oscillators for newly developed controllable current amplifier and digitally controllable current amplifier (DACA) at the Department of Telecommunication FEEC BUT lead to creation of several chapters of this work where mentioned active elements can be used. The important contribution of this work (for practical approach) is also experimental testing of most of designed circuits and determination of exact design equations and rules which take into account real behavior of circuits and confirm results obtained from experiments.
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Book chapters on the topic "Multifunctional frequency filter"

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Singh, Karam Bharat, Manoj Joshi, and Ashish Ranjan. "An MOS-C Multifunction Filter Employing DXCCTA for High-Frequency Operation." In Lecture Notes in Electrical Engineering, 133–42. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7031-5_13.

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Kour, Paramjit, and Sudipta Kishore Pradhan. "Perovskite Ferroelectric." In Multifunctional Ferroelectric Materials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98382.

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The spectrums of properties exhibited by ferroelectric materials are dielectric, ferroelectric, piezoelectric and pyroelectric effect. This is the makes these materials to have a wide range of useful application. Infrared detectors are used pyroelectric effect of ferroelectric materials. It is used in nonvolatile memories due to have ferroelectric hysteresis. Its piezoelectric properties make them useful for actuator, radio frequency filter, sensor, and transducer. Ferroelectric capacitors are used, their good dielectric behavior. According to the necessity of the system they are available in different form such as single crystals, ceramics, thin film, and polymer, composite. The diversity of properties ferroelectric materials always attracted the attention of engineers and researchers. Size reduction of this material from micro to nanoscale established an enormous consideration to develop nanotechnology. Its vast use of different filed imposed the in detail research in adding to the development of processing and characterization method. This chapter will put some light on some fundamental principle of ferroelectricity, the list of perovskite materials and their application.
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Conference papers on the topic "Multifunctional frequency filter"

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Paster, Eli, Bryan P. Ruddy, Priam V. Pillai, and Ian W. Hunter. "Conducting Polymer-Based Multifunctional Materials." In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3761.

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Conducting polymers are employable as low-voltage actuators, sensors, energy storage and delivery components, structural elements, computational circuitry, memory, and electronic components, making them a versatile choice for creating integrated, multifunctional materials and devices. Here we show one such conducting polymer-based, multifunctional system, derived from the versatility of the conducting polymer polypyrrole. Three functions of polypyrrole (actuation, length sensation, and energy storage) have been individually evaluated and cooperatively combined in the synthesis of a multifunctional, polymeric system that actuates, senses strain deformation, and stores energy. The system operates whereby the strain of a polypyrrole actuator is measured by a polypyrrole length sensor, whilst being powered by an array of polypyrrole supercapacitors. Independently, polypyrrole actuators were evaluated at 250 discrete frequencies ranging from 0.01 to 10 Hz using fixed, ±1 V sinusoidal excitation. Polypyrrole length sensors were evaluated using a thin-film dynamic mechanical analyzer for the same range of frequencies with a 2% sinusoidal input strain. Polypyrrole supercapacitors were evaluated using cyclic voltammetry (−1.0 V to +1.0 V; 12.5 to 100 mV/sec) and galvanostatic charge-discharge cycling (0.5 to 2 mA/mg). As an actuator, polypyrrole samples showed measureable actuation strain between 0.001% and 1.6% for the frequency range tested, with amplitude versus frequency decay behavior similar to a first-order low-pass filter. As a length sensor, polypyrrole samples showed linearelastic behavior up to 3% strain and gauge factors near 4. As a symmetric supercapacitor, polypyrrole had capacitance values higher than 20 kF/kg, energy densities near 20 kJ/kg, and power densities near 2 kW/kg. The evaluation of each component, independently, justified creating a cooperative system composed of these three components operating simultaneously. Polypyrrole supercapacitors provided ample power to excite polypyrrole actuators. Polypyrrole length sensors attached in series to polypyrrole actuators were capable of measuring strain from coupled polypyrrole actuators. Performance metrics and future possibilities regarding conducting polymer-based multifunctional materials are discussed.
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Mir, Fariha, and Sourav Banerjee. "Performance of a Multifunctional Spiral Shaped Acoustic Metamaterial With Synchronized Low-Frequency Noise Filtering and Energy Harvesting Capability." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2264.

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Abstract Metamaterials are man-made materials that behave uniquely and possess exclusively desired properties that are not found in natural materials. Usually, it is the combination of two or more materials and can be engineered to perform tasks that are not possible with traditional materials. These were initially discovered while working with electromagnetic radiation. Apart from electromagnetic radiation, metamaterials are also capable of affecting the wave propagation characteristics through any fluid such as air. These metamaterials are called acoustic metamaterials. Many acoustic metamaterials have gone beyond its definition but still, characterize the waveguiding properties. Incorporation of smart materials while constructing acoustic metamaterial, can achieve multifunctionality of the design. A prospective application field for such acoustic metamaterials is energy harvesting from low-frequency vibration. It is conceptualized that acoustic metamaterials can be used as noise barrier materials to filter roadside and industrial noise. This application can get extended to the aerospace application where engine noise mitigation inside the cabin is a challenge. In this article, a spiral-shaped acoustic metamaterial is modeled which has a dual function of noise filtering and energy harvesting. This acoustic metamaterial has a comparatively high reflection coefficient closer to the anti-resonance frequencies, resulting in high sound transmission loss. The filtered noise is trapped inside the cell in the form of strain energy. Hence, we claim that if the trapped energy which is any way wasted in the material could be harvested to power the local electronic devices, the new solution could make transformative for the 21st century’s green energy solution. Calculated placement of smart materials in the cell-matrix can help to extract the strain energy in the form of power. The acoustic metamaterial cell presented in this work has the capability of isolating noise and reducing diffraction by trapping sound in low frequencies and at the same time recover the trapped abundant energy in the form of electrical potential using piezoelectric materials. The spiral design is sensitive to vibration due to trampoline shaped attachments inside the cell. This makes it capable of harvesting energy using vibration also. This is a promising acoustoelastic metamaterial with multifunctionality properties for future applications.
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Askari, Davood, and Mehrdad N. Ghasemi-Nejhad. "Mechanical Properties of Matrix Filled Single-Walled Carbon Nanotube Reinforced Nanocomposites." In ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17054.

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It is frequently reported that carbon nanotubes can efficiently be used to reinforce composite materials and considerably improve their structural mechanical properties. Therefore, it is essential to investigate the effective properties of such nanocomposites. In this work, an analytical approach is employed to derive the analytical exact solutions for the effective Young’s modulus and major Poisson’s ratio of a three-phase composite cylinder model representing a matrix filled single-walled carbon nanotube (SWCNT) embedded in another host material. In this study, all three constituents are considered generally cylindrical orthotropic. For validation, results from finite element analysis of an identical 3-D model are compared to those obtained analytically. It is shown that both techniques are in excellent agreement and therefore analytical exact solutions for the prediction of effective axial Young’s modulus and major Poisson’s ratio of the filled SWCNT embedded in another host material and all having orthotropic properties are verified.
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Ben Salem, S., D. Sellami Masmoudi, M. Fakhfakh, M. Loulou, and N. Masmoudi. "High frequency CCII based oscillators and multifunction filters." In International Conference on Design and Test of Integrated Systems in Nanoscale Technology, 2006. DTIS 2006. IEEE, 2006. http://dx.doi.org/10.1109/dtis.2006.1708673.

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Salem, Samir Ben, Dorra Sellami Masmoudi, Ashwek Ben Said, and Mourad Loulou. "An optimized low voltage and High Frequency CCII based multifunction Filters." In 13th IEEE International Conference on Electronics, Circuits and Systems. IEEE, 2006. http://dx.doi.org/10.1109/icecs.2006.379693.

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Jardrit, Peerapat, Winai Jaikla, Surapong Siripogdee, Amornchai Chaichana, Roman Sotner, and Fabian Khateb. "Design of High Input Impedance Voltage-mode Multifunction Biquad Filter with Independent Control of Natural Frequency and Quality Factor." In 2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2020. http://dx.doi.org/10.1109/ecti-con49241.2020.9158266.

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