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Journal articles on the topic 'Universal voltage conveyor'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Pushkar, Kanhaiya Lal, and Kavya Gupta. "MISO-Type Voltage-Mode Universal Biquadratic Filter Using Single Universal Voltage Conveyor." Circuits and Systems 08, no. 09 (2017): 227–36. http://dx.doi.org/10.4236/cs.2017.89015.

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2

Phatsornsiri, Punnavich, Montree Kumngern, and Panit Lamun. "A Voltage-Mode Universal Biquadratic Filter Using DDCCTA." Journal of Circuits, Systems and Computers 25, no. 05 (February 25, 2016): 1650034. http://dx.doi.org/10.1142/s0218126616500341.

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This paper presents a new voltage-mode (VM) universal biquadratic filter using differential difference current conveyor transconductance amplifier (DDCCTA) as an active element. The circuit employs one DDCCTA, two floating resistors and two floating capacitors which can realize five biquadratic filters, namely low-pass (LP), band-pass (BP), band-stop (BS), high-pass (HP) and all-pass (AP) into one single topology. For realizing these filtering functions, passive component-matching conditions, inverting-type and/or doubling-input signal requirements and changing circuit configuration are absent. The natural angular frequency and quality factor of the filter can be orthogonally controlled deliberately. The VM biquadratic filter using grounded passive components with high-input and low-output impedances can be obtained by adding an additional DDCCTA or differential difference current conveyor (DDCC). The simulation results with 0.5[Formula: see text][Formula: see text]m CMOS process from MIETEC are given to confirm the theoretical predictions and the experimental results are also included to verify the workability of the proposed structure.

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3

Maheshwari, Sudhanshu, and Ankita Gangwar. "Versatile Voltage-Mode Universal Filter Using Differential Difference Current Conveyor." Circuits and Systems 02, no. 03 (2011): 210–16. http://dx.doi.org/10.4236/cs.2011.23030.

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4

Pushkar, Kanhaiya Lal. "Single-Resistance Controlled Sinusoidal Oscillator Employing Single Universal Voltage Conveyor." Circuits and Systems 09, no. 01 (2018): 1–7. http://dx.doi.org/10.4236/cs.2018.91001.

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5

Horng, Jiun-Wei, and Zih-Yang Jhao. "Voltage-Mode Universal Biquadratic Filter Using Single DVCC." ISRN Electronics 2013 (March 10, 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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6

Nonthaputha, Thanat, and Montree Kumngern. "Programmable Universal Filters Using Current Conveyor Transconductance Amplifiers." Journal of Circuits, Systems and Computers 26, no. 07 (March 17, 2017): 1750121. http://dx.doi.org/10.1142/s0218126617501213.

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This paper presents new programmable universal biquadratic filters using current conveyor transconductance amplifiers (CCTAs) by which both voltage- and current-mode filters can be obtained. The proposed filters use second-generation current conveyor (CCII) which is the first stage of CCTA to operate as current conveyor analog switch (CCAS) and this CCAS will be used to program the filtering functions such as low-pass, high-pass, band-pass, band-stop and all-pass filters. Unlike previous universal filters, the filtering functions of the proposed filters can be programmed using the bias currents of CCTAs without changing any input and output connections. The natural frequency and quality factor of all filtering functions can be controlled electronically and orthogonally using the bias currents of transconductance amplifiers. Also gain response of all transfer functions can be adjusted. The active and passive sensitivities of the filters are low. The proposed programmable filters have been simulated using 0.18[Formula: see text][Formula: see text]m CMOS process from TSMC. PSPICE simulation results are included to confirm workability of the proposed circuits.

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7

GHALLAB, YEHYA H., WAEL BADAWY, MOHAMED ABOU EL-ELA, and MOHAMED H. EL-SAID. "THE OPERATIONAL FLOATING CURRENT CONVEYOR AND ITS APPLICATIONS." Journal of Circuits, Systems and Computers 15, no. 03 (June 2006): 351–72. http://dx.doi.org/10.1142/s0218126606003118.

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A five-port general-purpose analog building block, termed as an Operational Floating Current Conveyor (OFCC), is described. The OFCC combines the features of current feedback operational amplifier, second-generation current conveyor and operational floating conveyor. An implementation scheme of the OFCC is described and its terminal operational characteristics are used to yield a working device. The OFCC is then used as a single block to realize the current conveyors (CCII+ and CCII-) as well as the four basic amplifiers (i.e., voltage, current, transconductance, and transresistance amplifiers). The applications of the OFCC are presented and discussed. In the field of the analog filter synthesis, we proposed a new active universal second order filter using OFCC. It has three inputs and one output employing two OFCC, two capacitors and three resistors and can realize lowpass, bandpass, highpass, notch, and all pass filters from the same configuration. The proposed universal filters offer the following advantageous features: using active elements for the same type (OFCC). No requirement for component matching or cancellation constraints, which makes the filter easier to design, orthogonal adjustment of ω0 and Q and the circuits have low sensitivity. The simulation and experimental results are obtained and discussed.

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8

Chaturvedi, Bhartendu, Jitendra Mohan, and Atul Kumar. "A New Versatile Universal Biquad Configuration for Emerging Signal Processing Applications." Journal of Circuits, Systems and Computers 27, no. 12 (June 22, 2018): 1850196. http://dx.doi.org/10.1142/s0218126618501967.

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The paper introduces a new versatile universal biquadratic configuration based on two fully differential second generation current conveyors without need of input matching conditions. The proposed circuit consists of two fully differential second generation current conveyors, four resistors and two grounded capacitors. The proposed biquad configuration provides all five standard filtering responses: low-pass, high-pass, band-pass, band-reject and all-pass in voltage-mode, transadmittance-mode, current-mode and transimpedance-mode. The proposed circuit is single-input multiple-outputs type, so all responses are available simultaneously. Moreover, extra inverting amplifier and double-type amplifier are also not required in the proposed circuit for any filtering response. The nonideal and parasitic effects of fully differential second generation current conveyor on the proposed circuit have also been investigated. HSPICE simulation results have been incorporated to validate the proposal.

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9

Pandey, Neeta, and 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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10

Maiti, Saikat, and Radha Raman Pal. "Universal Biquadratic Filter Employing Single Differential Voltage Current Controlled Conveyor Transconductance Amplifier." Lecture Notes on Photonics and Optoelectronics 1, no. 2 (2013): 56–61. http://dx.doi.org/10.12720/lnpo.1.2.56-61.

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11

PANDEY, NEETA, and SAJAL K. PAUL. "MIXED MODE UNIVERSAL FILTER." Journal of Circuits, Systems and Computers 22, no. 01 (January 2013): 1250064. http://dx.doi.org/10.1142/s0218126612500648.

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The configuration with electronic tunable characteristics that can work in mixed mode may be useful from IC realization viewpoint and application adaptability. This paper proposes an electronically tunable mixed mode universal filter based on multiple output current controlled current conveyor (MOCCCII) and this single topology without any alteration can be used in all four modes i.e., voltage (VM), current (CM), transimpedance (TIM) and transadmittance (TAM). The architecture uses four MOCCCIIs and two grounded capacitors; and can realize universal filter functions — low pass (LP), band pass (BP), high pass (HP), notch (NF) and all pass (AP) for all four modes. Moreover the input impedance is high and output impedance is low for voltage signal and vice-versa for current signal, hence the proposed topology is suitable for cascading for all four modes. The workability of the proposed circuit has been verified via SPICE simulations using AMS 0.35 μm CMOS technology.

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12

Jerabek, Jan, Roman Sotner, and Kamil Vrba. "Tiso Adjustable Filter with Controllable Controlled–Gain Voltage Differencing Current Conveyor." Journal of Electrical Engineering 65, no. 3 (May 1, 2014): 137–43. http://dx.doi.org/10.2478/jee-2014-0021.

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Abstract The main aim of this paper is to present solution of triple-input single-output (TISO) filter with independently adjustable pole frequency, quality factor, bandwidth and also gain. Filter is universal, operates in current mode and includes only one active element - the so-called Controlled-Gain Voltage Differencing Current Conveyor (CG-VDCC) with two controllable parameters: transconductance (gm) and gain of output currents (BX ). Implementation of CG-VDCC element in 0.18 μm CMOS technology is also included and this model is used in proposed filter simulations.

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13

Herencsar, Norbert, Jaroslav Koton, and Pavel Hanak. "Universal Voltage Conveyor and its Novel Dual-Output Fully-Cascadable VM APF Application." Applied Sciences 7, no. 3 (March 20, 2017): 307. http://dx.doi.org/10.3390/app7030307.

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14

Roy, Suvajit, Tapas Kumar Paul, Saikat Maiti, and Radha Raman Pal. "Voltage Differencing Current Conveyor Based Voltage-Mode and Current-Mode Universal Biquad Filters with Electronic Tuning Facility." International Journal of Engineering and Technology Innovation 11, no. 2 (April 1, 2021): 146–60. http://dx.doi.org/10.46604/ijeti.2021.6821.

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The objective of this study is to present four new universal biquad filters, two voltage-mode multi-input-single-output (MISO), and two current-mode single-input-multi-output (SIMO). The filters employ one voltage differencing current conveyor (VDCC) as an active element and two capacitors along with two resistors as passive elements. All the five filter responses, i.e., high-pass, low-pass, band-pass, band-stop, and all-pass responses, are obtained from the same circuit topology. Moreover, the pole frequency and quality factor are independently tunable. Additionally, they do not require any double/inverted input signals for response realization. Furthermore, they enjoy low active and passive sensitivities. Various regular analyses support the design ideas. The functionality of the presented filters are tested by PSPICE simulations using TSMC 0.18 µm technology parameters with ± 0.9 V supply voltage. The circuits are also justified experimentally by creating the VDCC block using commercially available OPA860 ICs. The experimental and simulation results agree well with the theoretically predicted results.

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15

Abuelma'atti, Muhammad Taher, and Azhar Quddus. "Programmable Current-Conveyor-Based Voltage-Mode Filter with Single Input and Five Outputs." Active and Passive Electronic Components 18, no. 4 (1995): 273–78. http://dx.doi.org/10.1155/1995/67547.

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A new universal voltage-mode active-filter with single input and five outputs is presented. The parameters of the proposed filter are programmable and the filter uses grounded capacitors and resistors. The proposed circuit can simultaneously realize lowpass, highpass, bandpass, allpass, and notch biquadratic filter functions and enjoys low temperature sensitivities.

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16

Siripruchyanun, M., and W. Jaikla. "Three-Input Single-Output Electronically Controllable Dual-Mode Universal Biquad Filter Using DO-CCCIIs." Active and Passive Electronic Components 2007 (2007): 1–6. http://dx.doi.org/10.1155/2007/36849.

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This article presents a dual-mode (voltage-mode and current-mode) universal biquadratic filter performing completely standard functions: lowpass, highpass, bandpass, band-reject, and allpass functions, based on plus-type dual-output second-generation, current controlled, current conveyor (DO-CCCII+). The features of the circuit are that the bandwidth and natural frequency can be tuned electronically via the input bias currents: the circuit description is very simple, consisting of merely 2 DO-CCCIIs and 2 capacitors: the circuit can provide either the voltage-mode or current-mode filter without changing circuit topology. Additionally, each function response can be selected by suitably selecting input signals with digital method. Without any external resistors, the proposed circuit is very suitable to further develop into an integrated circuit. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation. The maximum power consumption is approximately 1.81 mW at±1.5 V supply voltages.

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17

Pandey, Neeta, and Sajal K. Paul. "Differential Difference Current Conveyor Transconductance Amplifier: A New Analog Building Block for Signal Processing." Journal of Electrical and Computer Engineering 2011 (2011): 1–10. http://dx.doi.org/10.1155/2011/361384.

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A new active building block for analog signal processing, namely, differential difference current conveyor transconductance amplifier (DDCCTA), is presented, and performance is checked through PSPICE simulations which show the usability of the proposed element is up to 201 MHz. The proposed block is implemented using 0.25 μm TSMC CMOS technology. Some of the applications are presented using the proposed DDCCTA, namely, a voltage mode multifunction filter, a current mode universal filter, an oscillator, current and voltage amplifiers, and grounded inductor simulator. The feasibility of DDCCTA and its applications is confirmed via PSPICE simulations.

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18

SOLIMAN, AHMED M. "ON THE DVCC AND THE BOCCII AS ADJOINT ELEMENTS." Journal of Circuits, Systems and Computers 18, no. 06 (October 2009): 1017–32. http://dx.doi.org/10.1142/s0218126609005514.

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The Differential Voltage Current Conveyor (DVCC) with its two polarities namely DVCC- and DVCC+ are reviewed together with their pathological element representations. Their two adjoint building blocks are the Balanced Output Current Conveyor (BOCCII) and the Balanced Output Inverting Current Conveyor (BOICCII) are also discussed with their pathological element representations. The universal CMOS circuit realizing these four building blocks is also included. The Nodal Admittance Matrix (NAM) stamp for the DVCC-, DVCC+, BOCCII and BOICCII are also given. Among the four basic building blocks considered the DVCC- is the only floating building block. Examples are given showing that some of the reported filters are related to each other by the adjoint network theorem.

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19

Chaturvedi, Bhartendu, Jitendra Mohan, Atul Kumar, and Kirat Pal. "Current-Mode First-Order Universal Filter and its Voltage-Mode Transformation." Journal of Circuits, Systems and Computers 29, no. 09 (December 3, 2019): 2050149. http://dx.doi.org/10.1142/s0218126620501492.

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This paper deals with the realization of current-mode first-order universal filter based on multiple output second generation current conveyor (MO-CCII). Two MO-CCIIs, one resistor and one capacitor are used in the circuit realization. The proposed work includes additional features such as ease of cascadability, easily implementable in modern integrated circuit technology and no requirement of passive components matching condition. The additional beauty of the proposed filter structure is that all three responses can also be realized by interchanging the positions of passive components as well. Moreover, a possible transformation of the proposed current-mode type universal filter into a voltage-mode type universal filter using network transpose method is also explored. The possibility of mode transformation further expands the scope of proposed idea. The theoretical aspects are verified using cadence VIRTUOSO simulation results.

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20

COMEDANG, TADA, and PATTNA INTANI. "A ± 0.2 V, 0.12 μW CCTA USING VTMOS AND AN APPLICATION FRACTIONAL-ORDER UNIVERSAL FILTER." Journal of Circuits, Systems and Computers 23, no. 09 (August 25, 2014): 1450126. http://dx.doi.org/10.1142/s0218126614501266.

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In this paper, a variable threshold voltage metal oxide semiconductor (VTMOS) field effect transistor is used to improve an ultra-low voltage, ultra-low power current conveyor transconductance amplifier (CCTA). To achieve the desired result, an analytical subthreshold VTMOS model is used. Designs that utilize the TSMC 0.18 μm technology are verified using PSPICE simulation. The power consumption is simply 0.12 μW at a ± 0.2 V supply voltage. The proposed CCTA is synthesized using fractional-order (FO) universal filters that can simultaneously realise low pass (LP), high pass (HP) and bandpass (BP) responses with independent control of quality factor and pole frequency by transconductances (gm). Moreover, the circuit has low input and high output impedance which would be an ideal choice for cascading in current-mode circuit. The FO filters are constructed using two FO capacitors of orders α and β (0 < α, β ≤ 1). The FO filters provide improved performance in terms of pole frequency compared with conventional-order filters. The filter has a low power consumption of 0.71 μW at a ± 0.2 V supply voltage. The validity of the proposed filter is verified through PSPICE simulations.

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21

Chang, Chun-Ming, M. N. S. Swamy, and Ahmed M. Soliman. "Analytical synthesis of voltage-mode even/odd-nth-order differential difference current conveyor and fully differential current conveyor II-grounded resistor and capacitor universal filter structures." International Journal of Circuit Theory and Applications 43, no. 10 (September 19, 2014): 1263–310. http://dx.doi.org/10.1002/cta.2011.

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22

Faseehuddin, Mohammad, Norbert Herencsar, Musa Ali Albrni, and Jahariah Sampe. "Electronically Tunable Mixed-Mode Universal Filter Employing a Single Active Block and a Minimum Number of Passive Components." Applied Sciences 11, no. 1 (December 23, 2020): 55. http://dx.doi.org/10.3390/app11010055.

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A recently developed active building block, namely Voltage Differencing Extra X Current Conveyor (VD-EXCCII), is employed in the design of multi input single output (MISO), electronically tunable mixed-mode universal filter. The filter provides low pass (LP), high pass (HP), band pass (BP), band reject (BR) and all pass (AP) responses in current-mode (CM), voltage-mode (VM), trans-impedance-mode (TIM) and trans-admittance-mode (TAM). The filter employs a single VD-EXCCII, three resistors and two capacitors. Additionally, a CM single input multi output (SIMO) filter can be derived from the same circuit topology by only adding current output terminals. The attractive features of the filter include: (i) the ability to operate in all four modes, (ii) the tunability of the Q factor independent of pole frequency, (iii) the low output impedance for the VM filter, (iv) the high output impedance current output for CM and TAM filters and (v) no requirement for double/negative input signals (voltage/current) for response realization. The VD-EXCCII and its layout is designed and validated in Cadence Virtuoso using 0.18 µm pdk from Silterra Malaysia with a supply voltage of ±1.25 V. The operation of the filter is examined at the 8.0844 MHz characteristic frequency. A non-ideal parasitic and sensitivity analysis is also carried out to study the effect of process and components spread on the filter performance.

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23

Chen, Hua‐Pin. "High‐input impedance voltage‐mode differential difference current conveyor transconductance amplifier‐based universal filter with single input and five outputs using only grounded passive components." IET Circuits, Devices & Systems 8, no. 4 (July 2014): 280–90. http://dx.doi.org/10.1049/iet-cds.2013.0162.

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24

Koton, Jaroslav, Norbert Herencsár, and Kamil Vrba. "KHN-equivalent voltage-mode filters using universal voltage conveyors." AEU - International Journal of Electronics and Communications 65, no. 2 (February 2011): 154–60. http://dx.doi.org/10.1016/j.aeue.2010.02.005.

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25

LIU, SHEN-IUAN, and JIIN-LONG LEE. "Voltage-mode universal filters using two current conveyors." International Journal of Electronics 82, no. 2 (February 1997): 145–50. http://dx.doi.org/10.1080/002072197136147.

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26

MINARCIK, M., and K. VRBA. "Single-Input Six-Output Voltage-Mode Filter Using Universal Voltage Conveyors." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E91-A, no. 8 (August 1, 2008): 2035–37. http://dx.doi.org/10.1093/ietfec/e91-a.8.2035.

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27

Ranjan, Ashish, and Sajal K. Paul. "Voltage Mode Universal Biquad Using CCCII." Active and Passive Electronic Components 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/439052.

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This paper proposes a multi-input single-output (MISO) second-order active-C voltage mode (VM) universal filter using two second-generation current-controlled current conveyors (CCCIIs) and two equal-valued capacitors. The proposed circuit realizes low pass, band pass, high pass, all pass, and notch responses from the same topology. The filter uses-minimum number of passive components and no resistor which is suitable for IC Design. The filter enjoys low-sensitivity performance and exhibits electronic and orthogonal tunability of pole frequency () and quality factor () via bias current of CCCIIs. PSPICE simulation results confirm the theory.

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28

CHEN, HUA-PIN. "VERSATILE VOLTAGE-MODE DDCC-BASED UNIVERSAL FILTER." Journal of Circuits, Systems and Computers 20, no. 04 (June 2011): 681–96. http://dx.doi.org/10.1142/s0218126611007542.

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A novel versatile three-input five-output universal voltage-mode filter employing two differential difference current conveyors, two grounded capacitors and three resistors is proposed. The proposed configuration can be used as either a single-input five-output or three-input two-output. Unlike the previously reported works, it can simultaneously realize five different generic signals: low-pass, band-pass, high-pass, notch and all-pass. Moreover, the proposed circuit still offers the following advantages: (i) the employment of two grounded capacitors, (ii) no need to employ inverting-type input signals, (iii) no need to impose component choice, (iv) orthogonal control of the resonance angular frequency ωo and the quality factor Q and (v) low active and passive sensitivity performances.

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29

Koton, J., N. Herencsár, and K. Vrba. "Single-input three-output variable Q and 𝛚0filters using universal voltage conveyors." International Journal of Electronics 97, no. 5 (May 2010): 531–38. http://dx.doi.org/10.1080/00207210903486864.

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30

Afzal, Neelofer, and 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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31

Chang, C. M., and M. S. Lee. "Universal voltage-mode filter with three inputs and one output using three current conveyors and one voltage follower." Electronics Letters 30, no. 25 (December 8, 1994): 2112–13. http://dx.doi.org/10.1049/el:19941463.

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32

Tonk, Anu, and Neelofer Afzal. "A new low-voltage universal filter realisation using bulk-driven second generation current conveyors." Australian Journal of Electrical and Electronics Engineering 16, no. 4 (August 9, 2019): 256–65. http://dx.doi.org/10.1080/1448837x.2019.1653247.

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33

LEE, CHEN-NONG. "FULLY CASCADABLE MIXED-MODE UNIVERSAL FILTER BIQUAD USING DDCCS AND GROUNDED PASSIVE COMPONENTS." Journal of Circuits, Systems and Computers 20, no. 04 (June 2011): 607–20. http://dx.doi.org/10.1142/s0218126611007499.

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A fully cascadable (i.e., low/high input impedance for current/voltage input signals and high/low output impedance for current/voltage output signals) mixed-mode (input and output signals can be voltage or current) universal filter biquad by using three differential difference current conveyors (DDCCs), three grounded resistors, and two grounded capacitors is presented in this paper. The proposed biquad can realize the inverting, non-inverting, and differential types universal filtering responses (lowpass, highpass, bandpass, notch, and allpass) from the voltage and current output terminals without changing the filter topology. The proposed circuit is suitable for cascading in all the four possible modes (i.e., voltage, current, transresistance, and transconductance modes). Moreover, the proposed mixed-mode biquad still enjoys (i) using only grounded passive components, (ii) no need of extra inverting and non-inverting amplifiers for special input signals, and (iii) low active and passive sensitivities. This paper also shows how analytical synthesis can be used to produce the proposed mixed-mode filter circuit. H-Spice simulation results confirm the theory.

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34

Reginaldo de Britto, Jonas, Fábio Vincenzi Romualdo da Silva, Ernane Antônio Alves Coelho, Luiz Carlos de Freitas, Valdeir José Farias, and João Batista Vieira Júnior. "Proposal Of A Dc-dc Converter Used In Photovoltaic Systems And Utility Power Grid For The Universal Voltage Range." Eletrônica de Potência 14, no. 3 (August 1, 2009): 165–72. http://dx.doi.org/10.18618/rep.2009.3.165172.

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35

Chang, C. M., and M. S. Lee. "Comment: Universal voltage-mode filter with three inputs and one output using three current conveyors and one voltage follower." Electronics Letters 31, no. 5 (March 2, 1995): 353. http://dx.doi.org/10.1049/el:19950246.

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36

Abaci, Ahmet, and Erkan Yuce. "Second-Order Voltage-Mode Universal Filters Using Two DVCCs, Two Grounded Capacitors and Four Resistors." Journal of Circuits, Systems and Computers 25, no. 12 (September 2, 2016): 1650154. http://dx.doi.org/10.1142/s0218126616501541.

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In this paper, two new second-order voltage-mode universal filters are proposed. Both of the proposed filters use only two differential voltage current conveyors (DVCCs), four resistors and two grounded capacitors which are advantageous from integrated circuit technology point of view. They can simultaneously provide second-order low-pass, high-pass, band-pass, notch and all-pass responses. They offer orthogonal control of angular resonance frequency and quality factor. However, they have a single matching condition for only all-pass responses. A number of simulations based on SPICE program are accomplished in order to demonstrate the performance of both filters.

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37

Safari, Leila, Gianluca Barile, Giuseppe Ferri, and Vincenzo Stornelli. "A New Low-Voltage Low-Power Dual-Mode VCII-Based SIMO Universal Filter." Electronics 8, no. 7 (July 9, 2019): 765. http://dx.doi.org/10.3390/electronics8070765.

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In this paper, a new low-voltage low-power dual-mode universal filter is presented. The proposed circuit is implemented using inverting current buffer (I-CB) and second-generation voltage conveyors (VCIIs) as active building blocks and five resistors and three capacitors as passive elements. The circuit is in single-input multiple-output (SIMO) structure and can produce second-order high-pass (HP), band-pass (BP), low-pass (LP), all-pass (AP), and band-stop (BS) transfer functions. The outputs are available as voltage signals at low impedance Z ports of the VCII. The HP, BP, AP, and BS outputs are also produced in the form of current signals at high impedance X ports of the VCIIs. In addition, the AP and BS outputs are also available in inverting type. The proposed circuit enjoys a dual-mode operation and, based on the application, the input signal can be either current or voltage. It is worth mentioning that the proposed filter does not require any component matching constraint and all sensitivities are low, moreover it can be easily cascadable. The simulation results using 0.18 μm CMOS technology parameters at a supply voltage of ±0.9 V are provided to support the presented theory.

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38

Koton, Jaroslav, David Kubanek, Ondrej Sladok, Kamil Vrba, Aleksandr Shadrin, and Peter Ushakov. "Fractional-Order Low- and High-Pass Filters Using UVCs." Journal of Circuits, Systems and Computers 26, no. 12 (August 2017): 1750192. http://dx.doi.org/10.1142/s0218126617501924.

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In this paper, the application of universal voltage conveyors in the design of fractional-order frequency filters is presented. Using the continued fraction expansion approach, circuit solutions approximating the low- and high-pass fractional transfer function are proposed, analyzed and their behavior verified both by simulations and experimental measurements. The considered order of the filters is [Formula: see text], where [Formula: see text]. The proposed filters operate in the voltage-mode, are of minimal configuration and are easy to be connected in cascade as their output impedance is low, zero in theory.

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Parvizi, Mostafa, Abouzar Taghizadeh, Hamid Mahmoodian, and Ziaadin Daei Kozehkanani. "A Low-Power Mixed-Mode SIMO Universal Gm–C Filter." Journal of Circuits, Systems and Computers 26, no. 10 (March 24, 2017): 1750164. http://dx.doi.org/10.1142/s021812661750164x.

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This paper describes a new single-input multiple-output (SIMO) mixed-mode universal biquad [Formula: see text]–[Formula: see text] filter. It can realize all kinds of filter responses including high-pass, band-pass, low-pass, band-stop and all-pass filters, simultaneously. Moreover, in this structure, all of these filters in all states of voltage mode, current mode, transresistance mode and transconductance mode are achieved by the same topology without any convertor. The proposed filter employs three operational transconductance amplifiers (OTAs) with four inputs and one output, three fully differential OTAs and two grounded capacitors. In other words, this filter is composed of six [Formula: see text] blocks and two grounded capacitors. The grounded capacitors are suitable for integrated circuit implementation. In order to reduce the power consumption, the OTAs are biased in subthreshold region. In addition, sensitivity analysis is included to show the low active and passive sensitivity performances of the filter. This filter is designed and simulated in HSPICE with 0.18[Formula: see text][Formula: see text]m model CMOS technology parameters. The simulation results show that the filter consumes only 75[Formula: see text][Formula: see text]W and operates at 1.5[Formula: see text]MHz with [Formula: see text]0.5[Formula: see text]V supply voltages and capacitors [Formula: see text][Formula: see text]pF.

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Toker, A. "A new approach for the realization of voltage-mode second-order universal filters using current conveyors." Microelectronics Journal 30, no. 12 (December 1999): 1249–53. http://dx.doi.org/10.1016/s0026-2692(99)00049-x.

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Lee, Chen-Nong. "Mixed-Mode Universal Biquadratic Filter with No Need of Matching Conditions." Journal of Circuits, Systems and Computers 25, no. 09 (June 21, 2016): 1650106. http://dx.doi.org/10.1142/s0218126616501061.

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None of the previously reported mixed-mode universal filters can achieve the following important advantage: no need of component matching conditions. This paper presents a new mixed-mode (including voltage, current, transadmittance, and transimpedance modes) universal biquadratic filter with no need of matching conditions (including no need of component matching and no need of input matching conditions). The proposed filter structure with nine outputs employs two plus-type fully differential current conveyors (P-type FDCCIIs), two grounded capacitors, four grounded resistors and one floating/grounded resistor, which can realize voltage, current, transadmittance, and transimpedance modes universal filtering responses (lowpass, highpass, bandpass, notch, and allpass) from the same topology without matching conditions. Moreover, the proposed circuit still offers many important advantages: the employment of two grounded capacitors, the simultaneous realizations of a lot of filtering functions, using only grounded resistors as the control factors of all filter parameters and gains, having controllable gains in current and transimpedance modes without disturbing filter parameters [Formula: see text], [Formula: see text]/Q, and Q, cascadably connecting the former voltage-mode (VM) stage and the latter current-mode (CM) stage, no capacitors bringing extra poles degrading high-frequency performance, and low active and passive sensitivity performances. H-spice simulations with TSMC 0.18[Formula: see text][Formula: see text]m 1[Formula: see text]P6M CMOS process technology validate theoretical predictions.

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LEE, CHEN-NONG. "VERSATILE UNIVERSAL CURRENT-MODE AND TRANSRESISTANCE-MODE BIQUADRATIC FILTER USING TWO MOCCIIS AND GROUNDED PASSIVE COMPONENTS." Journal of Circuits, Systems and Computers 22, no. 01 (January 2013): 1250077. http://dx.doi.org/10.1142/s0218126612500776.

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This paper presents a versatile universal current-mode and transresistance-mode biquadratic filter using only two multiple outputs second-generation current conveyors (MOCCIIs), two grounded capacitors, and three grounded resistors. The proposed configuration can realize all five standard filtering functions from one current-output terminal and one voltage-output terminal, and also provide all these filtering functions from different current-output and voltage-output terminals without changing the filter topology. Moreover, the proposed biquad filter still achieves many advantages like the employment of all grounded passive components, and the minimum number of active component counts, in addition to having no need of inverting-type input signals or double-type input signals for the use of special input signals, high output impedance and low sensitivity performance. H-Spice simulation results confirm the theory.

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CHEN, HUA-PIN, and KUO-HSIUNG WU. "NOVEL VOLTAGE-MODE MULTIFUNCTION FILTER USING ONLY TWO DDCCs." Journal of Circuits, Systems and Computers 17, no. 06 (December 2008): 1161–72. http://dx.doi.org/10.1142/s0218126608004769.

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A new voltage-mode biquad with four inputs and four outputs using only two differential difference current conveyors (DDCCs), two grounded capacitors, and two resistors is proposed. The proposed circuit can act as a multifunction voltage-mode filter with one or three inputs and four outputs and can perform simultaneous realization of voltage-mode notch, highpass, bandpass, and lowpass filter signals from the four output terminals, respectively, without any component choice conditions. On the other hand, it also can act as a universal voltage-mode filter with four inputs and a single output and can realize five generic voltage-mode filter signals from the same configuration without any component-matching conditions. Finally, to verify our architecture, we have designed this analog filter chip with TSMC 0.35 μm 2P4M CMOS technology. This chip operates to 1.125 MHz and consumes 30.95 mW. The chip area of the analog filter is about 0.822 mm2.

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HORNG, JIUN-WEI, CHI-CHE TSAI, and MAW-HUEI LEE. "Novel universal voltage-mode biquad filter with three inputs and one output using only two current conveyors." International Journal of Electronics 80, no. 4 (April 1996): 543–46. http://dx.doi.org/10.1080/002072196137174.

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Horng, Jiun-Wei, Chun-Li Kaewpoonsuk, Chun-Ming Chang, Hung-Pin Chou, and Chun-Ta Lin. "High Input Impedance Voltage-Mode Universal Biquadratic Filter with One Input and Five Outputs Using Current Conveyors." Circuits, Systems & Signal Processing 25, no. 6 (December 2006): 767–77. http://dx.doi.org/10.1007/s00034-005-1227-z.

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Abaci, Ahmet, and Erkan Yuce. "A New DVCC+ Based Second-Order Current-Mode Universal Filter Consisting of Only Grounded Capacitors." Journal of Circuits, Systems and Computers 26, no. 09 (April 24, 2017): 1750130. http://dx.doi.org/10.1142/s0218126617501304.

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In this paper, a new second-order current-mode universal filter using only two plus-type differential voltage current conveyors, three resistors and two grounded capacitors is proposed. The proposed circuit with two identical inputs and three outputs can simultaneously provide second-order high output impedance low-pass, band-pass and notch filter responses. Also, it can realize high-pass and all-pass filter responses with interconnection of relevant output currents. It can be easily tuned electronically. It can be operated properly at high frequencies. A number of simulations based on SPICE program and an experimental test are achieved in order to demonstrate the performance of the proposed filter.

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ALPASLAN, HALIL, and ERKAN YUCE. "BANDWIDTH EXPANSION METHODS OF INDUCTANCE SIMULATOR CIRCUITS AND VOLTAGE-MODE BIQUADS." Journal of Circuits, Systems and Computers 20, no. 03 (May 2011): 557–72. http://dx.doi.org/10.1142/s0218126611007451.

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In this paper, novel low and high frequency performance improvement techniques are proposed. High frequency performance improvement method is based on the single pole effect reduction/completely elimination by creating a corresponding zero while a low one is based on reduction/elimination of Z terminal parasitic resistors. Therefore, two grounded capacitance multipliers, three grounded inductor simulators, a floating inductor and a voltage-mode (VM) universal filter using second-generation current conveyors (CCIIs) are used to explain the developed methods. One of the grounded inductor simulators, floating simulated inductor and VM biquad are novel. Further, both of the new simulated inductors use a grounded capacitor; accordingly, they are suitable for IC fabrication. However, all the proposed circuits need a single matching condition. A number of simulations through PSPICE program and experimental tests are accomplished to demonstrate the workability, performance and effectiveness.

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Uttaphut, Prungsak. "Simple Three-Input Single-Output Current-Mode Universal Filter Using Single VDCC." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 6 (December 1, 2018): 4932. http://dx.doi.org/10.11591/ijece.v8i6.pp4932-4940.

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This paper presents a second-order current-mode filter with three-inputs and single-output current using single voltage differencing current conveyors (VDCC) along with one resistor and two grounded capacitors. The design of presented filter emphasizes on the use of a single active element without the multiple terminals VDCC which is convenient to implement the VDCC using commercially available IC for the practical test. Also, it can reduce the current tracking error at current output port and can reduce the number of transistor in the VDCC. The proposed filter can realize all the five generic filter responses, namely, band-pass (BP), band-reject (BR), low-pass (LP), high-pass (HP), and all-pass (AP) functions from the same configuration under various conditions in terms of three input current signals. Furthermore, the natural frequency and quality factor are electronically controlled. The output current node exhibits high impedance. Besides, the non-ideal case is also investigated. The simulation and experimental results using VDCC constructed from commercially available IC can validate the theoretical analyses.

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Kumar, Ashok, and Sajal K. Paul. "DX-MOCCII Based Fully Cascadable Second Order Current-Mode Universal Filter." Journal of Circuits, Systems and Computers 27, no. 07 (March 26, 2018): 1850113. http://dx.doi.org/10.1142/s021812661850113x.

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The paper presents a new second-order single input multiple output (SIMO) type current mode (CM) universal filter. The proposed circuit uses two dual-X second generation multi-output current conveyors (DX-MOCCII), two grounded capacitors and three grounded resistors. The circuit configuration realizes low-pass filter (LPF), high-pass filter (HPF), band-pass filter (BPF), notch filter (NF) and all-pass filter (APF) responses simultaneously at different output terminals. The new circuit enjoys the features of low input impedance and high output impedance, which is desirable and useful for cascadability in CM circuits. For realizing the universal filter responses, the proposed circuit configuration does not require matching constraint of passive components and both active and passive sensitivities are found low. In addition, the extension of the proposed circuit as a resistorless universal filter has also been presented. As an application of the proposed filter, inverting band pass output is connected to a negative unity gain current follower in a close loop to design voltage and CM multiphase sinusoidal oscillators (MSOs). Comparison of the proposed configuration with available literature is given. The PSPICE simulation of the filter and its application as MSO are performed to verify the agreement with the theoretical proposition.

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Chen, Hua-Pin. "Versatile Tunable Current-Mode Universal Biquadratic Filter Using MO-DVCCs and MOSFET-Based Electronic Resistors." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/515348.

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This paper presents a versatile tunable current-mode universal biquadratic filter with four-input and three-output employing only two multioutput differential voltage current conveyors (MO-DVCCs), two grounded capacitors, and a well-known method for replacement of three grounded resistors by MOSFET-based electronic resistors. The proposed configuration exhibits high-output impedance which is important for easy cascading in the current-mode operations. The proposed circuit can be used as either a two-input three-output circuit or a three-input single-output circuit. In the operation of two-input three-output circuit, the bandpass, highpass, and bandreject filtering responses can be realized simultaneously while the allpass filtering response can be easily obtained by connecting appropriated output current directly without using additional stages. In the operation of three-input single-output circuit, all five generic filtering functions can be easily realized by selecting different three-input current signals. The filter permits orthogonal controllability of the quality factor and resonance angular frequency, and no inverting-type input current signals are imposed. All the passive and active sensitivities are low. Postlayout simulations were carried out to verify the functionality of the design.

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