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Journal articles on the topic 'Filters with conveyors'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Soliman, Ahmed M. "Two Integrator Loop Filters: Generation Using NAM Expansion and Review." Journal of Electrical and Computer Engineering 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/108687.

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Systematic synthesis method to generate a family of two integrator loop filters based on nodal admittance matrix (NAM) expansion is given. Eight equivalent circuits are obtained; six of them are new. Each of the generated circuits uses two grounded capacitors and employs two current conveyors (CCII) or two inverting current conveyors (ICCII) or a combination of both. The NAM expansion is also used to generate eight equivalent grounded passive elements two integrator loop filters using differential voltage current conveyor (DVCC); six of them are new. Changing the input port of excitation, two new families of eight unity gain lowpass filter circuits each using two CCII or ICCII or combination of both or two DVCC are obtained.

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2

Horng, Jiun-Wei, Chun-Yang Tsai, Te-Chi Chen, and Chang-Ming Wu. "High Input Impedances Voltage-mode First-order Filters with Grounded Capacitors using CCIIs." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 1 (February 20, 2020): 64–68. http://dx.doi.org/10.2174/2213111607666190617150053.

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Background: Three high input impedances voltage-mode first-order filters are presented. Methods: The first proposed circuit uses one multi-output second-generation current conveyor, two resistors and one grounded capacitor. The second proposed circuit uses two second-generation current conveyors, three resistors and one grounded capacitor. The third proposed circuit uses one multi-output second-generation current conveyor, one resistor and two grounded capacitors. Results: First-order lowpass and allpass filters can be simultaneously obtained in the first proposed circuit. First-order lowpass, highpass and allpass filters can be simultaneously obtained in the second proposed circuit. The third proposed circuit can realize first-order allpass filter. Conclusion: All the proposed circuits have the advantages of high input impedances and using only grounded capacitors.

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3

Abuelma'atti, Muhammad Taher. "Programmable Current-Mode Universal Active Filters Employing Current Conveyors." Active and Passive Electronic Components 21, no. 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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4

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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5

Chun-Ming Chang. "Multifunction biquadratic filters using current conveyors." IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 44, no. 11 (1997): 956–58. http://dx.doi.org/10.1109/82.644049.

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6

Çiçekoğlu, Oğuzhan. "Multifunction filters using three current conveyors." Microelectronics Journal 30, no. 1 (January 1999): 15–18. http://dx.doi.org/10.1016/s0026-2692(98)00066-4.

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7

Nakai, Kazuhiro, and Gaishi Yamamoto. "Universal biquadratic filters using current conveyors." Electronics and Communications in Japan (Part III: Fundamental Electronic Science) 80, no. 1 (January 1997): 1–16. http://dx.doi.org/10.1002/(sici)1520-6440(199701)80:1<1::aid-ecjc1>3.0.co;2-v.

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8

Kumngern, Montree. "One-Input Three-Output Current-Mode Universal Filter Using Translinear Current Conveyors." IJITEE (International Journal of Information Technology and Electrical Engineering) 2, no. 4 (May 23, 2019): 101. http://dx.doi.org/10.22146/ijitee.40843.

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This paper presents a new current-mode universal filter with one-input three-output employing three translinear current conveyors and two grounded capacitors. The proposed filter provides low-pass, band-pass, high-pass current response with high output impedance output which can be directly connected for current-mode circuit. The band-pass and all-pass filters can also be obtained. The parameters wo and Q can be controlled separately and electronically by the bias currents of current conveyors. For realizing all filtering functions, no passive and active matching conditions are required. The active and passive sensitivities are low. The characteristic of the proposed circuit can be confirmed by SPICE simulations.

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9

Ikeda, Katsuji, and Yasushi Tomita. "Synthesis of biquadratic filters from current conveyors." Electronics and Communications in Japan (Part II: Electronics) 76, no. 2 (1993): 83–92. http://dx.doi.org/10.1002/ecjb.4420760209.

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10

YUCE, ERKAN, and SEZAI TOKAT. "DESIGN AND STABILITY ANALYSIS OF MIXED-MODE FILTERS CONTAINING ONLY GROUNDED CAPACITORS." Journal of Circuits, Systems and Computers 19, no. 06 (October 2010): 1345–63. http://dx.doi.org/10.1142/s0218126610006864.

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In this paper, three dual-mode (mixed-mode) analog filters using only grounded capacitors and two to three second-generation current conveyors (CCIIs) are presented. The first proposed filter can provide a transimpedance-mode (TIM) second-order filter transfer function (TF), and is free from passive component matching constraints, which is advantageous in integrated circuit (IC) design. Other two mixed-mode filters having the property of tunability are derived from the first proposed filter. However, the developed filters in this work, like other active filters, suffer from nonidealities such as nonideal gain and parasitic impedance effects which increase the order of the filter TFs; accordingly, stability problem may arise. In this study, stability analysis using gain and phase margins is accomplished. To explain the claimed ideas, several computer simulations and an experimental test are performed.

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11

Pal, Kirat, and Seema Rana. "Some New First-Order All-Pass Realizations Using CCII." Active and Passive Electronic Components 27, no. 2 (2004): 91–94. http://dx.doi.org/10.1080/0882751031000116188.

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Some new first-order all-pass filters using a second-generation current conveyor are reported. Two circuits have higher input impedance than reported very recently and use a grounded capacitor. Additionally two more circuits have been reported, one of which has minimum passive and active components and has the facility of single resistance tuning. The other circuit has high input impedance and uses two current conveyors but has one passive component less than the similar circuits reported earlier.

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12

Cicekoglu, O. "Comments on "Multifunction biquadratic filters using current conveyors"." IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 46, no. 5 (May 1999): 658–59. http://dx.doi.org/10.1109/82.769819.

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13

Abuelma'Atti, Muhammad Taher. "New current-mode-active filters employing current conveyors." International Journal of Circuit Theory and Applications 21, no. 1 (January 1993): 93–99. http://dx.doi.org/10.1002/cta.4490210107.

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14

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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15

Laoudias, Costas, and Costas Psychalinos. "Comparative Study of Resistorless Filters Using Differential Voltage Current Controlled Current Feedback Operational Amplifiers and Differential Voltage Current Controlled Current Conveyors." ISRN Electronics 2013 (September 23, 2013): 1–7. http://dx.doi.org/10.1155/2013/910170.

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Differential Voltage Current Controlled Current Feedback Operational Amplifier is an attractive active element for realizing resistorless filters with a minimum active component count. This is verified through a design example, where a 3rd-order leapfrog filter has been realized using the AMS 0.35 μm CMOS process design kit. The performance of the Differential Voltage Current Controlled Current Feedback Operational Amplifier filter is evaluated and compared with that obtained by the corresponding filter, where Differential Voltage Current Controlled Current Conveyors have been employed.

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16

Šotner, Roman, Zdeněk Hruboš, Břetislav Ševčík, Josef Slezák, Jiří Petržela, and Tomáš Dostál. "An Example of Easy Synthesis of Active Filter and Oscillator using Signal Flowgraph Modification and Controllable Current Conveyors." Journal of Electrical Engineering 62, no. 5 (September 1, 2011): 258–66. http://dx.doi.org/10.2478/v10187-011-0041-z.

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An Example of Easy Synthesis of Active Filter and Oscillator using Signal Flowgraph Modification and Controllable Current Conveyors The paper deals with synthesis of active frequency filters and oscillators for applications in the video band. The synthesis is based on the modified signal flow graph design approach in the current mode. The commercially available high frequency current conveyors and second order structures are used. Basic structure is employing loss-less and lossy current mode integrators in two distributed feedback loops. Some of the used active elements allow to control current gain which is very useful in applications. High frequency multi-functional filter and electronically adjustable quadrature oscillator configurations are discussed. Most of the used passive elements (mainly capacitors) are grounded which is suitable for IC implementation. Simulation and experimental results demonstrate function and features very well.

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17

Wu, J., and E. El-Masry. "Current-mode ladder filters using multiple output current conveyors." IEE Proceedings - Circuits, Devices and Systems 143, no. 4 (1996): 218. http://dx.doi.org/10.1049/ip-cds:19960490.

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18

HWANG, YUH-SHYAN, SHEN-IUAN LIU, DONG-SHIUH WU, and YAN-PEI WU. "Linear transformation all-pole filters based on current conveyors." International Journal of Electronics 79, no. 4 (October 1995): 439–45. http://dx.doi.org/10.1080/00207219508926282.

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19

Liu, S. I., H. W. Tsao, J. Wu, and T. K. Lin. "MOSFET capacitor filters using unity gain CMOS current conveyors." Electronics Letters 26, no. 18 (1990): 1430. http://dx.doi.org/10.1049/el:19900917.

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20

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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21

Naidu, G. Appala, and B. T. Krishna. "A Comparative Analysis of Universal Filters using Current Conveyors." Indian Journal of Science and Technology 10, no. 20 (February 1, 2017): 1–7. http://dx.doi.org/10.17485/ijst/2017/v10i20/100222.

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22

Horng, Jiun-Wei, Chun-Li Hou, Ching-Yao Tseng, Ryan Chang, and Dun-Yih Yang. "Cascadable Current-Mode First-Order and Second-Order Multifunction Filters Employing Grounded Capacitors." Active and Passive Electronic Components 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/261075.

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A configuration for realizing low input and high output impedances current-mode multifunction filters using multiple output second-generation current conveyors (MOCCIIs) is presented. From the proposed circuit configuration, first-order allpass, highpass, lowpass and second-order allpass, notch, bandpass filters can be obtained. The simulation results confirm the theoretical analysis.

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23

Soliman, Ahmed M. "Current-Mode Universal Filters Using Current Conveyors: Classification and Review." Circuits, Systems & Signal Processing 27, no. 3 (June 2008): 405–27. http://dx.doi.org/10.1007/s00034-008-9034-y.

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24

Yuce, Erkan, and Shahram Minaei. "Signal limitations of the current-mode filters employing current conveyors." AEU - International Journal of Electronics and Communications 62, no. 3 (March 2008): 193–98. http://dx.doi.org/10.1016/j.aeue.2007.03.015.

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25

Chen, Hua-Pin. "Voltage-Mode Multifunction Biquadratic Filter with One Input and Six Outputs Using Two ICCIIs." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/432570.

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A novel voltage-mode multifunction biquadratic filter with one input and six outputs is presented. The proposed circuit can realize inverting and noninverting low-pass, bandpass, and high-pass filters, simultaneously, by using two inverting second-generation current conveyors (ICCIIs), two grounded capacitors, and four resistors. Moreover, the proposed circuit offers the following attractive advantages: no requirements for component matching conditions, the use of only grounded capacitors, and low active and passive sensitivities. HSPICE and MATLAB simulations results are provided to demonstrate the theoretical analysis.

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26

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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27

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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28

CHEN, HUA-PIN, and KUO-HSIUNG WU. "VOLTAGE-MODE DDCC-BASED MULTIFUNCTION FILTERS." Journal of Circuits, Systems and Computers 16, no. 01 (February 2007): 93–104. http://dx.doi.org/10.1142/s0218126607003447.

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Two new voltage-mode multifunction biquadratic filter configurations were proposed. The first proposed high-input impedance multifunction filter with single input and four outputs, which can simultaneously realize voltage-mode low-pass, band-pass, and high-pass filter responses employing all grounded passive components. The second proposed configuration is a slight modification of the first proposed circuit. It leads two more notch and all-pass transfer functions than the first proposed circuit. Moreover, both the proposed circuits still offer the following advantages: (i) orthogonal control of ωo and Q, (ii) low active and passive sensitivity performances, (iii) simpler configuration due to the use of noninverting type differential difference current conveyors (DDCCs) only.

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29

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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30

Fabre, A., F. Dayoub, L. Duruisseau, and M. Kamoun. "High input impedance insensitive second-order filters implemented from current conveyors." IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 41, no. 12 (1994): 918–21. http://dx.doi.org/10.1109/81.340859.

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31

Hwang, Yuh-Shyan, Jiann-Jong Chen, and Jung-Pin Li. "New Current-mode all-pole and Elliptic Filters Employing Current Conveyors." Electrical Engineering 89, no. 6 (May 10, 2006): 457–59. http://dx.doi.org/10.1007/s00202-006-0023-5.

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32

ACAR, C. "ON THE REALIZATION OF CURRENT-MODE FILTERS USING SECOND-GENERATION CURRENT CONVEYORS." International Journal of Circuit Theory and Applications 25, no. 3 (May 1997): 229–33. http://dx.doi.org/10.1002/(sici)1097-007x(199705/06)25:3<229::aid-cta966>3.0.co;2-b.

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33

Jiraseree-amornkun, Amorn, and Wanlop Surakampontorn. "Efficient implementation of tunable ladder filters using multi-output current controlled conveyors." AEU - International Journal of Electronics and Communications 62, no. 1 (January 2008): 11–23. http://dx.doi.org/10.1016/j.aeue.2007.01.005.

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34

MINAEI, SHAHRAM, and ERKAN YUCE. "ALL GROUNDED PASSIVE ELEMENTS CURRENT-MODE ALL-PASS FILTER." Journal of Circuits, Systems and Computers 18, no. 01 (February 2009): 31–43. http://dx.doi.org/10.1142/s0218126609004909.

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In this paper, a new current-mode (CM) all-pass filter employing two Dual-Output Second-Generation Current Conveyors (DO–CCIIs), one grounded resistor and one grounded capacitor is presented. The proposed circuit exhibits low input impedance and high output impedance, which makes it suitable for cascading. Moreover, adding two extra resistors to the proposed circuit, a new gain-variable voltage-mode (VM) all-pass filter is obtained. A quadrature oscillator employing minimum number of grounded passive components is derived from the developed CM filter as an application of the first-order all-pass filter. Both of the proposed all-pass filters do not require matching of passive components. The effects of the parasitic impedances of the DO–CCIIs on the transfer function (TF) of the proposed CM filter as an example are investigated. In addition, the proposed CM all-pass filter and oscillator circuit are simulated using SPICE simulation program to confirm the theory.

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35

Horng, Jiun-Wei. "Current conveyors based allpass filters and quadrature oscillators employing grounded capacitors and resistors." Computers & Electrical Engineering 31, no. 1 (January 2005): 81–92. http://dx.doi.org/10.1016/j.compeleceng.2004.11.006.

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36

Soliman, Ahmed M. "New Current-Mode Bandpass Filters Using Three Single-Output ICCIIs." Active and Passive Electronic Components 2007 (2007): 1–5. http://dx.doi.org/10.1155/2007/92034.

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New current-mode bandpass filters using three single outputs inverting second generation current conveyors (ICCII) are introduced. The first circuit uses two ICCII+ and one ICCII−, and realizes an inverting bandpass response. This circuit has one floating resistor and no independent gain control. The second circuit uses three ICCII−and realizes a noninverting bandpass response. The third circuit uses three ICCII+ and realizes also a noninverting bandpass response. The second and third circuits employ four grounded resistors and two grounded capacitors and have independent control onQand on the center frequency gain by varying a single grounded resistor. Spice simulation results using 0.5 um CMOS transistors are included to support the theoretical analysis.

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37

Minaei, Shahram, Oguzhan ÇiÇekoglu, Hakan Kuntman, and Sait TÜrkÖz. "High output impedance current-mode lowpass, bandpass and highpass filters using current controlled conveyors." International Journal of Electronics 88, no. 8 (August 2001): 915–22. http://dx.doi.org/10.1080/00207210110058166.

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38

Saraswat, R., K. Pal, and S. Rana. "Novel Grounded Capacitor All-Pass and Notch Filters Using Current Conveyors and Differential Amplifier." Active and Passive Electronic Components 26, no. 3 (2003): 167–70. http://dx.doi.org/10.1080/1042015031000073913.

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Three circuits each realizing second-order all-pass/notch filter transfer functions are reported. All circuits use grounded capacitors and are suitable for IC implementation. These circuits offer the advantages of high input impedance and low output impedance and are superior to all earlier realisations.

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39

Acar, C., and H. Kuntman. "Limitations on input signal level in voltage-mode active-RC filters using current conveyors." Microelectronics Journal 30, no. 1 (January 1999): 69–76. http://dx.doi.org/10.1016/s0026-2692(98)00088-3.

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40

Sedef, H., and C. Acar. "Simulation of resistively terminated LC ladder filters using a new basic cell involving current conveyors." Microelectronics Journal 30, no. 1 (January 1999): 63–68. http://dx.doi.org/10.1016/s0026-2692(98)00087-1.

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41

Çiçekoğlu, Oğuzhan, Nil Tarim, and Hakan Kuntman. "Wide Dynamic Range High Output Impedance Current-mode Multifunction Filters with Dual-output Current Conveyors." AEU - International Journal of Electronics and Communications 56, no. 1 (January 2002): 55–60. http://dx.doi.org/10.1078/1434-8411-54100073.

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42

Fani, Rezvan, and Ebrahim Farshidi. "New systematic two‐graph‐based approach of active filters employing multiple output current controlled conveyors." IET Circuits, Devices & Systems 7, no. 6 (November 2013): 326–36. http://dx.doi.org/10.1049/iet-cds.2012.0377.

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43

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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44

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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45

TOUMAZOU, CHRISTOFER. "ANALOGUE SIGNAL PROCESSING: THE “CURRENT” WAY OF THINKING." International Journal of High Speed Electronics and Systems 03, no. 03n04 (September 1992): 297–336. http://dx.doi.org/10.1142/s0129156492000126.

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This paper presents a tutorial review of the current-mode approach to analogue electronic circuit design, in particular some of the author’s own research over the past decade covering the development of a new generation of technology specific current-mode analogue signal processing. In this paper various technologies are represented with key current-mode building blocks ranging from current-conveyors, current-feedback operational amplifiers, linear transconductance amplifiers to applications ranging from current-mode active filters to low-noise current-mode optical preamplifiers. Advantages, future trends and perspectives of the current-mode approach are highlighted throughout the paper. The theoretical basis for many of the examples dates back many years but it is only recently due to advances in process technology that many of these techniques have now become a practical reality.

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46

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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HASSAN, TAREK M., and SOLIMAN A. MAHMOUD. "FULLY PROGRAMMABLE UNIVERSAL FILTER WITH INDEPENDENT GAIN-ω0-Q CONTROL BASED ON NEW DIGITALLY PROGRAMMABLE CMOS CCII." Journal of Circuits, Systems and Computers 18, no. 05 (August 2009): 875–97. http://dx.doi.org/10.1142/s0218126609005411.

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A fully programmable second-order universal filter with independently controllable characteristics is presented in this paper. The proposed filter is based on a new ± 0.75 V second-generation current conveyor with digitally programmable current gain. The input stage of the current conveyor is realized using two complementary MOS differential pairs to ensure rail-to-rail operation. The output stage consists of a Class-AB CMOS push-pull network, which guarantees high current driving capability with a 47.2 μA standby current. The digital programmability of the current conveyor, based on transistor arrays and MOS switches, provides variable current gain using a digital code-word. Two approaches for implementing current conveyors with programmable current gain either greater or less than one are described. The fully programmable universal filter and the proposed digitally programmable current conveyor circuits are simulated using PSPICE with 0.25 μm CMOS technology from MOSIS.

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Zhang, Yan, Wei Gong, and Wei Liang Zhong. "Fault Automatic Detection Method of Steel Cord Conveyor Belt Based on Gabor Filter Bank." Applied Mechanics and Materials 411-414 (September 2013): 1218–21. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.1218.

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A method based on Gabor filter bank is presented to automatically detect the steel cord conveyor belt fault. Firstly, multi-channel filtering is implemented by Gabor filters. Then the characteristic differential and fusion images are calculated. Finally, the fault images are identified by white pixels statistics after the threshold segmentation. The results show that this method has good detection result for steel cord conveyor belt fault.

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Beg, Parveen. "Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/219453.

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This paper presents a voltage mode cascadable single active element tunable first-order all-pass filter with a single passive component. The active element used to realise the filter is a new building block termed as differential difference dual-X current conveyor with a buffered output (DD-DXCCII). The filter is thus realized with the help of a DD-DXCCII, a capacitor, and a MOS transistor. By exploiting the low output impedance, a higher order filter is also realized. Nonideal and parasitic study is also carried out on the realised filters. The proposed DD-DXCCII filters are simulated using TSMC the 0.25 µm technology.

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SOLIMAN, AHMED M. "GENERATION OF CFOA, CCII AND DVCC BASED OSCILLATORS FROM PASSIVE RLC FILTER." Journal of Circuits, Systems and Computers 20, no. 04 (June 2011): 621–39. http://dx.doi.org/10.1142/s0218126611007505.

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In a recent paper the link between the Op Amp-based two integrator loop oscillators and current feedback operational amplifier (CFOA)-based oscillators is detected and clearly explained. It was found that one of the grounded capacitor two CFOA two integrator loop oscillators, however, was not related directly to any of the Op Amp oscillators. In this paper the origin of the two CFOA grounded capacitor oscillator is found to be the passive second-order low-pass filter. It is also found that the differential voltage current conveyor (DVCC) grounded passive element oscillator is generated from the same passive second-order low-pass filter. A new family of grounded capacitor oscillators using current conveyors (CCII) and inverting current conveyors (ICCII) which includes sixteen members is introduced. A second new family of grounded passive elements oscillators using CCII and ICCII which includes eight members is also introduced. A discussion and a comparison with some of the previously reported CCII oscillator circuits is also given at the end of the paper.

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