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Artículos de revistas sobre el tema "Transresistance amplifier"

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Autor: Grafiati

Publicado: 14 de marzo de 2023

Última modificación: 11 de septiembre de 2023

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1

SOLIMAN, AHMED M. y AHMED H. MADIAN. "MOS-C TOW-THOMAS FILTER USING VOLTAGE OP AMP, CURRENT FEEDBACK OP AMP AND OPERATIONAL TRANSRESISTANCE AMPLIFIER". Journal of Circuits, Systems and Computers 18, n.º 01 (febrero de 2009): 151–79. http://dx.doi.org/10.1142/s0218126609004995.

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Several MOS-C realizations of the Tow-Thomas circuit using the commercially available voltage operational amplifier and the current feedback operational amplifier are reviewed in this paper. Additional MOS-C Tow-Thomas realizations using the operational transresistance amplifier and the differential current voltage conveyor are also included. MOS-C realizations of the Tow-Thomas circuit using CMOS operational amplifier, CMOS current feedback operational amplifier and CMOS operational transresistance amplifier are also given. Spice simulation results using 0.18 CMOS technology model from MOSIS are included together with detailed comparison tables to demonstrate the differences between MOS-C Tow-Thomas circuits using both of the commercially available active building blocks and CMOS integrated building blocks.

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2

R. Pawade, mr Aniket y prof Rahul D. Ghongade. "Operational Transresistance Amplifier Using Submicron Technology". IOSR journal of VLSI and Signal Processing 4, n.º 2 (2014): 46–50. http://dx.doi.org/10.9790/4200-04224650.

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3

Chen, J. J., H. W. Tsao y C. C. Chen. "Operational transresistance amplifier using CMOS technology". Electronics Letters 28, n.º 22 (1992): 2087. http://dx.doi.org/10.1049/el:19921338.

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4

SOLIMAN, AHMED M. y AHMED H. MADIAN. "MOS-C KHN FILTER USING VOLTAGE OP AMP, CFOA, OTRA AND DCVC". Journal of Circuits, Systems and Computers 18, n.º 04 (junio de 2009): 733–69. http://dx.doi.org/10.1142/s021812660900523x.

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MOS-C realizations of the Kerwin–Huelsman–Newcomb (KHN) circuit using the commercially available Voltage Operational Amplifier (VOA) and the Current Feedback Operational Amplifier (CFOA) are reviewed in this paper. Additional MOS-C KHN realizations using the Operational Transresistance Amplifier (OTRA) and the Differential Current Voltage Conveyor (DCVC) are also included. MOS-C realizations of the KHN circuit using CMOS operational amplifier, CMOS current feedback operational amplifier and CMOS operational transresistance amplifier are also given. Spice simulation results using 0.18 CMOS technology model from MOSIS are included together with detailed comparison tables to demonstrate the differences between MOS-C KHN circuits using both of the commercially available active building blocks and CMOS integrated building blocks. A comparison with the Gm-C KHN circuit is also included.

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5

Chien, Hung-Chun. "Full-Phase Operation Transresistance-Mode Precision Full-Wave Rectifier Designs Using Single Operational Transresistance Amplifier". Active and Passive Electronic Components 2019 (3 de marzo de 2019): 1–18. http://dx.doi.org/10.1155/2019/1584724.

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This study proposed the designs of two full-phase operation transresistance-mode (TRM) precision full-wave rectifiers. The first circuit consisted of a single operational transresistance amplifier (OTRA), four diodes, and a resistor. The second scheme was an OTRA combined with a full metal-oxide semiconductor field-effect transistor-based design, which is preferable for integrated circuit implementation because no passive components are used in the circuit topology. Based on our literature review, this is the first study that discussed a full-phase operation transresistance-mode precision full-wave rectifier consisting of a single OTRA and few passive components. In this paper, several previously reported precision full-wave rectifiers consisting of various active devices are first reviewed followed by the proposed OTRA-based transresistance-mode precision full-wave rectifiers and an analysis of nonideal effects. Furthermore, computer simulations and experimental results are presented to verify the validity of the proposed circuits, which were consistent with the theoretical predictions.

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6

Gokcen, Ahmet y Ugur Cam. "MOS-C single amplifier biquads using the operational transresistance amplifier". AEU - International Journal of Electronics and Communications 63, n.º 8 (agosto de 2009): 660–64. http://dx.doi.org/10.1016/j.aeue.2008.05.008.

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7

Shaker, Pittala Chandra y Avireni Srinivasulu. "Four new oscillators using operational transresistance amplifier". Radioelectronics and Communications Systems 60, n.º 5 (mayo de 2017): 206–14. http://dx.doi.org/10.3103/s0735272717050028.

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8

Pandey, Rajeshwari, Neeta Pandey, Mayank Bothra y Sajal K. Paul. "Operational Transresistance Amplifier-Based Multiphase Sinusoidal Oscillators". Journal of Electrical and Computer Engineering 2011 (2011): 1–8. http://dx.doi.org/10.1155/2011/586853.

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Multiphase sinusoidal oscillator circuits are presented which utilize Operational Transresistance Amplifier (OTRA) as the active element. The first circuit producesnodd-phase oscillations of equal amplitudes and equally spaced in phase. The second circuit is capable of producingnodd- or even- phase oscillations equally spaced in phase. An alternative approach is discussed in the third circuit, which utilizes a single-phase tunable oscillator circuit which is used to inject signals into a phase shifter circuits. An automatic gain control (AGC) circuit has been implemented for the second and third circuit. The circuits are simple to realize and have a low component count. PSPICE simulations have been given to verify the theoretical analysis. The experimental outcome corroborates the theoretical propositions and simulated results.

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9

Salama, K. N. y A. M. Soliman. "Novel oscillators using the operational transresistance amplifier". Microelectronics Journal 31, n.º 1 (enero de 2000): 39–47. http://dx.doi.org/10.1016/s0026-2692(99)00087-7.

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10

SALAMA, K. N. y A. M. SOLIMAN. "ACTIVE RC FILTERS USING OPERATIONAL TRANSRESISTANCE AMPLIFIERS". Journal of Circuits, Systems and Computers 08, n.º 04 (agosto de 1998): 507–16. http://dx.doi.org/10.1142/s0218126698000304.

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A new generalized universal filter configuration using the Operational Transresistance Amplifier is proposed. Twelve different filter circuits are derived from the general configuration. The circuits are designed to provide Low-pass, Band-pass, High-pass, All-pass and Notch responses through appropriate choice of admittances. The feasibility of this configuration in operating at high frequencies is presented. A detailed analysis taking the effect of the finite transresistance gain into consideration is presented. Self-compensation that requires no additional elements of some of the proposed filters is presented. The effectiveness of the proposed configuration is demonstrated by HSpice simulations.

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11

Dabas, Annu y Kanchan Grover. "Peak Detector using Low Voltage Operational Transresistance Amplifier". International Journal of Engineering Trends and Technology 58, n.º 3 (25 de abril de 2018): 110–13. http://dx.doi.org/10.14445/22315381/ijett-v58p221.

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12

Wulleman, J. "Low-powered high-gain transresistance BiCMOS pulse amplifier". Electronics Letters 32, n.º 10 (1996): 934. http://dx.doi.org/10.1049/el:19960607.

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13

Kafrawy, Abdelrahman K. y Ahmed M. Soliman. "A modified CMOS differential operational transresistance amplifier (OTRA)". AEU - International Journal of Electronics and Communications 63, n.º 12 (diciembre de 2009): 1067–71. http://dx.doi.org/10.1016/j.aeue.2008.08.003.

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14

Salama, Khaled N. y Ahmed M. Soliman. "CMOS operational transresistance amplifier for analog signal processing". Microelectronics Journal 30, n.º 3 (marzo de 1999): 235–45. http://dx.doi.org/10.1016/s0026-2692(98)00112-8.

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15

Komanapalli, Gurumurthy, Rajeshwari Pandey y Neeta Pandey. "New sinusoidal oscillator configurations using operational transresistance amplifier". International Journal of Circuit Theory and Applications 47, n.º 5 (20 de marzo de 2019): 666–85. http://dx.doi.org/10.1002/cta.2619.

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16

Pandey, Rajeshwari, Neeta Pandey y Sajal K. Paul. "Voltage Mode Pulse Width Modulator Using Single Operational Transresistance Amplifier". Journal of Engineering 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/309124.

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This paper presents a voltage mode pulse width modulator (PWM) using single operational transresistance amplifier (OTRA). The proposed PWM consists of a relaxation oscillator output which is modulated using modulating signal. PSPICE simulation results and experimental results have been included to verify the theoretical analysis.

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17

Ghosh, Mourina, Sajal K. Paul, Rajiv Kumar Ranjan y Ashish Ranjan. "Third Order Universal Filter Using Single Operational Transresistance Amplifier". Journal of Engineering 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/317296.

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This paper proposes a multi-input single-output (MISO) third order voltage mode (VM) universal filter using only one operational transresistance amplifier (OTRA). The proposed circuit realizes low-pass, high-pass, all-pass, band-pass, and notch responses from the same topology. The PSPICE Simulation results using 0.5 μm CMOS technology agree well with the theoretical design.

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18

Pandey, Rajeshwari, Neeta Pandey, Sajal K. Paul, A. Singh, B. Sriram y K. Trivedi. "New Topologies of Lossless Grounded Inductor Using OTRA". Journal of Electrical and Computer Engineering 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/175130.

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Two alternate topologies of lossless grounded inductor have been proposed using operational transresistance amplifier (OTRA). Three applications using the proposed inductors are also included. PSPice simulation and experimental results have been included to demonstrate the performance and verify the theoretical analysis.

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19

Da, Ting. "Photoelectric Sensor Circuit and Image Segmentation Method for Radar System". Journal of Nanoelectronics and Optoelectronics 16, n.º 2 (1 de febrero de 2021): 170–78. http://dx.doi.org/10.1166/jno.2021.2920.

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In this exploration, based on the principle and system parameters of laser three-dimensional (3D) radar imaging technology, the corresponding photoelectric sensor circuit scheme is formulated. The sense circuit of avalanche photon diode (APD) converts the signal through the transresistance amplifier circuit. Then, LMH6629 is selected as a precision amplifier with low input noise voltage and low input error current. The capacitance is used as a compensation element to compensate the phase. For the power supply scheme, choosing the mode of switching power supply and LDO to work together can improve the efficiency of power supply and reduce the output of current ripple. At the same time, semantic segmentation is carried out for the obtained photoelectric images. Based on the traditional spatial pyramid pooling algorithm, the fusion of mean intersection over union and cross information entropy loss function is introduced to improve the weight of local image region. In the experiment, Multisim software is used to simulate the circuit. The APD reverse bias voltage is set to 90 V, and the multiplication coefficient is 98.7. The feedback resistance, bandwidth, phase compensation capacitance and other parameters are further calculated. It is found that there is obvious self-excited phenomenon in the output waveform of the transresistance amplifier without phase compensation capacitor. When the feedback capacitance reaches 0.8 pF, the oscillation phenomenon is obviously reduced; further calculation shows that the bandwidth of transresistance amplifier is 230 MHz, and the noise of APD power supply is mainly caused by BUCK switching power supply switch when the bottom noise of oscilloscope is ignored. However, the noise is suppressed under the action of the back-end LDO device; after the loss function is introduced, the contour of the photoelectric image is preserved completely, and then the more accurate segmentation results are obtained.

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20

Alexeev, G. D., M. A. Baturitsky, O. V. Dvornikov, A. I. Khokhlov, V. A. Mikhailov, I. A. Odnokloubov y V. V. Tokmenin. "The eight-channel ASIC bipolar transresistance amplifier D0M AMPL-8.3". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 462, n.º 3 (abril de 2001): 494–505. http://dx.doi.org/10.1016/s0168-9002(01)00195-4.

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21

Komanapalli, Gurumurthy, Rajeshwari Pandey y Neeta Pandey. "Operational Transresistance Amplifier Based Wienbridge Oscillator and Its Harmonic Analysis". Wireless Personal Communications 108, n.º 1 (20 de abril de 2019): 1–17. http://dx.doi.org/10.1007/s11277-019-06382-2.

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22

Kılınç, Selçuk y Uğur Çam. "Cascadable allpass and notch filters employing single operational transresistance amplifier". Computers & Electrical Engineering 31, n.º 6 (septiembre de 2005): 391–401. http://dx.doi.org/10.1016/j.compeleceng.2005.06.001.

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23

Gupta, Ashish, Raj Senani, D. R. Bhaskar y A. K. Singh. "New OTRA-Based Generalized Impedance Simulator". ISRN Electronics 2013 (9 de mayo de 2013): 1–10. http://dx.doi.org/10.1155/2013/907597.

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Operational transresistance amplifier (OTRA) has attracted considerable attention in the recent literature in several applications such as impedance simulation, universal biquad filter realization, realization of sinusoidal oscillators and multivibrators. However, to the best knowledge of the authors, any OTRA-based generalized impedance simulator circuits have not been reported so far. The purpose of this paper is to present such a circuit.

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24

Pandey, Rajeshwari, Neeta Pandey y Sajal K. Paul. "Electronically Tunable Transimpedance Instrumentation Amplifier Based on OTRA". Journal of Engineering 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/648540.

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Operational transresistance amplifier (OTRA) is the most suitable analog building block (ABB) for transimpedance type signal processing due to its very nature of current input and voltage output. In this paper, OTRA-based transimpedance instrumentation amplifier (TIA) is presented. It provides high differential gain and bandwidth, which is independent of gain. It also offers high common-mode rejection ratio (CMRR). The amplifier gain can be controlled electronically by implementing resistors using MOS transistors operating in linear region. The circuit can be made fully integrated. The proposed circuit is insensitive to parasitic input capacitances and input resistances due to the internally grounded input terminals of OTRA. Theoretical analysis is verified through PSPICE simulations and experimentation.

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25

Dikbaş, Mehmet Cem y Umut Engin Ayten. "Voltage difference transresistance amplifier and its application: floating FDNR simulator circuit". International Journal of Electronics 105, n.º 10 (24 de mayo de 2018): 1716–27. http://dx.doi.org/10.1080/00207217.2018.1477200.

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26

Kilinc, Selcuk, Khaled N. Salama y Ugur Cam. "Realization of Fully Controllable Negative Inductance with Single Operational Transresistance Amplifier". Circuits, Systems & Signal Processing 25, n.º 1 (febrero de 2006): 47–57. http://dx.doi.org/10.1007/s00034-004-0706-y.

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27

Aggarwal, Gaurav, Harsh Garg, Nishank Bansal y Pranav Gangwar. "Single OTRA based Low Voltage Square Root Circuit". International Journal of Advance Research and Innovation 5, n.º 4 (2017): 29–32. http://dx.doi.org/10.51976/ijari.541705.

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This paper presents an analog square root circuit using single Operational Transresistance Amplifier (OTRA). It can be used to obtain the square root of the low input voltage. This circuit does not use any external passive component and hence is suitable for integration. The proposed circuit is verified with the help of simulations using 0.18µm CMOS parameters on PSPICE. The theoretical observations are in accordance with the simulation result.

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28

Kilinç, Selçuk y Ugur Çam. "Realization of nth-order voltage transfer function using single operational transresistance amplifier". ETRI Journal 27, n.º 5 (14 de octubre de 2005): 647–50. http://dx.doi.org/10.4218/etrij.05.0205.0034.

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29

Chandra Shaker, Pittala y Avireni Srinivasulu. "Electronic Tuning Square-Wave Generators with Improved Linearity Using Operational Transresistance Amplifier". Journal of Low Power Electronics and Applications 10, n.º 2 (14 de abril de 2020): 12. http://dx.doi.org/10.3390/jlpea10020012.

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Two new electronic tuning current-mode square-wave generators are introduced in the ensuing paper. In the first proposed square-wave generator circuit, one Operational Trans-resistance Amplifier (OTRA) and two passive components are involved, along with two NMOS depletion mode transistors. This circuit generates a square-wave with almost equal and fixed duty cycles. The second proposed circuit is able to control both on-duty and off-duty cycles independently with the help of two passive components, two NMOS depletion mode transistors, and two diodes connected to the circuit. The frequency of the proposed circuits can be adjusted with the passive components connected to the circuit. Moreover, electronic tuning can also be achieved with the proposed circuits. The measured results that are included in the paper show the linear variation of a time period as compared with existing OTRA based square waveform generator. The performance of the proposed circuits is examined while using SPICE models. These circuits are built on a laboratory breadboard using commercially available Current Feedback Operational Amplifier (AD844 AN) and passive components are connected externally and tested for square waveform generation. The obtained results demonstrate good agreement with the theoretical values.

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30

Barthelemy, H., I. Koudobine y D. Van Landeghem. "Bipolar low-power operational transresistance amplifier based on first generation current conveyor". IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 48, n.º 6 (junio de 2001): 620–25. http://dx.doi.org/10.1109/82.943333.

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31

Siripruchyanun, Montree, Nitchamon Poonnoy, Chairat Upathamkuekool y Kangwal Payakkakul. "Current Differencing Transresistance Amplifier (CDTRA) and its Application for Analog Signal Processing". Procedia Computer Science 86 (2016): 184–87. http://dx.doi.org/10.1016/j.procs.2016.05.056.

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32

Pandey, Rajeshwari, Neeta Pandey, B. Sriram y Sajal K. Paul. "Single OTRA Based Analog Multiplier and Its Applications". ISRN Electronics 2012 (14 de noviembre de 2012): 1–7. http://dx.doi.org/10.5402/2012/890615.

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This paper presents an analog multiplier using single operational transresistance amplifier (OTRA). The proposed circuit is suitable for integration as it does not use any external passive component. It can be used as a four-quadrant multiplier. Theoretical propositions are verified through PSPICE simulations using 0.5 μm CMOS parameters provided by MOSIS (AGILENT). The simulation results are in close agreement with theoretical predictions. The workability of the proposed multiplier is also tested through two applications, namely, a squarer and an amplitude modulator.

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33

Pandey, Rajeshwari, Neeta Pandey, Romita Mullick, Sarjana Yadav y Rashika Anurag. "All Pass Network Based MSO Using OTRA". Advances in Electronics 2015 (21 de enero de 2015): 1–7. http://dx.doi.org/10.1155/2015/382360.

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This paper presents multiphase sinusoidal oscillators (MSOs) using operational transresistance amplifier (OTRA) based all pass networks. Both even and odd phase oscillations of equal amplitudes which are equally spaced in phase can be produced using single all pass section per phase. The proposed MSOs provide voltage output and can readily be used for driving voltage input circuits without increasing component count. The effect of nonideality of OTRA on the circuit performance is also analysed. The functionality of the proposed circuit is verified through PSPICE simulations.

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34

Anurag, Rashika, Neeta Pandey y Ritu Vijay. "OTRA Based Half Wave Rectifier". International Journal of Advance Research and Innovation 6, n.º 1 (2018): 31–35. http://dx.doi.org/10.51976/ijari.611806.

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Precision rectifier finds application in a number of measurement and instrumentation systems. Earlier op-amps were used to implement precision rectifiers by connecting diodes in their feedback loops. Due to very high gain those circuits were capable of rectifying voltages even in millivolts. However in high frequency regions op-amps would not be a good choice because of their finite slew rates. The operational transresistance amplifier (OTRA) can be used as an alternate active block for low voltage rectification in high frequency range. This paper presents an OTRA based half wave rectifier (HWR). Its operation is validated through SPICE simulation, wherein OTRA is implemented using current feedback operational amplifier (CFOA) which is commercially available as AD844 IC. The simulation results are in conformation with the proposed theory.

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35

Wulleman, J. "A low-power high-gain transresistance BiCMOS pulse amplifier for capacitive detector readout". IEEE Journal of Solid-State Circuits 32, n.º 8 (1997): 1181–91. http://dx.doi.org/10.1109/4.604074.

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36

GHALLAB, YEHYA H., WAEL BADAWY, MOHAMED ABOU EL-ELA y MOHAMED H. EL-SAID. "THE OPERATIONAL FLOATING CURRENT CONVEYOR AND ITS APPLICATIONS". Journal of Circuits, Systems and Computers 15, n.º 03 (junio de 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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37

Ku, Yi-Tsen, Yuh-Shyan Hwang, Jiann-Jong Chen, Chun-Chi Shih y David Cheng. "A new current-mode wheatstone bridge based on a new fully differential operational transresistance amplifier". AEU - International Journal of Electronics and Communications 101 (marzo de 2019): 85–92. http://dx.doi.org/10.1016/j.aeue.2019.01.032.

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38

Komanaplli, Gurumurthy, Neeta Pandey y Rajeshwari Pandey. "New Realization of Quadrature Oscillator using OTRA". International Journal of Electrical and Computer Engineering (IJECE) 7, n.º 4 (1 de agosto de 2017): 1815. http://dx.doi.org/10.11591/ijece.v7i4.pp1815-1823.

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In this paper a new, operational transresistance amplifier (OTRA) based, third order quadrature oscillator (QO) is presented. The proposed structure forms a closed loop using a high pass filter and differentiator. All the resistors employed in the circuit can be implemented using matched transistors operating in linear region thereby making the proposed structure fully integrated and electronically tunable. The effect of non-idealities of OTRA has been analyzed which suggests that for high frequency applications self-compensation can be used. Workability of the proposed QO is verified through SPICE simulations using 0.18μm AGILENT CMOS process parameters. Total harmonic distortion (THD) for the proposed QO is found to be less than 2.5%.The sensitivity, phasenoise analysis is also discussed for the proposed structure.

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39

Safari, Leila, Erkan Yuce y Shahram Minaei. "A New Transresistance-Mode Instrumentation Amplifier with Low Number of MOS Transistors and Electronic Tuning Opportunity". Journal of Circuits, Systems and Computers 25, n.º 04 (2 de febrero de 2016): 1650022. http://dx.doi.org/10.1142/s0218126616500225.

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In this paper, the simplest possible electronically adjustable transresistance-mode (TRM) instrumentation amplifier (IA) using only eight MOS transistors is presented. Extremely simple structure of the proposed IA leads to a wide bandwidth and robust performance against mismatches and parasitic capacitances. Of more interest is that the differential-mode gain of the proposed IA can be electronically varied by control voltages. Post-layout and pre-layout simulation results based on 0.18[Formula: see text][Formula: see text]m TSMC CMOS parameters are included to confirm the validity of the theoretical analysis. Despite extremely simple structure, its input and output impedances are 1.93 and 1.68[Formula: see text]k[Formula: see text], respectively. Time domain analysis shows that for an input signal of 20[Formula: see text][Formula: see text]A peak to peak, maximum value of THD is 4.5% for different frequencies. Monte Carlo simulation is also carried out, which proves robust performance of the proposed IA against mismatches. The required chip area is only [Formula: see text].

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40

Tewari, Piyush Kumar y Rachana Arya. "Design and Realization of Fractional Low-Pass Filter of 1.5 Order Using a Single Operational Transresistance Amplifier". International Journal of Signal Processing, Image Processing and Pattern Recognition 9, n.º 9 (30 de septiembre de 2016): 69–76. http://dx.doi.org/10.14257/ijsip.2016.9.9.07.

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41

Chien, Hung-Chun. "New Realizations of Single OTRA-Based Sinusoidal Oscillators". Active and Passive Electronic Components 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/938987.

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This study proposes three new sinusoidal oscillators based on an operational transresistance amplifier (OTRA). Each of the proposed oscillator circuits consists of one OTRA combined with a few passive components. The first circuit is an OTRA-based minimum RC oscillator. The second circuit is capable of providing independent control on the condition of oscillation without affecting the oscillation frequency. The third circuit exhibits independent control of oscillation frequency through a capacitor. This study first introduces the OTRA and the related formulations of the proposed oscillator circuits, and then discusses the nonideal effects, sensitivity analyses, and frequency stability of the presented circuits. The proposed oscillators exhibit low sensitivities and good frequency stability. Because the presented circuits feature low impedance output, they can be connected directly to the next stage without cascading additional voltage buffers. HSPICE simulations and experimental results confirm the feasibility of the new oscillator circuits.

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42

SOLIMAN, AHMED M. "HISTORY AND PROGRESS OF THE TOW–THOMAS BIQUADRATIC FILTER PART II: OTRA, CCII, AND DVCC REALIZATIONS". Journal of Circuits, Systems and Computers 17, n.º 05 (octubre de 2008): 797–826. http://dx.doi.org/10.1142/s0218126608004691.

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The realization of the Tow–Thomas (TT) circuit using the Operational Transresistance Amplifier (OTRA) is reviewed. The circuit employs two OTRA, and all passive elements are floating as the original Tow–Thomas circuit. The Current Conveyor (CCII) TT circuits are reviewed next. The progress in the realization of the TT circuit using CCII is demonstrated clearly by summarizing eight different circuits. One of the circuits has the advantage of very high input impedance using all grounded resistors and capacitors. The Differential Voltage Current Conveyor (DVCC) as the active building block in realizing the TT circuit is also considered. Finally, current mode TT circuits using balanced output CCII are summarized. Top Spice (level 49), simulation results using technology SCN 05 feature size 0.5 μm from MOSIS vendor: AGILENT are included to demonstrate the magnitude and phase frequency response of the TT circuits. Additional simulation results for the total power dissipation, total harmonic distortion, intermodulation IM3, input and output referred noise spectral densities are also included for comparison purposes.

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43

Chien, Hung-Chun. "Switch-Controllable Full-Phase Operation Precision Half-Wave Rectifier Using a Single OTRA". Journal of Circuits, Systems and Computers 25, n.º 07 (22 de abril de 2016): 1650070. http://dx.doi.org/10.1142/s0218126616500705.

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This paper proposes designing a precision rectification circuit by using a single operational transresistance amplifier (OTRA). The proposed circuit is a switch-controllable OTRA-based full-phase operation precision half-wave rectifier, which can rectify an input signal to yield four-phase half-wave rectified output signals. Compared with existing designs, the advantage of the proposed circuit is that all of the possible rectified outputs of a half-wave rectifier can be obtained in one configuration. This paper first reviews previously reported half-wave precision rectifiers consisting of various active devices and the proposed OTRA-based precision half-wave rectifier; subsequently, an analysis of non-ideal effects and design considerations are presented. Computer simulations of the proposed circuit were conducted for verifying the feasibility of the circuit by using the Taiwan Semiconductor Manufacturing Company (TSMC) 0.35-[Formula: see text]m CMOS process technology. For practical circuit measurements, a prototype circuit was implemented, and commercially integrated circuits (AD844ANs) and discrete passive components were used to conduct experimental tests. The simulation and experimental results exhibited satisfactory agreement with those of theoretical analyses.

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44

Massarotto, Marco, Alfonso Carlosena y Antonio J. Lopez-Martin. "Two-Stage Differential Charge and Transresistance Amplifiers". IEEE Transactions on Instrumentation and Measurement 57, n.º 2 (2008): 309–20. http://dx.doi.org/10.1109/tim.2007.909498.

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45

Finardi, Ilaria y Luca Callegaro. "Calibration Setup for Ultralow-Current Transresistance Amplifiers". IEEE Transactions on Instrumentation and Measurement 67, n.º 11 (noviembre de 2018): 2676–83. http://dx.doi.org/10.1109/tim.2018.2829318.

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46

Said, Lobna A., Ahmed G. Radwan, Ahmed H. Madian y Ahmed M. Soliman. "Fractional order oscillators based on operational transresistance amplifiers". AEU - International Journal of Electronics and Communications 69, n.º 7 (julio de 2015): 988–1003. http://dx.doi.org/10.1016/j.aeue.2015.03.003.

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47

Martens, J. S., V. M. Hietala, T. E. Zipperian, S. R. Kurtz, D. S. Ginley, C. P. Tigges, J. M. Philips y N. Newman. "High temperature superconducting transresistance amplifiers for far infrared detectors". IEEE Transactions on Appiled Superconductivity 2, n.º 2 (junio de 1992): 111–13. http://dx.doi.org/10.1109/77.139228.

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48

Chen, J. J., H. W. Tsao, S. I. Liu y W. Chiu. "Parasitic-capacitance-insensitive current-mode filters using operational transresistance amplifiers". IEE Proceedings - Circuits, Devices and Systems 142, n.º 3 (1995): 186. http://dx.doi.org/10.1049/ip-cds:19951950.

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49

KILINÇ, SELÇUK y Uğur Çam. "Transimpedance Type Fully Integrated Biquadratic Filters Using Operational Transresistance Amplifiers". Analog Integrated Circuits and Signal Processing 47, n.º 2 (27 de febrero de 2006): 193–98. http://dx.doi.org/10.1007/s10470-006-2963-0.

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50

HOU, CHUN-LI, CHEN-CHUAN HUANG y JIUN-WEI HORNG. "A CRITERION OF A MULTI-LOOP OSCILLATOR CIRCUIT". Journal of Circuits, Systems and Computers 16, n.º 01 (febrero de 2007): 105–11. http://dx.doi.org/10.1142/s0218126607003460.

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Multi-loop feedback control has attracted considerable attention due to its simplicity and ease of implementation.1 In order to simplify the cumbersome analysis of a multi-loop circuit, the signal flow graph representation should be used rather than our familiar nodal analysis methods. This paper presents a criterion from the well-established Mason's formula for multi-loop oscillator in terms of signal flow graphs. The multi-loop oscillator circuit based on two operational transresistance amplifiers (OTRAs) is used as an example.

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