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In this paper, a differential-input plus-type differential voltage current conveyor-based first-order universal filter is designed. This voltage-mode filter uses a grounded capacitor. In addition, it can provide all the noninverting and inverting first-order universal filter responses. The circuit provides high common-mode rejection ratio of about 76.5dB. Nevertheless, it needs a single matching problem and comprises two floating resistors. Quadrature oscillator (QO) design is obtained using this filter as an application example. The designed filter and QO circuits are simulated through the SPICE program, and some experimental studies are carried out using AD844 ICs to verify the theory. © 2023 World Scientific Publishing Company.

In this study, we present two new grounded capacitance multiplier circuits based on a negative-type second-generation current conveyor (CCII-) and an inverting second-generation current conveyor (ICCII). The first proposed circuit consists of one CCII- and a voltage follower (VF) employing two NMOS transistors while the second proposed circuit is composed of an ICCII and an inverting voltage follower (IVF) including two NMOS transistors. Each circuit contains two resistors, and single grounded capacitor, which is attractive for integrated circuit realization. No active and passive component matching conditions are required for the realization of the proposed capacitance multiplier circuits. The simulation results are included to confirm the theory. (C) 2017 Elsevier GmbH. All rights reserved.

In this paper, an implementation of a simulated grounded inductor (SGI) based on a recently developed active building block called second-generation voltage conveyor (VCII) is proposed. The proposed SGI employs two VCIIs, two resistors, and one grounded capacitor, which is preferred when integration is involved. More importantly, unlike most of the other previously reported SGIs, this one is free from any restrictive matching conditions. A complete analysis of nonidealities along with sensitivity treatment by considering parasitic impedances and nonideal gains of the VCII are performed. A simple VCII circuit is designed to be used in the implementation of the proposed SGI. To support the presented theory, Pspice simulation results using 0.18-µm CMOS technology parameters and supply voltage of ±0.9 V are provided. On the basis of the achieved results, the proposed SGI operates in a good agreement with an ideal inductor. The power consumption is only 0.65 mW, and the parasitic series impedance is approximately 191.9 ?. The applicability of the proposed SGI is tested by using it in a standard second-order high-pass RLC filter. © 2020 John Wiley & Sons, Ltd.

A voltage-mode universal biquadratic filter and two quadrature oscillators (QOs) based on CCIIs namely second-generation current conveyors are proposed. The proposed filter with one output and three inputs consists of two CCIIs, three resistors and two capacitors. It can provide all the standard second-order universal filter transfer functions with appropriate choice of input voltages. It also has the orthogonal control of the quality factor and angular resonance frequency. However, a resistive matching condition is required for the all-pass responses. The first proposed QO includes two CCIIs, three resistors and two grounded capacitors while the second one is composed of three plus-type CCIIs, three resistors and two grounded capacitors. By a single grounded resistor, oscillation frequencies of both of the proposed QOs can be controlled orthogonally. Furthermore, in order to confirm the theory, a lot of simulation and experimental results are given. © 2020 Elsevier GmbH

Yesil, Abdullah/0000-0002-0607-8226 In this study, two new grounded metal oxide semiconductor field effect transistor (MOSFET)-C active inductors (AIs) are proposed. The proposed AIs contain only eight MOS transistors and a single grounded capacitor that is attractive for integrated circuit fabrication. Inductance values of them can be electronically tuned by a single control voltage. They do not include any current sources. Therefore, the designs of the proposed AIs are simple and useful. They do not suffer from body effects. Hence, they can be designed with low power supply voltages. Simulation results by using the Cadence analog environment program with 180 nm Taiwan Semiconductor Manufacturing Company (TSMC) nm technology parameters are carried out to indicate the performance of them. Layouts of both proposed AIs occupy the same area of about 78 mu m x 78 mu m. Postlayout simulation results are given to confirm the validity of the theoretical analysis.

A new CFOA based grounded capacitance multiplier is proposed in this study. The proposed grounded capacitance multiplier that does not need any passive component matching conditions employs two CFOAs, a grounded capacitor and a couple of resistors. A number of frequency and time domain analyses for the proposed grounded capacitance multiplier are performed through the SPICE simulation program. During the simulations, +/- 9 V supply voltages and a commercially available AD844 model are used. In addition to these, an experiment in time domain is made to validate the performance. (C) 2019 Elsevier GmbH. All rights reserved. C1 [Dogan, Mehmet; Yuce, Erkan] Pamukkale Univ, Dept Elect & Elect Engn, TR-20160 Denizli, Turkey.

A new plus-type second-generation voltage conveyor (VCII+) based first-order mixed-mode (MM) all-pass (AP) filter is proposed in this study. The proposed MM AP filter employs two VCII+s, three resistors and one grounded capacitor. It has low input and high output impedances for the current-mode selection while it has low input and low output impedances for the transimpedance-mode selection. The AP filter gain is unity for the current output while it is adjustable for the voltage output via a grounded resistor. However, a single passive component matching condition is needed for the proposed MM AP filter. Complete non-ideal analysis by taking into account all the parasitic resistors and non-ideal gains of the VCII+ is performed. The presented theory is verified through SPICE simulations by using supply voltage of ± 0.9 V and 0.18 µm Taiwan Semiconductor Manufacturing Company complementary metal oxide semiconductor technology parameters. © The Institution of Engineering and Technology 2020

In this paper, new two first-order all-pass filters (APFs) employing current feedback operational amplifiers (CFOAs) are proposed. The first proposed APF uses two CFOAs while the second one contains three CFOAs. The main features of the both of the proposed APFs are the use of a grounded capacitor, having adjustable gain and possessing low output impedance. Also, the second-proposed APF derived from the first one has high input impedance, and can simultaneously provide both inverting and non inverting APF responses; nonetheless, both of the proposed APFs need a single passive element matching condition for proper operation. Single phase and multiphase oscillators are included to illustrate applications of the proposed APFs. Several simulations and experiments based on commercially active devices such as AD844s are carried out to verify the theory. (C) 2019 Elsevier GmbH. All rights reserved. C1 [Yuce, Erkan] Pamukkale Univ, Dept Elect & Elect Engn, TR-20160 Pamukkale, Denizli, Turkey. [Verma, Rakesh; Pandey, Neeta] Delhi Technol Univ, Dept Elect & Commun Engn, New Delhi, India. [Minaei, Shahram] Dogus Univ, Dept Elect & Commun Engn, Acibadem, TR-34722 Istanbul, Turkey.

In this paper, a floating capacitance multiplier including two multioutput differential voltage current conveyors, two grounded resistors, and a grounded capacitor is proposed. The proposed floating capacitance multiplier can realize high capacitor values with two small-valued resistors. It is more suitable for integrated circuit technology because it has only grounded passive components without needing any critical passive component matching conditions. Its performances are examined with several simulations using the SPICE program. As an application example, a third-order notch filter using three resistors and three capacitors is given.

In this paper, a new quadrature oscillator (QO) and a new lossless grounded inductor simulator (LGIS) are proposed. The proposed QO uses only one negative-type modified differential voltage current conveyor (MDVCC-) with single Z terminal, two resistors and two grounded capacitors. The proposed LGIS employs only one MDVCC- with single Z terminal, two resistors and one grounded capacitor. However, the proposed LGIS requires a single passive component matching condition. Furthermore, a band-pass filter application is derived from the proposed LGIS. A number of simulations based on SPICE program and an experimental test are accomplished in order to demonstrate the performance of all the circuits. (C) 2017 Elsevier GmbH. All rights reserved.

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. © 2017 World Scientific Publishing Company.

In this study, a novel first-order current-mode active-C all-pass filter based on a companding idea is proposed. In the design of the filter, a state space method is used. The proposed structure consists of only two plus-type differential difference current conveyors, nine external MOSFETs, and a single grounded capacitor. The dominant advantages of the proposed filter are briefly described as follows: offering resistorless design, consuming low power, having an electronic tunability property of its pole frequency, and not suffering from the disadvantage of any passive component matching conditions. By cascading two all-pass filters in a closed negative feedback loop, a high-$Q$ band-pass network is designed as an application example. Several simulations including frequency domain and time domain analyses by using the PSpice program are carried out to confirm the theoretical design. All the obtained simulation results are given and discussed.

In this study, a new current follower based voltage-mode first-order all-pass filter is proposed. The proposed all-pass filter consists of a current follower, three resistors and a grounded capacitor. Also, the proposed filter has low power consumption and it can be operated at the high frequencies. However, it has a passive element matching condition. The SPICE simulation results based on 0.13 μm IBM CMOS parameters are given to demonstrate the performance of the proposed all-pass filter. © 2016 The Chamber of Turkish Electrical Engineers.

In this letter, a new voltage-mode (VM. Configuration for providing low-power and simultaneous realization of first-order low-pass, high-pass and all-pass filters is presented. The output of the all-pass filter is taken differentially. The proposed circuit contains low number of components, i.e., only two NMOS transistors, a floating battery, a grounded capacitor and a floating resistor. Adding two NMOS transistors to the proposed circuit it is modified as an all-pass filter with a single-ended output. The main advantage of the presented circuits in comparison with other counterparts is their extremely low power dissipation. Moreover, the floating resistor can be replaced with an additional NMOS transistor in triode region to provide electronic tunability. Simulation results using SPICE program are given to demonstrate the performance of the proposed circuit. © 2011 Springer Science+Business Media, LLC.

In this paper, a voltage-mode (VM) topology for providing first-order allpass filter responses is suggested. The proposed circuit is composed of a smaller number of components when compared to earlier ones, as it employs only three CMOS transistors, a grounded capacitor which is advantageous in integrated circuit (IC) processes, and two resistors. Computer simulation results, using the SPICE program, are given to exhibit the performance. A second-order low-pass filter employing only grounded capacitors which are canonical in number is given as one of the applications of the presented non-inverting first-order all-pass filter topology. © Springer Science+Business Media, LLC 2009.

In this paper, five novel and minimum number count floating inductor simulators (FIs) are proposed. Three of the presented FIs depending on the passive component choice can provide parallel R-L, (-R)-(-L) and series R-L, (-R)-(-L) from the same configuration while other two provide one of parallel R-L or series R-L. Some of the introduced positive lossy inductor simulators employ a grounded capacitor; accordingly, they are convenient for integrated circuit (IC) implementation. So as to exhibit the performance of the proposed structures, computer simulations based on SPICE program are given. © 2008 Springer Science+Business Media, LLC.

In this paper, an active network simulating mutually coupled inductors employing four second-generation current controlled conveyors, five resistors, and only two grounded capacitors is presented. The primary, secondary, and mutual simulated inductances of the circuit are independent and can be electronically tuned. The proposed circuit represents a synthetic transformer and has a positive mutual inductance. As an application, the proposed transformer is used to construct a stagger-tuned filter. Simulation Program with Integrated Circuit Emphasis (SPICE) simulation and experimental results are given to verify the theoretical analysis. © 2008 IEEE.

In this paper, a new first-order current-mode (CM) universal filter employing two dual output second-generation current conveyors (DO-CCIIs), one resistor and a grounded capacitor is proposed. The proposed filter has low input and high output impedances; thus, it can be easily connected with other CM circuits. It can simultaneously realize first-order low-pass (LP) and all-pass (AP) responses and can provide high-pass (HP) response with interconnection of LP and AP responses. It can be tuned electronically by replacing with dual output second-generation current controlled conveyors (DO-CCCIIs) instead of DO-CCIIs and removing the resistor. It has only a resistor but no capacitor connected in series to X terminal of DO-CCII; accordingly, it can be operated at high frequencies. Also, it does not need any critical passive component matching conditions and cancellation constraints. A number of simulation results based on SPICE program are included to exhibit performance, workability and effectiveness of the proposed filter configuration. © 2016 World Scientific Publishing Company.

In this paper, two lossy grounded inductor simulators (GISs) and one lossless GIS including an inverting type current feedback operational amplifier (CFOA-), two resistors and a capacitor are proposed. All the proposed GISs can be easily obtained with commercial available active devices such as AD844s. Also, they do not need any critical passive component matching conditions. Both of the proposed lossy GISs employ a grounded capacitor, whereas the lossless one has a floating capacitor. In order to show performance of the proposed GISs, a number of simulation and experimental test results are given. © 2015, Springer Science+Business Media New York.

In this paper, a new Voltage-Mode (VM) first-order All-Pass Filter (APF) topology composed of only a grounded capacitor is proposed. The proposed APF uses a single, minus-type, second-generation, current conveyor (CCII-), which can be constructed by only five MOS transistors. It has low power consumption. The resonance frequency of the proposed APF can be adjusted by changing only a resistor value. However, it needs a single matching condition. As an application, a quadrature oscillator example is given. A non-ideality analysis for the proposed APF is also given. A number of time domain and frequency domain simulation results and an experimental test result are included to confirm the theory. © 2015 Sharif University of Technology. All rights reserved.

In this paper, two new floating inductor simulators (FISs), both using two differential difference current conveyors, are considered. The proposed FISs do not suffer from passive component matching constraints and employ a minimum number of passive elements. They use a grounded capacitor; accordingly, they are suitable for integrated circuit technology. They have good low- and high-frequency performances. Simulations are performed with the SPICE program to verify the claimed theory. Moreover, for the first FIS used in a second-order low-pass filter, a stability test is performed as an example. © TÜBITAK.

In this paper a new grounded capacitance multiplier using two Voltage Differencing Current Conveyors (VDCCs), two resistors, and one grounded capacitor is presented. The proposed capacitance multiplier can be tuned electronically by changing the biasing current of the VDCC. Moreover, the circuit does not require any conditions of component matching. The performance of the proposed capacitance multiplier is verified, and simulated by using PSPICE with TSMC CMOS 0.18 μm process parameters. © 2015 IEEE.

In this paper, a new voltage-mode (VM) multifunctional filter comprising two second-generation current conveyors (CCIIs) is proposed. The proposed filter with one input and three outputs is also composed of three resistors and two grounded capacitors. The proposed filter has high input impedance; thus, it can be easily connected with other VM circuits. The proposed filter can simultaneously provide low-pass (LP), band-pass (BP) and high-pass (HP) responses. A number of time domain and frequency domain simulation results are included to confirm the claimed theory. © 2015 World Scientific Publishing Company.

In this paper, a new topology for realizing arbitrary nth-order current transfer function (TF), consisting of only plus-type second-generation current conveyors (CCII+s), is suggested. The proposed TF simulator employs only grounded capacitors and is free from the passive element matching requirements. The developed TF simulator can be constructed directly with commercially available active components such as AD844s. It has low-input and high-output impedances, a feature which makes it fully cascadable with other current-mode topologies. Moreover, the proposed simulator can provide gain at its outputs. Simulation and experimental test results for various filter examples are included to confirm the claimed theory. Copyright © 2012 John Wiley & Sons, Ltd. In this paper, a new topology for realizing arbitrary n th-order current transfer function (TF) consisting of only plus-type second-generation current conveyors (CCII+s), is suggested. The proposed TF simulator employs only grounded capacitors and is free from the passive element matching requirements. The developed TF simulator can be constructed directly with commercially available active components such as AD844s. It has low-input and high-output impedances, a feature which makes it fully cascadable with other current-mode topologies. Moreover, the proposed simulator can provide gain at its outputs. Simulation and experimental test results for various filter examples are included to confirm the claimed theory. Copyright © 2012 John Wiley & Sons, Ltd.

In this paper, a new two-input three-output second-order universal filter is proposed. Two multi-output voltage controlled current followers (MO-VCCFs) and two capacitors are used in the proposed filter. The proposed filter does not have external passive resistors. It has high output impedances yielding easy cascadability. It has the property of electronic tunability. It does not need any critical passive component matching conditions. Also, it is composed of only grounded capacitors; accordingly, it is suitable for integration. Theoretical knowledge is supported via SPICE simulations.

In this paper, two new voltage-mode (VM) first-order all-pass filters using single active element namely second-generation current conveyor (CCII) and a grounding capacitor are proposed. The first proposed filter employs a dual output CCII (DO-CCII) and the other one uses a modified minus type CCII (MCCII-). One of the main advantages of both configurations is their high input impedances; thus, both can be easily cascaded with other VM circuits. Additionally, the use of a grounded capacitor in both circuits provides suitability for integrated circuit (IC) fabrication process. However, both of the proposed circuits need a single passive component matching constraint. Non-ideality analysis is performed for the proposed circuits. Moreover, two quadrature oscillator applications of the proposed filters are given. The behavior of the filters is verified by SPICE simulations. Also, experimental tests using commercially available ICs (AD844s) are achieved for the second proposed configuration. © 2013 Elsevier GmbH.

In this paper, a new current-mode second-order square-root-domain general notch filter is proposed. The design is based on the state-space synthesis method with two subcircuit; square-root and squarer/divider circuits. In the circuit, the input and the output values, and dominant variables are all currents. Only MOS transistors and grounded capacitors are required to realize the filter circuit. Three cases of the second-order notch filter were obtained. The regular notch was obtained when ωn = ωp, the lowpass notch was obtained when ωn > ωp, and the highpass notch was obtained when ωn < ωp. The center frequency, and the notch frequency of the filter can be electronically tuned by changing external currents. Time and frequency domain simulations are performed using PSPICE program for the filter to verify the theory and to show the performance of it. For this purpose, the filter is simulated by using TSMC 0.35 μm Level 3 CMOS process parameters.

This study proposes a new current-mode class-A log-domain elliptic filter for video frequency applications. The design is based on the topological simulation of the passive prototypes by using E-cells. The proposed filter has 3.42 MHz cut-off frequency with maximum 0.119 dB passband ripple and attenuation greater than 40 dB at 4.78 MHz. Only BJTs and grounded capacitors were implemented and operated with the symmetrical power supply of ±1.5 V. The cut-off frequency of the filter can be electronically tuned by changing external currents. SPICE simulations are given to confirm the theoretical design results. The proposed filter is simulated by using both idealized BJT models and AT&T CBIC-T type transistors. © 2013 The Chamber of Turkish Electrical Engineers-Bursa.

In this paper, two new single-input five-output (SIFO) voltage-mode (VM) second-order universal filters are presented. The proposed filters employ two triple-output second-generation current conveyors (TO-CCIIs) as active elements, five resistors and two grounded capacitors. The proposed filters provide all of the standard filter responses (i.e. low-pass, band-pass, high-pass, notch and all-pass responses) simultaneously. The non-ideal gain and parasitic impedance effects of the active elements on the transfer functions of the filters are investigated. SPICE simulation results with TSMC 0.18 μm technology parameters are given to verify the performance of the proposed filters. © 2012 IEEE.

In this paper, two new circuit configurations for realizing voltage-mode (VM) all-pass sections (APSs) are presented. The proposed circuits employ only two differential voltage current conveyors (DVCCs) and are cascadable with other VM circuits due to their high-input and low-output impedances. The first configuration uses a grounded resistor and a grounded capacitor without requiring matching constraints, whereas the second employs two grounded resistors and a grounded capacitor with a single matching condition. While the first configuration can realize only one all-pass response, the second can provide inverting and non-inverting all-pass responses with selection of appropriate input port. Adding two grounded resistors to the proposed filters, variable gain APSs can also be obtained. As applications, two quadrature oscillators, each of which using one of the proposed all-pass circuits, one grounded resistor and one grounded capacitor are presented. SPICE simulation results are included to verify the theory. © 2010 John Wiley & Sons, Ltd.

Minaei, Shahram (Dogus Author) -- Full conference title: 34th International Conference on Telecommunications and Signal Processing (TSP), 2011: 18 - 20 Aug. 2011, Budapest, Hungary. In this work, we present a new topology for realizing a grounded inductor employing only a single current conveyor (CC), called modified dual-output differential difference current conveyor (MDO-DDCC), and a minimum number of passive components, two resistors, and one grounded capacitor. The non-ideality effects of the active element on the simulated inductor are investigated. To demonstrate the performance of the proposed grounded inductance simulator, it is used to construct a parallel resonant circuit. Simulation results are given to confirm the theoretical analysis. ProfiNET Test, s. r. o., T-Mobile Czech Republic a.s.

In this paper, a novel single-input three-output (SITO) voltage-mode (VM) universal biquadratic filter employing a single triple-output second-generation current conveyor (TO-CCII), two grounded capacitors and four resistors, is presented. The proposed topology offers the realization of all the standard filter transfer functions (TFs). The non-ideality and parasitic effects of the active element on the TF of the proposed filter are investigated in detail. The proposed filter is tested in time and frequency domains with SPICE simulations. © 2011 IEEE.

Minaei, Shahram (Dogus Author) -- Conference full title: 33rd International Conference on Telecommunications and Signal Processing, TSP 2010; Baden near Vienna; Austria; 17 August 2010 through 20 August 2010 -- Paper published in Radioengineering, 20 (1) pp. 3-9. Fultext accessible via https://hdl.handle.net/11376/1383 In this paper, a new circuit configuration for realizing voltage-mode (VM) all-pass section (APS) is presented. The circuit is cascadable with other VM circuits because of its high input and low output impedances. It consists of two differential difference current conveyors (DDCCs), one grounded resistor and one grounded capacitor. The proposed circuit can be slightly changed by using two additional grounded resistors to provide high gain. Moreover, a quadrature oscillator with minimum number of active and passive elements is derived from the proposed APS. SPICE simulations are performed to verify the theory. Motorola

In this paper, a new voltage-mode configuration for realizing a first-order phase shifter is suggested. The proposed phase shifter contains low number of components, i.e. two n-type metal-oxide semiconductor field effect transistors (NMOS transistors) both operating in saturation region, a grounded capacitor and three resistors. The presented circuit can be equipped with electronic tunability by using externally controllable electronic resistor. Computer simulation results, using SPICE program, are given to demonstrate the performance of the proposed phase shifter. © 2009 Springer Science+Business Media, LLC.

In this paper, a novel two-input two-output current-mode (CM) circuit for providing proportional-integral-derivative (PID) controller and instrumentation amplifier (IA) responses, depending on the passive component selection, is presented. The developed circuit uses only grounded capacitors (PID controller selection) and only grounded resistors (IA choice); accordingly, it is convenient for integrated circuit (IC) fabrication. The proposed new configuration can simultaneously realize both gain variable non-inverting and inverting responses without requiring extra additional components. The proposed topology for providing high output impedance currents can be easily cascaded with other CM structures. Finally, some time domain and frequency domain analysis with SPICE simulation program and experimental results are included to show workability and effectiveness of the proposed circuit. Crown Copyright © 2010.

In this study, current-mode square-root-domain (SRD) electronically-tunable universal filter is proposed. The proposed circuit has one input and five outputs and can realize low-pass (LP), band-pass (BP) high-pass (HP) allpass (AP) and notch (N) responses without any changes in the circuit topology. In order to get variable quality factor value, the feedback is applied to the filter. Only MOS transistors and grounded capacitors are required to realize the filter circuit. The natural frequency and quality factor of the LP, BP, HP, AP and N can be electronically tuned by changing DC current sources. Time and frequency domain simulations are performed using PSPICE program for universal filter to verify the theory and to show the performance of them. For this purpose, the filter is simulated by using TSMC 0.35 μm Level 3 CMOS process parameters.

In this paper, a novel design for realizing a voltage-mode (VM) all-pass filter utilizing two differential voltage current conveyors (DVCCs) is proposed. Also, the suggested filter uses a canonical number of passive elements (one grounded capacitor and one resistor) without requiring any element matching condition. The proposed filter has high input and low output impedances, which make it suitable for cascading. The effects of the nonidealities of the DVCCs on the proposed design are investigated. As an application, a quadrature oscillator is designed using the proposed VM all-pass filter and an integrator. The proposed filter and oscillator circuits are simulated using the SPICE simulation program to confirm the theory. © Springer Science+Business Media, LLC 2010.