ON THE TRANSFORMATION OF GROUNDED INDUCTORS TO FLOATING INDUCTORS USING OFA AND FCCII

2011 ◽  
Vol 20 (02) ◽  
pp. 243-262 ◽  
Author(s):  
AHMED M. SOLIMAN
Keyword(s):  
Operational Amplifier ◽  
Current Conveyor ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier ◽  
Simulation Results

It is well known that a floating inductor circuit is realized from a grounded inductor circuit by replacing the operational amplifier by a floating operational transconductance amplifier. This idea is extended to transform current conveyor grounded inductors to floating inductors by replacing the current conveyor by the recently introduced floating current conveyor. Several examples are considered and simulation results are given to support the theory. Although the paper is partially a review in nature it includes several new realizations of floating inductors.

scholarly journals Programmable Second-Generation Current-Conveyor With Variable Current Gain

1995 ◽  
Vol 17 (4) ◽  
pp. 257-260
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Abdulrahman Khalaf Al-Ali ◽  
Abdulrafeeq Abdulshakoor
Keyword(s):  
Second Generation ◽  
Current Conveyor ◽  
Current Gain ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier ◽  
Simulation Results

A new programmable second-generation current-conveyor is proposed. The proposed circuit uses a commercially available second-generation current-conveyor and one operational transconductance amplifier. Simulation results confirming the presented theory are included.

A NOTE ON THE TRANSFORMATION OF GROUNDED INDUCTORS TO FLOATING INDUCTORS USING OFA AND FCCII

2013 ◽  
Vol 22 (02) ◽  
pp. 1250086
Author(s):  
AHMED M. SOLIMAN
Keyword(s):  
Operational Amplifier ◽  
Review Paper ◽  
Current Conveyor ◽  
Operational Transconductance Amplifier ◽  
Transconductance Amplifier

Recently this author published a paper1 discussing the transformation of grounded inductors to floating inductors using operational floating amplifier (OFA) or floating current conveyor (FCCII). The author classified the paper as a partially review paper as stated in the abstract and in the introduction of Ref. 1 The author states in the abstract that: It is well known that a floating inductor circuit is realized from a grounded inductor circuit by replacing the operational amplifier by a floating operational transconductance amplifier. This idea is extended to transform current conveyor grounded inductors to floating inductors by replacing the current conveyor by the recently introduced floating current conveyor.

Operational Transconductance Amplifier-Based Electronically Controllable Memcapacitor and Meminductor Emulators

2021 ◽  
pp. 2150222
Author(s):  
Eyyup demir ◽  
Abdullah Yesil ◽  
Yunus Babacan ◽  
Tevhit Karacali
Keyword(s):  
Process Parameters ◽  
High Order ◽  
Crucial Importance ◽  
Operational Transconductance Amplifier ◽  
Passive Components ◽  
Mos Transistor ◽  
Transconductance Amplifier ◽  
Simulation Results ◽  
Layout Area ◽  
Electronically Controllable

In this paper, two simple circuits are presented to emulate both memcapacitor and meminductor circuit elements. The emulation of these components has crucial importance since obtaining these high-order elements from markets is difficult when compared to resistor, capacitor and inductor. For this reason, we proposed Multi-Output Operational Transconductance Amplifier (MO-OTA)-based electronically controllable memcapacitor and meminductor circuits. To operate the MOS transistor as a capacitor, drain and source terminals are connected to each other. The memcapacitor behavior is obtained by driving the connected terminals with suitable voltage values. Only a few active and grounded passive components which are found in markets easily are used to emulate meminductive behavior. Furthermore, all passive elements in the circuit are grounded. All simulation results for memcapacitor and meminductor emulators are obtained successfully when compared to previous studies. For all analyses, MO-OTA is laid using the Cadence Spectre Analog Environment with TSMC 0.18[Formula: see text][Formula: see text]m process parameters and occupied a layout area of only 86.21[Formula: see text][Formula: see text]m.

scholarly journals Practically Realizable Circuits for OTRA and their Implementation in Oscillators

2021 ◽  
Author(s):  
Bhawna Aggarwal ◽  
◽  
Rachit Bansal ◽  
Palak Agarwal ◽  
Shweta Gautam ◽  
...  
Keyword(s):  
Operational Amplifier ◽  
Current Conveyors ◽  
Operational Transconductance Amplifier ◽  
Passive Components ◽  
Oscillator Circuit ◽  
Operational Transresistance Amplifier ◽  
Transconductance Amplifier ◽  
Current Voltage

In this paper, practical circuits for operational transresistance amplifier (OTRA) realizable in lab using commercial ICs have been designed and proposed. 3 structures based on operational amplifier (OPAMP-LM741), operational transconductance amplifier (OTA-CA3080) and current conveyors II (AD844) have been proposed. In these proposed designs, conditions to mimic the current-voltage behavior of OTRA have been formulated using active and passive components. Moreover, these components are also used to achieve flexibility in transresistance gain of implemented OTRA. The behavior of the proposed OTRA structures have been validated using LTSPICE. Furthermore, to represent practical usability of these designs oscillator circuit have been designed and implemented on software and experimentally also on bread board. All the results prove the OTRA operation of the designed circuits and their usability in the practical environment.

scholarly journals Synthesis of a Novel Low-Component Programmable Sinusoidal Oscillator

2003 ◽  
Vol 26 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Sa'ad Muhammad Al-Shahrani
Keyword(s):  
Excellent Agreement ◽  
Operational Amplifier ◽  
Operational Transconductance Amplifier ◽  
Current Feedback ◽  
Transconductance Amplifier ◽  
Sinusoidal Oscillator ◽  
Current Feedback Operational Amplifier ◽  
Synthesis Approach

A novel circuit is presented for realizing a sinusoidal oscillator. The proposed circuit, developed through a true synthesis approach, uses one current-feedback operational amplifier (CFOA), one operational transconductance amplifier (OTA), three grounded capacitors and one floating resistor. The proposed circuit enjoys several attractive features. Practical results, in excellent agreement with the presented theory, are included.

Low Power Operational Transconductance Amplifier (OTA) with Enhanced DC Gain and Slew-Rate

2013 ◽  
Vol 411-414 ◽  
pp. 1645-1648
Author(s):  
Xiao Zong Huang ◽  
Lun Cai Liu ◽  
Jian Gang Shi ◽  
Wen Gang Huang ◽  
Fan Liu ◽  
...  
Keyword(s):  
Low Voltage ◽  
Cmos Technology ◽  
Optimization Techniques ◽  
Current Mirror ◽  
Slew Rate ◽  
Operational Transconductance Amplifier ◽  
Theory Analysis ◽  
Transconductance Amplifier ◽  
Dc Gain ◽  
Simulation Results

This paper presents a low-voltage differential operational transconductance amplifier (OTA) with enhanced DC gain and slew-rate. Based on the current mirror OTA topology, the optimization techniques are discussed in this work. The proposed structure achieves enhanced DC gain, unit gain frequency (UGF) and slew-rate (SR) with adding four devices. The design of the OTA is described with theory analysis. The OTA operates at the power supply of 1.8V. Simulation results for 0.18μm standard CMOS technology show that the DC gain increases from 60.6dB to 65dB, the UGF is optimized from 2.5MHz to 4.3MHz, the SR is enhanced from 0.88 V/μs to 4.8 V/μs with close power consumption dramatically.

Arbitrary Waveform Generators Using Current-Controlled Current Conveyor Transconductance Amplifier and Current Conveyor Analog Switches

2019 ◽  
Vol 28 (11) ◽  
pp. 1950179
Author(s):  
Montree Kumngern ◽  
Thanat Nonthaputha ◽  
Fabian Khateb
Keyword(s):  
Amplitude Modulation ◽  
High Frequency ◽  
Bias Current ◽  
Current Conveyor ◽  
Phase Shift Keying ◽  
Information Signal ◽  
Transconductance Amplifier ◽  
Shift Keying ◽  
Simulation Results ◽  
Arbitrary Waveform

This paper presents a new amplitude modulation (AM), frequency modulation (FM), amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK) and quadrature amplitude modulation (QAM) waveform generators using current current-controlled conveyor transconductance amplifier (CCCTA) and current conveyor analog switches (CCASs). The CCCTA around with capacitors and resistors are used to generate high-frequency carrier which is worked as a quadrature oscillator. The oscillating frequency of oscillator can be controlled using the bias current of CCCTA, therefore FM and FSK waveforms can be obtained by applying information signal through the bias current of CCCTA. Unlike previous waveform generators, proposed circuit uses second generation current conveyor (CCII) to work as CCAS and AM, ASK, PSK and QAM waveforms can be obtained by putting information signals to control switches that realized using CCIIs. The proposed circuit has been simulated using 0.18[Formula: see text][Formula: see text]m CMOS [Formula: see text]-well process from TSMC. The simulation results are used to confirm workability of the proposed circuit.

Sign in / Sign up

Export Citation Format

Share Document