scholarly journals Active-Only Sinusoidal Oscillator Circuits

2001 ◽  
Vol 24 (4) ◽  
pp. 223-232 ◽  
Author(s):  
Muhammad Taher Abuelmaatti ◽  
Muhammad Ali Al-Qahtani
Keyword(s):  
Operational Amplifier ◽  
Current Control ◽  
Current Feedback ◽  
Operational Transconductance Amplifiers ◽  
Sinusoidal Oscillator ◽  
Condition Of Oscillation ◽  
Transconductance Amplifiers ◽  
Current Feedback Operational Amplifier ◽  
Oscillator Circuits

Two new active-only sinusoidal oscillator circuits are proposed. The first circuit uses one current feedback operational amplifier (CFOA) and four operational transconductance amplifiers (OTAs). The second circuit uses only four OTAs. Without using any external passive elements, voltage (or current) control of the frequency and condition of oscillation, of the two circuits, can be achieved by adjusting the bias currents of the OTAs. The proposed circuits enjoy low sensitivities.

scholarly journals New Grounded-Capacitor Sinusoidal Oscillators Using the Current-Feedback-Amplifier Pole

1998 ◽  
Vol 21 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Muhammad Taher Abuelma’atti ◽  
Husain Abdullah Al-Zaher
Keyword(s):  
Operational Amplifier ◽  
Experimental Results ◽  
Current Feedback ◽  
Sinusoidal Oscillators ◽  
Feedback Amplifier ◽  
Current Feedback Amplifier ◽  
Sinusoidal Oscillator ◽  
Current Feedback Operational Amplifier ◽  
Oscillator Circuits

New current-feedback-operational amplifier (CFOA)-pole-based sinusoidal oscillator circuits are presented. Each circuit uses two CFOAs, two (or three) grounded capacitors and/or resistors. Experimental results are included.

scholarly journals Active-Only Sinusoidal Oscillator with Electronically-Tunable Fully-Uncoupled Frequency and Condition of Oscillation

2001 ◽  
Vol 24 (4) ◽  
pp. 233-241 ◽  
Author(s):  
Muhammad Taher Abuelmaatti
Keyword(s):  
Second Generation ◽  
Operational Amplifiers ◽  
Current Conveyors ◽  
Oscillator Circuit ◽  
Operational Transconductance Amplifiers ◽  
Sinusoidal Oscillator ◽  
Condition Of Oscillation ◽  
Transconductance Amplifiers ◽  
Electronically Tunable

A new active-only sinusoidal oscillator is presented. The oscillator circuit uses two internally compensated operational amplifiers, two plus-type second-generation current conveyors and three operational transconductance amplifiers. The proposed circuit enjoys the attractive features of totally uncoupled frequency and condition of oscillation, low sensitivities, electronic tunability and integratability.

scholarly journals A Minimum Component Grounded-Capacitor CFOA-Based RC Oscillator

1997 ◽  
Vol 19 (4) ◽  
pp. 247-251 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Sa'ad Muhammad Al-Shahrani
Keyword(s):  
Operational Amplifier ◽  
Single Frequency ◽  
Current Feedback ◽  
Oscillator Circuit ◽  
Sinusoidal Oscillator ◽  
Passive Sensitivity ◽  
Current Feedback Operational Amplifier

A minimum-component grounded-capacitor single-frequency RC-sinusoidal oscillator circuit using the current feedback operational amplifier (CFOA) is presented. The circuit uses a single CFOA, two resistors, and two grounded capacitors. The circuit enjoys low active and passive sensitivity characteristics.

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.

scholarly journals Low-Voltage CMOS Current Feedback Operational Amplifier and Its Application

ETRI Journal ◽  
2007 ◽  
Vol 29 (2) ◽  
pp. 212-218 ◽  
Author(s):  
Soliman A. Mahmoud ◽  
Ahmed H. Madian ◽  
Ahmed M. Soliman
Keyword(s):  
Operational Amplifier ◽  
Low Voltage ◽  
Current Feedback ◽  
Current Feedback Operational Amplifier
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