Results 31 to 40 of about 186,677 (204)

0.5 V Universal Filter and Quadrature Oscillator Based on Multiple-Input DDTA

IEEE Access, 2023
This paper presents a universal voltage-mode filter and quadrature oscillator based on low-voltage multiple-input differential difference transconductance amplifier (MI-DDTA).
Montree Kumngern, Fabian Khateb, Tomasz Kulej   +2 more
doaj   +1 more source

VDCC Based Dual-Mode Quadrature Sinusoidal Oscillator with Outputs at Appropriate Impedance Levels

Advances in Electrical and Electronic Engineering, 2016
This article presents a new dual-mode (i.e. both current-mode and voltage-mode) quadrature sinusoidal oscillator using two Voltage Differencing Current Conveyors (VDCCs), two resistors and two capacitors.
Mayank Srivastava, Dinesh Prasad
doaj   +1 more source

SINGLE ACTIVE ELEMENT BASED MIXED-MODE QUADRATURE OSCILLATOR USING GROUNDED COMPONENTS

Electrica, 2019
The paper presents a mixed mode quadrature oscillator (MMQO) using single active element and all grounded passive components. The proposed circuit employs single DD-DXCCII, three grounded resistors and two grounded capacitors.
Bhartendu CHATURVEDI, Jitendra MOHAN
doaj   +2 more sources

A novel voltage-mode universal second-order filter using five single ended OTAs and its quadrature sinusoidal oscillator application

Measurement + Control, 2022
This study proposes a single-ended operational trans-conductance amplifier (SEOTA)-based triple inputs and single output high-input impedance voltage-mode (VM) universal second-order filter.
San-Fu Wang, Hua-Pin Chen, Yitsen Ku, Yi-Chun Lin   +3 more
doaj   +1 more source

Low-frequency, Low-distortion Digital Quadrature Oscillator

, 1989
Digital recursive and non-recursive filtering techniques have both been exploited to build a low-frequency (0.5-50 Hz), low-distortion digital quadrature oscillator.
BORGHESANI, ARMANDO-FRANCESCO, A F Borghesani   +1 more
core   +1 more source

Electronically Tunable Quadrature Oscillator Employing Single Differential Difference Transconductance Amplifier [PDF]

, 2017
In this paper, we present new voltage mode quadrature oscillator, employing single differential difference transconductance amplifier. The proposed oscillator structure consists of two grounded capacitors and a single resistor.
Kacar, F., Konal, M., Yesil, A., A. Yesil, F. Kacar, M. Konal, Kacar, FIRAT   +6 more
core   +1 more source

A precise 90º quadrature OTA-C oscillator tunable in the 50-130-MHz range [PDF]

, 2004
We present a very-large-scale integration continuous-time sinusoidal operational transconductance amplifiers quadrature oscillator fabricated in a standard double-poly 0.8-μm CMOS process.
Ceballos Cáceres, Joaquín Francisco, Linares Barranco, Bernabé, Linares Barranco, Alejandro, Serrano Gotarredona, María Teresa, Ramos Martos, J.   +4 more
core   +2 more sources

A Current Mode Universal Filter and a Single Resistance Controlled Oscillator Employing only Grounded Passive Elements: Applications of VDCC

Electronics, 2021
This research article explores the possible applications of voltage differencing current conveyor (VDCC), as a current mode universal filter and a sinusoidal oscillator.
Tajinder Singh Arora
doaj   +1 more source

Parasitic-compensated quadrature LC oscillator

, 2004
The paper presents a method for improving the phase noise performance of a CMOS quadrature LC oscillator through parasitic compensation. Owing to the parasitic resistance in the inductor, the LC oscillator suffers from a low Q-value, which degrades its ...
Boon, Chirn Chye, Do, Manh Anh, Yeo, Kiat Seng, Ma, Jianguo, Zhao, R. Y., K.S. Yeo, J.G. Ma, R.Y. Zhao, C.C. Boon, M.A. Do   +9 more
core   +1 more source

Nonlinear Analysis of a Cross-Coupled Quadrature Harmonic Oscillator [PDF]

, 2004
We derive the dynamic equations governing the cross-coupled quadrature oscillator leading to an expression for the trade-off between signal quadrature and close-in phase noise.
Djurhuus, Torsten, Johansen, Tom Keinicke, Krozer, Viktor, Vidkjær, Jens   +3 more
core   +1 more source