All-Pass Filter Based Linear Voltage Controlled Quadrature Oscillator
Joint Authors
Venkateswaran, Palaniandavar
Mathur, Koushick
Nandi, Rabindranath
Source
Active and Passive Electronic Components
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-29
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A linear voltage controlled quadrature oscillator implemented from a first-order electronically tunable all-pass filter (ETAF) is presented.
The active element is commercially available current feedback amplifier (AD844) in conjunction with the relatively new Multiplication Mode Current Conveyor (MMCC) device.
Electronic tunability is obtained by the control node voltage (V) of the MMCC.
Effects of the device nonidealities, namely, the parasitic capacitors and the roll-off poles of the port-transfer ratios of the device, are shown to be negligible, even though the usable high-frequency ranges are constrained by these imperfections.
Subsequently the filter is looped with an electronically tunable integrator (ETI) to implement the quadrature oscillator (QO).
Experimental responses on the voltage tunable phase of the filter and the linear-tuning law of the quadrature oscillator up to 9.9 MHz at low THD are verified by simulation and hardware tests.
American Psychological Association (APA)
Mathur, Koushick& Venkateswaran, Palaniandavar& Nandi, Rabindranath. 2017. All-Pass Filter Based Linear Voltage Controlled Quadrature Oscillator. Active and Passive Electronic Components،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1125305
Modern Language Association (MLA)
Mathur, Koushick…[et al.]. All-Pass Filter Based Linear Voltage Controlled Quadrature Oscillator. Active and Passive Electronic Components No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1125305
American Medical Association (AMA)
Mathur, Koushick& Venkateswaran, Palaniandavar& Nandi, Rabindranath. All-Pass Filter Based Linear Voltage Controlled Quadrature Oscillator. Active and Passive Electronic Components. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1125305
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125305