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Author Prommee, P. ♦ Somdunyakanok, M. ♦ Angkeaw, K.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Oscillators ♦ Power harmonic filters ♦ Capacitors ♦ Transistors ♦ Active filters ♦ Transfer functions ♦ quadrature oscillator ♦ log-domain filtering ♦ high-frequency ♦ low-voltage ♦ electronically-controlled
Abstract A log-domain current-mode quadrature sinusoidal oscillator based on all-pass filter and lossless integrator is presented. The oscillator is realized by a first-order differential equation for obtaining all pass filter and lossless integrator. The proposed oscillator can be electronically tuned by adjusting bias currents. The proposed oscillator contains 18 NPN transistors, 2 grounded capacitors and 11 bias currents for achieving low-power and fast response. A validated BJT model is used in SPICE simulation operated from a single power supply as low as 2.5V. The oscillation frequency is controlled over four decades of frequency. The total harmonic distortion of signal output is obtained around 0.55%. The oscillation frequency can be operated more than 100MHz which enables fully integrated in telecommunication systems and suitable for high-frequency applications. SPICE simulation results are included.
Description Author affiliation: Electrical Engineering Department, Faculty of Engineering, Siam University, Bangkok 10160, Thailand (Somdunyakanok, M.) || Telecommunications Engineering Department, Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand (Prommee, P.) || Instrumentation and Electronics Engineering Department, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, 10800, Thailand (Angkeaw, K.)
ISBN 9781457702563
ISSN 21593450
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-11-21
Publisher Place Indonesia
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781457702556
Size (in Bytes) 2.79 MB
Page Count 4
Starting Page 685
Ending Page 688


Source: IEEE Xplore Digital Library