Conference Proceeding

Current-mode multiphase sinusoidal oscillator using current-controlled current differencing transconductance amplifiers

01/2011; DOI:10.1109/APCCAS.2010.5774818 pp.728 - 731 In proceeding of: Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on
Source: IEEE Xplore

ABSTRACT This paper presents a new current-mode multiphase sinusoidal oscillator employing current-controlled current differencing transconductance amplifiers (CCCDTAs). The proposed oscillator circuit, which employs one CCCDTA, one grounded capacitor and one grounded resistor for each phase, can generate arbitrary n output current equal-amplitude signals that are equally spaced in phase (n being even or odd), all at high output impedance terminals. The frequency of oscillation and the condition of oscillation can be controlled electronically and independently through adjusting the bias current of the CCCDTA. The proposed oscillator is highly suitable for integrated circuit implementation. The theoretical results were verified by PSPICE simulation.

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Keywords

bias current
 
CCCDTAs
 
employs one CCCDTA
 
new current-mode multiphase sinusoidal oscillator
 
odd
 
oscillation
 
output impedance terminals
 
paper presents
 
spaced
 
theoretical results
 

M. Kumngern