DocumentCode
1297299
Title
Current amplitude control circuits suitable for current-mode oscillators
Author
Pookaiyaudom, S. ; Thanachayanont, A. ; Sitdhikorn, R.
Author_Institution
Fac. of Eng., Mahanukorn Univ. of Technol., Bangkok, Thailand
Volume
33
Issue
1
fYear
1997
fDate
1/2/1997 12:00:00 AM
Firstpage
2
Lastpage
3
Abstract
A novel current amplitude control circuit suitable for current-mode oscillators is proposed. The circuit is a modified version of the well-known Gilbert gain cell. The technique obtains independent control of oscillation amplitude and small-signal current gain. As an example, the amplitude control circuit is applied to a current-mode oscillator. Simulations were carried out using HSPICE with 0.8 μm Nortel BiCMOS technology and Motorola RF transistors. Simulated results demonstrate that the nonlinear current gain control circuit behaves in a well defined manner. Low distortion and high frequency oscillations are easily obtained when the circuit is applied to a current-mode oscillator
Keywords
electric current control; oscillators; 0.8 micron; Gilbert gain cell; HSPICE simulation; Motorola RF transistor; Nortel BiCMOS technology; current amplitude control circuit; current-mode oscillator; nonlinear current gain; small-signal current gain;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970024
Filename
555035
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