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Synthesis of first-order active-R allpass networks and their application in sinusoidal oscillator design

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1 Author(s)
Vosper, J.V. ; Manchester Polytech., UK

An active-R oscillator is described which uses two cascaded allpass networks. Equal-amplitude quadrature outputs are available, and the oscillation frequency is controlled by a pair of equal grounded resistors. This makes the design useful for electronic variation of frequency or for digital programming of frequency using programmable resistor arrays.

Published in:
Electronics Letters  (Volume:27 ,  Issue: 1 )

Date of Publication: 3 Jan. 1991

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