Title :
Synthesis of first-order active-R allpass networks and their application in sinusoidal oscillator design
Author_Institution :
Manchester Polytech., UK
Abstract :
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.
Keywords :
active networks; all-pass filters; frequency control; frequency stability; linear network synthesis; variable-frequency oscillators; active-R oscillator; digital programming of frequency; electronic variation of frequency; equal amplitude quadrature outputs; first-order active-R allpass networks; oscillation frequency; pair of equal grounded resistors; programmable resistor arrays; quadrature oscillator; sinusoidal oscillator; two cascaded allpass networks;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910034
