Title :
Criteria for the onset of oscillation in microwave circuits
Author :
Jackson, Robert W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA
fDate :
3/1/1992 12:00:00 AM
Abstract :
A commonly used criterion for oscillator startup is demonstrated not to be universally valid. In order to investigate startup conditions, the Nyquist stability criterion is written in terms of microwave quantities. It is shown that widely available microwave CAD can be used to create Nyquist stability plots. Since the Nyquist criterion gives only global stability information, a convenient graphical criterion is developed to determine whether an oscillation will start up near a particular resonance frequency
Keywords :
Nyquist criterion; circuit CAD; circuit oscillations; circuit resonance; microwave circuits; microwave oscillators; Nyquist stability criterion; global stability information; graphical criterion; microwave CAD; microwave circuits; oscillator startup; resonance frequency; stability plots; Circuit stability; Microwave circuits; Microwave oscillators; Output feedback; RLC circuits; Reflection; Resonance; Resonant frequency; Stability criteria; Transfer functions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
