Answers are grounded in this paper and cite their sources.
A method of modifying a phase-shift RC oscillator for the purpose of FM is described. Two diodes are used to replace resistors and act as current controlled elements. Good linearity and stability is achieved.
No takes yet. Share an insight, caveat, or question.
N. Lupu (1963) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: