Inductorless MMIC oscillator

Details Inductorless MMIC oscillator Inductorless MMIC oscillator

1987-12-18

1989-03-28

LaRoche, Eugene R.

Oscillators

Ring oscillators

331108B, H03B 518

Patent

active

048167789

ABSTRACT:
When an oscillator is required to operate at high frequencies, there may be more than one frequency that can provide the required 360.degree. phase shift in the feedback signal, and thus more than one oscillating frequency. The present invention eliminates prior art inductors in assuring (for oscillators having an odd number of stages) that there is only a single range of frequencies having the desired phase shift in the feedback loop. In a three-stage oscillator, this is accomplished by designing the circuit to have 120.degree. of phase shift in each stage at the desired oscillatory RF frequency, but 180.degree. of phase shift at near DC frequency.

REFERENCES:
patent: 4547749 (1985-10-01), Kuo

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