Ring oscillator having a substantially sinusoidal signal

Details Ring oscillator having a substantially sinusoidal signal Ring oscillator having a substantially sinusoidal signal

1995-12-19

1997-10-14

Grimm, Siegfried H.

Oscillators

Ring oscillators

331105, 331108A, 331177R, H03B 502

Patent

active

056776500

ABSTRACT:
A ring oscillator comprising an odd number of inverters connected in a ring, and apparatus for driving the ring oscillator so that it oscillates at a frequency slightly less than its maximum oscillating frequency such that harmonics of the oscillating frequency are suppressed.

REFERENCES:
patent: 4855690 (1989-08-01), Dias
patent: 4988960 (1991-01-01), Tomisawa
patent: 5357217 (1994-10-01), Marchesi et al.
IBM Technical Disclosure Bulletin, vol. 31, No. 2, Jul. 1988, pp. 154-156, "CMOS Ring Oscillator With Controlled Frequency".

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