OSCILLATOR HAVING MULTI-PHASE COMPLEMENTARY OUTPUTS

WIPO Patent Application WO2001043274

A3

An oscillator having multi-phase complementary outputs comprises a first plurality of single ended bistable amplifiers (A1-A3) connected in series to form an input and an output and a second plurality of single ended bistable amplifiers (A4-A6) connected in series to form an input and an output. The first and second plurality have the same odd number of amplifiers. A first feedback path (FB1) connects the output to the input of the first plurality of amplifiers to establish bistable oscillations in the first plurality of amplifiers at a frequency dependent upon the delay time from the input to the output of the first plurality. A second feedback path (FB2) connects the output to the input of the second plurality of amplifiers to establish bistable oscillations in the second plurality of amplifiers at a frequency dependent upon the delay time from the input to the output of the second plurality. A first locking circuit (L1) is connected between comparable first points in the first and second plurality of amplifiers to ensure that the first points are oscillating in complementary fashion and a second locking circuit (L2) is connected between comparable second points in the first and second plurality of amplifiers to ensure that the second points are oscillating in complementary fashion.

JPS5866734	[Title of the device] Oscillating circuit
JPS5521639	CLOCK GENERATION CIRCUIT
JPS5912818	[Title of the device] Multi-vibrator

AFGHAHI MORTEZA CYRUS (US)

PCT/US2000/042762

January 31, 2002

December 12, 2000

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BROADCOM CORP (US)
AFGHAHI MORTEZA CYRUS (US)

H03K3/03; (IPC1-7): H03K3/03

US5635877A	1997-06-03
US5731734A	1998-03-24

See also references of EP 1240714A2

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