Fractional phase shift ring oscillator arrangement

Details Fractional phase shift ring oscillator arrangement Fractional phase shift ring oscillator arrangement

1993-12-29

1995-02-28

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular frequency control means

331 45, 331 57, 331 60, 331177R, H03B 502, H03B 2700, H03L 7099, H03L 718

Patent

active

053941160

ABSTRACT:
A ring oscillator has a plurality of oscillator outputs, each of which carries an oscillating signal of a given frequency and thus repetition period but with a phase shift of a predetermined fraction of the repetition period from any one of the oscillator outputs to a next oscillator output in a predetermined repetitive sequence. The inputs of a selector are each connected to a respective one of the oscillator outputs. The selector includes a number of individually actuatable selector switches that are so actuated as to establish a connection between the selector output and only any selected one of the selector inputs at any time. The actuation is accomplished in a first mode, in which the selector switches maintain the connection, or in a second mode in which the selector switches intermittently index the connection in the predetermined repetitive sequence among the selector inputs.

REFERENCES:
patent: 5059924 (1991-10-01), JenningsCheck
patent: 5126691 (1992-06-01), Mijuskovic et al.
patent: 5233316 (1993-08-01), Yamada et al.

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