Digital phase shifting apparatus which compensates for change of

Details Digital phase shifting apparatus which compensates for change of Digital phase shifting apparatus which compensates for change of

1982-07-19

1985-01-22

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

331 17, 331 25, 375120, 455260, 328 24, 328155, H03H 1120, H03L 706

Patent

active

044954735

ABSTRACT:
Phase shifting apparatus is illustrated using a feedback loop to monitor the frequency and correct the phase shifting mechanism so that the desired amount of phase shift will occur at all frequencies. The phase shifter comprises a multistage storage means which samples the incoming signal periodically and outputs this information after a time delay. This time delay will vary for a given amount of phase shift depending upon the frequency. Thus, the feedback loop adjusts the sampling time whereby the time period of the sample times is electrically correct.

REFERENCES:
patent: 4190807 (1980-02-01), Weber
patent: 4309649 (1982-01-01), Naito
patent: 4336505 (1982-06-01), Meyer
patent: 4393516 (1983-07-01), Itani

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