Constant phase delay network having a coherent reference

Details Constant phase delay network having a coherent reference Constant phase delay network having a coherent reference

1977-05-23

1978-09-12

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

178 70T, 179170R, 328155, 331 25, H03B 304, H04B 336

Patent

active

041141113

ABSTRACT:
The delay elements of a signal energy transmission network are divided into separate portions through which the transmitted energy is phase shifted by substantially equal amounts. A phase correction circuit reverses the phase shift through one of the divided delay portions by providing a locked oscillator operating at twice the frequency of the signal at a reference phase angle and subtracting therefrom the input frequency of the signal phase shifted through said one of the divided delay portions in order to maintain a constant frequency vs. phase relationship.

REFERENCES:
patent: 3805173 (1974-04-01), Nakamura et al.
patent: 3992581 (1976-11-01), Davis

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