Method and circuit arrangement for generating a phase shifted cl

Details Method and circuit arrangement for generating a phase shifted cl Method and circuit arrangement for generating a phase shifted cl

1989-07-05

1991-05-14

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 307479, 328 63, 328155, 328 72, H03K 513, H03K 500

Patent

active

050158724

ABSTRACT:
A method and apparatus of generating a clock pulse signal, which is shifted by any desired, settable phase value between 0 and -.pi. by using two conventional phase shifters which can be set continuously between 0 and -.pi./2, wherein the two input ports of the first phase shifter are fed with the non-delayed frequency-halved signal and with the frequency-halved signal shifted in phase by -.pi./2, respectively, and the two input ports of the second phase shifter are fed with the frequency-halved signal shifted in phase by -.pi./2 and -.pi., respectively. Both phase shifters are actuated jointly, and subsequently the frequency of the thus phase shifted output signals being doubled again. The output or input signals or both of them of the two controllable phase shifters are each filtered through lowpass filters in such a manner that possibly existing harmonics are attenuated in amplitude relative to the frequency-halved signal whereby dynamic behavior and frequency behavior are improved considerably.

REFERENCES:
patent: 4160217 (1979-07-01), Ohsawa
patent: 4663594 (1987-05-01), Perkins
patent: 4833340 (1989-05-01), Deguchi
Dawson and Rogerson, "An Undersea Fiber-Optic Regenerator Using an Ingetral-Substrate Package and Flip-Chip SAW Mounting," Journal of Lightwave Technology, vol. LT-2, No. 6, Dec. 1984, pp. 926-932.
Tietze and Schenk, "Halbleiter-Schaltungstechnik," 1978, pp. 9-13.

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