Phase shift circuit utilizing a variable time delay line

Details Phase shift circuit utilizing a variable time delay line Phase shift circuit utilizing a variable time delay line

1987-10-19

1989-10-10

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 55, 307511, 307262, 331 25, H03K 5159, H03K 513

Patent

active

048734918

ABSTRACT:
A closed loop variable phase shift circuit utilizing a variable time delay line controlled by feedback provided by a phase detector. The circuit employs feedback control to adjust the delay of the time delay line to achieve the desired phase shift. By utilizing a variable time delay element of large dynamic range, the circuit can achieve the desired phase shift over a wide frequency range. The circuit provides an extremely accurate phase shift without need for a multitude of high precision matched components. The circuit is easily realizable in integrated circuit form. The circuit can be implemented to phase shift either analog or digital input signals. The amount of phase shift is set by an externally applied voltage.

REFERENCES:
patent: 3436647 (1969-04-01), Gobeli et al.
patent: 3624274 (1971-11-01), Araki
patent: 4169995 (1979-10-01), Wise et al.
patent: 4187473 (1980-02-01), Cochran
patent: 4309649 (1982-01-01), Naito
patent: 4626796 (1986-12-01), Elder
patent: 4694259 (1987-09-01), Carickhoff et al.
patent: 4706040 (1987-11-01), Mehrgardt
Routledge et al., "A Phase Locked Loop Phase Shifter for Band Limited Signals", R&E Engineer, vol. 47, No. 3, Mar. 1977, pp. 117-120.

Affiliated with

Also associated with

Rating

Phase shift circuit utilizing a variable time delay line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase shift circuit utilizing a variable time delay line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase shift circuit utilizing a variable time delay line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1959657