Digital phase detector

Details Digital phase detector Digital phase detector

1988-11-02

1991-03-19

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Complex signal

342195, 342152, G01S 1344, G01S 1368

Patent

active

050014897

ABSTRACT:
A phase detector receives two input digital signals representing Cartesian coordinates of a vector and outputs a digital signal indicative of the phase angle of the vector. The input digital signals are logarithms of the square of, for example, in-phase and quadrature components of a radar signal and are subtracted in the phase detector to produce a difference signal having a magnitude and a polarity. The polarities of the difference signal and the two information signals are used to determine the octant of the phase angle by addressing a read only memory. The magnitude of the difference signal is used as an address of a read only memory storing digital values corresponding to angles within an octant. The octant output by the first read only memory and the angle output by the second read only memory together indicate the phase angle of the vector.

REFERENCES:
patent: 4137533 (1979-01-01), Briechle et al.
patent: 4231005 (1980-10-01), Taylor, Jr.
patent: 4560961 (1985-12-01), Kestenbaum
patent: 4591862 (1986-05-01), Parkhurst et al.
patent: 4926184 (1990-05-01), Galati et al.

Affiliated with

Also associated with

Rating

Digital phase detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital phase detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital phase detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2013325