Digital frequency generation device

Details Digital frequency generation device Digital frequency generation device

1993-03-02

1995-03-21

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synthesizer

331 49, 327113, 327141, 327233, H03B 1900

Patent

active

053999843

ABSTRACT:
A digital frequency generating device is comprised of a first digital frequency generator which generates a first output signal at a first frequency and a second digital frequency generator which generates a second output signal at a second frequency independent of the first frequency. Both the first and the second frequency generators run continuously and either can be connected to the generating device output by means of a multiplexer. Apparatus is provided to synchronize the two generators so that a continuous phase transition is maintained when the generating device output switches from the first output signal to the second output signal. This arrangement allows the device output to be shifted from a first frequency to a second frequency and then return to the first frequency output while maintaining the phase position of the first frequency output and is particularly useful in nuclear magnetic resonance applications.

REFERENCES:
patent: 3708686 (1973-01-01), Butler, Jr. et al.
patent: 3986136 (1976-10-01), Hurlburt
patent: 4121172 (1978-10-01), Garde
patent: 4659999 (1987-04-01), Motoyama et al.
patent: 5084681 (1992-01-01), Kovalick et al.
patent: 5122677 (1992-06-01), Sato
patent: 5136180 (1992-08-01), Caviasca et al.
patent: 5159278 (1992-10-01), Mattison
patent: 5179348 (1993-01-01), Thompson
patent: 5270669 (1993-12-01), Jokura

Affiliated with

Also associated with

Rating

Digital frequency generation device 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 frequency generation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital frequency generation device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1151765