Microwave band frequency synthesizer

Details Microwave band frequency synthesizer Microwave band frequency synthesizer

1987-12-15

1988-12-13

LaRoche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 16, 331 18, 331 46, 331179, H03L 706

Patent

active

047913878

ABSTRACT:
A microwave band frequency synthesizer comprises first and second phase-locking loops. The first phase-locking loop includes a first voltage controlled oscillator, a variable frequency divider and a first multiplier and generates an output signal whose frequency changes at the rate of a unit frequency change width of the oscillator. The second phase-locking loop includes a first fixed frequency divider for frequency-dividing the output signal of the first phase-locking loop to provide a phase comparison reference signal of a frequency higher than that phase-compared in the first phase-locking loop, a second voltage controlled oscillator, a second fixed frequency divider for frequency dividing an output of the second voltage controlled oscillator, a second phase comparator for phase-comparing a frequency-divided an output signal of the second fixed frequency divider and the phase comparison reference signal in order for phase-locking of the second voltage controlled oscillator, and a second multiplier for multiplying the output signal from the second voltage controlled oscillator to provide a microwave band signal.

REFERENCES:
patent: 4720688 (1988-01-01), Hasegawa et al.
Ulrich, L., Rohde, Ph.D., Sc.D., "Digital PLL Frequency Synthesizers' Theory and Design", pp. 324-327.

Affiliated with

Also associated with

Rating

Microwave band frequency synthesizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2198504