Frequency synthesizer

Details Frequency synthesizer Frequency synthesizer

1989-06-20

1991-04-16

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328140, 307271, 331 14, 331 18, H03L 700, H03B 1900

Patent

active

050086294

ABSTRACT:
A frequency synthesizer for use in a high-frequency multichannel radio apparatus and so on. More particularly, a phase-locked loop (PLL) type frequency synthesizer which can perform a pulling process at high speed. Namely, a frequency synthesizer of the present invention can effect a pulling process at high speed by putting input signals to a phase comparator into a state in which the input signals are in phase with each other in an intermittent operation mode and can have strong resistance to noises by providing a 1-bit data latch and gate circuits in a data inputting portion thereof and synthesizing strobe signals at the time of inputting data thereto.

REFERENCES:
patent: 3982199 (1976-09-01), Green
patent: 4654859 (1987-03-01), Kung et al.
patent: 4673892 (1987-06-01), Miyashita et al.
patent: 4841255 (1989-06-01), Ohba et al.
patent: 4871981 (1989-10-01), Franklin

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