Frequency synthesizer

Details Frequency synthesizer Frequency synthesizer

H - Electricity

03

L

331/32

H03L 7/18 (2006.01) H03L 7/08 (2006.01) H03L 7/199 (2006.01)

Patent

CA 1264827

ABSTRACT A frequency synthesizer applicable to a radio communication equipment includes a switch for connecting and disconnecting a phase comparator adapted to produce a voltage representative of a difference in phase between outputs of a variable and a fixed frequency dividers, which it compares with each other, and a low pass filter, and a reset circuit for producing a reset signal interlocked with a power source of the synthesizer. The variable and the fixed frequency dividers are reset by the reset signal while the switch is closed after the generation of the reset signal and opened upon turn-off of the power source.

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