Wireless communication device with phase-locked loop oscillator

Details Wireless communication device with phase-locked loop oscillator Wireless communication device with phase-locked loop oscillator

2005-05-03

2005-05-03

Wambach, Margaret R. (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

C377S048000

Reexamination Certificate

active

06888913

ABSTRACT:
A frequency generating circuit utilizes a quad modulus prescaler in which two control signals are used to select the prescaler modulus. The modulus control signals are generated by a multistage counter in which two independent counting stages are used to generate the first and second modulus control signals. The first modulus control signal is at a first logic level when the associated counter is at a non-zero value and is at a second logic level when the associated counter reaches zero. The second modulus control signal is generated by a second counter and has a first logic value when the second counter is in a non-zero state and a second logic value when the second counter reaches zero.

REFERENCES:
patent: 6369623 (2002-04-01), Heinen
patent: 6574288 (2003-06-01), Welland et al.

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