WIRELESS COMMUNICATION DEVICE WITH PHASE-LOCKED LOOP OSCILLATOR

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...

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Bibliographic Details
Main Author BRETT C. WALKER
Format Patent
LanguageEnglish
Published 23.01.2004
Edition7
Subjects
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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Summary: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.
Bibliography:Application Number: AU20030248839