AU2002232676A1 - Circuit and method for processing afc signals - Google Patents

Circuit and method for processing afc signals

Info

Publication number
AU2002232676A1
AU2002232676A1 AU2002232676A AU2002232676A AU2002232676A1 AU 2002232676 A1 AU2002232676 A1 AU 2002232676A1 AU 2002232676 A AU2002232676 A AU 2002232676A AU 2002232676 A AU2002232676 A AU 2002232676A AU 2002232676 A1 AU2002232676 A1 AU 2002232676A1
Authority
AU
Australia
Prior art keywords
circuit
processing
afc signals
afc
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2002232676A
Inventor
Danielle L. Coffing
William Eric Main
Klaas Wortel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of AU2002232676A1 publication Critical patent/AU2002232676A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45278—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using BiFET transistors as the active amplifying circuit
    • H03F3/45282—Long tailed pairs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45344—At least one of the AAC sub-circuits being a current mirror
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45394—Indexing scheme relating to differential amplifiers the AAC of the dif amp comprising FETs whose sources are not coupled, i.e. the AAC being a pseudo-differential amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45396—Indexing scheme relating to differential amplifiers the AAC comprising one or more switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45674—Indexing scheme relating to differential amplifiers the LC comprising one current mirror
AU2002232676A 2001-12-26 2001-12-26 Circuit and method for processing afc signals Abandoned AU2002232676A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/049444 WO2003058815A1 (en) 2001-12-26 2001-12-26 Circuit and method for processing afc signals

Publications (1)

Publication Number Publication Date
AU2002232676A1 true AU2002232676A1 (en) 2003-07-24

Family

ID=21743142

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002232676A Abandoned AU2002232676A1 (en) 2001-12-26 2001-12-26 Circuit and method for processing afc signals

Country Status (2)

Country Link
AU (1) AU2002232676A1 (en)
WO (1) WO2003058815A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247834A (en) * 1979-02-15 1981-01-27 Gte Products Corporation Control circuit for establishing voltage-controlled or injection-locked operation of a synthesizer reference oscillator
US4277695A (en) * 1979-07-16 1981-07-07 Rca Corporation Amplifier having dead zone of controllable width and position
JPS5741018A (en) * 1980-08-25 1982-03-06 Mitsubishi Electric Corp Dynamic tracking filter of injection synchronizing oscillator type
US5382921A (en) * 1992-11-23 1995-01-17 National Semiconductor Corporation Automatic selection of an operating frequency in a low-gain broadband phase lock loop system
US5463353A (en) * 1994-09-06 1995-10-31 Motorola, Inc. Resistorless VCO including current source and sink controlling a current controlled oscillator
US6133802A (en) * 1998-01-26 2000-10-17 Lucent Technologies Inc. Synchronous carrier recovery circuit and injection locked oscillator
EP1093227A1 (en) * 1999-10-14 2001-04-18 Motorola, Inc. Digital phase-locked loop circuit

Also Published As

Publication number Publication date
WO2003058815A1 (en) 2003-07-17

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase