MY112439A - Oscillator, synthesizer tuner circuit and am synchronous detect circuit employing the oscillator - Google Patents

Oscillator, synthesizer tuner circuit and am synchronous detect circuit employing the oscillator

Info

Publication number
MY112439A
MY112439A MYPI95000469A MYPI19950469A MY112439A MY 112439 A MY112439 A MY 112439A MY PI95000469 A MYPI95000469 A MY PI95000469A MY PI19950469 A MYPI19950469 A MY PI19950469A MY 112439 A MY112439 A MY 112439A
Authority
MY
Malaysia
Prior art keywords
voltage
oscillator
variable capacitor
circuit
desired frequency
Prior art date
Application number
MYPI95000469A
Inventor
Hirabayashi Atsushi
Komori Kenji
Original Assignee
Sony Corp
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
Priority claimed from JP6051245A external-priority patent/JPH07235874A/en
Application filed by Sony Corp filed Critical Sony Corp
Publication of MY112439A publication Critical patent/MY112439A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2281—Homodyne or synchrodyne circuits using a phase locked loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0036—Circuit elements of oscillators including an emitter or source coupled transistor pair or a long tail pair
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0058—Circuit elements of oscillators with particular transconductance characteristics, e.g. an operational transconductance amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0092—Measures to linearise or reduce distortion of oscillator characteristics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02—Varying the frequency of the oscillations by electronic means
    • H03B2201/0208—Varying the frequency of the oscillations by electronic means the means being an element with a variable capacitance, e.g. capacitance diode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

AN OSCILLATOR CAPABLE OF SETTING A DESIRED FREQUENCY BY USING ONLY TWO RESONATORS WITHOUT SETTING UP ANY ADDITIONAL ADJUSTMENT PROCESSES, AND A SYNTHESIZER TUNER CIRCUIT WITH AN AM SYNCHRONOUS DETECT CIRCUIT. THE OSCILLATOR COMPRISES A FIRST OSCILLATOR OSCILLATING AT A DESIRED FREQUENCY AS A RESULT OF INPUTTING A VOLTAGE FROM A PARALLELLY-CONNECTED FIRST RESONATOR AND FIRST VOLTAGE-VARIABLE CAPACITOR TO A CURRENT FEEDBACK LOOP OF A FIRST AMPLIFIER AND CONTROLLING A VOLTAGE APPLIED TO THE FIRST VOLTAGE-VARIABLE CAPACITOR; A SECOND OSCILLATOR OSCILLATING AT A DESIRED FREQUENCY AS A RESULT OF INPUTTING A VOLTAGE FROM A PARALLELLY-CONNECTED SECOND RESONATOR AND SECOND VOLTAGE-VARIABLE CAPACITOR TO A CURRENT FEEDBACK LOOP OF A SECOND AMPLIFIER AND CONTROLLING A VOLTAGE APPLIED TO THE SECOND VOLTAGE-VARIABLE CAPACITOR; A VOLTAGE GENERATOR FOR GENERATING A VOLTAGE TO BE APPLIED TO THE FIRST VOLTAGE-VARIABLE CAPACITOR AND A VOLTAGE TO BE APPLIED TO THE SECOND VOLTAGE-VARIABLE CAPACITOR BY COMPARING OUTPUTS FROM THE FIRST AND SECOND OSCILLATORS; AND A CONTROLLER FOR MAKING OSCILLATING FREQUENCIES FOR THE FIRST AND SECOND OSCILLATORS COINCIDE IN A PHASE-LOCKED LOOP CONSTRUCTED SO THAT THE POLARITIES OF THE VOLTAGES APPLIED TO THE FIRST AND SECOND VOLTAGE-VARIABLE CAPACITORS ARE DIFFERENT.FIGURE 8A
MYPI95000469A 1994-02-24 1995-02-23 Oscillator, synthesizer tuner circuit and am synchronous detect circuit employing the oscillator MY112439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6051245A JPH07235874A (en) 1994-02-24 1994-02-24 Oscillator, and synthesizer tuner circuit using and am synchronous detection circuit using the oscillator

Publications (1)

Publication Number Publication Date
MY112439A true MY112439A (en) 2001-06-30

Family

ID=12881576

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI95000469A MY112439A (en) 1994-02-24 1995-02-23 Oscillator, synthesizer tuner circuit and am synchronous detect circuit employing the oscillator

Country Status (3)

Country Link
KR (1) KR950035043A (en)
DE (1) DE69509287T2 (en)
MY (1) MY112439A (en)

Also Published As

Publication number Publication date
DE69509287T2 (en) 1999-12-02
KR950035043A (en) 1995-12-30
DE69509287D1 (en) 1999-06-02

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