GB1472884A - Crystal oscillator modulating circuit - Google Patents

Crystal oscillator modulating circuit

Info

Publication number
GB1472884A
GB1472884A GB1821774A GB1821774A GB1472884A GB 1472884 A GB1472884 A GB 1472884A GB 1821774 A GB1821774 A GB 1821774A GB 1821774 A GB1821774 A GB 1821774A GB 1472884 A GB1472884 A GB 1472884A
Authority
GB
United Kingdom
Prior art keywords
crystal
crystal oscillator
modulating circuit
inductor
april
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.)
Expired
Application number
GB1821774A
Other languages
English (en)
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1472884A publication Critical patent/GB1472884A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
    • H03C3/222—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode using bipolar transistors
    • 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
    • H03B2200/007—Generation of oscillations based on harmonic frequencies, e.g. overtone oscillators
    • 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
    • H03B5/362—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 the amplifier being a single transistor
    • 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
    • H03B5/368—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 the means being voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0079—Measures to linearise modulation or reduce distortion of modulation characteristics

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
GB1821774A 1973-04-27 1974-04-25 Crystal oscillator modulating circuit Expired GB1472884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48047856A JPS49135558A (fr) 1973-04-27 1973-04-27

Publications (1)

Publication Number Publication Date
GB1472884A true GB1472884A (en) 1977-05-11

Family

ID=12786999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1821774A Expired GB1472884A (en) 1973-04-27 1974-04-25 Crystal oscillator modulating circuit

Country Status (5)

Country Link
JP (1) JPS49135558A (fr)
CA (1) CA996206A (fr)
DE (1) DE2420420A1 (fr)
FR (1) FR2227683B1 (fr)
GB (1) GB1472884A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274033A (en) * 1992-12-16 1994-07-06 Murata Manufacturing Co Voltage controlled oscillator
WO2009077856A3 (fr) * 2007-12-14 2009-08-13 Acp Advanced Circuit Pursuit A Bobine d'inductance variable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904045C2 (de) * 1979-02-02 1982-04-15 Siemens AG, 1000 Berlin und 8000 München Quarzoszillator mit gemischt induktiver und kapazitiver Schwingfrequenzsteuerung
IT1137411B (it) * 1981-03-05 1986-09-10 Italtel Spa Circuito per segnali ad altissima frequenza comprendente almeno una microstriscia
JPS57166704A (en) * 1981-04-06 1982-10-14 Nec Corp Voltage-controlled oscillator
JP2007049254A (ja) * 2005-08-08 2007-02-22 Nippon Dempa Kogyo Co Ltd 水晶発振器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925561A (en) * 1955-07-01 1960-02-16 Motorola Inc Crystal oscillator system
US3382463A (en) * 1967-02-20 1968-05-07 Damon Eng Inc Variable frequency voltage controlled crystal oscillator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274033A (en) * 1992-12-16 1994-07-06 Murata Manufacturing Co Voltage controlled oscillator
US5379003A (en) * 1992-12-16 1995-01-03 Murata Manufacturing Co., Ltd. VCO and buffer having noise filter on power supply line
GB2274033B (en) * 1992-12-16 1996-10-30 Murata Manufacturing Co Voltage-controlled oscillation circuit
WO2009077856A3 (fr) * 2007-12-14 2009-08-13 Acp Advanced Circuit Pursuit A Bobine d'inductance variable
CN101904096A (zh) * 2007-12-14 2010-12-01 Acp尖端电路钻研股份公司 可变电感器
CN101904096B (zh) * 2007-12-14 2014-05-28 Acp尖端电路钻研股份公司 可变电感器

Also Published As

Publication number Publication date
CA996206A (en) 1976-08-31
JPS49135558A (fr) 1974-12-27
FR2227683A1 (fr) 1974-11-22
DE2420420A1 (de) 1974-11-07
FR2227683B1 (fr) 1978-06-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940424