WO1997002652A3 - Tunable crystal oscillator with harmonic output - Google Patents

Tunable crystal oscillator with harmonic output Download PDF

Info

Publication number
WO1997002652A3
WO1997002652A3 PCT/IB1996/000529 IB9600529W WO9702652A3 WO 1997002652 A3 WO1997002652 A3 WO 1997002652A3 IB 9600529 W IB9600529 W IB 9600529W WO 9702652 A3 WO9702652 A3 WO 9702652A3
Authority
WO
WIPO (PCT)
Prior art keywords
osl
vcxo
oscillation loop
oscillator arrangement
crystal oscillator
Prior art date
Application number
PCT/IB1996/000529
Other languages
French (fr)
Other versions
WO1997002652A2 (en
Inventor
Amesfoort Alfonsus Maria Van
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to EP96915119A priority Critical patent/EP0778994A2/en
Priority to JP9504935A priority patent/JPH10505728A/en
Publication of WO1997002652A2 publication Critical patent/WO1997002652A2/en
Publication of WO1997002652A3 publication Critical patent/WO1997002652A3/en

Links

Classifications

    • 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
    • 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
    • H03B1/00—Details
    • H03B1/04—Reducing undesired oscillations, e.g. harmonics
    • 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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • 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

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

In an oscillator arrangement (VCXO), an oscillation loop (OSL) oscillates at, approximately, the fundamental frequency of a crystal (XTL) included therein. The output signal (Sosc) of the oscillator arrangement (VCXO) is a harmonic extracted from the oscillation loop (OSL). To vary the frequency of the output signal (Sosc), tuning means (VAR) are included in the oscillation loop (OSL). A stage (FIL) in the oscillator arrangement (VCXO) prevents harmonic feedback into the oscillation loop (OSL). Such an oscillator arrangement (VCXO) can be tuned over a relatively large frequency range and has a monotonous tuning characteristic.
PCT/IB1996/000529 1995-06-30 1996-05-31 Tunable crystal oscillator with harmonic output WO1997002652A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96915119A EP0778994A2 (en) 1995-06-30 1996-05-31 Tunable crystal oscillator with harmonic output
JP9504935A JPH10505728A (en) 1995-06-30 1996-05-31 Tunable oscillator with harmonic output

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP95201793 1995-06-30
EP95201793.7 1995-06-30

Publications (2)

Publication Number Publication Date
WO1997002652A2 WO1997002652A2 (en) 1997-01-23
WO1997002652A3 true WO1997002652A3 (en) 1997-02-27

Family

ID=8220442

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1996/000529 WO1997002652A2 (en) 1995-06-30 1996-05-31 Tunable crystal oscillator with harmonic output

Country Status (4)

Country Link
US (1) US5712596A (en)
EP (1) EP0778994A2 (en)
JP (1) JPH10505728A (en)
WO (1) WO1997002652A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
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US5923221A (en) * 1997-03-12 1999-07-13 Zenith Electonics Corporation Oscillator for digital ATV signals having low phase noise
JP2000165142A (en) 1998-11-25 2000-06-16 Alps Electric Co Ltd Oscillation circuit
EP1184968A3 (en) * 2000-08-11 2002-11-06 Nihon Dempa Kogyo, Co., Ltd. High-frequency crystal oscillator
FR2814606A1 (en) * 2000-09-25 2002-03-29 Koninkl Philips Electronics Nv POLYPHASE FILTER SIGNAL SOURCE
JP3634753B2 (en) * 2001-01-16 2005-03-30 日本電波工業株式会社 Sync signal generator
US6836189B2 (en) * 2001-01-31 2004-12-28 Bentley N. Scott RF choke bias scheme for load pulled oscillators
JP2002237724A (en) * 2001-02-09 2002-08-23 Nippon Dempa Kogyo Co Ltd High frequency crystal oscillator
JP2002290153A (en) * 2001-03-22 2002-10-04 Nippon Dempa Kogyo Co Ltd Two-frequency switch-type high-frequency oscillator
JP3094707U (en) * 2002-12-17 2003-07-04 アルプス電気株式会社 Signal generator
KR20070004890A (en) * 2004-04-30 2007-01-09 코닌클리케 필립스 일렉트로닉스 엔.브이. Pulling-free lo generation system and method
US7236416B2 (en) 2004-05-21 2007-06-26 Qualcomm Incorporated Method and system for controlling refresh in volatile memories
US7079440B2 (en) 2004-05-27 2006-07-18 Qualcomm Incorporated Method and system for providing directed bank refresh for volatile memories
US7184350B2 (en) 2004-05-27 2007-02-27 Qualcomm Incorporated Method and system for providing independent bank refresh for volatile memories
EP2106028A1 (en) * 2008-03-26 2009-09-30 Nokia Siemens Networks Oy Circuit arrangement and method of operation
CN104683653B (en) * 2013-11-30 2018-12-14 南宁富桂精密工业有限公司 Clock signal generating circuit and video processing circuit
CN103813055B (en) * 2013-12-27 2017-08-11 宇龙计算机通信科技(深圳)有限公司 A kind of clock oscillation circuit and video-unit
US9413519B2 (en) 2014-04-11 2016-08-09 Thomas & Betts International, Inc. Wireless transmission synchronization using a power line signal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587497A (en) * 1984-12-24 1986-05-06 Motorola, Inc. Low-power low-harmonic transistor oscillator
US4988957A (en) * 1989-05-26 1991-01-29 Iowa State University Research Foundation, Inc. Electronically-tuned thin-film resonator/filter controlled oscillator
US5263197A (en) * 1991-09-20 1993-11-16 Matsushita Communication Industrial Corporation Of America Dual port oscillator for two-stage direct conversion receiver
US5309116A (en) * 1990-09-13 1994-05-03 Frequency Electronics, Inc. Multimode crystal oscillator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915708A (en) * 1955-08-15 1959-12-01 Motorola Inc Transistor oscillator with harmonically tuned output circuit
US3382447A (en) * 1966-10-18 1968-05-07 Sanders Associates Inc Ultrastable crystal-controlled transistor oscillator-multiplier
US3528032A (en) * 1967-10-30 1970-09-08 Motorola Inc Frequency modulated crystal oscillator including voltage variable capacitor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587497A (en) * 1984-12-24 1986-05-06 Motorola, Inc. Low-power low-harmonic transistor oscillator
US4988957A (en) * 1989-05-26 1991-01-29 Iowa State University Research Foundation, Inc. Electronically-tuned thin-film resonator/filter controlled oscillator
US5309116A (en) * 1990-09-13 1994-05-03 Frequency Electronics, Inc. Multimode crystal oscillator
US5263197A (en) * 1991-09-20 1993-11-16 Matsushita Communication Industrial Corporation Of America Dual port oscillator for two-stage direct conversion receiver

Also Published As

Publication number Publication date
WO1997002652A2 (en) 1997-01-23
JPH10505728A (en) 1998-06-02
EP0778994A2 (en) 1997-06-18
US5712596A (en) 1998-01-27

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