WO1999048209A3 - Interacting oscillator and frequency discriminator with a common resonator or time delay unit - Google Patents

Interacting oscillator and frequency discriminator with a common resonator or time delay unit Download PDF

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Publication number
WO1999048209A3
WO1999048209A3 PCT/SE1999/000245 SE9900245W WO9948209A3 WO 1999048209 A3 WO1999048209 A3 WO 1999048209A3 SE 9900245 W SE9900245 W SE 9900245W WO 9948209 A3 WO9948209 A3 WO 9948209A3
Authority
WO
WIPO (PCT)
Prior art keywords
oscillator
phase
frequency discriminator
microwave
resonator
Prior art date
Application number
PCT/SE1999/000245
Other languages
French (fr)
Other versions
WO1999048209A2 (en
Inventor
Stefan Andersson
Original Assignee
Celsiustech Electronics Ab
Stefan Andersson
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 Celsiustech Electronics Ab, Stefan Andersson filed Critical Celsiustech Electronics Ab
Priority to AU27533/99A priority Critical patent/AU2753399A/en
Publication of WO1999048209A2 publication Critical patent/WO1999048209A2/en
Publication of WO1999048209A3 publication Critical patent/WO1999048209A3/en

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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
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Abstract

An oscillator (1) is stabilized by a frequency discriminator in order to reduce its phase noise. A microwave amplifier (4) supplies sufficient power to maintain the oscillation. The oscillator and the frequency discriminator use a common resonator or time delay unit (6). A pair of directional couplers (9, 11) deflect a little of the microwave incident upon the resonator (6) and a little of the microwave transmitted by the resonator. Resistors (12, 13) terminate the unconnected ports of the directional couplers. A fixed phase rotator (14) compensates for the longer route of one deflected microwave. A frequency discriminator signal (18) is generated by phase comparison (15), base-band amplification (16) and filtering (17) of the deflected and phase-compensated microwaves. The frequency discriminator signal controls the phase in the oscillator by means of, for example, a controllable phase rotator (2). In this connection, a control system which measures and corrects the phase error in the oscillator is obtained.
PCT/SE1999/000245 1998-03-03 1999-02-23 Interacting oscillator and frequency discriminator with a common resonator or time delay unit WO1999048209A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27533/99A AU2753399A (en) 1998-03-03 1999-02-23 Interacting oscillator and frequency discriminator with a common resonator or time delay unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800648A SE513808C2 (en) 1998-03-03 1998-03-03 Interoperable oscillator and frequency discriminator with common resonator or time delay unit
SE9800648-9 1998-03-03

Publications (2)

Publication Number Publication Date
WO1999048209A2 WO1999048209A2 (en) 1999-09-23
WO1999048209A3 true WO1999048209A3 (en) 1999-11-25

Family

ID=20410370

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/000245 WO1999048209A2 (en) 1998-03-03 1999-02-23 Interacting oscillator and frequency discriminator with a common resonator or time delay unit

Country Status (3)

Country Link
AU (1) AU2753399A (en)
SE (1) SE513808C2 (en)
WO (1) WO1999048209A2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044153A1 (en) * 1980-07-14 1982-01-20 John Fluke Mfg. Co., Inc. Controlled frequency signal source apparatus including a feedback path for the reduction of phase noise
DE3040793A1 (en) * 1980-10-30 1982-05-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Frequency stabilising circuit for microwave oscillator - has delay circuit comprising microstrip filter with sub-filters on different substrates
US4553110A (en) * 1980-05-27 1985-11-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration JFET Reflection oscillator
US5032800A (en) * 1990-06-15 1991-07-16 Raytheon Company Tunable oscillator with noise degeneration
US5036299A (en) * 1990-06-22 1991-07-30 California Institute Of Technology Method and apparatus for reducing microwave oscillator output noise
US5204640A (en) * 1992-02-10 1993-04-20 California Institute Of Technology Widely tunable oscillator stabilization using analog fiber optic delay line
US5661439A (en) * 1996-07-11 1997-08-26 Northrop Grumman Corporation Method and apparatus for cancelling phase noise

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553110A (en) * 1980-05-27 1985-11-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration JFET Reflection oscillator
EP0044153A1 (en) * 1980-07-14 1982-01-20 John Fluke Mfg. Co., Inc. Controlled frequency signal source apparatus including a feedback path for the reduction of phase noise
DE3040793A1 (en) * 1980-10-30 1982-05-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Frequency stabilising circuit for microwave oscillator - has delay circuit comprising microstrip filter with sub-filters on different substrates
US5032800A (en) * 1990-06-15 1991-07-16 Raytheon Company Tunable oscillator with noise degeneration
US5036299A (en) * 1990-06-22 1991-07-30 California Institute Of Technology Method and apparatus for reducing microwave oscillator output noise
US5204640A (en) * 1992-02-10 1993-04-20 California Institute Of Technology Widely tunable oscillator stabilization using analog fiber optic delay line
US5661439A (en) * 1996-07-11 1997-08-26 Northrop Grumman Corporation Method and apparatus for cancelling phase noise

Also Published As

Publication number Publication date
AU2753399A (en) 1999-10-11
SE9800648L (en) 1999-09-04
WO1999048209A2 (en) 1999-09-23
SE9800648D0 (en) 1998-03-03
SE513808C2 (en) 2000-11-06

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