SE9604691L - Oscillator - Google Patents

Oscillator

Info

Publication number
SE9604691L
SE9604691L SE9604691A SE9604691A SE9604691L SE 9604691 L SE9604691 L SE 9604691L SE 9604691 A SE9604691 A SE 9604691A SE 9604691 A SE9604691 A SE 9604691A SE 9604691 L SE9604691 L SE 9604691L
Authority
SE
Sweden
Prior art keywords
oscillator
transistors
diodes
circuit
band
Prior art date
Application number
SE9604691A
Other languages
Swedish (sv)
Other versions
SE9604691D0 (en
Inventor
Mats Bladh
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9604691A priority Critical patent/SE9604691L/en
Publication of SE9604691D0 publication Critical patent/SE9604691D0/en
Priority to EP97950553A priority patent/EP0947045A1/en
Priority to AU53526/98A priority patent/AU5352698A/en
Priority to PCT/SE1997/002099 priority patent/WO1998027643A2/en
Publication of SE9604691L publication Critical patent/SE9604691L/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
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
    • 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
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02—Varying the frequency of the oscillations by electronic means
    • H03B2201/025—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements
    • H03B2201/0258—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements the means comprising a diode

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

In a differential oscillator means (535, 553, 521, 523, 549 and 551) are provided for making it possible to band switch the oscillator. This is obtained by means of cross connecting two transistors (501 and 503) and connecting inductors (509 and 511) to the transistors (501 and 503). The oscillator can be band switched by means of shortening a circuit comprising of two diodes (521 and 523). The switching time for the oscillator is very short since the oscillating circuit does not comprise any serially connected capacitors. In addition all frequency bands of the oscillator can be made impedance matched by means of adding an additional pair of varactor diodes (529 and 531).
SE9604691A 1996-12-19 1996-12-19 Oscillator SE9604691L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9604691A SE9604691L (en) 1996-12-19 1996-12-19 Oscillator
EP97950553A EP0947045A1 (en) 1996-12-19 1997-12-15 An oscillator
AU53526/98A AU5352698A (en) 1996-12-19 1997-12-15 An oscillator
PCT/SE1997/002099 WO1998027643A2 (en) 1996-12-19 1997-12-15 An oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9604691A SE9604691L (en) 1996-12-19 1996-12-19 Oscillator

Publications (2)

Publication Number Publication Date
SE9604691D0 SE9604691D0 (en) 1996-12-19
SE9604691L true SE9604691L (en) 1998-06-20

Family

ID=20405057

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604691A SE9604691L (en) 1996-12-19 1996-12-19 Oscillator

Country Status (4)

Country Link
EP (1) EP0947045A1 (en)
AU (1) AU5352698A (en)
SE (1) SE9604691L (en)
WO (1) WO1998027643A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19956428A1 (en) * 1999-11-24 2001-05-31 Thomson Brandt Gmbh Oscillator has tunable oscillation circuit with two coils in series with tuning element and connected together via switch, further coil in series with one coil and coupled to reference potential
US7129801B2 (en) * 2004-02-27 2006-10-31 Qualcomm Incorporated Interpolative varactor voltage controlled oscillator with constant modulation sensitivity
KR20070069191A (en) * 2004-10-05 2007-07-02 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Semiconductor device and use thereof
DE102006023353A1 (en) 2006-05-17 2007-11-22 Atmel Duisburg Gmbh Integrated resonant circuit
ITMI20091685A1 (en) * 2009-09-30 2011-04-01 Siae Microelettronica Spa RESONANT CIRCUIT FOR MICROWAVE OSCILLATORS AND OSCILLATOR EQUIPPED WITH SUCH A RESONANT CIRCUIT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003004A (en) * 1975-04-09 1977-01-11 Nasa Frequency modulated oscillator
US3997796A (en) * 1975-05-14 1976-12-14 Ncr Corporation High speed divide-by-two circuit
US5561398A (en) * 1995-05-16 1996-10-01 National Semiconductor Corporation LC-tuned voltage controlled ring oscillator
US5629652A (en) * 1996-05-09 1997-05-13 Analog Devices Band-switchable, low-noise voltage controlled oscillator (VCO) for use with low-q resonator elements

Also Published As

Publication number Publication date
WO1998027643A3 (en) 1998-08-20
SE9604691D0 (en) 1996-12-19
AU5352698A (en) 1998-07-15
EP0947045A1 (en) 1999-10-06
WO1998027643A2 (en) 1998-06-25

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