FR2336826A1 - Transistor oscillator tunable over wide frequency range - operates in VHF and UHF range and uses feedback impedance between transistor emitter and collector - Google Patents

Transistor oscillator tunable over wide frequency range - operates in VHF and UHF range and uses feedback impedance between transistor emitter and collector

Info

Publication number
FR2336826A1
FR2336826A1 FR7638922A FR7638922A FR2336826A1 FR 2336826 A1 FR2336826 A1 FR 2336826A1 FR 7638922 A FR7638922 A FR 7638922A FR 7638922 A FR7638922 A FR 7638922A FR 2336826 A1 FR2336826 A1 FR 2336826A1
Authority
FR
France
Prior art keywords
transistor
collector
vhf
operates
feedback impedance
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.)
Granted
Application number
FR7638922A
Other languages
French (fr)
Other versions
FR2336826B1 (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.)
Licentia Patent Verwaltungs-GmbH
Original Assignee
Licentia Patent Verwaltungs-GmbH
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 to DE19752558120 priority Critical patent/DE2558120C3/de
Application filed by Licentia Patent Verwaltungs-GmbH filed Critical Licentia Patent Verwaltungs-GmbH
Publication of FR2336826A1 publication Critical patent/FR2336826A1/en
Application granted granted Critical
Publication of FR2336826B1 publication Critical patent/FR2336826B1/fr
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/1256Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a variable inductance
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/1262Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising switched elements
    • H03B5/1268Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising switched elements switched inductors
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B2200/00Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003Circuit elements of oscillators
    • H03B2200/004Circuit elements of oscillators including a variable capacitance, e.g. a varicap, a varactor or a variable capacitance of a diode or transistor
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B2200/00Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003Circuit elements of oscillators
    • H03B2200/0048Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B2200/00Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003Circuit elements of oscillators
    • H03B2200/0056Circuit elements of oscillators including a diode used for switching
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B2201/00Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02Varying the frequency of the oscillations by electronic means
    • H03B2201/0208Varying the frequency of the oscillations by electronic means the means being an element with a variable capacitance, e.g. capacitance diode

Abstract

The feed-back impedance is inserted between the emitter and the collector of a transistor forming part of an oscillator circuit. The feedback impedance consists of a series oscillating circuit with a capacitor (8) and a variable inductance (9) whose resonant frequency is above the highest reception frequency, or in superheterodyne receivers above the local oscillator highest frequency. This circuit one end is directly connected to a transistor electrode 10), and the other to a low voltage tapping of the oscillator circuit (3) inductance (4,5).
FR7638922A 1975-12-23 1976-12-23 Expired FR2336826B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752558120 DE2558120C3 (en) 1975-12-23 1975-12-23

Publications (2)

Publication Number Publication Date
FR2336826A1 true FR2336826A1 (en) 1977-07-22
FR2336826B1 FR2336826B1 (en) 1980-07-18

Family

ID=5965349

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638922A Expired FR2336826B1 (en) 1975-12-23 1976-12-23

Country Status (3)

Country Link
DE (1) DE2558120C3 (en)
FR (1) FR2336826B1 (en)
IT (1) IT1065169B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292077A2 (en) * 1987-05-20 1988-11-23 Philips Patentverwaltung GmbH Low noise converter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246295C2 (en) * 1982-12-14 1986-11-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE4008186C2 (en) * 1990-03-15 1999-09-09 Thomson Brandt Gmbh Circuit arrangement for receiving high-frequency signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551681A (en) * 1967-07-13 1968-12-27
FR2003205A1 (en) * 1968-03-04 1969-11-07 Philips Nv
DE1591764A1 (en) * 1967-12-13 1970-09-10 Telefunken Patent Oscillator circuit with a capacitively tunable parallel resonant circuit
DE2137408A1 (en) * 1970-08-07 1972-02-24 Ducati Elettrotecnica Spa

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551681A (en) * 1967-07-13 1968-12-27
DE1591764A1 (en) * 1967-12-13 1970-09-10 Telefunken Patent Oscillator circuit with a capacitively tunable parallel resonant circuit
FR2003205A1 (en) * 1968-03-04 1969-11-07 Philips Nv
DE2137408A1 (en) * 1970-08-07 1972-02-24 Ducati Elettrotecnica Spa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV575/55 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292077A2 (en) * 1987-05-20 1988-11-23 Philips Patentverwaltung GmbH Low noise converter
EP0292077A3 (en) * 1987-05-20 1990-05-23 Philips Electronics N.V. Low noise converter

Also Published As

Publication number Publication date
FR2336826B1 (en) 1980-07-18
DE2558120B2 (en) 1977-10-20
DE2558120C3 (en) 1981-09-17
DE2558120A1 (en) 1977-06-30
IT1065169B (en) 1985-02-25

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse