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DE1175291B - Capacitive tunable tunnel diode oscillator with optimally adapted load - Google Patents

Capacitive tunable tunnel diode oscillator with optimally adapted load

Info

Publication number
DE1175291B
DE1175291B DET20669A DET0020669A DE1175291B DE 1175291 B DE1175291 B DE 1175291B DE T20669 A DET20669 A DE T20669A DE T0020669 A DET0020669 A DE T0020669A DE 1175291 B DE1175291 B DE 1175291B
Authority
DE
Germany
Prior art keywords
tunnel diode
circuit
load
oscillator
conductance
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.)
Pending
Application number
DET20669A
Other languages
German (de)
Inventor
Dipl-Phys Dr Heinrich Rieck
Dipl-Ing Klaus Bomhardt
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs 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
Application filed by Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Priority to DET20669A priority Critical patent/DE1175291B/en
Priority to GB3199962A priority patent/GB1009541A/en
Publication of DE1175291B publication Critical patent/DE1175291B/en
Pending legal-status Critical Current

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
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/06—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device
    • H03B7/08—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device being a tunnel 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
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/12—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising distributed inductance and capacitance
    • H03B7/14—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising distributed inductance and capacitance active element 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
    • H03B2201/01—Varying the frequency of the oscillations by manual means
    • H03B2201/011—Varying the frequency of the oscillations by manual means the means being an element with a variable capacitance
    • 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
    • H03B2201/01—Varying the frequency of the oscillations by manual means
    • H03B2201/014—Varying the frequency of the oscillations by manual means the means being associated with an element comprising distributed inductances and capacitances

Landscapes

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

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Internat. KL: H 03 b;Boarding school KL: H 03 b;

Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:Number:
File number:
Registration date:
Display day:

H 03 jH 03 j

Deutsche KL: 21 a4 -13German KL: 21 a4 -13

T 20669 IXd/ 21 a4
30. August 1961
6. August 1964T 20669 IXd / 21 a4
August 30, 1961
August 6, 1964

Die Erfindung befaßt sich mit einem durchstimmbaren Tunneldiodenoszillator annähernd konstanter Ausgangsleistung.The invention is concerned with a tunable tunnel diode oscillator that is approximately constant Output power.

In letzter Zeit sind Oszillatoren bekanntgeworden, die als aktives Element eine Tunneldiode enthalten. Diese Oszillatoren sind allgemein für eine feste Frequenz ausgelegt, wobei der Lastleitwert so an die Schaltung angekoppelt ist, daß der Oszillator seine größtmögliche Leistung an den Lastleitwert abgibt. Recently, oscillators have become known which contain a tunnel diode as an active element. These oscillators are generally designed for a fixed frequency, with the load conductance at this the circuit is coupled so that the oscillator delivers its greatest possible power to the load conductance.

Tunneldiodenoszillatoren bestehen im allgemeinen aus einem Parallelresonanzkreis, zu dem die Tunneldiode und der Lastleitwert parallel geschaltet sind. Ist die Tunneldiode so vorgespannt, daß ihr Arbeitspunkt im Bereich der fallenden Kennlinie liegt, kommt es zur Selbsterregung.Tunnel diode oscillators generally consist of a parallel resonance circuit to which the tunnel diode and the load conductance are connected in parallel. If the tunnel diode is biased so that its operating point is in the range of the falling characteristic, there is self-excitement.

Es gibt grundsätzlich drei Möglichkeiten, einen solchen Tunneldiodenoszillator durchzustimmen:There are basically three ways to tune such a tunnel diode oscillator:

Die Durchstimmung kann erfolgen:The voting can take place:

1. Durch Variation der Kreiskapazität.1. By varying the circuit capacity.

2. Durch Variation der Kreisinduktivität.2. By varying the circuit inductance.

3. Durch gleichzeitige Variation der Kreiskapazität und der Kreisinduktivität.3. By varying the circuit capacitance and the circuit inductance at the same time.

Die erste Art der Abstimmung durch Variation der Kreiskapazität bietet gegenüber den beiden anderen den Vorteil, daß der Frequenzgleichlauf mit anderen Kreisen in einfacher Weise gelöst werden kann, so daß sie insbesondere bei Fernsehtunern angewendet wird.The first type of tuning by varying the circuit capacity offers compared to the two others have the advantage that the frequency synchronization with other circuits can be solved in a simple manner can, so that it is used in particular in television tuners.

Diese Art der Durchstimmung hat jedoch den Nachteil, daß der Resonanzwiderstand des Kreises mit abnehmender Frequenz kleiner wird. Das bedeutet, daß die Spannung am Lastleitwert und damit die abgegebene Leistung bei einer für die tiefste Frequenz optimal eingestellten und frequenzunabhängigen Lastankopplung mit steigender Frequenz abnimmt.However, this type of tuning has the disadvantage that the resonance resistance of the circuit becomes smaller with decreasing frequency. This means that the voltage at the load conductance and thus the output power at an optimally set and frequency-independent for the lowest frequency Load coupling decreases with increasing frequency.

Der Grund für diese Abnahme der Ausgangsspannung mit steigender Frequenz liegt darin, daß die gesamte Belastung des Oszillators, bestehend aus dem Verlustleitwert des Kreises und dem auf den Kreis transformierten Lastleitwert, mit steigender Frequenz abnimmt.The reason for this decrease in output voltage with increasing frequency is that the total load on the oscillator, consisting of the loss conductance of the circuit and the on the circuit transformed load conductance, decreases with increasing frequency.

Es sind bereits Oszillatorschaltungen bekanntgeworden (deutsche Patentschrift 445 044), bei welchen bei der Abstimmung gleichzeitig die Kopplung so geändert wird, daß optimale Anpassungsbedingungen vorherrschen. There are already known oscillator circuits (German Patent 445 044), in which when tuning, the coupling is changed at the same time so that optimal matching conditions prevail.

Ferner ist es bekannt, bei einer Verstärkerschaltung mit abgestimmten Kopplungskreisen die Güte der Abstimmkreise entweder mittels im Par-Kapazitiv abstimmbarer Tunneldiodenoszillator
mit optimal angepaßter LastIt is also known, in the case of an amplifier circuit with matched coupling circuits, to improve the quality of the tuning circuits either by means of a tunnel diode oscillator that can be tuned in par capacitance
with optimally adapted load

Anmelder:
TelefunkenApplicant:
Telefunken

Patentverwertungsgesellschaft m. b. H.,
Ulm/Donau, Elisabethenstr. 3Patentverwertungsgesellschaft mb H.,
Ulm / Danube, Elisabethenstr. 3

Als Erfinder benannt:
Dipl.-Phys. Dr. Heinrich Rieck,
Dipl.-Ing. Klaus Bomhardt, Ulm/DonauNamed as inventor:
Dipl.-Phys. Dr. Heinrich Rieck,
Dipl.-Ing. Klaus Bomhardt, Ulm / Danube

allelzweig oder mittels in Reihe zu den Schwingkreiselementen liegender frequenzabhängiger Dämpfungsglieder über den ganzen Abstimmbereich konstant zu halten.allele branch or by means of frequency-dependent attenuators in series with the oscillating circuit elements to be kept constant over the entire tuning range.

Die Erfindung geht aus von einem kapazitiv abstimmbaren Tunneldiodenoszillator mit optimal angepaßter Last, bei dem der Lastleitwert kapazitiv an den Resonanzkreis des Oszillators angekoppelt ist. Damit die unerwünschte Abnahme des Leitwertes des Oszillatorkreises mit steigender Durchstimmfrequenz vermieden wird, wird erfindungsgemäß vorgeschlagen, daß das nicht abstimmbar ausgebildete Koppelelement derart bemessen ist, daß durch eine entsprechende Zunahme des auf den Resonanzkreis transformierten Lastleitwertes die Kompensation erreicht wird.The invention is based on a capacitively tunable tunnel diode oscillator with optimal adapted load, in which the load conductance is capacitively coupled to the resonance circuit of the oscillator is. Thus the undesirable decrease in the conductance of the oscillator circuit with increasing tuning frequency is avoided, it is proposed according to the invention that the non-tunable coupling element is dimensioned such that by a corresponding increase in the load conductance transformed to the resonance circuit Compensation is achieved.

Der Erfindungsgedanke soll an Hand eines Ausführungsbeispiels in der Zeichnung näher erläutert werden. Als Resonanzkreis dient eine koaxiale A/4-Leitung, die durch die Kapazität CA abgestimmt wird. Die Tunneldiode TD ist galvanisch an den Innenleiter des Topfkreises teilangekoppelt, ihre Gleichspannungsversorgung erfolgt über den Innenleiter des Topf kreises, der durch die Kapazität CK t gleichspannungsmäßig vom Topfkreisgehäuse getrennt ist. Die Kapazität CKl stellt für die Resonanzfrequenz des Kreises einen Kurzschluß dar. DieThe idea of the invention will be explained in more detail using an exemplary embodiment in the drawing. A coaxial A / 4 line, which is tuned by the capacitance C A, serves as the resonance circuit. The tunnel diode TD is galvanically coupled to the inner conductor of the pot circle, its DC voltage supply takes place via the inner conductor of the pot circle, which is separated from the pot circle housing in terms of direct voltage by the capacitance C K t . The capacitance C Kl represents a short circuit for the resonance frequency of the circuit

äußere Kapazität CKi hat die Aufgabe, niederfrequente Schwingungen des Batteriekreises zu vermeiden. External capacitance C Ki has the task of avoiding low-frequency oscillations in the battery circuit.

Gemäß der Erfindung ist der Lastleitwert GL über die Kapazität CL mit dem Innenleiter des Topfkreises verbunden, und zwar liegt hier ebenfalls eine Teilankopplung vor. Die ausgleichende Wirkung der Ankopplung des Lastleitwertes GL über den Konden-According to the invention, the load conductance value G L is connected to the inner conductor of the cup circle via the capacitance C L , and there is also a partial coupling here. The balancing effect of the coupling of the load conductance G L via the condenser

409 639/269409 639/269

sator CL beruht darauf, daß der Leitwert der Reihenschaltung CL-GL mit steigender Frequenz zunimmt, während der Leitwert des A/4-Kreises mit steigender Frequenz abnimmt.Sator C L is based on the fact that the conductance of the series circuit C L -G L increases with increasing frequency, while the conductance of the A / 4 circuit decreases with increasing frequency.

Claims (1)

Patentanspruch:Claim: Kapazitiv abstimmbarer Tunneldiodenoszillator mit optimal angepaßter Last, bei dem der Lastleitwert kapazitiv an den Resonanzkreis des Oszillators angekoppelt ist, dadurch ge-io kennzeichnet, daß das nicht abstimmbar ausgebildete Koppelelement derart bemessen ist, daß die Abnahme des Leitwertes des Oszillatorkreises mit steigender Frequenz durch eine entsprechende Zunahme des auf den Resonanzkreis transformierten Lastleitwertes ausgeglichen wird.Capacitive tunable tunnel diode oscillator with optimally adapted load, at which the load conductance is capacitively coupled to the resonance circuit of the oscillator, thereby ge-io indicates that the non-tunable coupling element is dimensioned in such a way that that the decrease in the conductance of the oscillator circuit with increasing frequency by a corresponding Increase in the load conductance transformed to the resonance circuit is compensated. In Betracht gezogene Druckschriften:
Deutsche Patentschriften Nr. 445 044, 523 193,
708.Considered publications:
German patents No. 445 044, 523 193,
708 Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DET20669A 1961-08-30 1961-08-30 Capacitive tunable tunnel diode oscillator with optimally adapted load Pending DE1175291B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DET20669A DE1175291B (en) 1961-08-30 1961-08-30 Capacitive tunable tunnel diode oscillator with optimally adapted load
GB3199962A GB1009541A (en) 1961-08-30 1962-08-21 Improvements in or relating to tunnel diode oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET20669A DE1175291B (en) 1961-08-30 1961-08-30 Capacitive tunable tunnel diode oscillator with optimally adapted load

Publications (1)

Publication Number Publication Date
DE1175291B true DE1175291B (en) 1964-08-06

Family

ID=7549801

Family Applications (1)

Application Number Title Priority Date Filing Date
DET20669A Pending DE1175291B (en) 1961-08-30 1961-08-30 Capacitive tunable tunnel diode oscillator with optimally adapted load

Country Status (2)

Country Link
DE (1) DE1175291B (en)
GB (1) GB1009541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114270701A (en) * 2019-08-23 2022-04-01 佳能株式会社 Component and method for manufacturing a component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE445044C (en) * 1927-06-10 Lorenz Akt Ges C Arrangement for high frequency consumer circuits
DE523193C (en) * 1925-07-24 1931-04-20 Hazeltine Corp Electrical coupling system for the anode circuit of a three-electrode discharge tube
DE554708C (en) * 1929-10-03 1932-07-19 Rca Corp Amplifier circuit with matched coupling circuits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE445044C (en) * 1927-06-10 Lorenz Akt Ges C Arrangement for high frequency consumer circuits
DE523193C (en) * 1925-07-24 1931-04-20 Hazeltine Corp Electrical coupling system for the anode circuit of a three-electrode discharge tube
DE554708C (en) * 1929-10-03 1932-07-19 Rca Corp Amplifier circuit with matched coupling circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114270701A (en) * 2019-08-23 2022-04-01 佳能株式会社 Component and method for manufacturing a component

Also Published As

Publication number Publication date
GB1009541A (en) 1965-11-10

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