DE814474C - Circuit arrangement for frequency multiplication - Google Patents
Circuit arrangement for frequency multiplicationInfo
- Publication number
- DE814474C DE814474C DEP11659A DEP0011659A DE814474C DE 814474 C DE814474 C DE 814474C DE P11659 A DEP11659 A DE P11659A DE P0011659 A DEP0011659 A DE P0011659A DE 814474 C DE814474 C DE 814474C
- Authority
- DE
- Germany
- Prior art keywords
- grid
- circuit
- oscillation
- circuit arrangement
- fundamental
- 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.)
- Expired
Links
- 230000010355 oscillation Effects 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
- H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
-
- 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
- H03B5/34—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 vacuum tube
Description
Die vorliegende Erfindung beschäftigt sich mit der Aufgabe der Frequenzvervielfachung. Diese Aufgabe kann beispielsweise entstehen, wenn der Schwingungskreis des Schwingungserzeugers ein piezoelektrisches Frequenznormal enthält und die Betriebsfrequenz eine Schwingungszahl besitzen soll, welche eine nur durch einen kostspieligen Bearbeitungsvorgang erzielbare Dicke des Schwingkristalls erfordert. Man, kann, dann einen solchen Arbeitsaufwand vermeiden, wenn man Schwingkristalle einer durch einfachere Bearbeitung erzielbaren Dicke benutzt und eine durch ein solches Frequenznormal bestimmte Schwingung niedrigerer Frequenz als Grundschwingung des Schwingungserzeugers wählt und durch ihre Vervielfachung die gewünschte Betriebsfrequenz erzeugt. Selbstverständlich können auch andere Gründe eine Frequenzvervielfachung notwendig machen. Eine solche Vervielfachung kann nun erfindungsgemäß dadurch erzielt werden, daß in einer mehrere Elektrodensysteme enthaltenden Elektronenröhre eine durch Aussiebung mittels entsprechend abgestimmtem Anodenkreis eines dieser Systeme entstandene Vielfachschwingung einer beispielsweise zwischen Gitter und Schirmgitter dieses Systems erzeugten Grundschwingung entnommen und nach Phasendrehung um 18o° einem weiteren Gitter des genannten Systems zur rückkopplungsartigen Verstärkung der Oberschwingung sowie außerdem dem Gitter eines weiteren Elektrodensystems zur Steuerung des zugehörigen, auf ein weiteres Vielfaches abgestimmten Anodenkreises zugeführt wird, um letzterem die höchste Vielfachschwingung zu entnehmen. Zur Erläuterung der Erfindung ist als Ausführungsbeispiel ein Schwingungserzeuger mit einem Hexoden- und Triodensystem HCH i l gewählt. Zwischen dem Gitter g1 und dem Schirmgitter 9, + 4 ist eine Grundschwingung gemäß den in dem gezeigten Kästchen K enthaltenen Abstimmelementen mit einem piezoelektrischen. Frequenznormal, z. B. 14 MHz, vorhanden. Durch entsprechende Abstimmung des Kreises K1 kann dem Anodenkreis an AH des Hexodensystems ein Vielfaches, z. B. Dreifaches der Grundschwingung, z. B. 42 MHz, entnommen werden. Diese Vielfachschwingung wird durch induktive Übertragung (Phasendrehung um i8o°) auf den Kreis K2 dem Gitter gT, des Triodensystems und dem mit diesem verbundenen, zwischen den Schirmgittern g2 + 4 liegenden Gitter 93 zugeführt. Mittels des letzteren erfolgt eine Verstärkung der Dreifachschwingung infolge Mitkopplung, während durch das erstgenannte Gitter gTr das Triodensystem mit der verstärkten Dreifachschwingung gesteuert wird, dessen Anodenkreis an AT, bei entsprechender Abstimmung des Kreises K3 ein Vielfaches, z. B. Sechsfaches, der Grundschwingung entnommen werden kann. Der Ausgang des Schwingungserzeugers liefert demnach eine Frequenz von beispielsweise 84 MHz. Das Frequenznortnal besitzt hierbei eine Dicke, die der Grundschwingung, also z. B. 14 MHz, entspricht.The present invention is concerned with the problem of frequency multiplication. This task can arise, for example, when the oscillation circuit of the oscillation generator contains a piezoelectric frequency standard and the operating frequency should have a frequency which requires a thickness of the oscillating crystal that can only be achieved through an expensive machining process. Such a workload can then be avoided by using oscillating crystals of a thickness that can be achieved through simpler machining and choosing a lower frequency oscillation determined by such a frequency standard as the fundamental oscillation of the oscillator and generating the desired operating frequency by multiplying it. Of course, other reasons can also make it necessary to multiply the frequency. Such a multiplication can now be achieved according to the invention in that, in an electron tube containing several electrode systems, a multiple oscillation, produced by screening by means of an appropriately matched anode circle, of one of these systems, of a fundamental oscillation generated, for example, between the grid and screen grid of this system, is removed and, after a phase rotation of 180 °, a further grid of the mentioned system for feedback-like amplification of the harmonics and also the grid of a further electrode system for controlling the associated anode circuit, tuned to a further multiple, in order to extract the highest multiple oscillation from the latter. To explain the invention, a vibration generator with a hexode and triode system HCH il is selected as an exemplary embodiment. Between the grating g1 and the screen grating 9, + 4, there is a fundamental oscillation according to the tuning elements contained in the box K shown with a piezoelectric. Frequency standard, e.g. B. 14 MHz, available. By appropriate coordination of the circle K1, the anode circle at AH of the hexode system can be a multiple, z. B. triple the fundamental, e.g. B. 42 MHz, can be taken. This multiple oscillation is fed to the grid gT, of the triode system and the grid 93 connected to it and located between the screen grids g2 + 4, by inductive transmission (phase rotation by 180 °) on the circle K2. By means of the latter, the triple oscillation is amplified as a result of positive feedback, while the triode system with the amplified triple oscillation is controlled by the former grid gTr. B. Sixfold, the fundamental oscillation can be taken. The output of the oscillation generator therefore delivers a frequency of 84 MHz, for example. The Frequencynortnal here has a thickness that corresponds to the fundamental oscillation, so z. B. 14 MHz.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP11659A DE814474C (en) | 1948-10-02 | 1948-10-02 | Circuit arrangement for frequency multiplication |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP11659A DE814474C (en) | 1948-10-02 | 1948-10-02 | Circuit arrangement for frequency multiplication |
Publications (1)
Publication Number | Publication Date |
---|---|
DE814474C true DE814474C (en) | 1951-09-24 |
Family
ID=7363612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP11659A Expired DE814474C (en) | 1948-10-02 | 1948-10-02 | Circuit arrangement for frequency multiplication |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE814474C (en) |
-
1948
- 1948-10-02 DE DEP11659A patent/DE814474C/en not_active Expired
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