DE634027C - Adjustable wave filter with constant absolute bandwidth - Google Patents

Adjustable wave filter with constant absolute bandwidth

Info

Publication number
DE634027C
DE634027C DES99197D DES0099197D DE634027C DE 634027 C DE634027 C DE 634027C DE S99197 D DES99197 D DE S99197D DE S0099197 D DES0099197 D DE S0099197D DE 634027 C DE634027 C DE 634027C
Authority
DE
Germany
Prior art keywords
branches
wave filter
constant absolute
wave
absolute bandwidth
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
Application number
DES99197D
Other languages
German (de)
Inventor
Alfons Arzmaier
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 claimed from DES97556D external-priority patent/DE628944C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES99197D priority Critical patent/DE634027C/en
Application granted granted Critical
Publication of DE634027C publication Critical patent/DE634027C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758Series LC in shunt or branch path
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/0153Electrical filters; Controlling thereof
    • H03H7/0161Bandpass filters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/09Filters comprising mutual inductance
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775Parallel LC in shunt or branch path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/04Control of transmission; Equalising
    • H04B3/14Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/144Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers fixed equalizers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters And Equalizers (AREA)

Description

Verstellbares Wellenfilter mit konstanter absoluter Bandbreite In dem Hauptpatent ist ein elektrisches Wellensieb beschrieben, das derart verstellbar ist, daß bei Verschiebung des Durchlässigkeitsbereiches konstanter absoluter Breite die Größe des Wellenwiderstandes dem Durchlässigkeitsbereich für das ganze überstrichene Frequenzgebiet erhalten bleibt. Nach einer vorteilhaften Ausführungsform besteht das Filter aus zwei Zweigen, die auf einer Seite elektrisch verbunden, auf der anderen Seite an eine Transformatorwicklung angeschlossen sind, dessen Ausgang ein. Klemmenpaar des Filters darstellt, während das andere Klemmenpaar durch den Mittelabgriff der Transformatorwicklung und den gemeinsamen Punkt der beiden Zweige gegeben ist, wobei die beiden Zweige durch mindestens je einen Zweig .eines hintereinandergeschalteten Kondensators und einer Spule gebildet und gleichartige Elemente, vorzugsweise die Kondensatoren, in ihrer Einstellung mechanisch gekoppelt sind.Adjustable wave filter with constant absolute bandwidth In the main patent describes an electric wave screen that is adjustable in this way is that when shifting the permeability range of constant absolute width the size of the wave resistance the permeability range for the entire swept Frequency range is retained. According to an advantageous embodiment, there is the filter consists of two branches that are electrically connected on one side, on the other Side connected to a transformer winding, the output of which is a. Terminal pair of the filter, while the other pair of clamps through the center tap of the Transformer winding and the common point of the two branches is given, where the two branches by at least one branch each, one connected in series Capacitor and a coil formed and similar elements, preferably the Capacitors, are mechanically coupled in their setting.

Da die Elemente des Wellensiebes bei Veränderung der Einstellung über weite Grenzen geändert werden sollen, ergibt sich besonders bei niedrigen Frequenzen die Schwierigkeit, große Impedanzelemente veränderlich zu erhalten. Aber auch für die festen Elemente gelangt man bei der Bemessung häufig zu ungünstigen Werten der Elemente.Since the elements of the wave screen when changing the setting over wide limits are to be changed, particularly at low frequencies the difficulty of keeping large impedance elements variable. But also for the fixed elements often lead to unfavorable values of the Elements.

Die vorliegende Erfindung vermeidet diese Schwierigkeit dadurch, daß ein oder mehrere Impedanzelemente oder Impedanzen des Wellensiebes nach dem Hauptpatent durch Übertrager in den Teilen bzw. Zweigen zweipolig wirksam gemacht sind.The present invention avoids this difficulty in that one or more impedance elements or impedances of the wave screen according to the main patent are made effective bipolar by transformers in the parts or branches.

Durch die Wahl des übersetzungsverhältnisses können die Impedanzelemente selbst (z. B. Spulen oder Kondensatoren oder deren Vereinigung) kleiner ausgeführt werden. Bei sehr hohen Frequenzen kann unter Umständen der umgekehrte Fall Vorteile bringen, nämlich die Impedanzelemente größer zu wählen und durch Transformatorübersetzung in kleineren Werten wirksam zu machen.The impedance elements themselves (e.g. coils or capacitors or their combination) made smaller will. In the case of very high frequencies, the reverse case may have advantages bring, namely to choose the impedance elements larger and through transformer translation to make it effective in smaller values.

In den Figuren sind zwei Ausführungsbeispiele der erfindungsgemäß ausgebildeten Wellensiebe dargestellt.The figures show two exemplary embodiments of the invention trained wave screens shown.

Nach Fig. i besteht das Wellensieb aus einem Ausgleichsübertrager AU, an den verschiedene Zweige auf beiden Seiten angeschlossen sind. Die Zweige bestehen aus Kondensatoren Cl-C4 und Spulen Li-L4, die über Übertrager Us-U4 in den Zweigen wirksam gemacht sind. Von - den Wellensieben nach dem Hauptpatent unterscheidet sich die Anordnung nach Fig. i dadurch, daß nach der früheren Ausführung die Spulen direkt in den Zweigen liegen. Die Kondensatorsind in ihrer Verstellung mechaniell., gekoppelt zu denken.According to Fig. I, the wave screen consists of a compensating transformer AU, to which various branches are connected on both sides. The branches consist of capacitors Cl-C4 and coils Li-L4, which are made effective in the branches via transformers Us-U4. The arrangement according to FIG. 1 differs from the wave screens according to the main patent in that, according to the earlier version, the coils are located directly in the branches. The adjustment of the capacitors is mechanical. Think of it as coupled.

Fig. z zeigt ein Wellensieb, das sich vdi%= dem vorigen dadurch unterscheidet, daß nicht die Spulen, sondern die Kondensatoren transformatorisch angekoppelt sind. Ergibt z. B. die Bemessung der Filter auf Grund des gewünschten Wellenwiderstandes, der Lochbreite und der Steilheit und des vorzüglich gewünschten Frequenzbereiches eine Kapazität für C1 vom Wert von o, i &,F, so würde es Schwierigkeiten machen, diese Kapazität stetig veränderbar in Form eines Drehkondensators zu bauen. Durch die Transformationen ist dies aber nun möglich, da C1 bedeutend kleiner gemacht werden kann.Fig. Z shows a wave sieve which differs vdi% = the previous one in that that not the coils, but the capacitors are coupled in a transformer. Results z. B. the dimensioning of the filter based on the desired wave impedance, the hole width and the steepness and the particularly desired frequency range a capacitance for C1 of the value of o, i &, F, so it would be difficult to to build this capacity continuously changeable in the form of a variable capacitor. By the transformations this is now possible because C1 made significantly smaller can be.

Es ist natürlich aber auch möglich, in einem Zweig sowohl die Spulen als auch die Kondensatoren durch Transformationen in den Zweig zu @ bringen oder aber sämtliche Impedanzen eines Zweiges oder mehrerer paralleler Zweige, wie in Fig. 3 angedeutet, in .der U*, U2 die Übertrager, die die Impe-;@d4nzen Zi bzw. Z2 in den Zweigen wirksam -miachen.It is of course also possible to have both the coils in one branch as well as bringing the capacitors into the branch @ by transformations or but all impedances of a branch or several parallel branches, as in Fig. 3 indicated, in .der U *, U2 the transformers, which the Impe -; @ d4nzen Zi resp. Make Z2 effective in the branches.

Claims (1)

PATRNTANSPRÜcHR: i. Elektrisches Wellensieb nach Patent 628 944, dadurch gekennzeichnet, daß ein oder mehrere Impedanzelemente oder Impedanzen des Wellensiebes durch übertrager in den einzelnen Teilen bzw. Zweigen des Siebes zweipolig wirksam gemacht sind. z. Elektrisches Wellensieb nach Anspruch i, dadurch gekennzeichnet, daß die bei Verstimmung des Wellensiebes veränderlichen Elemente, vorzugsweise die Kondensatoren, in den einzelnen Zweigen des Wellensiebes über Transformatoren angeschlossen sind.PATENT CLAIM: i. Electric wave screen according to patent 628 944, characterized in that one or more impedance elements or impedances of the wave screen are made effective in two poles by transformers in the individual parts or branches of the screen. z. Electric wave screen according to Claim i, characterized in that the elements which can be changed when the wave screen is detuned, preferably the capacitors, are connected in the individual branches of the wave screen via transformers.
DES99197D 1931-03-19 1931-06-14 Adjustable wave filter with constant absolute bandwidth Expired DE634027C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES99197D DE634027C (en) 1931-03-19 1931-06-14 Adjustable wave filter with constant absolute bandwidth

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES97556D DE628944C (en) 1931-03-19 1931-03-19 Adjustable wave filter with constant absolute bandwidth
DES99197D DE634027C (en) 1931-03-19 1931-06-14 Adjustable wave filter with constant absolute bandwidth

Publications (1)

Publication Number Publication Date
DE634027C true DE634027C (en) 1936-08-15

Family

ID=25998117

Family Applications (1)

Application Number Title Priority Date Filing Date
DES99197D Expired DE634027C (en) 1931-03-19 1931-06-14 Adjustable wave filter with constant absolute bandwidth

Country Status (1)

Country Link
DE (1) DE634027C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041367A1 (en) * 2010-09-29 2012-04-05 Siemens Transformers Austria Gmbh & Co Kg Arrangement and method for the compensation of a magnetic unidirectional flux in a transformer core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041367A1 (en) * 2010-09-29 2012-04-05 Siemens Transformers Austria Gmbh & Co Kg Arrangement and method for the compensation of a magnetic unidirectional flux in a transformer core
US9183980B2 (en) 2010-09-29 2015-11-10 Siemens Aktiengesellschaft Arrangement and method for the compensation of a magnetic unidirectional flux in a transformer core

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