DE3604361A1 - Filter for short electromagnetic waves - has resonator inner conductors as copper tube cables, whose inner conductor forms tuner - Google Patents
Filter for short electromagnetic waves - has resonator inner conductors as copper tube cables, whose inner conductor forms tunerInfo
- Publication number
- DE3604361A1 DE3604361A1 DE19863604361 DE3604361A DE3604361A1 DE 3604361 A1 DE3604361 A1 DE 3604361A1 DE 19863604361 DE19863604361 DE 19863604361 DE 3604361 A DE3604361 A DE 3604361A DE 3604361 A1 DE3604361 A1 DE 3604361A1
- Authority
- DE
- Germany
- Prior art keywords
- inner conductor
- filter
- semi
- resonators
- electromagnetic waves
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Die Erfindung betrifft ein Filter für sehr kurze elektro magnetische Wellen gemäß dem Oberbegriff des Patentan spruches.The invention relates to a filter for very short electro magnetic waves according to the preamble of the patent saying.
Filter der vorgenannten Art sind z.B. aus der Zeit schrift "The Radio and Electronic Engineer", July 1967, S. 39-52 und dort aus dem Aufsatz "The Practical Design of Interdigital and Comb-Line Filters" bzw. aus der Zeit schrift "IEEE Transactions on Microwave Theory and Tech nics", Sept. 1965, S. 696 bis 698, und dort aus dem Auf satz "A Simple Design Procedure for Small Percentage Bandwith Round-Rod Interdigital-Filters" bekannt.Filters of the aforementioned type are e.g. out of time "The Radio and Electronic Engineer", July 1967, Pp. 39-52 and from the essay "The Practical Design of Interdigital and Comb-Line Filters "or from time writing "IEEE Transactions on Microwave Theory and Tech nics ", Sept. 1965, pp. 696 to 698, and there from the Auf sentence "A Simple Design Procedure for Small Percentage Bandwith Round-Rod Interdigital Filters "known.
In der Mikrowellentechnik sind Interdigital- und Kammlei tungsfilter bekanntlich Siebschaltungen mit interdigital oder kammartig angeordneten leitungsgekoppelten Resona toren.Interdigital and comb are in microwave technology as is well known, filter circuits with interdigital or comb-like line-coupled Resona goals.
Die Innenleiter der Leitungsanordnung bilden zusammen mit einer äußeren metallischen Hülle ein Lechersystem das in sich die Funktion der Koppelelemente und der Resonanzkrei se vereinigt. Bekannt ist ferner, Mikrowellenfilter aus einem oder mehreren Koaxialleitungs-Resonatoren herzu stellen.The inner conductors of the line arrangement form together with an outer metallic shell a Lechersystem that in the function of the coupling elements and the resonance circuit se united. It is also known to use microwave filters one or more coaxial line resonators put.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein möglichst kostengünstig herstellbares Mikrowellenfilter mit geringem Gewicht und geringem Volumen anzugeben, das zugleich einen unkomplizierten Aufbau hat. The invention is therefore based on the object Microwave filter that can be produced as inexpensively as possible to indicate with light weight and small volume that at the same time has an uncomplicated structure.
Anhand eines Ausführungsbeispiels wird nachstehend die Erfindung noch näher erläutert.Using an exemplary embodiment, the Invention explained in more detail.
Es zeigt in der ZeichnungIt shows in the drawing
Fig. 1 als Beispiel ein Kammleitungsfilter, Fig. 1 as an example of a comb-line filter,
Fig. 2 eine vergrößerte Innenleiterdarstellung von Fig. 1. FIG. 2 shows an enlarged inner conductor representation from FIG. 1.
In Fig. 1 ist ein Kammleitungsfilter mit fünf Resonatoren zu erkennen, dessen Innenleiter mit der Bezugsziffer 1 be zeichnet sind. Diese Innenleiter sind metallisch und be finden sich in einem metallischen Gehäuse 2, an dem selbst auf einer Seite alle metallischen Innenleiter elektrisch leitend verbunden sind, zum Beispiel verlötet sind. In be kannter Weise führen zu den Innenleitern des ersten und des letzten Resonators koaxiale Leitungen 3 und 4, die der Zuführung bzw. der Abnahme der elektrischen Energie dienen. Die Innenleiter dieser koaxialen Leitungen 3 und 4 sind ebenfalls, wie dies in Fig. 1 ohne weiteres zu erkennen ist, mit den metallischen Innenleitern 1 metallisch ver bunden, so daß eine als Anzapfung ausgebildete Ankopplung verwendet ist. In der vergrößerten Darstellung von Fig. 2 ist gut zu erkennen, daß der Innenleiter 1 selbst als so genanntes Semi-Rigid-Kabel ausgebildet ist. Es hat deshalb der Innenleiter 1 einen weiteren metallischen Innenleiter 6, der in bekannter Weise in einem dielektrischen Material 5 geführt ist. Die elektrische Wirkungsweise beruht darauf, daß das Semi-Rigid-Kabel 1, 5, 6 als Blindwiderstand für die einzelnen Resonatoren wirkt, weshalb die metallische Länge des Innenleiters 6 maßgebend für die Resonanzfrequenz ist. In Fig. 2 ist dies ebenfalls gut zu erkennen, insofern nämlich, als der metallische Innenleiter 6 zurückversetzt gezeichnet ist. Der metallische Innenleiter 6 muß nun mit dem Gehäuse 2 elektrisch leitend verbunden werden, was beispielsweise an der Stelle 7 in der Weise geschieht, daß der Innenleiter 6 und das Gehäuse 2 miteinander verlötet werden. Auch andere elektrische Kontakte sind an der Stelle 7 denkbar.In Fig. 1, a comb filter with five resonators can be seen, the inner conductor with the reference numeral 1 be distinguished. These inner conductors are metallic and be found in a metallic housing 2 , on which all metallic inner conductors are electrically conductively connected, for example soldered, on one side. In a known manner lead to the inner conductors of the first and last resonator coaxial lines 3 and 4 , which are used to supply or remove the electrical energy. The inner conductors of these coaxial lines 3 and 4 are also, as can be seen in Fig. 1 without further notice, with the metallic inner conductors 1 metallically connected, so that a coupling designed as a tap is used. In the enlarged representation of FIG. 2 it can be clearly seen that the inner conductor 1 itself is designed as a so-called semi-rigid cable. The inner conductor 1 therefore has a further metallic inner conductor 6 which is guided in a dielectric material 5 in a known manner. The electrical mode of operation is based on the fact that the semi-rigid cable 1 , 5 , 6 acts as a reactance for the individual resonators, which is why the metallic length of the inner conductor 6 is decisive for the resonance frequency. This can also be clearly seen in FIG. 2, to the extent that the metallic inner conductor 6 is shown set back. The metallic inner conductor 6 must now be electrically conductively connected to the housing 2 , which happens, for example, at point 7 in such a way that the inner conductor 6 and the housing 2 are soldered together. Other electrical contacts are also conceivable at point 7 .
Die Erfindung basiert also auf der Verwendung eines Semi- Rigid-Kabels als Innenleiter und Abstimmelement eines Kammleitungs- oder Interdigitalfilters bzw. eines Koaxial resonator-Filters (Fig. 1).The invention is therefore based on the use of a semi-rigid cable as the inner conductor and tuning element of a comb line or interdigital filter or a coaxial resonator filter ( FIG. 1).
Das Gehäuse besteht z.B. aus einem tiefgezogenen Blech kasten, der Deckel aus einem ebenen Blech, die Einzel teile werden z.B. weich gelötet.The housing is e.g. from a deep-drawn sheet box, the lid of a flat sheet, the single parts are e.g. soft soldered.
Den Innenleiter eines Resonators bildet der Außenleiter des Semi-Rigid-Kabels, während der Innenleiter des Semi- Rigid-Kabels als Resonanz-Abstimmelement verwendet wird (Fig. 2). Die Abstimmung erfolgt durch mehr oder weniger weites Herausziehen (Doppelpfeil 8) des Innenleiters des Semi-Rigid-Kabels.The inner conductor of a resonator is the outer conductor of the semi-rigid cable, while the inner conductor of the semi-rigid cable is used as a resonance tuning element ( FIG. 2). The adjustment is made by pulling the inner conductor of the semi-rigid cable out more or less (double arrow 8 ).
Diese Ausführung ist besonders kostengünstig, weil der Resonator-Innenleiter und das Abstimmelement aus handels üblichen Semi-Rigid-Kabeln mit beliebigem Wellenwider stand, vorzugsweise niederohmig, abgeschnitten werden können.This version is particularly inexpensive because of Resonator inner conductor and the tuning element from commercial usual semi-rigid cables with any wave resistance stood, preferably low impedance, are cut off can.
Die Erfindung kann sowohl für Filter mit unversteilerter als auch mit versteilerter Dämpfungscharakteristik und beliebiger Anzahl von Resonatoren verwendet werden.The invention can be used both for filters with undivided as well as with a distributed damping characteristic and any number of resonators can be used.
Die Ankopplung kann induktiv, kapazitiv oder als Anzapfung (Fig. 1) je nach technischer Anforderung ausgeführt wer den. Die Berechnung erfolgt nach den aus der Literatur bekannten Methoden, z.B. aus den eingangs angegebenen Literaturstellen.The coupling can be carried out inductively, capacitively or as a tap ( Fig. 1) depending on the technical requirements. The calculation is carried out according to the methods known from the literature, for example from the literature references specified at the beginning.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863604361 DE3604361A1 (en) | 1986-02-12 | 1986-02-12 | Filter for short electromagnetic waves - has resonator inner conductors as copper tube cables, whose inner conductor forms tuner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863604361 DE3604361A1 (en) | 1986-02-12 | 1986-02-12 | Filter for short electromagnetic waves - has resonator inner conductors as copper tube cables, whose inner conductor forms tuner |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3604361A1 true DE3604361A1 (en) | 1987-08-13 |
Family
ID=6293925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863604361 Withdrawn DE3604361A1 (en) | 1986-02-12 | 1986-02-12 | Filter for short electromagnetic waves - has resonator inner conductors as copper tube cables, whose inner conductor forms tuner |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3604361A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19935666A1 (en) * | 1999-07-29 | 2001-02-15 | Daimler Chrysler Ag | Analog-digital converter for a signal in the gigahertz range, millimeter wave receiver and bandpass filter for millimeter waves |
CN104916888A (en) * | 2015-05-14 | 2015-09-16 | 中国电子科技集团公司第四十一研究所 | High-power filter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519524A (en) * | 1947-08-13 | 1950-08-22 | Hazeltine Research Inc | Multiple-tuned wave-selector system |
DE1221375B (en) * | 1961-06-08 | 1966-07-21 | Robert Bosch Elektronik | Frequency-dependent electrical network for very high frequencies, such as frequency filters, crossovers or the like. |
-
1986
- 1986-02-12 DE DE19863604361 patent/DE3604361A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519524A (en) * | 1947-08-13 | 1950-08-22 | Hazeltine Research Inc | Multiple-tuned wave-selector system |
DE1221375B (en) * | 1961-06-08 | 1966-07-21 | Robert Bosch Elektronik | Frequency-dependent electrical network for very high frequencies, such as frequency filters, crossovers or the like. |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19935666A1 (en) * | 1999-07-29 | 2001-02-15 | Daimler Chrysler Ag | Analog-digital converter for a signal in the gigahertz range, millimeter wave receiver and bandpass filter for millimeter waves |
DE19935666C2 (en) * | 1999-07-29 | 2002-08-29 | Daimler Chrysler Ag | Analog-digital converter for a signal in the gigahertz range, millimeter wave receiver and bandpass filter for millimeter waves |
CN104916888A (en) * | 2015-05-14 | 2015-09-16 | 中国电子科技集团公司第四十一研究所 | High-power filter |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |