EP1361625B1 - Blocking device for surface waves - Google Patents

Blocking device for surface waves Download PDF

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Publication number
EP1361625B1
EP1361625B1 EP03009089A EP03009089A EP1361625B1 EP 1361625 B1 EP1361625 B1 EP 1361625B1 EP 03009089 A EP03009089 A EP 03009089A EP 03009089 A EP03009089 A EP 03009089A EP 1361625 B1 EP1361625 B1 EP 1361625B1
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EP
European Patent Office
Prior art keywords
standing wave
printed circuit
antenna
wave trap
conductor
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 - Lifetime
Application number
EP03009089A
Other languages
German (de)
French (fr)
Other versions
EP1361625A3 (en
EP1361625A2 (en
Inventor
Wolfgang Wendel
Peter-Sebastian Schramm
Sandhya Schmid
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.)
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics GmbH
Original Assignee
Hirschmann Electronics GmbH and Co KG
Hirschmann Electronics 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 Hirschmann Electronics GmbH and Co KG, Hirschmann Electronics GmbH filed Critical Hirschmann Electronics GmbH and Co KG
Publication of EP1361625A2 publication Critical patent/EP1361625A2/en
Publication of EP1361625A3 publication Critical patent/EP1361625A3/en
Application granted granted Critical
Publication of EP1361625B1 publication Critical patent/EP1361625B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Definitions

  • the invention relates to a device which is designed as a standing wave barrier, according to the features of the preamble of claim 1.
  • sheath waves occur, for example Mismatches of the receiving antenna or by mechanical Asymmetries, which degrades signal reception.
  • a standing wave barrier is known, these Sheath wave barrier is connected between an antenna and a receiver, and electronic components comprising at least one capacitor and comprise a coil which form a parallel circuit, wherein the standing wave barrier as a printed circuit with the electronic components on a printed circuit board is trained.
  • the invention is therefore based on the object as a sheath wave barrier To provide a trained device that is easy to manufacture, the same time is compact and effective on the emergence of high frequency performance the outer conductor of an antenna line suppressed.
  • the standing wave barrier as printed Circuit is formed with the electronic components on a circuit board.
  • the use of a printed circuit board reduces the installation space of the device such that only a flat structure required for the standing wave block and is possible.
  • the advantage of the simple construction is that the electronic components, such as capacitor or coil, by simply printing or etching the electrically conductive coating of the printed circuit board can.
  • the electronic components such as capacitor or coil
  • cables or connectors can be used directly on the printed circuit can be arranged.
  • solder pads on the circuit board still discrete components which can not be made by printing or etching. in this connection it is, without limitation, in particular Ferrites, with which a particularly wide-walled standing wave barrier can be realized leaves.
  • the electronic components such as coils and capacitors are as Parallel circuit arranged on the printed circuit to high frequencies on the Outer conductor of the antenna line to suppress.
  • the figure shows as an embodiment to which the invention, however, not is limited, designed as a standing wave barrier device.
  • This up a printed circuit arranged device consists of a not conductive carrier layer, for example consisting of epoxy resin.
  • On this Carrier layer is either an electrically conductive surface throughout (e.g. Copper), wherein the structure shown in the figure by etching away the Interspaces between the individual tracks is generated.
  • the printed conductors shown in the figure in their corresponding Shaping also by electrically conductive material on the carrier layer be printed.
  • an electronic component capacitors consisting of two at least partially parallel conductor tracks 1 exist.
  • the length or the width the conductor tracks 1 depends on the capacitance of the capacitor to be formed, which in turn depends on the frequency range in which the device should be operated.
  • To form a parallel circuit are still at least one Coil, but in particular also several coils required, made of meandering, in particular rectangular running tracks 2 formed are.
  • These interconnects 1 and 2 are connected via interconnects 3 with at least one further conductor track 4, which is designed as a coplanar line ground is connected. At least partially runs approximately parallel to the coplanar conduction mass an inner conductor, the printed circuit as 5 also on the printed Circuit is applied.
  • the standing wave barrier initially consists of a simple stage Capacitor and coil forming the parallel circuit.
  • the standing wave barrier is a two-stage Sheath wave blocking shown, due to the to the conductor 5 mirror-symmetrical structure of the standing wave barrier per stage two in each case Capacitors whose values are added and two coils (inductors), whose Values are halved, are present.
  • Capacitors whose values are added and two coils (inductors), whose Values are halved, are present.

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Filters And Equalizers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Confectionery (AREA)
  • Catching Or Destruction (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A sheath wave stop filter has a shunt printed circuit with parallel line capacitor (1), inductor coil (2) and solder pads (6) in mirror image about an inner conductor (5) with coplanar line earth (4).

Description

Die Erfindung betrifft eine Vorrichtung, die als Mantelwellensperre ausgebildet ist, gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a device which is designed as a standing wave barrier, according to the features of the preamble of claim 1.

In der Hochfrequenztechnik entstehen Mantelwellen beispielsweise durch Fehlanpassungen der Empfangsantenne oder auch durch mechanische Asymmetrien, wodurch der Signalempfang verschlechtert wird.In high-frequency engineering, sheath waves occur, for example Mismatches of the receiving antenna or by mechanical Asymmetries, which degrades signal reception.

Um der Entstehung von Mantelwellen vorzubeugen, ist es bekannt, einen Parallelkreis aus diskreten Bauelementen wie Kondensatoren und Spulen aufzubauen. Dadurch werden Hochfrequenzleistungen auf dem Außenleiter einer Antennenleitung oder sonstigen Hochfrequenzleitungen unterdrückt, so daß es nicht zu Beeinträchtigungen des Signalempfanges kommt. Solche aus diskreten Bauelementen aufgebaute Vorrichtungen als Mantelwellensperren haben jedoch den Nachteil, daß sie hinsichtlich der Herstellung aufwendig und damit kostenintensiv sind. Zum anderen benötigen sie entsprechenden Bauraum, der je nach Design z.B. der Antenne nicht zur Verfügung steht.In order to prevent the formation of mantle waves, it is known that a Parallel circuit of discrete components such as capacitors and coils build. As a result, high-frequency power on the outer conductor of a Suppressed antenna line or other high-frequency lines, so that it is not to interference with the signal reception comes. Such from discrete However, devices constructed as sheath wave barriers have the Disadvantage that they costly in terms of production and thus costly are. On the other hand, they require appropriate space, depending on the design, e.g. the antenna is not available.

Aus der US-A 5,376,858 ist eine Mantelwellensperre bekannt, wobei diese Mantelwellensperre zwischen einer Antenne und einem Empfänger geschaltet ist, und elektronische Bauelemente aufweist, die zumindest einen Kondensator und eine Spule umfassen, die einen Parallelkreis bilden, wobei die Mantelwellensperre als gedruckte Schaltung mit den elektronischen Bauteilen auf einer Leiterplatte ausgebildet ist.From US-A 5,376,858 a standing wave barrier is known, these Sheath wave barrier is connected between an antenna and a receiver, and electronic components comprising at least one capacitor and comprise a coil which form a parallel circuit, wherein the standing wave barrier as a printed circuit with the electronic components on a printed circuit board is trained.

Aus der US-A 4,381,566 ist ein Balloon bekannt, der als Mantelwellensperre dient, da sich bei Verwendung eines Balloons keine Mantelwellen ausbilden.From US-A 4,381,566 a balloon is known which serves as a standing wave barrier, because there are no sheath waves when using a balloon.

Der Erfindung liegt daher die Aufgabe zugrunde, eine als Mantelwellensperre ausgebildete Vorrichtung bereitzustellen, die einfach herzustellen ist, die gleichzeitig kompakt aufgebaut ist und wirksam die Entstehung von Hochfrequenzleistungen auf dem Außenleiter einer Antennenleitung unterdrückt.The invention is therefore based on the object as a sheath wave barrier To provide a trained device that is easy to manufacture, the same time is compact and effective on the emergence of high frequency performance the outer conductor of an antenna line suppressed.

Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst.This object is solved by the features of claim 1.

Erfindungsgemäß ist vorgesehen, daß die Mantelwellensperre als gedruckte Schaltung mit den elektronischen Bauteilen auf einer Leiterplatte ausgebildet ist. According to the invention it is provided that the standing wave barrier as printed Circuit is formed with the electronic components on a circuit board.

Durch die Verwendung einer Leiterplatte verringert sich der Bauraum der Vorrichtung derart, daß nur noch ein flaches Gebilde für die Mantelwellensperre erforderlich und möglich ist. Gleichzeitig besteht der Vorteil des einfachen Aufbaus darin, daß die elektronischen Bauteile, wie Kondensator order Spule, durch einfaches Drucken oder Ätzen der elektrisch leitenden Beschichtung der Leiterplatte hergestellt werden können. Gleichzeitig können durch Drucken bzw. Ätzen auch die entsprechenden Masseflächen realisiert werden. Nach dem Herstellen der elektronischen Bauteile auf der Leiterplatte können Leitungen oder Steckverbindungen direkt mit auf der gedruckten Schaltung angeordnet werden. Außerdem besteht die Möglichkeit, durch das Vorsehen von Lötpunkten auf der Leiterplatte trotzdem noch diskrete Bauteile anzubringen, die nicht durch Drucken oder Ätzen hergestellt werden können. Hierbei handelt es sich, ohne daß dies eine Einschränkung darstellt, insbesondere um Ferrite, mit denen sich eine besonders breitwandige Mantelwellensperre realisieren läßt. Die elektronischen Bauteile wie Spulen und Kondensatoren sind als Parallelkreis auf der gedruckten Schaltung angeordnet, um Hochfrequenzen auf dem Außenleiter der Antennenleitung zu unterdrücken.The use of a printed circuit board reduces the installation space of the device such that only a flat structure required for the standing wave block and is possible. At the same time, the advantage of the simple construction is that the electronic components, such as capacitor or coil, by simply printing or etching the electrically conductive coating of the printed circuit board can. At the same time by printing or etching and the corresponding Ground planes are realized. After making the electronic components On the circuit board, cables or connectors can be used directly on the printed circuit can be arranged. There is also the possibility through the provision of solder pads on the circuit board still discrete components which can not be made by printing or etching. in this connection it is, without limitation, in particular Ferrites, with which a particularly wide-walled standing wave barrier can be realized leaves. The electronic components such as coils and capacitors are as Parallel circuit arranged on the printed circuit to high frequencies on the Outer conductor of the antenna line to suppress.

Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben, aus denen sich entsprechende Vorteile ergeben, die zum Teil im Zusammenhang mit der Figurenbeschreibung erwähnt sind.Further embodiments of the invention are specified in the subclaims, from which there are corresponding benefits, partly in connection with mentioned in the description of the figures.

Die Figur zeigt als ein Ausführungsbeispiel, auf das die Erfindung jedoch nicht beschränkt ist, eine als Mantelwellensperre ausgebildete Vorrichtung. Diese auf einer gedruckten Schaltung angeordnete Vorrichtung besteht aus einer nicht leitenden Trägerschicht, beispielsweise bestehend aus Epoxidharz. Auf dieser Trägerschicht ist entweder durchgehend eine elektrisch leitende Fläche (z.B. auf Kupfer) aufgebracht, wobei die in der Figur gezeigte Struktur durch Wegätzen der Zwischenräume zwischen den einzelnen Leiterbahnen erzeugt wird. Alternativ dazu können die in der Figur gezeigten Leiterbahnen in ihrer entsprechenden Formgebung auch durch elektrisch leitendes Material auf der Trägerschicht aufgedruckt werden.The figure shows as an embodiment to which the invention, however, not is limited, designed as a standing wave barrier device. This up a printed circuit arranged device consists of a not conductive carrier layer, for example consisting of epoxy resin. On this Carrier layer is either an electrically conductive surface throughout (e.g. Copper), wherein the structure shown in the figure by etching away the Interspaces between the individual tracks is generated. Alternatively can the printed conductors shown in the figure in their corresponding Shaping also by electrically conductive material on the carrier layer be printed.

Als elektronisches Bauteil sind Kondensatoren vorhanden, die aus zwei zumindest teilweise parallel verlaufenden Leiterbahnen 1 bestehen. Die Länge bzw. die Breite der Leiterbahnen 1 richtet sich nach der zu bildenden Kapazität des Kondensators, die wiederum abhängig ist von dem Frequenzbereich, in dem die Vorrichtung betrieben werden soll. Zur Bildung eines Parallelkreises sind noch zumindest eine Spule, jedoch insbesondere auch mehrere Spulen erforderlich, die aus mäandernden, insbesondere rechteckförmig verlaufenden Leiterbahnen 2 gebildet sind. Diese Leiterbahnen 1 und 2 sind über Verbindungsleiterbahnen 3 mit zumindest einer weiteren Leiterbahn 4, die als Koplanar-Leitungsmasse ausgebildet ist, verbunden. Zumindest teilweise verläuft etwa parallel zu der Koplanar-Leitungsmasse ein Innenleiter, der als Leiterbahn 5 ebenfalls auf der gedruckten Schaltung aufgebracht ist. Die Enden der Leiterbahnen 4 (Koplanar-Leitungsmasse) und 5 (Innenleiter) werden mit einer Antennenleitung oder einer Steckverbindung versehen, die die als Mantelwellensperre ausgebildete und in der Figur gezeigte Vorrichtung einerseits mit einer Antenne und andererseits mit einem Gerät, insbesondere einem Endgerät (Receiver, Fernsehgerät), verbinden, das die von der Antenne gelieferten Signale verarbeitet. Weiterhin können an entsprechender Stelle Lötpunkte 6 vorhanden sein, über die die gewünschten Leiterbahnen mit Drahtbrücken verbunden werden oder an denen weitere Bauteile, wie beispielsweise Ferrite oder Ferritkerne, eingesetzt und verlötet werden können. Zwecks Abschirmung kann um die bisher genannten Leiterbahnen herum eine mit der Bezugsziffer 7 bezeichnete Antennenmasse angeordnet werden. Vor allen Dingen ist die Mantelwellensperre platzsparend in der Antennenmasse integriert.As an electronic component capacitors are present, consisting of two at least partially parallel conductor tracks 1 exist. The length or the width the conductor tracks 1 depends on the capacitance of the capacitor to be formed, which in turn depends on the frequency range in which the device should be operated. To form a parallel circuit are still at least one Coil, but in particular also several coils required, made of meandering, in particular rectangular running tracks 2 formed are. These interconnects 1 and 2 are connected via interconnects 3 with at least one further conductor track 4, which is designed as a coplanar line ground is connected. At least partially runs approximately parallel to the coplanar conduction mass an inner conductor, the printed circuit as 5 also on the printed Circuit is applied. The ends of the tracks 4 (coplanar line ground) and 5 (inner conductor) with an antenna cable or a plug connection provided, which designed as a standing wave barrier and shown in the figure Device on the one hand with an antenna and on the other hand with a device, In particular, a terminal (receiver, TV), connect, the of the Antenna supplied signals processed. Furthermore, at the appropriate place Lötpunkte 6 be present over the desired tracks with Wire bridges are connected or where other components, such as Ferrite or ferrite cores, can be used and soldered. For the purpose of Shielding can around the previously mentioned tracks around with the Reference numeral 7 are arranged antenna ground. Above all else is the standing wave barrier integrated in the antenna mass to save space.

Die Mantelwellensperre besteht zunächst aus einer einfachen Stufe aus Kondensator und Spule, die den Parallelkreis bilden. In der Figur ist eine zweistufige Mantelwellensperre gezeigt, wobei aufgrund des zu der Leiterbahn 5 spiegelsymmetrischen Aufbaus der Mantelwellensperre pro Stufe jeweils zwei Kondensatoren, deren Werte addiert werden, und zwei Spulen (Induktivitäten), deren Werte halbiert werden, vorhanden sind. Dies bedeutet allgemein, daß jede einzelne Stufe mit weiteren Stufen beliebig kaskadiert werden kann, um so eine Mehrstufigkeit zwecks Erzielung einer beliebig hohen Bandbreite zu erzielen.The standing wave barrier initially consists of a simple stage Capacitor and coil forming the parallel circuit. In the figure is a two-stage Sheath wave blocking shown, due to the to the conductor 5 mirror-symmetrical structure of the standing wave barrier per stage two in each case Capacitors whose values are added and two coils (inductors), whose Values are halved, are present. This generally means that every single one Step can be cascaded with other levels as desired, so one To achieve multi-stage in order to achieve an arbitrarily high bandwidth.

Weiterhin kann die Vorrichtung Bestandteil der Antennen und in diese integriert sein. Das heißt, daß dann die Antennenstruktur und die Leiterbahnen, die die elektronischen Bauteile bilden, auf einer gemeinsamen Leiterplatte aufgebracht sind und miteinander verschaltet sind. Hierbei kann auch zwischen dem Fußpunkt der Antenne und der Mantelwellensperre ein Vorverstärker, der ebenfalls auf der Platine integriert sein kann, geschaltet sein. An die Mantelwellensperre schließt sich eine Steckverbindung oder Zuleitung zu dem Endgerät an, wobei als Steckverbindung eine Buchse auf der Leiterplatte als besondere Ausgestaltung vorhanden ist.

  • A: zur AntenneNerstärker
  • B: zur Buchse
    • Furthermore, the device can be part of the antennas and integrated into them. This means that then the antenna structure and the conductor tracks, which form the electronic components, are mounted on a common circuit board and interconnected. In this case, a preamplifier, which can likewise be integrated on the circuit board, can also be connected between the base point of the antenna and the standing wave barrier. To the standing wave barrier, a plug connection or supply line connects to the terminal, wherein a socket on the circuit board is provided as a special configuration as a connector.
  • A: to the antenna amplifier
  • B: to the socket

    • Claims (8)

    1. Standing wave trap which has electronic components which form parallel circuits, wherein each of the parallel circuits is formed from at least one capacitor (1) and at least one coil (2), characterized in that the standing wave trap comprises a printed circuit on a printed circuit board having a coplanar line which comprises an internal conductor (5) and coplanar earth lines (4) provided on both sides, wherein one of the parallel circuits is in each case inserted on both sides in the respective coplanar earth line (4) and carries out a trapping function here, and the parallel circuits are formed from conductor tracks (1, 2) on the printed circuit board.
    2. Apparatus according to Claim 1, characterized in that at least one of the capacitors is formed from two at least partially parallel conductor tracks (1).
    3. Apparatus according to Claim 1 or 2, characterized in that at least one of the coils is formed from a meandering, in particular rectangular conductor track (2).
    4. Apparatus according to one of the preceding claims, characterized in that the printed circuit has solder points (6).
    5. Apparatus according to one of the preceding claims, characterized in that the conductor tracks on the printed circuit are in mirror symmetry to the conductor track (5).
    6. Apparatus according to one of the preceding claims, characterized in that the standing wave trap is of multistage design.
    7. Apparatus according to one of the preceding claims, characterized in that the apparatus is a constituent part of an antenna and is integrated in this antenna.
    8. Use of the standing wave trap according to one of the preceding claims, wherein the standing wave trap is connected between an antenna and a device which processes the signal supplied by the antenna, such as, in particular, a receiver or a television receiver.
    EP03009089A 2002-05-10 2003-04-19 Blocking device for surface waves Expired - Lifetime EP1361625B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10220669 2002-05-10
    DE10220669 2002-05-10

    Publications (3)

    Publication Number Publication Date
    EP1361625A2 EP1361625A2 (en) 2003-11-12
    EP1361625A3 EP1361625A3 (en) 2003-11-26
    EP1361625B1 true EP1361625B1 (en) 2005-07-27

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP03009089A Expired - Lifetime EP1361625B1 (en) 2002-05-10 2003-04-19 Blocking device for surface waves

    Country Status (3)

    Country Link
    EP (1) EP1361625B1 (en)
    AT (1) ATE300790T1 (en)
    DE (1) DE50300837D1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN112230172B (en) * 2020-09-21 2023-05-26 上海联影医疗科技股份有限公司 Notch device and magnetic resonance system

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4004257A (en) * 1975-07-09 1977-01-18 Vitek Electronics, Inc. Transmission line filter
    US4381566A (en) * 1979-06-14 1983-04-26 Matsushita Electric Industrial Co., Ltd. Electronic tuning antenna system
    DE3430659A1 (en) * 1984-08-21 1986-03-06 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen CABLE CONNECTION DEVICE FOR SYMMETRICAL ANTENNAS
    US5371466A (en) * 1992-07-29 1994-12-06 The Regents Of The University Of California MRI RF ground breaker assembly

    Also Published As

    Publication number Publication date
    DE50300837D1 (en) 2005-09-01
    EP1361625A3 (en) 2003-11-26
    ATE300790T1 (en) 2005-08-15
    EP1361625A2 (en) 2003-11-12

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