EP1535364A1 - Attenuation or termination element having a coaxial structure for high-frequency electromagnetic waves - Google Patents

Attenuation or termination element having a coaxial structure for high-frequency electromagnetic waves

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Publication number
EP1535364A1
EP1535364A1 EP03793557A EP03793557A EP1535364A1 EP 1535364 A1 EP1535364 A1 EP 1535364A1 EP 03793557 A EP03793557 A EP 03793557A EP 03793557 A EP03793557 A EP 03793557A EP 1535364 A1 EP1535364 A1 EP 1535364A1
Authority
EP
European Patent Office
Prior art keywords
damping
element according
shaped parts
resistance part
plate
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.)
Granted
Application number
EP03793557A
Other languages
German (de)
French (fr)
Other versions
EP1535364B1 (en
Inventor
Yann Blavette
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.)
Huber and Suhner AG
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Huber and Suhner 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
Application filed by Huber and Suhner AG filed Critical Huber and Suhner AG
Publication of EP1535364A1 publication Critical patent/EP1535364A1/en
Application granted granted Critical
Publication of EP1535364B1 publication Critical patent/EP1535364B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H01P1/225—Coaxial attenuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/24—Terminating devices
    • H01P1/26—Dissipative terminations
    • H01P1/266—Coaxial terminations

Definitions

  • the invention relates to a damping or termination element in coaxial construction for high-frequency electromagnetic waves, with at least one resistance part, which is mounted in the outer conductor and has at least one connection to an inner conductor part.
  • damping elements have been known for a long time.
  • US Pat. No. 3,227,975 shows a damping element for the non-adjustable attenuation of electromagnetic waves, which has a dielectric plate-shaped carrier which is arranged in a cylindrical outer conductor. This dielectric carrier is located between two inner conductor parts. A film of resistance material is applied to the carrier. A difficulty with such a damping element is the dissipation of the heat from the resistance part.
  • Performances can lead to high temperatures, which are undesirable.
  • the manufacturing costs are comparatively high, especially when high precision is required.
  • US Pat. No. 3,260,971 discloses a damping element in which a part is provided as a support for the resistor, which part has the shape of a wheel in cross section and has a roller-shaped hub, which also forms a support for resistance areas.
  • the production of such a carrier and in particular the application of the resistors is comparatively complex here.
  • the invention has for its object to provide a damping or 5 terminating element of the type mentioned, which is inexpensive and yet precise to manufacture.
  • the resistance part is thus constructed from at least two plate-shaped parts.
  • At least two platelet-shaped parts are arranged in a cross shape in cross section.
  • At least one inner conductor part is slotted on the front to accommodate the resistance part, the slotted area being designed in cross section to correspond to the cross section of the resistance part.
  • the inner conductor part can then be plugged onto the carrier during manufacture and is preferably connected to conductive layers LO which are applied to the carrier. If, for example, eight circuits are provided, the inner conductor can now be electrically connected to all of these eight circuits in this way, for example plugged or soldered.
  • the plate-shaped parts are each inserted with an outer edge in a groove on the inside of the outer conductor. This enables a particularly precise centering of the resistance part in the inner conductor.
  • the platelet-shaped parts can also be in these grooves
  • the plate-shaped parts can generally be fixed in a form-fitting manner in the grooves.
  • the damping element is particularly suitable in measurement technology J5 for the power protection of measuring heads or other measuring devices.
  • 1 a schematically shows a view of a partially sectioned damping element
  • 1 b schematically shows a view of a partially cut end element
  • Fig. 3 schematically shows a spatial view of a carrier with eight circuits and an inner conductor part
  • Fig. 4 shows schematically the joining of two plate-shaped parts.
  • the damping element 1 shown in FIGS. 1 and 2 is provided for high-frequency electromagnetic waves of 40 GHz, for example, and is used, for example, in measurement technology for the protection of a measuring device. It is produced in a coaxial construction and has a hollow cylindrical outer conductor 2, which has four grooves 6 in an inner side 2a according to FIG. 2, into which a resistance part 3 is inserted.
  • the resistance part 3 consists of at least two plate-shaped parts 4 and 5, each of which has a dielectric plate 4a or 5a, on which circuits 4b and 5b are applied on both sides.
  • the dielectric plates 4 and 5 consist, for example, of ceramic or another suitable dielectric.
  • the circuits 4b and 5b, as well as the further six circuits hidden in FIG. 3, are applied in a manner known per se, for example using screen printing or photolithography, to dielectric plates 4 and 5.
  • the platelet-shaped parts 4 and 5 thus form so-called wafers, the manufacture of which is known per se.
  • the resistance part 3 is connected to two inner conductor parts 7 and 8 arranged opposite one another, which are designed in the form of bolts or pins and which are each provided with cross-shaped slots 8b at one end 7a or 8a. According to FIG. 2, these slots 8b form four symmetrically arranged fingers 8c which engage in the resistance part 3. These fingers 8c are each connected to two conductor layers 9, in particular by means of solder joints 10.
  • the connection of the inner conductor parts 7 and 8 to the resistance part 3 can also be done mechanically, for example by clamping.
  • each inner conductor part 7 or 8 is connected to each of the eight circuits, in particular soldered. Each of the eight circuits thus has its own electrical contact.
  • the resistance part 3 is assembled according to FIGS. 3 and 4 from two separately produced plate-shaped parts 4 and 5.
  • the platelet-shaped parts 4 and 5 consist of the dielectric platelets 4a and 5a, the applied eight circuits, which are not shown in FIG. 4, and conductor layers 9 and 19.
  • Each platelet-shaped part 4 and 5 is also provided with a central slot 12 and 13, respectively, the width of these slots 12 and 13 corresponding to the thickness of the plate-shaped parts 4 and 5, respectively.
  • the plate-shaped parts 4 and 5 are plugged together in the direction of arrow 14 according to FIG. 4.
  • the slots 12 and 13 thus receive the other part 4 and 5, respectively. If the plate-shaped parts 4 and 5 are plugged together, they form the arrangement shown in FIG.
  • the plate-shaped parts 4 and 5 are perpendicular to one another, as can be seen.
  • the plate-shaped parts 4 and 5 can be slightly offset in the axial direction.
  • an embodiment is conceivable in which more than two plate-shaped parts 4 and 5 are assembled.
  • the conductor layers 9 and 19 serve for the connection of the inner conductor part 7. As already explained, the connection can be made by soldering points 10 or by mechanical clamping. In the arrangement according to FIG. 3, only one inner conductor part 7 is provided. If a second inner conductor part 8 according to FIG. 1 is provided, the platelet-shaped parts 4 and 5 are correspondingly provided with further conductor layers 9 and 19.
  • the resistance part 3 is inserted into the inner conductor 2, with this being centered and precisely aligned in the grooves 4.
  • the resistance part 3 is preferably connected in the grooves 6 with solder points 11 to the outer conductor 2.
  • the inner conductor 3 is thus connected to the outer conductor 2 at four points, which enables the aforementioned good heat dissipation.
  • the heat generated in the resistance part 3 can thus be dissipated into the outer conductor 2 in several directions.
  • the centering of the resistance part 3 in the four grooves 6 allows a comparatively large tolerance in the width of the electrical plates 4a and 5a. Since the platelet-shaped parts 4 and 5 can be produced before assembly, the circuits 4b and 5b can be applied in a manner known per se and inexpensively using screen printing or photolithography.
  • the production of the electrical platelets 4a and 5a is also possible inexpensively, for example by cutting with a laser beam or by punching.
  • the terminating element 1 'shown in FIG. 1b is essentially designed like the damping element 1, but only has an inner conductor part, and the circuits 4a' and 5b 'and the circuits not visible here are correspondingly guided to the outside on the resistance part 3'.
  • the end element 1 ' is used, for example, to prevent radiation or to eliminate impurities.
  • Damping elements 1 can also be arranged in series one after the other and after one or more damping elements 1 a terminating element 1 'can be connected.
  • the heat emission can be distributed over several elements.

Landscapes

  • Non-Reversible Transmitting Devices (AREA)
  • Waveguide Aerials (AREA)
  • Communication Cables (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention relates to an attenuation or termination element comprising at least one resistance part which is mounted in an outer conductor and has at least one connection to an inner conductor part. The resistance part is produced from at least two separately produced plate-shaped parts which are desirably provided with a central slit enabling them to be fitted together. The attenuation or termination element can be economically produced and has high heat dissipation.

Description

Dämpfungs- oder Abschlusselement in Koaxialbauweise für hochfrequente elektromagnetische Wellen Damping or closing element in coaxial design for high-frequency electromagnetic waves
Die Erfindung betrifft ein Dämpfungs- oder Abschlusselement in Koaxialbauweise für hochfrequent elektromagnetische Wellen, mit wenigstens einem Widerstandsteil, der im Aussenleiter gelagert und wenigstens einen Anschluss an einen Innenleiterteil aufweist. Solche Dämpfungselemente sind seit langem bekannt. Beispielsweise zeigt die US 3,227,975 ein Dämpfungselement zur nichteinstellbaren Abschwächung von elektromagnetischen Wellen, das einen dielektrischen plattenförmigen Träger aufweist, der in einem zylindrischen Aussenleiter angeordnet ist. Dieser dielektrische Träger befindet sich zwischen zwei Innenleiterteilen. Auf dem Träger ist ein Film aus Widerstandsmaterial aufgetragen. Eine Schwierigkeit bei einem solchen Dämpfungselement ist die Ableitung der Wärme aus dem Widerstandsteil. Besonders bei hohenThe invention relates to a damping or termination element in coaxial construction for high-frequency electromagnetic waves, with at least one resistance part, which is mounted in the outer conductor and has at least one connection to an inner conductor part. Such damping elements have been known for a long time. For example, US Pat. No. 3,227,975 shows a damping element for the non-adjustable attenuation of electromagnetic waves, which has a dielectric plate-shaped carrier which is arranged in a cylindrical outer conductor. This dielectric carrier is located between two inner conductor parts. A film of resistance material is applied to the carrier. A difficulty with such a damping element is the dissipation of the heat from the resistance part. Especially at high
Leistungen kann es hier zu hohen Temperaturen kommen, welche unerwünscht sind. Zudem sind die Kosten für die Herstellung vergleichsweise hoch, insbesondere dann, wenn eine hohe Präzision gefordert ist .Performances can lead to high temperatures, which are undesirable. In addition, the manufacturing costs are comparatively high, especially when high precision is required.
Durch die US 3,260,971 ist ein Dämpfungselement bekannt geworden, bei welchem als Träger für den Widerstand ein Teil vorgesehen ist, der im Querschnitt die Form eines Rades aufweist und eine walzenförmige Nabe besitzt, die ebenfalls einen Träger für Widerstandsbereiche bildet. Die Herstellung eines solchen Trägers und insbesondere das Aufbringen der Widerstände ist hier vergleichsweise aufwendig. Insbesondere ist es hier kaum möglich, die Widerstände mittels Siebdruck oder Photolithographie aufzubringen, wie dies in vielen Fällen wünschenswert und kostengünstig ist.US Pat. No. 3,260,971 discloses a damping element in which a part is provided as a support for the resistor, which part has the shape of a wheel in cross section and has a roller-shaped hub, which also forms a support for resistance areas. The production of such a carrier and in particular the application of the resistors is comparatively complex here. In particular, it is hardly possible here to screen the resistors using screen printing or photolithography to apply, as is desirable and inexpensive in many cases.
Der Erfindung liegt die Aufgabe zugrunde, ein Dämpfungs- oder 5 Abschlusselement der genannten Art zu schaffen, das kostengünstiger und dennoch präzis herstellbar ist .The invention has for its object to provide a damping or 5 terminating element of the type mentioned, which is inexpensive and yet precise to manufacture.
Die Aufgabe ist bei einem gattungsgemässen Dämpfungs- oder Abschlusselement dadurch gelöst, dass der Widerstandsteil aus we-With a damping or termination element of the generic type, the object is achieved in that the resistance part is made of
LO nigstens zwei separat hergestellten plättchenförmigen Teilen hergestellt ist. Beim erfindungsgemässen Dämpfungs- oder Abschlusselement ist somit der Widerstandsteil aus wenigstens zwei plättchenförmigen Teilen aufgebaut . Vor dem Zusammenbau der plättchenförmigen Teile werden auf diese beispielsweise mitLO is made at least two separately manufactured platelet-shaped parts. In the damping or terminating element according to the invention, the resistance part is thus constructed from at least two plate-shaped parts. Before assembling the platelet-shaped parts, for example, on them
L5 Siebdruck oder Photolithographie kostengünstig Schaltungen aufgebracht .L5 screen printing or photolithography inexpensive circuits applied.
Nach einer Weiterbildung der Erfindung sind wenigstens zwei plättchenförmige Teile im Querschnitt kreuzförmig angeordnet .According to a development of the invention, at least two platelet-shaped parts are arranged in a cross shape in cross section.
.0 Dies ermöglicht ein Dämpfungselement oder einen Abschluss mit acht Schaltungen. Da wie erwähnt die plättchenförmigen Teile vorzugsweise vor dem Zusammenbau mit den Schaltungen versehen werden, können diese acht Schaltungen kostengünstig beispielsweise mit Siebdruck oder Photolithographie aufgebracht werden..0 This enables a damping element or a termination with eight circuits. Since, as mentioned, the platelet-shaped parts are preferably provided with the circuits before assembly, these eight circuits can be applied inexpensively, for example using screen printing or photolithography.
.5 Eine solche kreuzförmige Anordnung ermöglicht eine besonders günstige und präzise Lagerung des Trägers im Innern eines zylindrischen Aussenleiters . Da die Wärme nach allen Seiten abstrahlen kann, ist eine hohe Ableitung der Wärme aus den Widerstandsschaltungen möglich. Bei gleicher Leistung ergeben sich.5 Such a cross-shaped arrangement enables a particularly cheap and precise mounting of the carrier inside a cylindrical outer conductor. Since the heat can radiate on all sides, a high dissipation of the heat from the resistance circuits is possible. With the same performance result
30 damit tiefere Oberflächentemperaturen. Die Lebensdauer des Dämpfungselementes kann damit verlängert werden. Vorteilhaft ist zudem, dass die koaxiale Struktur im Bereich des Dämpfungselementes bzw. Abschlusselements im Wesentlichen erhalten bleibt und dadurch weniger Reflexionen entstehen als bei einer planaren Struktur.30 lower surface temperatures. The service life of the damping element can thus be extended. It is also advantageous that the coaxial structure in the region of the damping element or end element is essentially retained and this results in fewer reflections than with a planar structure.
Nach einer Weiterbildung der Erfindung ist wenigstens ein Innen- 5 leiterteil frontseitig zur Aufnahme des Widerstandsteils geschlitzt, wobei der geschlitzte Bereich im Querschnitt korrespondierend zum Querschnitt des Widerstandsteils ausgebildet ist . Der Innenleiterteil kann dann bei der Herstellung auf den Träger aufgesteckt werden und wird vorzugsweise mit leitenden Schichten LO verbunden, die auf die Träger aufgebracht sind. Sind beispielsweise acht Schaltungen vorgesehen, so kann nun auf diese Weise der Innenleiter mit allen diesen acht Schaltungen direkt elektrisch verbunden werden, beispielsweise gesteckt oder gelötet.According to a development of the invention, at least one inner conductor part is slotted on the front to accommodate the resistance part, the slotted area being designed in cross section to correspond to the cross section of the resistance part. The inner conductor part can then be plugged onto the carrier during manufacture and is preferably connected to conductive layers LO which are applied to the carrier. If, for example, eight circuits are provided, the inner conductor can now be electrically connected to all of these eight circuits in this way, for example plugged or soldered.
L5 Nach einer Weiterbildung der Erfindung sind die plättchenförmigen Teile jeweils mit einem äusseren Rand in jeweils eine Nut auf der Innenseite des Aussenleiters eingesetzt. Dies ermöglicht eine besonders genaue Zentrierung des Widerstandsteils im Innenleiter. In diesen Nuten können zudem die plättchenförmigen TeileL5 According to a development of the invention, the plate-shaped parts are each inserted with an outer edge in a groove on the inside of the outer conductor. This enables a particularly precise centering of the resistance part in the inner conductor. The platelet-shaped parts can also be in these grooves
20 durch Löten mit dem Aussenleiter verbunden werden. Dies ist jedoch nicht zwingend, da die plättchenförmigen Teile in den Nuten grundsätzlich formschlüssig fixierbar sind.20 are connected to the outer conductor by soldering. However, this is not mandatory, since the plate-shaped parts can generally be fixed in a form-fitting manner in the grooves.
Das Dämpfungselement eignet sich insbesondere in der Messtechnik J5 für den Leistungsschutz von Messköpfen oder anderen Messvorrichtungen.The damping element is particularly suitable in measurement technology J5 for the power protection of measuring heads or other measuring devices.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:
1010
Fig. 1 a schematisch eine Ansicht eines teilweise geschnittenen Dämpfungselementes, Fig. 1 b schematisch eine Ansicht eines teilweise geschnittenen Abschlusselementes,1 a schematically shows a view of a partially sectioned damping element, 1 b schematically shows a view of a partially cut end element,
Fig. 2 einen Schnitt durch das Dämpfungselement gemäss der Linie II-II der Fig. la,2 shows a section through the damping element along the line II-II of FIG.
Fig. 3 schematisch eine räumliche Ansicht eines Trägers mit acht Schaltungen und einem Innenleiterteil undFig. 3 schematically shows a spatial view of a carrier with eight circuits and an inner conductor part and
Fig. 4 schematisch das Fügen von zwei plättchenförmigen Teilen.Fig. 4 shows schematically the joining of two plate-shaped parts.
Das in den Fig. 1 und 2 gezeigte Dämpfungselement 1 ist für hochfrequente elektromagnetische Wellen von beispielsweise 40 GHz vorgesehen und dient beispielsweise in der Messtechnik für den Schutz eines Messgerätes. Es ist in Koaxialbauweise hergestellt und weist einen hohlzylindrischen Aussenleiter 2 auf, der in einer Innenseite 2a gemäss Fig. 2 vier Nuten 6 aufweist, in die ein Widerstandsteil 3 eingesetzt ist .The damping element 1 shown in FIGS. 1 and 2 is provided for high-frequency electromagnetic waves of 40 GHz, for example, and is used, for example, in measurement technology for the protection of a measuring device. It is produced in a coaxial construction and has a hollow cylindrical outer conductor 2, which has four grooves 6 in an inner side 2a according to FIG. 2, into which a resistance part 3 is inserted.
Der Widerstandsteil 3 besteht aus wenigstens zwei plättchenförmigen Teilen 4 und 5, die jeweils ein dielektrisches Plattchen 4a bzw. 5a aufweisen, auf das beidseitig Schaltungen 4b bzw. 5b aufgebracht sind. Die dielektrischen Plättchen 4 und 5 bestehen beispielsweise aus Keramik oder einem anderen geeigneten Dielek- tikum. Die Schaltungen 4b und 5b, sowie die in Fig. 3 verdeckten weiteren sechs Schaltungen sind in an sich bekannter Weise beispielsweise mit Siebdruck oder Photolithographie auf dielektrischen Plattchen 4 und 5 aufgebracht. Die plättchenförmigen Tei- le 4 und 5 bilden somit sogenannte Wafer, deren Herstellung an sich bekannt ist . Der Widerstandsteil 3 ist an zwei gegenüber angeordneten Innen- leiterteilen 7 und 8 angeschlossen, die bolzen- oder stiftförmig ausgebildet sind und die jeweils an einem Ende 7a bzw. 8a mit kreuzförmigen Schlitzen 8b versehen sind. Durch diese Schlitze 8b werden gemäss Fig. 2 vier symmetrisch angeordnete Finger 8c gebildet, welche in den Widerstandsteil 3 eingreifen. Diese Finger 8c sind jeweils mit zwei Leiterschichten 9 verbunden, insbesondere mittels Lötstellen 10. Die Verbindung der Innenleiter- teile 7 und 8 zum Widerstandsteil 3 kann auch mechanisch, bei- spielsweise durch Klemmung erfolgen. Wie ersichtlich, ist jeder Innenleiterteil 7 bzw. 8 mit jeder der acht Schaltungen verbunden, insbesondere verlötet. Jede der acht Schaltungen besitzt somit einen eigenen elektrischen Kontakt.The resistance part 3 consists of at least two plate-shaped parts 4 and 5, each of which has a dielectric plate 4a or 5a, on which circuits 4b and 5b are applied on both sides. The dielectric plates 4 and 5 consist, for example, of ceramic or another suitable dielectric. The circuits 4b and 5b, as well as the further six circuits hidden in FIG. 3, are applied in a manner known per se, for example using screen printing or photolithography, to dielectric plates 4 and 5. The platelet-shaped parts 4 and 5 thus form so-called wafers, the manufacture of which is known per se. The resistance part 3 is connected to two inner conductor parts 7 and 8 arranged opposite one another, which are designed in the form of bolts or pins and which are each provided with cross-shaped slots 8b at one end 7a or 8a. According to FIG. 2, these slots 8b form four symmetrically arranged fingers 8c which engage in the resistance part 3. These fingers 8c are each connected to two conductor layers 9, in particular by means of solder joints 10. The connection of the inner conductor parts 7 and 8 to the resistance part 3 can also be done mechanically, for example by clamping. As can be seen, each inner conductor part 7 or 8 is connected to each of the eight circuits, in particular soldered. Each of the eight circuits thus has its own electrical contact.
Der Widerstandsteil 3 wird gemäss den Fig. 3 und 4 aus zwei separat hergestellten plättchenförmigen Teilen 4 und 5 zusammengebaut. Die plättchenförmigen Teile 4 und 5 bestehen, wie oben erläutert, aus den dielektrischen Plättchen 4a bzw. 5a, den aufgebrachten acht Schaltungen, die in Fig. 4 nicht gezeigt sind, so- wie Leiterschichten 9 bzw. 19. Jeder plattchenförmige Teil 4 bzw. 5 wird zudem mit einem mittigen Schlitz 12 bzw. 13 versehen, wobei die Breite dieser Schlitze 12 und 13 der Dicke der plättchenförmigen Teile 4 bzw. 5 entspricht. Für den Zusammenbau werden die plättchenförmigen Teile 4 und 5 gemäss Fig. 4 in Richtung des Pfeiles 14 zusammengesteckt. Die Schlitze 12 und 13 nehmen hierbei somit jeweils den anderen Teil 4 bzw. 5 auf. Sind die plättchenförmigen Teile 4 und 5 zusammengesteckt, so bilden sie die in Fig. 3 gezeigte Anordnung, bei welcher die plättchenförmigen Teile 4 und 5 wie ersichtlich senkrecht aufeinander stehen. Grundsätzlich können die plättchenförmigen Teile 4 und 5 in Axialrichtung etwas versetzt sein. Zudem ist eine Ausführung denkbar, bei welcher mehr als zwei plattchenförmige Teile 4 und 5 zusammengebaut sind. Die Leiterschichten 9 und 19 dienen für den Anschluss des Inne - leiterteils 7. Wie bereits erläutert, kann die Verbindung durch Lotstellen 10 oder durch mechanische Klemmung erfolgen. Bei der Anordnung gemäss Fig. 3 ist lediglich ein Innenleiterteil 7 vor- gesehen. Ist ein zweiter Innenleiterteil 8 gemäss Fig. 1 vorgesehen, so werden die plättchenförmigen Teile 4 und 5 entsprechend mit weiteren Leiterschichten 9 und 19 versehen.The resistance part 3 is assembled according to FIGS. 3 and 4 from two separately produced plate-shaped parts 4 and 5. As explained above, the platelet-shaped parts 4 and 5 consist of the dielectric platelets 4a and 5a, the applied eight circuits, which are not shown in FIG. 4, and conductor layers 9 and 19. Each platelet-shaped part 4 and 5 is also provided with a central slot 12 and 13, respectively, the width of these slots 12 and 13 corresponding to the thickness of the plate-shaped parts 4 and 5, respectively. For assembly, the plate-shaped parts 4 and 5 are plugged together in the direction of arrow 14 according to FIG. 4. The slots 12 and 13 thus receive the other part 4 and 5, respectively. If the plate-shaped parts 4 and 5 are plugged together, they form the arrangement shown in FIG. 3, in which the plate-shaped parts 4 and 5 are perpendicular to one another, as can be seen. Basically, the plate-shaped parts 4 and 5 can be slightly offset in the axial direction. In addition, an embodiment is conceivable in which more than two plate-shaped parts 4 and 5 are assembled. The conductor layers 9 and 19 serve for the connection of the inner conductor part 7. As already explained, the connection can be made by soldering points 10 or by mechanical clamping. In the arrangement according to FIG. 3, only one inner conductor part 7 is provided. If a second inner conductor part 8 according to FIG. 1 is provided, the platelet-shaped parts 4 and 5 are correspondingly provided with further conductor layers 9 and 19.
Der Widerstandsteil 3 wird in den Innenleiter 2 eingesetzt, wo- bei dieser in den Nuten 4 zentriert und präzise ausgerichtet wird. Vorzugsweise ist der Widerstandsteil 3 in den Nuten 6 mit Lotstellen 11 mit dem Aussenleiter 2 verbunden. Der Innenleiter 3 ist somit an vier Stellen mit dem Aussenleiter 2 verbunden, was die erwähnte gute Wärmeableitung ermöglicht. Die im Wi- derstandsteil 3 entstehende Wärme kann somit in mehreren Richtungen in den Aussenleiter 2 abgeleitet werden. Die Zentrierung des Widerstandsteils 3 in den vier Nuten 6 erlaubt eine vergleichsweise grosse Toleranz in der Breite der elektrischen Plättchen 4a und 5a. Da die plättchenförmigen Teile 4 und 5 vor dem Zusammenbau hergestellt werden können, ist das Aufbringen der Schaltungen 4b und 5b in an sich bekannter Weise und kostengünstig mit Siebdruck oder Photolithographie möglich. Die Herstellung der elektrischen Plättchen 4a und 5a ist ebenfalls kostengünstig beispielsweise durch Schneiden mit einem Laserstrahl oder durch Stanzen möglich.The resistance part 3 is inserted into the inner conductor 2, with this being centered and precisely aligned in the grooves 4. The resistance part 3 is preferably connected in the grooves 6 with solder points 11 to the outer conductor 2. The inner conductor 3 is thus connected to the outer conductor 2 at four points, which enables the aforementioned good heat dissipation. The heat generated in the resistance part 3 can thus be dissipated into the outer conductor 2 in several directions. The centering of the resistance part 3 in the four grooves 6 allows a comparatively large tolerance in the width of the electrical plates 4a and 5a. Since the platelet-shaped parts 4 and 5 can be produced before assembly, the circuits 4b and 5b can be applied in a manner known per se and inexpensively using screen printing or photolithography. The production of the electrical platelets 4a and 5a is also possible inexpensively, for example by cutting with a laser beam or by punching.
Das in der Fig. lb gezeigte Abschlusselement 1' ist im Wesentlichen wie das Dämpfungselement 1 ausgebildet, weist aber lediglich einen Innenleiterteil auf und auf dem Widerstandsteil 3' die Schaltungen 4a' und 5b' sowie die hier nicht sichtbaren Schaltungen sind entsprechend nach aussen geführt. Das Abschlusselement 1' dient beispielsweise zur Verhinderung von Ab- strahlungen oder zur Elimination von Störstellen. Dämpfungselemente 1 können auch in Serie nacheinander angeordnet sein und nach einem oder mehreren Dämpfungselementen 1 kann ein Abschlusselement 1' geschaltet sein. Die Wärmeabgabe kann so auf mehrere Elemente verteilt werden. The terminating element 1 'shown in FIG. 1b is essentially designed like the damping element 1, but only has an inner conductor part, and the circuits 4a' and 5b 'and the circuits not visible here are correspondingly guided to the outside on the resistance part 3'. The end element 1 'is used, for example, to prevent radiation or to eliminate impurities. Damping elements 1 can also be arranged in series one after the other and after one or more damping elements 1 a terminating element 1 'can be connected. The heat emission can be distributed over several elements.

Claims

Patentansprüche claims
1. Dämpfungs- oder Abschlusselement in Koaxialbauweise für hochfrequente elektromagnetische Wellen, mit wenigstens einem Widerstandsteil (3, 3'), der in einem Aussenleiter (2) gelagert ist und wenigstens einen Anschluss an einen Innenleiterteil (7, 8) aufweist, dadurch gekennzeichnet, dass der Widerstandsteil (3, 3') aus wenigstens zwei separat hergestellten plättchenförmigen Teilen (4, 5; 4', 5') hergestellt ist.1. Damping or terminating element in coaxial design for high-frequency electromagnetic waves, with at least one resistance part (3, 3 ') which is mounted in an outer conductor (2) and has at least one connection to an inner conductor part (7, 8), characterized in that that the resistance part (3, 3 ') is made of at least two separately produced platelet-shaped parts (4, 5; 4', 5 ').
2. Dämpfungs- oder Abschlusselement nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens ein Innenleiterteil (7, 8) die beiden plättchenförmigen Teile (4, 5; 4', 5') fixiert .2. Damping or closing element according to claim 1, characterized in that at least one inner conductor part (7, 8) fixes the two plate-shaped parts (4, 5; 4 ', 5').
3. Dämpfungs- oder Abschlusselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die plättchenförmigen Teile jeweils mit einem mittigen Schlitz (12, 13) versehen sind und mit diesen Schlitzen (12, 13) zusammengesteckt sind.3. damping or closing element according to claim 1 or 2, characterized in that the plate-shaped parts are each provided with a central slot (12, 13) and with these slots (12, 13) are plugged together.
4. Dämpfungs- oder Abschlusselement nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwei plattchenförmige Teile (4, 5; 4', 5') vorgesehen sind, die kreuzförmig zusammengesteckt sind.4. damping or end element according to one of claims 1 to 3, characterized in that two plate-shaped parts (4, 5; 4 ', 5') are provided, which are put together in a cross shape.
5. Dämpfungs- oder Abschlusselement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die plättchenförmigen Teile (4, 5; 4', 5') jeweils beidseitig Schaltungen (4b, 5b; 4b', 5b') aufweisen, die insbesondere mittels Siebdruck oder Photolithographie auf dielektrischen Plättchen (4a, 5a; 4a', 5a') aufgebracht sind.5. damping or terminating element according to one of claims 1 to 4, characterized in that the plate-shaped parts (4, 5; 4 ', 5') each have circuits (4b, 5b; 4b ', 5b') on both sides, in particular using screen printing or photolithography on dielectric Platelets (4a, 5a; 4a ', 5a') are applied.
6. Dämpfungs- oder Abschlusselement nach Anspruch 5, dadurch gekennzeichnet, dass der Widerstandsteil (3, 3') wenigstens acht Schaltungen (4b, 5b; 4b', 5b') aufweist.6. damping or terminating element according to claim 5, characterized in that the resistance part (3, 3 ') has at least eight circuits (4b, 5b; 4b', 5b ').
7. Dämpfungs- oder Abschlusselement nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass wenigstens ein Innenleiterteil (7, 8) an einem Ende (7a, 8a) geschlitzt ist, wobei der geschlitzte Bereich im Querschnitt korrespondierend zum Querschnitt des Widerstandsteils (3, 3') ausgebildet ist .7. Damping or termination element according to one of claims 1 to 6, characterized in that at least one inner conductor part (7, 8) is slotted at one end (7a, 8a), the slotted area corresponding in cross section to the cross section of the resistance part (3 , 3 ') is formed.
8. Dämpfungs- oder Abschlusselement nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Widerstandsteil (3, 3') in Nuten (6) der Innenseite (2a) des Aussenlei- ters (2) eingreift und in diesen Nuten (6) zentriert ist.8. damping or termination element according to one of claims 1 to 7, characterized in that the resistance part (3, 3 ') engages in grooves (6) on the inside (2a) of the outer conductor (2) and in these grooves (6 ) is centered.
9. Dämpfungs- oder Abschlusselement nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Widerstandsteil (3, 3') auf der Innenseite des Aussenleiters (2) mit diesem verlötet ist .9. damping or terminating element according to one of claims 1 to 8, characterized in that the resistance part (3, 3 ') on the inside of the outer conductor (2) is soldered to the latter.
10. Dämpfungselement nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es ein Teil oder Glied einer Messkette ist, insbesondere eine koaxiale Messkette. 10. Damping element according to one of claims 1 to 9, characterized in that it is part or link of a measuring chain, in particular a coaxial measuring chain.
EP03793557A 2002-09-04 2003-08-29 Attenuation or termination element having a coaxial structure for high-frequency electromagnetic waves Expired - Lifetime EP1535364B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH150702 2002-09-04
CH15072002 2002-09-04
PCT/CH2003/000590 WO2004023596A1 (en) 2002-09-04 2003-08-29 Attenuation or termination element having a coaxial structure for high-frequency electromagnetic waves

Publications (2)

Publication Number Publication Date
EP1535364A1 true EP1535364A1 (en) 2005-06-01
EP1535364B1 EP1535364B1 (en) 2008-03-26

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EP03793557A Expired - Lifetime EP1535364B1 (en) 2002-09-04 2003-08-29 Attenuation or termination element having a coaxial structure for high-frequency electromagnetic waves

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US (1) US7212079B2 (en)
EP (1) EP1535364B1 (en)
AT (1) ATE390724T1 (en)
AU (1) AU2003254692A1 (en)
DE (1) DE50309484D1 (en)
HK (1) HK1075134A1 (en)
WO (1) WO2004023596A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4456067B2 (en) * 2005-12-28 2010-04-28 ヒロセ電機株式会社 High frequency element
FR2918505B1 (en) * 2007-07-03 2011-04-01 Radialla COAXIAL ATTENUATOR
DE102010045780A1 (en) * 2010-09-17 2012-03-22 Rohde & Schwarz Gmbh & Co. Kg Calibration unit for a measuring device
CN109786913B (en) * 2019-03-22 2023-09-01 西安雷航电子信息技术有限公司 Radio frequency coaxial load based on thin film resistor

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GB606891A (en) * 1944-06-14 1948-08-23 Polytechnic Inst Brooklyn Improvements relating to attenuators for electric waves
US2864063A (en) * 1957-12-20 1958-12-09 Polytechnic Inst Brooklyn Microwave control devices
US3227975A (en) * 1964-08-31 1966-01-04 Hewlett Packard Co Fixed coaxial line attenuator with dielectric-mounted resistive film
US3260971A (en) * 1964-12-03 1966-07-12 Weinschel Eng Co Inc Multi-layer card attenuator for microwave frequencies
US4272739A (en) * 1979-10-18 1981-06-09 Morton Nesses High-precision electrical signal attenuator structures
JPS61264801A (en) 1985-05-17 1986-11-22 Mitsubishi Electric Corp Circularly polarized wave generator
US5047737A (en) * 1988-03-31 1991-09-10 Wiltron Company Directional coupler and termination for stripline and coaxial conductors
US5194834A (en) * 1991-06-13 1993-03-16 Semflex, Inc. Apparatus for a matched and adjustable microwave frequency selective attenuator unit

Non-Patent Citations (1)

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Title
See references of WO2004023596A1 *

Also Published As

Publication number Publication date
EP1535364B1 (en) 2008-03-26
DE50309484D1 (en) 2008-05-08
US7212079B2 (en) 2007-05-01
WO2004023596A1 (en) 2004-03-18
AU2003254692A1 (en) 2004-03-29
US20060097817A1 (en) 2006-05-11
ATE390724T1 (en) 2008-04-15
HK1075134A1 (en) 2005-12-02

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