EP1535364B1 - Element d'attenuation ou de terminaison a structure coaxiale pour ondes electromagnetiques haute frequence - Google Patents

Element d'attenuation ou de terminaison a structure coaxiale pour ondes electromagnetiques haute frequence Download PDF

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Publication number
EP1535364B1
EP1535364B1 EP03793557A EP03793557A EP1535364B1 EP 1535364 B1 EP1535364 B1 EP 1535364B1 EP 03793557 A EP03793557 A EP 03793557A EP 03793557 A EP03793557 A EP 03793557A EP 1535364 B1 EP1535364 B1 EP 1535364B1
Authority
EP
European Patent Office
Prior art keywords
attenuation
termination element
plate
shaped parts
outer 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
EP03793557A
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German (de)
English (en)
Other versions
EP1535364A1 (fr
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
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Filing date
Publication date
Application filed by Huber and Suhner AG filed Critical Huber and Suhner AG
Publication of EP1535364A1 publication Critical patent/EP1535364A1/fr
Application granted granted Critical
Publication of EP1535364B1 publication Critical patent/EP1535364B1/fr
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 Koaxialbauweise for high-frequency electromagnetic waves, with at least one resistance part, which is mounted in the outer conductor and has at least one electrical connection to an inner conductor part.
  • damping elements have long been known.
  • a difficulty with such a damping element is the dissipation of heat from the resistance part. Especially at high power levels, it can lead to high temperatures, which are undesirable.
  • the cost of manufacturing is relatively high, especially when high precision is required. Another difficulty is the required length of the damping element for a desired damping.
  • the generic US 2,689,294 discloses a damping element in coaxial design for electromagnetic waves.
  • a resistance part is mounted in an outer conductor and has an electrical connection to an inner conductor part.
  • the resistance part has platelet-shaped carrier, which are fastened between inner conductor part and outer conductor.
  • the invention has for its object to provide a damping or terminating element of the type mentioned, which is cheaper, more compact, yet precise to produce.
  • the resistance part consists of at least two rotated, plate-shaped parts which are each provided with a central slot and can be plugged together with them.
  • circuits Prior to assembling the plate-like parts, circuits are inexpensively applied to them, for example by screen printing or photolithography.
  • At least two plate-shaped parts are arranged in cross-section in a cross shape. This allows a damping element or termination with eight circuits. Since, as mentioned, the plate-shaped parts are preferably provided with the circuits before assembly, these eight circuits can be inexpensively applied, for example, by screen printing or photolithography.
  • Such a cross-shaped arrangement enables a particularly favorable and precise mounting of the carrier in the interior of a cylindrical outer conductor. Since the heat can radiate on all sides, a high dissipation of heat from the resistance circuits is possible. At the same power, this results in lower surface temperatures. The 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 closing element is substantially retained and This results in fewer reflections than in a planar structure.
  • At least one inner conductor part is slotted on the front side for receiving the resistance part, wherein the slotted region is formed in cross section corresponding to the cross section of the resistance part.
  • the inner conductor part can then be attached to the carrier during manufacture and is preferably connected to conductive layers which are applied to the carriers. For example, if eight circuits are provided, the inner conductor can now be electrically connected directly to all these eight circuits, for example, plugged or soldered in this way.
  • the plate-shaped parts are each inserted with an outer edge in each case a groove on the inside of the outer conductor. This allows a particularly accurate centering of the resistance part in the inner conductor. In these grooves also the plate-shaped parts can be connected by soldering to the outer conductor. However, this is not mandatory, since the plate-shaped parts are basically positively fixed in the grooves.
  • the damping element is particularly suitable in metrology for the power protection of measuring heads or other measuring devices.
  • damping element 1 is provided for high-frequency electromagnetic waves, for example, 40 GHz and is used for example in metrology for the protection of a meter. It is manufactured in coaxial design and has a hollow cylindrical outer conductor 2, which in an inner side 2a according to Fig. 2 has four grooves 6, in which a resistance part 3 is inserted.
  • the resistance part 3 consists of at least two plate-shaped parts 4 and 5, each having a dielectric plate 4a and 5a, respectively, on which circuits 4b and 5b are applied on both sides.
  • the dielectric plates 4 and 5 are made of, for example, ceramic or other suitable dielectic.
  • the circuits 4b and 5b, and the in Fig. 3 concealed another six circuits are applied in a conventional manner, for example by screen printing or photolithography on dielectric plates 4 and 5.
  • the plate-shaped parts 4 and 5 thus form so-called wafers, the production of which is known per se.
  • the resistance part 3 is connected to two opposing inner conductor parts 7 and 8, which are bolt-shaped or pin-shaped and which are each provided at one end 7a and 8a with cross-shaped slots 8b. Through these slots 8b are according to Fig. 2 formed 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 according to the 3 and 4 assembled from two separately manufactured plate-shaped parts 4 and 5.
  • the plate-like parts 4 and 5 consist, as explained above, of the dielectric plates 4a and 5a, the applied eight circuits, which in Fig. 4
  • Each plate-shaped part 4 or 5 is also provided with a central slot 12 and 13, wherein the width of these slots 12 and 13 corresponds to the thickness of the plate-shaped parts 4 and 5, respectively.
  • the plate-shaped parts 4 and 5 according to Fig. 4 put together in the direction of arrow 14.
  • the slots 12 and 13 thus each take on the other part 4 and 5, respectively.
  • 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 Lotstellen 10 or by mechanical clamping. In the arrangement according to Fig. 3 only one inner conductor part 7 is provided. Is a second inner conductor part 8 according to Fig. 1 provided, the plate-shaped parts 4 and 5 are provided in accordance with further conductor layers 9 and 19.
  • the resistance part 3 is inserted into the inner conductor 2, wherein this is centered in the grooves 4 and precisely aligned.
  • the resistance part 3 is connected in the grooves 6 with Lotstellen 11 with the outer conductor 2.
  • the inner conductor 3 is thus connected at four points to the outer conductor 2, which allows the mentioned good heat dissipation.
  • the resulting in the resistance part 3 heat can thus be derived in several directions in the outer conductor 2.
  • 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 plate-like parts 4 and 5 can be produced before assembly, the application of the circuits 4b and 5b in a conventional manner and inexpensively by screen printing or photolithography is possible.
  • the production of the electrical platelets 4a and 5a is also possible cost-effectively, for example by cutting with a laser beam or by punching.
  • end element 1 ' is essentially formed as the damping element 1, but has only only one inner conductor part and on the resistance part 3', the circuits 4a 'and 5b' and the circuits not visible here are guided according to the outside.
  • the termination element 1 ' serves, for example, to prevent radiation or to eliminate impurities.
  • Damping elements 1 can also be arranged one after the other in series, and after one or more damping elements 1, a terminating element 1 'can be connected.
  • the heat output 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)

Claims (9)

  1. Elément d'atténuation ou de terminaison dans une construction coaxiale pour ondes électromagnétiques à haute fréquence, avec au moins un élément de résistance (3, 3') qui présente au moins une connexion électrique sur une extrémité (7a, 8a) d'une partie de conducteur interne (7, 8), avec une partie en forme de plaquettes (4, 5 ; 4', 5') qui est raccordée avec les côtés internes situés en regard du conducteur externe (2), caractérisé en ce que l'élément de résistance comporte au moins deux éléments en forme de plaquettes (4, 5 ; 4', 5') chacun prévus avec une fente centrale (12, 13) et qui sont disposés en forme de croix et peuvent s'emboîter dans ces fentes (12, 13).
  2. Elément d'atténuation ou de terminaison selon la revendication 1, caractérisé en ce qu'au moins une partie de conducteur interne (7, 8) fixe les deux éléments en forme de plaquettes (4, 5 ; 4', 5').
  3. Elément d'atténuation ou de terminaison selon la revendication 1 ou 2, caractérisé en ce que les deux éléments en forme de plaquettes (4, 5 ; 4', 5') sont emboîtés en croix.
  4. Elément d'atténuation ou de terminaison selon l'une des revendications 1 à 3, caractérisé en ce que les éléments en forme de plaquettes (4, 5 ; 4', 5') présentent respectivement, des deux côtés, des circuits (4b, 5b ; 4b', 5b') qui peuvent être introduits par sérigraphie ou photolithographie sur des plaquettes diélectriques (4a, 5a ; 4a' , 5a').
  5. Elément d'atténuation ou de terminaison selon la revendication 4, caractérisé en ce que l'élément de résistance (3, 3') comporte au moins huit circuits (4b, 4b ; 4b', 5b').
  6. Elément d'atténuation ou de terminaison selon l'une des revendications 1 à 5, caractérisé en ce qu'au moins une partie de conducteur interne (7, 8) est fendu sur une extrémité (7a, 8a), moyennant quoi la zone fendue est formée en section transversale de façon correspondante à la section transversale de l'élément de résistance (3, 3').
  7. Elément d'atténuation ou de terminaison selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de résistance (3, 3') s'engage dans l'encoche (6) de l'élément interne (2a) du conducteur externe (2) et se trouve centré dans cette encoche (6).
  8. Elément d'atténuation ou de terminaison selon l'une des revendications 1 à 7, caractérisé en ce que l'élément de résistance (3, 3') est raccordé sur le côté interne du conducteur externe (2) au moyen d'un assemblage par brasage.
  9. Elément d'atténuation selon l'une des revendications 1 à 8, caractérisé en ce qu'il constitue une partie ou un élément d'une chaîne de mesure, en particulier d'une chaîne de mesure coaxiale.
EP03793557A 2002-09-04 2003-08-29 Element d'attenuation ou de terminaison a structure coaxiale pour ondes electromagnetiques haute frequence Expired - Lifetime EP1535364B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH150702 2002-09-04
CH15072002 2002-09-04
PCT/CH2003/000590 WO2004023596A1 (fr) 2002-09-04 2003-08-29 Element d'attenuation ou de terminaison a structure coaxiale pour ondes electromagnetiques haute frequence

Publications (2)

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

Family

ID=31954548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793557A Expired - Lifetime EP1535364B1 (fr) 2002-09-04 2003-08-29 Element d'attenuation ou de terminaison a structure coaxiale pour ondes electromagnetiques haute frequence

Country Status (7)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4456067B2 (ja) * 2005-12-28 2010-04-28 ヒロセ電機株式会社 高周波素子
FR2918505B1 (fr) * 2007-07-03 2011-04-01 Radialla Attenuateur coaxial
DE102010045780A1 (de) * 2010-09-17 2012-03-22 Rohde & Schwarz Gmbh & Co. Kg Kalibriereinheit für ein Messgerät
CN109786913B (zh) * 2019-03-22 2023-09-01 西安雷航电子信息技术有限公司 一种基于薄膜电阻的射频同轴负载

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (ja) * 1985-05-17 1986-11-22 Mitsubishi Electric Corp 円偏波発生器
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

Also Published As

Publication number Publication date
WO2004023596A1 (fr) 2004-03-18
US7212079B2 (en) 2007-05-01
AU2003254692A1 (en) 2004-03-29
ATE390724T1 (de) 2008-04-15
HK1075134A1 (en) 2005-12-02
DE50309484D1 (de) 2008-05-08
EP1535364A1 (fr) 2005-06-01
US20060097817A1 (en) 2006-05-11

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