EP0612118B1 - Verfahren zur Vermeidung des elektrischen Übersprechens und Anordnung zur Durchführung des Verfahrens - Google Patents
Verfahren zur Vermeidung des elektrischen Übersprechens und Anordnung zur Durchführung des Verfahrens Download PDFInfo
- Publication number
- EP0612118B1 EP0612118B1 EP94102108A EP94102108A EP0612118B1 EP 0612118 B1 EP0612118 B1 EP 0612118B1 EP 94102108 A EP94102108 A EP 94102108A EP 94102108 A EP94102108 A EP 94102108A EP 0612118 B1 EP0612118 B1 EP 0612118B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- absorbing material
- partitions
- housing cover
- spacing
- 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
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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
Definitions
- the invention relates to an arrangement for avoiding the electrical crosstalk according to the preamble of the claim 1.
- the invention is particularly for the high and / or Maximum frequency range, especially for the frequency range greater than 1 GHz, usable.
- Circuit arrangements in this radio frequency (HF) range are often called Strip lines, e.g. Microstrip lines (Microstrip) executed.
- Strip lines e.g. Microstrip lines (Microstrip) executed.
- a substrate e.g. a ceramic substrate with the highest possible packing density electrical conductor tracks, e.g. Microstrips, and / or electrical active and / or passive components arranged.
- FIG. 1 several such substrates in a metallic housing arranged side by side.
- the substrates by a metallic (housing) partition, which in particular an electromagnetic shield between the substrates should separate.
- a Such housing is with a metallic housing cover locked.
- circuit and / or device arrangements for electrical reasons mechanically fixed to the housing, e.g. through screw, adhesive or welded connections. Latter e.g. made by laser welding.
- an electromagnetic damping material is attached inside the housing, e.g. inside of the housing cover, on a partition and / or on the inside of one Housing wall. This prevents spreading disturbing electromagnetic waves within a housing part, which e.g. a single circuit arrangement (Substrate) surrounds. This creates an annoying crosstalk (Coupling) within those on the substrate Circuit arrangement avoided.
- Such damping material often has to be attached to the inside of the housing, e.g. through an inexpensive gluing process.
- a such an approach also has the disadvantage that especially not sufficient for high-quality applications Resistance to temperature and / or aging present is because such an adhesive connection can become unpredictable Solve wise and annoying vagabonding of the damping material inside the housing.
- EP-A-0 329 050 describes an electrical high-frequency circuit arrangement, especially known for the GHz range.
- This consists of a pot-shaped housing, in which several RF circuit arrangements are arranged and which can be closed by a lid.
- the housing enables that between the RF circuitry Partition wall whose height is less than the height of the walls of the housing, can be clamped mechanically. Under the cover is secured against mechanical displacement plate-shaped HF absorber material attached, the in particular mechanical vibrations of the lid and the Partition should prevent.
- the invention is therefore based on the object of a generic Specify arrangement with which in less expensive and reliably in a permanently closed Avoid electromagnetic crosstalk will, with the in cheaper and more reliable Way a temperature and aging resistant electromagnetic Damping is achieved and with the under inexpensive Conditions a possible subsequent opening of the housing is made possible.
- a first advantage of the invention is that both in test and adjustment mode, that is, with removable and not yet finally attached housing cover one high RF crosstalk attenuation between adjacent RF circuit arrangements (Substrates) is achieved and that this high crosstalk attenuation even after final closing of the housing remains.
- a second advantage is that the damping material, which is also called absorber in the following, only in a reproducible way through an inexpensive mechanical clamp connection is fastened in the housing.
- a third advantage is that at least some Partitions with a small wall thickness are formed can, because between these partitions and the housing cover no mechanical connection is required. This saves material and / or weight reached.
- a fourth advantage is that with the housing, at least on the open side of the housing, that means the Housing cover facing side, relatively high mechanical Manufacturing tolerances are allowed, so that an inexpensive Manufacturing becomes possible.
- a fifth advantage is that the housing cover only on its outer edge for electromagnetic reasons must be connected to the housing, e.g. by a hermetically sealed (laser) welding process, provided that this is necessary. This makes it possible for a possible subsequent opening of the housing is only necessary these attachments, e.g. a (laser) weld seam, to remove what is inexpensive.
- a hermetically sealed (laser) welding process e.g. a hermetically sealed (laser) welding process
- a sixth advantage is that the absorber is mechanical can be trained so that this up to the substrate and / or certain components is sufficient so that these are additionally protected against mechanical shocks can be. With such an absorber is also an additional electromagnetic Damping of circuit parts possible.
- a seventh advantage is that the wall thickness of the Partition and / or RF channel walls can be made very thin can. On the one hand, this results in a considerable material and / or weight saving and on the other hand substantial increase in the packing density of the used RF components with high crosstalk attenuation.
- the housing shown there is e.g. from a material that can be welded by laser welding, e.g. Aluminum, has a height of approximately 20 mm as well a floor and / or outer wall thickness of approximately 2.5 mm.
- the housing is separated by partitions, e.g. a Have a wall thickness of approximately 1 mm in several chambers divided, in each of which a substrate, e.g. a ceramic substrate with a length in a range of approximately 5 mm to about 50 mm, a width of about 5 mm up to 50 mm and a thickness of about 0.5 mm and attached, e.g. by gluing and / or soldering.
- On at least one substrate is a circuit arrangement in Planar technology, e.g. Microstrip technology, for the HF range, e.g. the GHz range.
- Planar technology e.g. Microstrip technology
- the HF range e.g. the GHz range.
- the tolerance of this distance can advantageously chosen to be very large, e.g. ⁇ 0.1 mm, so that inexpensive production is possible becomes.
- the partition walls lowered into the housing becomes only one plate made of absorber material (FIG. 2). This also becomes an absorber plate called.
- the absorber plate has an area dimension, adapted to that of the inner surface of the housing is.
- the plate-shaped starting material for the absorber plate e.g. about 4 mm in thickness from an HF absorber material, e.g. in the GHz range an absorbent plastic material.
- This plate-shaped starting material is now processed in such a way e.g. preferably by milling with a electronically controlled milling machine (CNC milling machine), that the starting material in the area of the partitions (FIG. 2) only has a thickness of approximately 2 mm. This Thickness is slightly less than the distance already mentioned between the partitions and the housing cover.
- the thickness is a relatively large mechanical Tolerance of approximately ⁇ 0.1 mm permissible, so that the absorber plate can be produced very inexpensively.
- the milling pattern in the absorber plate that of the partitions e.g. Likewise are produced by a milling process. Because the milling pattern for the absorber plate corresponds to that Negative (complement) of that for the partitions.
- a such negative formation (complement formation) is however with a data processing system that is used to control a CNC milling machine already mentioned is needed, especially inexpensive and quick to implement. At a any necessary change in the arrangement of the partitions and / or their wall thickness can thus be almost automatic also changed the milling pattern for the absorber plate will.
- spacers are arranged between the housing cover facing flat surface of the absorber plate and the housing cover. These exist e.g. made of a rubber-elastic material and have one Thickness of about 1 mm. These spacers create at a closed housing cover (FIG. 2) a mechanical Preload in the absorber plate and therefore cause their precisely determinable location, which advantageously also obtained in the event of mechanical shock remains, so that the electronic damping properties remain.
- FIG. 2 is between the absorber plate and the Housing and the housing cover a relatively large air gap of approximately 0.1 mm. This leads in itself to unwanted electromagnetic crosstalk especially in the HF range. However, this effect occurs the invention surprisingly not a, because the long path between neighboring substrates and RF-like is heavily subdued. Despite the mentioned high mechanical Tolerances are therefore between the substrates in the GHz range a high crosstalk attenuation of more than 60 dB reachable.
- the invention is not based on the described embodiment limited, but applicable to others.
- the absorber plate Install partition walls made of absorber and / or insulation material. These partitions cause additional RF attenuation and / or a mechanical pressure on the substrates and / or the components attached to it, so dap pressed against the case back and thus against one mechanical shock loads are particularly protected.
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Casings For Electric Apparatus (AREA)
Description
Claims (5)
- Anordnung zur Vermeidung des elektrischen Übersprechens zwischen mehreren Schaltungsanordnungen, insbesondere für Schaltungen der Hochfrequenztechnologie, wobeidie Schaltungsanordnungen in einem gemeinsamen durch einen Gehäusedeckel allseits verschließbaren Gehäuse durch mindestens eine Trennwand voneinander getrennt angeordnet sind,zumindest in dem elektrisch zu bedämpfendem Bereich des Gehäuses die Höhe der Trennwände verringert ist, so daß zwischen diesen und dem metallischen Gehäusedeckel ein vorgebbarer Abstand entsteht,der Bereich ganzflächig durch plattenförmiges HF-Absorbermaterial (Absorberplate) abgedeckt ist unddas HF-Absorbermaterial bezüglich des Gehäuses und/oder des Deckels gegen mechanische Verschiebungen gesichert ist,daß die Dicke des HF-Absorbermaterial an sich größer ist als der Abstand zwischen den Trennwänden und dem Gehäusedeckel,daß in das HF-Absorbermaterial ein Vertiefungsmuster entsprechend demjenigen der Trennwände eingearbeitet ist,daß das HF-Absorbermaterial an den Vertiefungen eine Dicke besitzt, die kleiner gleich dem Abstand zwischen den Trennwänden und dem Gehäusedeckel ist,daß zwischen dem HF-Absorbermaterial und dem Gehäuse und/oder dem HF-Absorbermaterial und dem Gehäusedeckel ein Abstand kleiner als 0,2 λ eingehalten wird, wobei λ die Wellenlänge der zu dämpfenden Frequenz bedeutet unddaß zur mechanischen Sicherung des HF-Absorbermaterials zwischen diesem und dem Gehäusedeckel mindestens ein gummielastischer Abstandshalter eingefügt ist.
- Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Vertiefungsmuster mit einer elektronisch gesteuerten Fräsmaschine erzeugt ist.
- Anordnung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß das Vertiefungsmuster als Komplement (Negativ) zu dem Muster der Trennwände ausgebildet ist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein HF-Absorbermaterial gewählt ist, das für die zu bedämpfende Frequenz aus einem mechanisch bearbeitbarem gefülltem Kunststoffmaterial (Absorberrezeptur) besteht.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in dem HF-Absorbermaterial Vertiefungen, welche dem Muster der Trennwände entsprechen, angebracht sind und daß an dem HF-Absorbermaterial zusätzliche aus Absorbermaterial und/oder Isolationsmaterial bestehende Trenn- und/oder Stützwände angebracht sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4304656A DE4304656A1 (de) | 1993-02-16 | 1993-02-16 | Verfahren zur Vermeidung des elektrischen Übersprechens und Anordnung zur Durchführung des Verfahrens |
DE4304656 | 1993-02-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0612118A1 EP0612118A1 (de) | 1994-08-24 |
EP0612118B1 true EP0612118B1 (de) | 1998-05-27 |
Family
ID=6480588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94102108A Expired - Lifetime EP0612118B1 (de) | 1993-02-16 | 1994-02-11 | Verfahren zur Vermeidung des elektrischen Übersprechens und Anordnung zur Durchführung des Verfahrens |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0612118B1 (de) |
DE (2) | DE4304656A1 (de) |
ES (1) | ES2117979T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2470418C1 (ru) * | 2011-12-08 | 2012-12-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Миниатюрный полосковый резонатор |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5725928A (en) * | 1995-02-17 | 1998-03-10 | Velcro Industries B.V. | Touch fastener with magnetic attractant |
DE19609718C1 (de) * | 1996-03-13 | 1997-06-26 | Bosch Gmbh Robert | Hochfrequenzdichte Abschirmung |
DE19729671A1 (de) * | 1997-07-11 | 1999-01-14 | Alsthom Cge Alcatel | In einem Gehäuse angeordnete elektrische Schaltungsanordnung |
DE10213710A1 (de) * | 2002-03-27 | 2003-10-16 | Tesat Spacecom Gmbh & Co Kg | Absorbereinsatz |
RU2456719C1 (ru) * | 2011-06-07 | 2012-07-20 | Открытое акционерное общество "Федеральный научно-производственный центр "Нижегородский научно-исследовательский институт радиотехники" | Селективное устройство защиты на встречных стержнях |
CN109862734A (zh) * | 2018-12-27 | 2019-06-07 | 中国电子科技集团公司第十三研究所 | 电子装置封装结构 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1441114A1 (de) * | 1962-09-28 | 1969-05-22 | Siemens Ag | Elektrisches Geraet mit Abschirmung |
FR2627328B1 (fr) * | 1988-02-15 | 1990-11-30 | Alcatel Thomson Faisceaux | Circuit microelectronique |
JP2825670B2 (ja) * | 1990-12-14 | 1998-11-18 | 富士通株式会社 | 高周波回路装置のシールド構造 |
-
1993
- 1993-02-16 DE DE4304656A patent/DE4304656A1/de not_active Withdrawn
-
1994
- 1994-02-11 EP EP94102108A patent/EP0612118B1/de not_active Expired - Lifetime
- 1994-02-11 ES ES94102108T patent/ES2117979T3/es not_active Expired - Lifetime
- 1994-02-11 DE DE59406061T patent/DE59406061D1/de not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2470418C1 (ru) * | 2011-12-08 | 2012-12-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Миниатюрный полосковый резонатор |
Also Published As
Publication number | Publication date |
---|---|
EP0612118A1 (de) | 1994-08-24 |
DE59406061D1 (de) | 1998-07-02 |
DE4304656A1 (de) | 1994-08-18 |
ES2117979T3 (es) | 1998-09-01 |
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