EP0978151B1 - Anordnung zur frequenzselektiven unterdrückung von hochfrequenzsignalen - Google Patents
Anordnung zur frequenzselektiven unterdrückung von hochfrequenzsignalen Download PDFInfo
- Publication number
- EP0978151B1 EP0978151B1 EP98941227A EP98941227A EP0978151B1 EP 0978151 B1 EP0978151 B1 EP 0978151B1 EP 98941227 A EP98941227 A EP 98941227A EP 98941227 A EP98941227 A EP 98941227A EP 0978151 B1 EP0978151 B1 EP 0978151B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hood
- arrangement according
- substrate surfaces
- electrically conductive
- arrangement
- 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
Links
- 230000001629 suppression Effects 0.000 title claims description 10
- 239000000758 substrate Substances 0.000 claims description 38
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
- H01P5/107—Hollow-waveguide/strip-line transitions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
Definitions
- the present invention relates to an arrangement for Frequency-selective suppression of high-frequency signals according to the preamble of the main claim. It concerns in particular an arrangement for the suppression of unwanted signal frequencies within a transmission and / or Receiving device.
- auxiliary signals In transmitting and / or receiving facilities are the Generation or preparation of high-frequency signals frequently Auxiliary signals needed with the help of an oscillator be generated.
- An example of this is the frequency signal a local oscillator in one Receiving device according to the Superhet270.
- Such auxiliary signals usually should not or only in one tightly limited frequency range from the circuit component, for whom they are needed can exit.
- Shielding, shielding and filter media use to Avoiding escape of these auxiliary signals from the each circuit component, it is known, if necessary Shielding, shielding and filter media use. The better the suppression of unwanted Signal frequencies should be, the higher is usually the required effort.
- the arrangement comprises a substrate plate, on the one side the microstrip circuit and on the the other side of the ground plane are provided. Furthermore is a cavity resonator available. According to this font is the microstrip circuit using a Slot, which is provided in the ground plane, as well as one planar radiator, between the ground plane and the cavity resonator is arranged, coupled to the cavity resonator.
- a waveguide is out of the DE 42 41 635 A1. It goes the microstrip line in a unilateral suspended substrates line over and a above this line on the opposite side of the substrate space is expanded to a cross section, the corresponds to the cross section of the subsequent waveguide.
- Object of the present invention is to provide a generic Specify an arrangement for use in the Connection with microstrip circuits suitable is that has a high quality and at the same time easy and is inexpensive to produce. This task is done by an arrangement with. the characterizing features of the main claim solved. Advantage embodiments of the invention result from the subordinate claims.
- the Invention can be particularly advantageous in combination with a housing wall of a shielding housing can be realized, as shown by way of example in Figure 3.
- a filter assembly for use in a microstrip circuit which has a high quality and accordingly good for suppressing unwanted signal frequencies suitable is. It proves to be an advantage that by the substrate surfaces arranged separately from each other both a Gleichstromentkopplung as well as avoidance of direct overcoupling of surface waves is achieved. This contributes significantly to the good suppression of unwanted Signal frequencies at.
- the arrangement according to claim 5 and 6 are mechanical Tensions due to different Temperature expansions of the strip conductor substrate and the Hollow chamber can arise, reliably avoided. Furthermore the arrangement according to the invention is insensitive to tolerances during assembly and therefore requires no Adjustment. In addition, the arrangement according to the invention also insensitive to tolerances with regard to the substrate thickness the stripline circuit.
- the invention is that the substrate or the Stripline circuit only needs to be processed on one side. In comparison, it is in the arrangement according to the WO 92/13371, for example, necessary, a slot in the To introduce the ground plane of the strip conductor substrate, so that Here both sides of the substrate must be processed. The same applies to the transition to the suspended substrate line according to DE 42 41 635 A1.
- the mentioned Arrangement thus easy and inexpensive to implement and easy to produce even in large quantities.
- One very particular advantage of the invention results when the said arrangement in an existing shielding housing is integrated. This advantageous embodiment The invention is described in more detail in FIG.
- FIG. 1 shows a perspective view of a device according to the invention Arrangement in which a hood 6 for the better Drawn illustration is cut open.
- the hood 6 covered two separate substrate surfaces 2 and 3, which are arranged on a common carrier plate 1.
- On the substrate surfaces 2, 3 are not further here shown stripline circuits.
- Preferably owns the carrier plate 1 has an electrically conductive surface, at the same time also the ground plane for the not shown Stripline circuits on the substrate surfaces 2, 3 is.
- the Coupling connections work as radiator or antenna elements and may, as in the present example, be patch antenna elements or alternatively, for example as well Slot radiator or other radiator elements formed be.
- the separate arrangement of the substrate surfaces prevents that high frequency signals within the dielectric the substrate surfaces or on their surfaces of one Coupling connection to be transferred to the other directly.
- an electrically conductive plate 7 is provided between the two substrate surfaces 2, 3 preferably an electrically conductive plate 7 is provided. This fills the space between the substrate surfaces 2 and 3, of the Hood 6 is covered, approximately up to the height of the substrate surfaces over the support plate 1 from. It serves on the one hand as a bottom surface of one formed in connection with the hood 6 Hollow chamber 11 and is advantageously for this purpose electrically conductive connected to the hood 6.
- the plate 7 in addition to the Transmission of surface waves and in the dielectric the substrate surfaces propagatable waves of one Coupling connection to the other even more strongly prevented.
- the plate 7 forms a firm stop for the two Substrate surfaces 2.3, thus ensuring a simple Assembly in which the two substrate surfaces have a defined Have distance to each other.
- the plate 7 may be missing, the Hood 6 then preferably with the electrically conductive Surface of the support plate 1 electrically conductively connected is.
- the electrically conductive surface of the carrier plate 1 can also be in addition to the plate 7 with the hood 6 electrically be conductively connected.
- the hollow chamber 11 acts in a known manner as a cavity resonator, in the high-frequency signals by means of the coupling connections 4, 5 are on or coupled out.
- At 15 is one imaginary connecting line between the coupling terminals. 4 and 5 indicated.
- With 13 is a side wall of the hood. 6 designated according to a preferred embodiment of Invention is inclined obliquely over the coupling terminal 5.
- FIG. 2 shows the same arrangement as Figure 1, wherein the Hood 6 is now shown in a "glassy" representation.
- the hood 6 is made of a conductive Material and is therefore not transparent in the rule.
- 14 denotes a second side wall of the hood 6, in the same way as the side wall 13 here over the Coupling connection 4 is inclined.
- the inclined side walls 13, 14 are the side walls of the hood 6, which are transverse to the imaginary connecting line 15 run.
- With 8 and 9 are Passage openings in the hood 6 denotes, among which Feed lines to the coupling terminals 4, 5 out are.
- an air gap is designated, which according to a preferred embodiment of the invention, at least in sections between the hood 6 and the substrate surfaces 2 and 3, respectively can be present.
- the size or width of the air gap 12 results from the assembly of the fact that between the hood 6 and the substrate surfaces 2, 3 no mechanical connection or attachment is provided.
- the frequency-selective suppression of the invention Arrangement is based on the known mode of action of the cavity resonator. Such is known to be a high pass, in which only frequencies above a cutoff frequency propagate existent. The cutoff frequency of the high pass is due to the geometric dimensions of the hollow chamber 11 determined.
- the substrate surfaces 2, 3 is also prevented that High-frequency signals, one of the two coupling connections 4, 5 are supplied, largely unfiltered as a wave within the dielectric of the substrate surfaces or as Surface wave transmitted to each other coupling connection become. This blocking effect is by the preferred introduced electrically conductive plate 7 supports.
- the coupling connections are in the arrangement described here operated as antenna elements.
- the overcoupling of the transmitting high-frequency signals from one to the other Coupling connection 4, 5 is by the obliquely inclined side walls Supported 13, 14 according to the known laws of reflection.
- the possible air gap 12 between the hood and the Substrate can be chosen so that the manufacturing costs be minimized. This concerns above all the accuracy the assembly.
- the material of the hood 6 and the conductive Plate 7 and the conductive surface of the support plate. 1 has the highest possible conductivity to resistive losses to minimize the filter assembly largely.
- FIG. 3 shows a particularly advantageous embodiment of the Invention in which the inventive arrangement according to the Figures 1 and 2 in a bottom surface of a housing wall 10th a housing is integrated.
- the housing with the housing wall 10 is preferably a shield over a circuit component to be shielded in microstrip technology.
- the stripline circuit, not shown on the substrate surface 3 includes, for example an oscillator circuit for generating an auxiliary frequency in a receiving device of a motor vehicle radar system.
- this Oscillator frequency only the sixth harmonic needed. These is in the order of 77 GHz.
- the fundamental wave as well the lower harmonics are said to be due to electromagnetic Compatibility as completely as possible suppressed or shielded. To decouple the needed sixth harmonic is now the arrangement of the invention used.
- the oscillator circuit through the housing with the housing wall 10 shielded.
- the others in FIG. 3 The numbers used correspond to those of FIGS and 2.
- the Plate 7 an integral part of the carrier plate 1, i.e. she is integrally connected with this.
- the hood 6 then in the way in the Figures 1 and 2 shown, formed and as such a corresponding arrangement of two on separate substrate surfaces befindaji radiator elements set.
- the hood 6 also in a side surface or a ceiling surface of a housing or be introduced only a support wall.
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Claims (11)
- Anordnung zur frequenzselektiven Unterdrückung von Hochfrequenzsignalen, insbesondere zur Unterdrückung von unerwünschten Signalfrequenzen innerhalb einer Sendeoder Empfangseinrichtung, wobei die Anordnung umfaßt:eine Hohlkammer (11), welche wenigstens teilweise von elektrisch leitfähigen Wänden (6,7) begrenzt ist undKoppelanschlüsse (4,5) zur Ein- und zur Auskopplung der Hochfrequenzsignale in die bzw. aus der Hohlkammer (11),wobei die Koppelanschlüsse (4,5) in Streifenleitungstechnik ausgeführte Strahlerelemente sind,daß wenigstens zwei Strahlerelemente vorhanden sind, von denen wenigstens eins zur Einkopplung und wenigstens ein anderes zur Auskopplung der Hochfrequenzsignale vorgesehen ist,daß die wenigstens zwei Strahlerelemente (4,5) auf voneinander getrennten Substratflächen (2,3) ausgebildet sind,daß die voneinander getrennten Substratflächen (2,3) auf einer gemeinsamen Trägerplatte (1) angeordnet sind unddaß die Hohlkammer von einer Haube (6) gebildet ist, die derart auf oder über der Trägerplatte (1) angeordnet ist, daß sie die Strahlerelemente (4,5) überdeckt.
- Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Trägerplatte (1) eine elektrisch leitfähige Oberfläche besitzt und daß die Haube (6) mit der elektrisch leitfähigen Oberfläche der Trägerplatte elektrisch leitfähig verbunden ist.
- Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine elektrisch leitfähige Platte (7) zwischen den voneinander getrennten Substratflächen (2,3) vorhanden ist und daß die elektrisch leitfähige Platte (7) mit der Haube (6) elektrisch leitfähig verbunden ist.
- Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die elektrisch leitfähige Platte (7) den Raum zwischen den Substratflächen (2,3), der von der Haube (6) überdeckt ist, bis zur Höhe der Substratflächen über der Trägerplatte (1) weitgehend ausfüllt.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Haube (6) ohne eine direkte Befestigung an den Substratflächen (2,3) über diesen angeordnet ist.
- Anordnung nach Anspruch 5, dadurch gekennzeichnet, daß zwischen der Haube (6) und den Substratflächen (2,3) wenigstens abschnittsweise ein Luftspalt (12) vorhanden ist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Haube (6) Durchlaßöffnungen (8,9) aufweist, unter denen Zuleitungen zu den Strahlerelementen (4, 5) durchgeführt sind.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Seitenflächen (13,14) der Haube (6), welche quer zu einer gedachten Verbindungslinie (15) zwischen den wenigstens zwei Strahlerelementen (4,5) verlaufen, schräg über die Strahlerelemente geneigt sind.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Haube (6) in eine Wand (10) eines Gehäuses integriert ist (Fig. 3).
- Anordnung nach Anspruch 9, dadurch gekennzeichnet, daß die Haube (6) in eine Bodenfläche einer Gehäusewand (10) eines Abschirmgehäuses integriert ist.
- Verwendung einer Anordnung gemäß einem der vorhergehenden Ansprüche, insbesondere gemäß Anspruch 10, in einem Kraftfahrzeug-Radarsystem zur Unterdrückung und/oder Abschirmung unerwünschter Hochfrequenzsignale.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757892 | 1997-12-24 | ||
DE19757892A DE19757892A1 (de) | 1997-12-24 | 1997-12-24 | Anordnung zur frequenzselektiven Unterdrückung von Hochfrequenzsignalen |
PCT/DE1998/001715 WO1999034474A1 (de) | 1997-12-24 | 1998-06-23 | Anordnung zur frequenzselektiven unterdrückung von hochfrequenzsignalen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0978151A1 EP0978151A1 (de) | 2000-02-09 |
EP0978151B1 true EP0978151B1 (de) | 2005-03-23 |
Family
ID=7853395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98941227A Expired - Lifetime EP0978151B1 (de) | 1997-12-24 | 1998-06-23 | Anordnung zur frequenzselektiven unterdrückung von hochfrequenzsignalen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6255745B1 (de) |
EP (1) | EP0978151B1 (de) |
JP (1) | JP3892051B2 (de) |
DE (2) | DE19757892A1 (de) |
WO (1) | WO1999034474A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10243670B3 (de) * | 2002-09-20 | 2004-02-12 | Eads Deutschland Gmbh | Hohlleiterfilter |
DE112008001621T5 (de) | 2007-06-14 | 2010-04-22 | Kyocera Corp. | Gleichstromsperrschaltung, Hybridschaltungsvorrichtung, Sender, Empfänger, Sender-Empfänger und Radarvorrichtung |
DE102019122952B4 (de) * | 2019-08-27 | 2022-07-14 | Tdk Electronics Ag | HF-dichtes Schaltinterface, Anordnung und geschirmter Raum |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4211987A (en) * | 1977-11-30 | 1980-07-08 | Harris Corporation | Cavity excitation utilizing microstrip, strip, or slot line |
DE3426565A1 (de) * | 1984-07-19 | 1986-01-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Kontaktfreie verbindung fuer planare leitungen |
US4796079A (en) * | 1984-07-25 | 1989-01-03 | Rca Licensing Corporation | Chip component providing rf suppression |
JPS62183201A (ja) * | 1986-02-07 | 1987-08-11 | Hitachi Ltd | 高周波分配合成装置 |
US4994775A (en) * | 1989-10-23 | 1991-02-19 | Valentine Research, Inc. | High-pass filter for microstrip circuit |
FI87409C (fi) | 1991-01-17 | 1992-12-28 | Valtion Teknillinen | Anordning och foerfarande foer koppling av en mikrolamellkrets till en haolrumsresonator |
JP3101460B2 (ja) * | 1992-04-03 | 2000-10-23 | 三洋電機株式会社 | 誘電体フィルタおよびこれを用いた分波器 |
DE4241635C2 (de) | 1992-12-10 | 1994-11-10 | Ant Nachrichtentech | Übergang von einer Microstrip-Leitung auf einen Hohlleiter |
US5506553A (en) * | 1993-10-22 | 1996-04-09 | Murata Manufacturing Co., Ltd. | High-frequency filter |
US5594397A (en) * | 1994-09-02 | 1997-01-14 | Tdk Corporation | Electronic filtering part using a material with microwave absorbing properties |
JPH0923104A (ja) * | 1995-07-04 | 1997-01-21 | Yokowo Co Ltd | フィルタ回路を含む回路構造 |
EP0843903A1 (de) * | 1996-06-07 | 1998-05-27 | Koninklijke Philips Electronics N.V. | Empfänger mit streifenleitungsfilter sowie streifenleitungsfilter |
US5900796A (en) * | 1997-02-26 | 1999-05-04 | Fair-Rite Products Corporation | Electric noise suppressor |
-
1997
- 1997-12-24 DE DE19757892A patent/DE19757892A1/de not_active Ceased
-
1998
- 1998-06-23 WO PCT/DE1998/001715 patent/WO1999034474A1/de active IP Right Grant
- 1998-06-23 JP JP53436499A patent/JP3892051B2/ja not_active Expired - Fee Related
- 1998-06-23 EP EP98941227A patent/EP0978151B1/de not_active Expired - Lifetime
- 1998-06-23 DE DE59812680T patent/DE59812680D1/de not_active Expired - Fee Related
-
1999
- 1999-06-23 US US09/308,434 patent/US6255745B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6255745B1 (en) | 2001-07-03 |
JP2001513307A (ja) | 2001-08-28 |
WO1999034474A1 (de) | 1999-07-08 |
DE19757892A1 (de) | 1999-07-01 |
DE59812680D1 (de) | 2005-04-28 |
JP3892051B2 (ja) | 2007-03-14 |
EP0978151A1 (de) | 2000-02-09 |
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