EP0616490B1 - Miniaturisierte elektronische Anordnung, insbesondere mit gyromagnetischem Effekt - Google Patents

Miniaturisierte elektronische Anordnung, insbesondere mit gyromagnetischem Effekt Download PDF

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Publication number
EP0616490B1
EP0616490B1 EP94400422A EP94400422A EP0616490B1 EP 0616490 B1 EP0616490 B1 EP 0616490B1 EP 94400422 A EP94400422 A EP 94400422A EP 94400422 A EP94400422 A EP 94400422A EP 0616490 B1 EP0616490 B1 EP 0616490B1
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EP
European Patent Office
Prior art keywords
electronic device
dielectric
circulator
access
dielectric layer
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EP94400422A
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English (en)
French (fr)
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EP0616490A1 (de
Inventor
Gérard Ernest Emile Forterre
Patrick Desmarest
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Tekelec Airtronic
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Tekelec Airtronic
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/38—Circulators
    • H01P1/383—Junction circulators, e.g. Y-circulators
    • H01P1/387—Strip line circulators

Definitions

  • the invention relates generally to a device electronic with gyromagnetic effect of the type described in the preamble of claim 1.
  • the present invention therefore aims to provide a electronic device of the type described above, which constitutes a very satisfactory solution to this problem.
  • an electronic device comprises the characteristics indicated in the characterizing part of claim 1.
  • EP-A-0 222 618 is already known use in a multi electronic device layers of a screen-printed dielectric deposited under form of a thick layer and in which are arranged patterns of electrical circuits connected by holes interconnection made in this layer. But document neither teaches nor suggests the application of such dielectric to an electronic effect device gyromagnetic having the structure described in the claim 1, and above all the possibility of obtaining, thanks to a screen-printing dielectric, devices ultra-miniaturized.
  • Figure 1 is a side, schematic and sectional view an ultra-miniature circulator according to the present invention.
  • Figure 2 is an exploded view, in perspective and more large scale of the part of the circulator of the figure 1, which is indicated in II in this figure.
  • Figure 3 is a partial sectional view and shows the parts of Figure 2, in the assembled state.
  • Figure 4 is a schematic view and to a larger scale of patterns of electrical circuit elements which constitute the inductors of the circulator indicated in IV A and B in Figure 2.
  • Figure 5 shows schematically the structure of a four-door circulator.
  • Figures 6a, b, c and 7a, b, c show two modes of connection of a circulator according to the invention on a support substrate, figure a being each time a view from above, figure b a side view with partial breakout in the direction of arrow B of figure a, figure c an enlarged view of detail C in figure b.
  • Figure 8 shows the equivalent electrical diagram of a circulator with localized parameters.
  • Figure 9 is a sectional view at the plane indicated by line IX-IX of Figure 10 comprising the upper circuit pattern, with pullout partial, but shows in hatched form parts of the lower circuit pattern, the dielectric not being particularly represented so as not to complicate the understanding of the figure.
  • Figure 10 is a sectional view along the line X-X of figure 8, with cutaway, through the multilayer structure of the circulator.
  • Figure 11 is a sectional view along the line XI-XI, with cutaway of Figure 9, through the multilayer structure of the circulator.
  • such a device comprises essentially, in a preferred embodiment of the invention, substrates lower 1 and upper 2 made of ferrite, which are produced in the form of plates substantially rectangular in shape and whose exterior surfaces are metallized by depositing metallic layers 3 and 4, a layer 6 of a material dielectric which is sandwiched between the two substrates 1 and 2, a permanent magnet 7 which is placed on the metallized upper surface of the substrate upper 4, as well as a metal cylinder head 8 which encloses the assembly formed by the stacking of the two substrates, the dielectric layer and the magnet, to the way of a case and whose bottom edge is connected to the metal layer 3 of the lower substrate which is made so as to constitute the sole of the device.
  • the inner surface 10 of the lower substrate 1 carries a first pattern 11 of electrical circuit elements formed by metal tracks indicated in 12. The height of these tracks is exaggerated in the figure, for facilitate understanding of the invention.
  • the dielectric layer 6 is shown as being composed of two elementary layers 6a and 6b.
  • the layer 6a which is placed on the surface 10 of the lower substrate 1 and on the circuit pattern electric 11 carries on its upper surface 14 a second pattern of electrical circuit elements 15 also formed by metal tracks indicated in 17, the height of which is exaggerated in the figure.
  • the second elementary dielectric layer 6b is intended to cover this pattern with electrical circuits 15 while adhering to the bottom surface of the substrate higher 2.
  • the second pattern of electrical circuits 15 is embedded in the dielectric layer 6.
  • the two patterns of electrical circuits 11 and 15 each constitute one half of the entire device of the three inductors or chokes, known in itself, of the circulator which are angularly offset the relative to each other, at an angle of 120 °.
  • the two halves 11 and 15 of the inductance device are electrically connected by connections shown in 19 in Figure 3 which extend through the dielectric layer, perpendicular to the plane of installation of the patterns of circuits.
  • Figure 4 shows on a larger scale the configuration of the three inductors which carry the references 20 to 22. In this figure, the elements of inductors that are part of the circuit pattern lower 11 are hatched. The elements that are part of the top motif 15 were left blank. We notes that, in the central part, the two motifs 15 and 11 are electrically interconnected by six connections 19.
  • the layers 3 and 4 are electrically connected to each other the other by three electrical connections 24 which perpendicularly pass through the two substrates 1 and 2 and the dielectric layer 6. These connections 24 are arranged in a triangular configuration. Each inductor is electrically connected at one end, at 25 at connections 24 the other end 26 being connected to external connection access lines 27 of the circulator.
  • the structure which has just been described could be produced in an ultra-miniaturized form with dimensions for example of the order of mm, thanks to the use of a particular dielectric material 6, namely a new ink dielectric serigravable, that is to say serigraphable, then etchable by chemical process after exposure, for example such as that marketed by the company JOHNSON-MATTHEY under the name JM TC 110.
  • the dielectric constituted by this ink has a relative permittivity of 3.9 to 4.2 (based on silica grains) and a loss tangent of 5.10 -5 to 1 GHZ and 1.10 -3 to 10 GHz.
  • This dielectric paste enables layers of thickness equal to or greater than 7 ⁇ m to be produced.
  • the dielectric layer 6 is thus possible to produce the dielectric layer 6 as a thick layer, which makes it possible to reduce the parasitic capacitance caused by the patterns of electrical circuits of the inductors and thus to increase the natural frequency of the gyrator device formed by all of the substrates and the dielectric. .
  • This serigraphable dielectric ink allows the realization of metallized holes of small diameters and high precision through the dielectric layer 6.
  • the metallization of the holes is carried out by serigravure.
  • the holes 24 with a diameter of the order of 300 to 600 ⁇ m are advantageously made by laser.
  • This dielectric layer made of a serigraveable material, good quality, both mechanical, i.e. ensuring good flatness of surfaces, that microwave frequencies loss angle perspective, allowed no only to minimize the dimensions of the circulator, but also to obtain a direct seal of the two ferrite plates, which leads to a circulator without air gap. Since the dielectric is laid in the form of a layer, the frequency tuning capabilities normally produced in the form of discrete capacitors, can be done inside the circulator, using the dielectric of the layer 6 as the dielectric of these capacitors. The removal of external capacitors contributes thus considerably to the reduction of the dimensions of the circulator.
  • the miniaturized structure of the circulator presents the symmetry that emerges from the figures.
  • the absence of air in the structure of the circulator still has the advantage considerable that the magnetic circuit does not understand a minimum of residual non-magnetic air gap, so that the pump can understand only one single polarization magnet, more easily shieldable, as shown in figure 1.
  • Figure 5 illustrates the technology of a circulator-isolator four-door which consists of two circulators according to figures 2 to 4 which have a hole metallized common ground return and so can be arranged in the housing 8 sufficiently close to each other to be able to operate with the same polarization magnetic field produced by a single magnet 8.
  • this four-way circulator three outputs are connected to access routes 27, two outputs indicated at 30 and 31 are connected by an internal connection 32.
  • a four-way circulator as shown in Figure 5 is simply constituted by the association judicious two three-way circulators, the whole being enclosed in the same case of weak dimensions.
  • the invention also makes it possible to transform a circulator three-way or four-way into an isolator in terminating one of the doors with impedance characteristic of the access line.
  • the circulator By ending the remaining output 33 with a charge adapted to the characteristic impedance of the line, the circulator becomes an isolator.
  • the charge is disposed between the access door 33 and the mass formed through ground holes 24.
  • the load can be consisting of two double impedance loads, set in series with each of the 24 metallized holes framing the access door considered as at 34 in the figure 5. In thick film technology, the load can be directly produced by an absorbent ink layer appropriately sized.
  • Figures 6 and 7 illustrate two connection modes from a circulator to external access lines 37.
  • the connection is made by thermocompressed tape or glue, while the connection according to figure 7 is made by connection by carry over to the surface.
  • the circulator indicated in 35 is placed in an orifice practiced in a substrate 36 and the access tracks 27 of the circulator are connected to the access lines exterior 37 by a ribbon 38 connected to runway 27 and to the access line 37 by thermocompression or bonding.
  • the circulator is placed on the support substrate indicated at 40 so that the metallized holes 24 whose end is surrounded and closed by a metal disc, that is to say a gold disc 41, by gluing or soldering indicated in 42 to an access line shown at 43.
  • Figure 8 shows the equivalent electrical diagram of a such a circulator with localized elements.
  • the part encircled constitutes the gyromagnetic system G comprising the three aforementioned inductors indicated by Lc.
  • capacity C1 which constitutes the capacity above-mentioned agreement as being integrated into the dielectric layer 6 and an impedance Z0 connected to the mass.
  • Z2 series bandwidth network and network Z3 parallel band widening For each access route there is also a Z2 series bandwidth network and network Z3 parallel band widening.
  • the mounted network in series in the access road includes a C2 capacity and an inductor L2 while the parallel network is formed by the capacities C3 and an inductance L3.
  • Figures 9 to 11 show the concrete implementation of C1 tuning capacitors and networks Z2 and Z3 widening as integrated elements to the multilayer structure of the circulator.
  • the circuit elements of figure 8 carry the same references to facilitate their identification. So we see that the access line 27 to the gyromagnetic device G comprises a first portion of access road 45 made in the plane of top motif 15 and ending with an enlargement 46 and a second portion of access line 47 which is found in the plane of the lower motif 11, has a width narrower than portion 45 and is connected to the corresponding door of the lower motif 11.
  • the Z3 bandwidth network includes, according to Figures 8 and 9 a portion of conductive track 49 deposited in the upper pattern plane 15. This portion of track is connected at one end to the portion of access road 45 and ends at the end free by widening 50.
  • a pattern element 51 is provided which is connected to the metal layer 52 covering the walls with a hole metallized 53 which electrically interconnects the upper and lower metallic layers 3 and 4 of the multilayer structure of the circulator of the same so that the metallized holes 24.
  • the elements 50, 51 constitute the capacity C3, while the portion of line 49 of smaller width forms the inductance L3.
  • impedance Z0 it can be made on one of the outer faces of the sandwich, according to a structure similar to that of impedance Z2 described above.
  • Figures 9 to 11 clearly illustrate the advantage of the multilayer structure proposed by the invention and using a dielectric which can be produced in the form of a thick layer 6 allowing to drown in this layer patterns of electrical circuits arranged at different levels and train inside this dielectric layer of circuit elements which in state of the art, are formed by components separated.
  • the lower circuit pattern 11 is directly deposited on the lower substrate in metallized ferrite 1.
  • a layer of dielectric as a varnish we could first make a layer of dielectric as a varnish and then deposit the electric pattern on this dielectric layer produced advantageously also in the form of a thick layer screen printable.
  • This layer indicated in lines interrupted at 55 in FIG. 2 improves the yield manufacturing and power handling of the circulator.
  • a circulator has been described particularly suitable for operating in the band 10 GHz, thanks to the use of a dielectric paste serigravable.
  • a dielectric paste serigravable Such a dielectric is necessary when the circulator must operate at very high frequencies up to 10 GHz.
  • the dielectric in one area somewhat lower frequency, for example in the 4 or 5 GHz band, just use a screen-printing dielectric, without providing constructive changes, with the exception of one adaptation of dimensions.
  • the dielectric is a dielectric capable of being applied as a thick layer.
  • a screen printing dielectric perfectly satisfies this requirement.
  • the dielectric be a low loss material, requirement than a screen-printed dielectric available in the trade can also fill. It is only when wish to obtain a device capable of operating at higher frequencies it should use a screen printable dielectric which is also etchable as in the example which has just been described in referring to the figures.
  • the invention as just described in referring to figures has many advantages major compared to the state of the art. She provides an ultra-miniaturized device and likely to operate at very high frequencies high. Circulators can thus be produced in the 10 GHz band, in particular thanks to the use of the serigravable dielectric paste applicable in the form a thick layer, making it possible to serigravure the electrical interconnections in the form metallized holes. Since the layer dielectric also serves as a means of sealing two substrates, in particular ferrite, we obtain a symmetrical multilayer structure without air gap and very reliable once the cooking operations completed and requiring only one magnet polarization. The "all ceramic, monobloc" structure is sintered at high temperature.
  • the invention makes it possible to obtain devices electric power transmission, effect gyromagnetic, such as circulators, isolators or filters that are ultra-miniaturized, can work at frequencies up to 10 GHz, while being likely to be manufactured at low cost and in collective technology.

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  • Non-Reversible Transmitting Devices (AREA)

Claims (14)

  1. Elektronische Vorrichtung mit gyromagnetischer Wirkung, wie ein Zirkulator, Isolator oder Filter, derjenigen Gattung mit einem unteren Substrat (1) und einem oberen Substrat (2), von denen wenigstens einer aus Ferrit ist, einer zwischen den beiden Substraten gelegenen Gesamtanordnung von metallischen Elementen von elektrischen Schaltungen und einem zur Erzeugung eines die beiden Substraten senkrecht durchsetzenden magnetischen Feldes bestimmten Dauermagnet (8), dadurch gekennzeichnet, daß die Gesamtanordnung von metallischen Elementen von elektrischen Schaltungen (11,15) einen mehrlagigen Aufbau aufweist, bei welchem die Schichten jeweils ein Muster von metallischen Elementen von elektrischen Schaltungen aufweisen und die Muster sich kreuzen, wobei sie durch einen dielektrischen Werkstoff (6) getrennt sind, daß dieser dielektrische Werkstoff (6) ein siebdruckbares Dielektrikum ist, das in der Gestalt einer dicken Schicht abgelagert ist, in welcher die Muster (11,15) von elektrischen Schaltungen (12,17) in verschiedenen Ebenen angeordnet und durch metallisierte Löcher (19) sehr kleiner Abmessung zur elektrischen Zusammenschaltungs-verbindung, die sich senkrecht zu den Ebenen in der dielektrischen Schicht (6) erstrecken, miteinander verbunden sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das siebdruckbare Dielektrikum ein siebstichbares Dielektrikum für einen Betrieb mit höheren Frequenzen ist.
  3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der untere Substrat (1) und der obere Substrat (2) auf ihren durch die Substrate (1,2) und die dielektrische Schicht (6) durchsetzende Zusammenschaltungslöcher (24) miteinander verbundenen Aussenflächen metallisiert sind.
  4. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die dielektrische Schicht (6) das Mittel zum dichten Anschluß des unteren Substrats (1) und oberen Substrats (2) bildet.
  5. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Kondensatore (C1) zur Abstimmung der Frequenz der Vorrichtung in die dielektrische Schicht (6) eingegliedert sind.
  6. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie Bandverbreiterungsimpedanzen (Z0, Z2, Z3), die in den mehrlagigen Aufbau eingegliedert sind, aufweist, wobei eine Induktanz durch einen leitenden Spurteil (47, 49) vorbestimmter Breite gebildet wird und ein Kondensator durch zwei übereinander angeordnete leitende Elemente (46;50) gebildet wird, in den beiden verschiedenen elektrischen Schaltungsmustern (11,15) unter Zwischenschaltung des Dielektrikums der dielektrischen Schicht (6).
  7. Elektronische Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß eine in einer Zugangsbahn (27) in Reihenschaltung angeordnete Verbreiterungsimpedanz (Z2) zwei in verschiedenen Musterebenen (11,15) angeordnete Bahnabschnitte unterschiedlicher Breite umfaßt, von denen der eine die Induktanz bildet und deren in der dielektrischen Schicht übereinander angeordneten angrenzenden Enden (46, 48) den vorgenannten Kondensator (C2) bilden.
  8. Elektronische Vorrichtung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß eine in einer Zugangsbahn (27) parallel geschaltete Bandverbreiterungsimpedanz (Z3) einen leitenden Spurteil (49) geeigneter Breite umfaßt, um die Induktanz (L3) zu bilden, die in einer der beiden elektrischen Musterebenen angeordnet ist und mit einem Ende an den Zugangsbahnabschnitt angeschloßen ist und dessen anderes Ende (50) sich oberhalb eines in der anderen elektrischen Musterebene angeordneten und mit einem metallisierten Loch (53) zur Zusammenschaltung der Metallisierungsschichten (3,4) der beiden Substrate (1,2) verbundenen leitenden Elementes (51) befindet, wobei das Ende (50) und das Element (51) den Kondensator (C3) der Impedanz bilden.
  9. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß, wenn sie eine Vorrichtung mit gyromagnetischer Wirkung bildet, sie nur einen einzigen oberhalb des vorgenannten mehrlagigen Aufbaues in einem das Joch des magnetischen Kreis bildenden metallischen Gehäuse (8) angeordneten Polarisierungsmagnet (7) aufweist.
  10. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß, um einen Zirkulator mit vier Toren zu bilden, zwei Zirkulatore mit drei Toren nebeneinander unter Verwendung eines selben metallisierten Loches (24) als elektrische Verbindung der Massenebenen, nebeneinander angeordnet sind.
  11. Elektronische Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie geeignet ist, an einem Träger angeordnet und mit äusseren Zugangsleitungen (37) über thermokomprimierte Bänder oder durch Klebstoff durch Flächenübertragung verbunden zu werden.
  12. Elektronische Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die beiden Substrate (1,2) Ferrite sind.
  13. Elektronische Vorrichtung nach einem der Ansprüche 3 bis 12, dadurch gekennzeichnet, daß ein Zirkulator mit drei oder vier Zugangstoren in einen Isolator umwandelbar ist und daß das Umwandlungsmittel eine an die Impedanz der Zugangsleitungen angepaßte Last (34) ist, die zwischen dem zu schließenden Zugangstor (33) und wenigstens einem der Massenzusammenschaltungslöcher (24) angeordnet ist, wobei diese Last durch Siebdruck hergestellt werden kann.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Last durch zwei Lasten (34) doppelter Impedanz gebildet wird, die in Reihenschaltung mit jedem der das vorgenannte Zugangstor (33) umrahmenden Massenlöcher (24) angeordnet ist.
EP94400422A 1993-03-18 1994-02-28 Miniaturisierte elektronische Anordnung, insbesondere mit gyromagnetischem Effekt Expired - Lifetime EP0616490B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303155A FR2702920B1 (fr) 1993-03-18 1993-03-18 Dispositif électronique miniaturisé, notamment dispositif à effet gyromagnétique.
FR9303155 1993-03-18

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EP0616490A1 EP0616490A1 (de) 1994-09-21
EP0616490B1 true EP0616490B1 (de) 1998-08-26

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US (1) US5495210A (de)
EP (1) EP0616490B1 (de)
DE (1) DE69412674D1 (de)
FR (1) FR2702920B1 (de)

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JP3417370B2 (ja) * 1999-12-09 2003-06-16 株式会社村田製作所 非可逆回路素子及び通信機装置
JP2001320205A (ja) 2000-03-02 2001-11-16 Murata Mfg Co Ltd 非可逆回路素子および通信装置
JP2001332908A (ja) * 2000-03-13 2001-11-30 Murata Mfg Co Ltd 非可逆回路素子および通信装置
JP3736436B2 (ja) * 2001-01-25 2006-01-18 株式会社村田製作所 非可逆回路素子の製造方法
US6611180B1 (en) * 2002-04-16 2003-08-26 Raytheon Company Embedded planar circulator
JP3939622B2 (ja) * 2002-09-20 2007-07-04 アルプス電気株式会社 非可逆回路素子及びアイソレータ並びに非可逆回路素子の製造方法
US9214712B2 (en) 2011-05-06 2015-12-15 Skyworks Solutions, Inc. Apparatus and methods related to ferrite based circulators
JP6231555B2 (ja) 2012-05-18 2017-11-15 スカイワークス ソリューションズ，インコーポレイテッドＳｋｙｗｏｒｋｓ Ｓｏｌｕｔｉｏｎｓ，Ｉｎｃ． 挿入損性能が向上した接合型フェライトデバイスに関する装置および方法
WO2015053213A1 (ja) 2013-10-11 2015-04-16 三菱電機株式会社 非可逆回路
WO2022141036A1 (zh) * 2020-12-29 2022-07-07 深圳市华扬通信技术有限公司 一种超小型化微波旋磁环行器
CN115224010B (zh) * 2022-09-15 2022-12-02 河北美泰电子科技有限公司 集成旋磁器件的射频微***

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FR2702920A1 (fr) 1994-09-23
FR2702920B1 (fr) 1995-05-12
EP0616490A1 (de) 1994-09-21
DE69412674D1 (de) 1998-10-01
US5495210A (en) 1996-02-27

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