EP0371157B1 - Transformateur de réseau - Google Patents

Transformateur de réseau Download PDF

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Publication number
EP0371157B1
EP0371157B1 EP88119827A EP88119827A EP0371157B1 EP 0371157 B1 EP0371157 B1 EP 0371157B1 EP 88119827 A EP88119827 A EP 88119827A EP 88119827 A EP88119827 A EP 88119827A EP 0371157 B1 EP0371157 B1 EP 0371157B1
Authority
EP
European Patent Office
Prior art keywords
substrate
line
strip conductors
flat sides
bridge
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
EP88119827A
Other languages
German (de)
English (en)
Other versions
EP0371157A1 (fr
Inventor
Ralph Dr.-Ing. Oppelt
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP88119827A priority Critical patent/EP0371157B1/fr
Priority to DE88119827T priority patent/DE3888185D1/de
Priority to JP01306357A priority patent/JP3120985B2/ja
Priority to US07/442,541 priority patent/US4992769A/en
Publication of EP0371157A1 publication Critical patent/EP0371157A1/fr
Application granted granted Critical
Publication of EP0371157B1 publication Critical patent/EP0371157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H01F2027/2809—Printed windings on stacked layers

Definitions

  • the invention relates to a line transformer that can be used in high-frequency technology, for example, for matching impedances.
  • the flat sides of a disk-shaped substrate provided as a dielectric are each provided with a conductor track structure.
  • a corresponding line transformer can be found in "Patent Abstract of Japan", Vol. 10, No. 129 (E-403) (2186), May 14, 1986 and in the corresponding JP-A-60/258911.
  • Transformers suitable for the area of low-frequency alternating currents generally contain a core made of ferromagnetic material and a primary and secondary winding, each with at least a few turns. The quadrupole thus formed is to change current and voltage in the desired manner. Such transformers are suitable for impedance transformation as long as the length of the conductor forming a winding is small compared to the wavelength. It is known that radio antennas are intended to transmit electromagnetic energy, ie any signals, undistorted even for very high frequencies. In broadband transmitters, therefore, both windings are coupled so closely that they form lines with a defined characteristic impedance and negligible radiation loss. Virtually any rational transmission ratio can be achieved with line transformers ("NTZ", 1966, number 9, pages 527 to 538).
  • inductors can also be designed as flat coils as so-called printed coils. They then consist of a conductor, for example in the form of a spiral, which is arranged on the surface of a flat body made of electrically insulating material. The opposite flat side of the insulating body can be provided with a large-area metallization (1987 IEEE MTT-S Int. Microwave Symp. Dig., Vol. 1, pages 123 to 126).
  • 4-port differential transformers are required in high-frequency technology. These 4-ports, often referred to as hybrid switching in low-frequency technology, must be designed as line transformers in order to achieve a wide bandwidth and to reduce throughput losses.
  • the two-pole line transformer which can be gathered from the "Patent Abstract of Japan" mentioned at the beginning contains a disk-shaped substrate with a central hole through which a core is to be inserted.
  • a single flat conductor track made of a copper foil is applied as a transformer turn on the two flat sides of the substrate.
  • the transformer turn can consist of a laminate of several such conductor tracks, which are insulated from one another.
  • the invention is based on the object of simplifying and improving the known line transformers, in particular a 4-port differential transformer be designed so that it behaves completely symmetrically to gates 3 and 4 from both gate 1 and gate 2.
  • This object is achieved according to the invention with the characterizing features of claim 1.
  • This embodiment of the line transformer using stripline technology is simple to manufacture and contains no ferromagnetic parts. It can thus also be used in strong magnetic fields, for example in the field of superconducting magnets, in particular in the basic field of an MRI scanner.
  • the mirror-symmetrical arrangement of the two parts of each of the conductor track structures gives symmetrical electrical properties.
  • the thickness of the substrate i.e. the distance between the two conductor track structures and the width of the stripline, the required impedance Z can be set.
  • the degree of coupling between the partial inductors is also reproducible.
  • FIG. 1 shows the low-frequency equivalent circuit diagram of a 4-port differential transformer.
  • Figures 2 and 3 show an embodiment of the conductor track structures according to the invention.
  • FIGS. 4 and 5 show a special embodiment of these conductor track structures.
  • the input terminal c and the associated ground connection form the gate 1.
  • the gate 2 is formed by the pair of terminals d and e.
  • the gate 3 is formed by the terminal b and the corresponding ground connection and the gate 4 by the terminal a and the associated ground connection.
  • Optimal decoupling of gates 3 and 4 and gates 1 and 2 is achieved with an impedance equal to the impedance Z at gates 3 and 4 and an impedance Z / 2 at gates 1 and 2.
  • This 4-port differential transformer As is known, can be produced as a line transformer in that a preferably ferromagnetic carrier 6 is wound with lines of predetermined impedance.
  • the use of ferromagnetic material causes corresponding additional losses in high-frequency alternating fields.
  • operation in strong static magnetic fields is not possible.
  • a line transformer in the embodiment according to the invention as shown in FIGS. 2 and 3 has these properties.
  • the 4-port differential transformer shown in Figure 1 is designed in stripline technology.
  • it contains on the upper flat side of a substrate 8 with a predetermined thickness of, for example, 0.8 mm and a predetermined relative dielectric number, which serves as a dielectric, a conductor track structure 10 with conductor tracks 16 to 19 made of electrically conductive material, preferably metal, in particular Copper, each consisting of a ring part, practically a half ring.
  • the substrate 8 can, for example, be made of plastic, preferably tetrafluoroethylene (Teflon®), or also of ceramic, for example aluminum oxide Al2O3.
  • the two strip lines 16 and 17 are arranged mirror-symmetrically to an axis of symmetry A, B. Concentric to these two strip conductors 16 and 17, two further strip conductors 18 and 19 are also arranged mirror-symmetrically to the axis of symmetry A, B.
  • the two strip conductors 16 and 19 are connected to one another by a line bridge 24, which can preferably be designed as a strip conductor of the same width.
  • the two ends of the strip conductors 17 and 18 are likewise connected to one another by a line bridge 25, which can then be designed, for example, as a wire bridge electrically insulated from the line bridge 24.
  • the ends a and b and d and e 'of the strip lines 16 and 17 or 18 and 19 on the surface of the substrate 8 are arranged opposite each other.
  • a structure of strip conductors 20 to 23 is arranged on the lower flat side of the substrate 8, which structure is designed in such a way that the strip conductors 20 to 23 are congruent when viewed from the upper flat side.
  • this conductor structure 11 which is not visible from the upper flat side and is therefore shown in dashed lines, two strip conductors 20 and 21 or 22 and 23 are also arranged mirror-symmetrically to the axis of symmetry A ', B'.
  • the axes of symmetry A, B and A'B ' lie on the two flat sides of the substrate 8 parallel to each other and opposite each other.
  • the ends of the strip conductors 22 and 21 and the ends of the strip conductors 20 and 23 are connected to each other by a bridge 26 and 27, respectively.
  • the line bridge 26 consists of a strip conductor, while the line bridge 27 is designed as a wire bridge that is electrically insulated from the bridge 26.
  • the connection d of the conductor track structure 10 on the upper flat side is connected by a cable bridge to the connection d 'of the conductor track structure 11 on the lower flat side. The same applies to the connections e 'and e.
  • line connections can be produced in a simple manner in that the substrate 8 is provided with a bore and an electrically conductive filling, for example made of solder, at the appropriate points. If a signal is fed into the gate 1 in this embodiment of a line transformer, this signal is distributed symmetrically to the gates 3 and 4. In the same way, a signal fed into gate 2 is distributed symmetrically to gates 3 and 4.
  • the two antenna gates can be connected, for example, to gate 1 of the receiver, to gate 2 of the transmitter and to gates 3 and 4 with the interposition of a 90 ° two-phase network.
  • conductor track structures 12 and 13 are arranged on the upper and lower flat side of the substrate, each consisting of strip conductors 31 to 36 and 37 to 42, respectively.
  • the conductor track structure 12 should be arranged on the upper and the conductor track structure 13 on the lower flat side of the substrate 8.
  • the strip conductors 31 and 32 as well as 33 and 34 and also 35 and 36 which consist of ring parts and are each arranged mirror-symmetrically to the axis of symmetry A, B, form concentric rings.
  • the strip conductors 31 and 34 are connected to one another at their right ends and the strip conductors 34 and 35 at their left ends by a line bridge 44 and 45, respectively, which are designed as strip conductors. These bridges 44 and 45 are each crossed by a further bridge 46 and 47, which the stripline 32nd and 33 or 33 and 36 connect to one another in an electrically conductive manner.
  • the ends a and b of the strip conductors 31 and 32 on the left are opposite to each other.
  • the ends of the strip conductors 35 and 36 face each other.
  • the two ends of the strip conductors 37 and 38 are provided with a bridge c in the conductor track structure 13 on the lower flat side of the substrate 8.
  • the strip conductors 39 and 42 are likewise connected to one another on the left-hand side by a line bridge 48, which preferably consists of a strip conductor.
  • the ends of the strip conductors 38 and 39 are electrically connected to one another on the right-hand side by a further line bridge 49.
  • the left ends of the strip conductors 40 and 41 are likewise connected to one another by a cable bridge 50, which can consist, for example, of a soldered wire which is insulated from the strip conductor bridge 48.
  • the ends of the strip conductors 37 and 40 are connected to one another on the right-hand side by a line bridge 51, which is insulated from the strip line bridge 49.
  • the ends d 'and e of the strip line 42 and 41 are electrically connected to the ends d and e' of the strip line 35 and 36 on the upper flat side.
  • This line connection can be produced in a particularly simple manner by contacting the substrate 8 at these ends, since the ends of the strip conductors are located at the same location on the opposite flat sides due to the congruent arrangement.
  • the embodiment with an odd number of rings ( Figures 4 and 5) has the advantage over the embodiment with an even number of rings ( Figures 2 and 3) that the pair of terminals d, e (gate 2 in Fig. 1) from the rest Gates is farther away.
  • a design of the conductor track structures was assumed, each of which practically consist of concentric semicircles, because rings have the greatest inductance with the shortest cable length, ie with minimal electrical losses.
  • other patterns can also be provided, which consist, for example, of ellipses or rectangles and in which the two halves of a conductor track structure are arranged symmetrically to a central axis on a flat side of the substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Near-Field Transmission Systems (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (4)

  1. Transformateur de ligne, dans lequel
    a) les faces planes d'un substrat (8) en forme de disque, prévu en tant que diélectrique, sont munies chacune d'une structure de bande conductrice (10,11),
    caractérisé par le fait que
    b) ces structures de bande conductrice (10,11) sont constituées chacune de conducteurs (16 à 23) concentriques en forme de bande ainsi que de plusieurs bornes (a,b,d,e',d',e) et de plusieurs ponts de liaison (24 à 27), les conducteurs en forme de bande (16 à 23) formant deux modèles coïncidant à recouvrement et étant superposés avec le substrat (8) servant de couche intermédiaire,
    c) les modèles (16,18;17,19 ou 20,22;21,23), qui font partie d'une structure de bande conductrice (10 ou 11), sont symétriques par rapport à un axe de symétrie (A,B ou A',B'), et
    d) les axes de symétrie (A,B et A',B') sont parallèles et sont en vis-à-vis sur chacune des faces planes du substrat (8).
  2. Transformateur de ligne suivant la revendication 1, caractérisé par le fait que les structures de bande conductrice (10 à 13) sont constituées essentiellement de demi-anneaux.
  3. Transformateur de ligne suivant la revendication 2, caractérisé par le fait que les demi-anneaux (31 à 36) forment, sur les deux faces planes du substrat (8), un nombre impair d'anneaux.
  4. Transformateur de ligne suivant l'une des revendications 1 à 3, caractérisé par le fait qu'il est prévu des trous métallisés servant de ponts de liaison, entre les extrémités (d,d'et e,e') opposées des conducteurs en forme de bande (19,22 et 18,23), sur les deux faces planes du substrat (8).
EP88119827A 1988-11-28 1988-11-28 Transformateur de réseau Expired - Lifetime EP0371157B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP88119827A EP0371157B1 (fr) 1988-11-28 1988-11-28 Transformateur de réseau
DE88119827T DE3888185D1 (de) 1988-11-28 1988-11-28 Leitungstransformator.
JP01306357A JP3120985B2 (ja) 1988-11-28 1989-11-24 線路変成器
US07/442,541 US4992769A (en) 1988-11-28 1989-11-28 Line transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88119827A EP0371157B1 (fr) 1988-11-28 1988-11-28 Transformateur de réseau

Publications (2)

Publication Number Publication Date
EP0371157A1 EP0371157A1 (fr) 1990-06-06
EP0371157B1 true EP0371157B1 (fr) 1994-03-02

Family

ID=8199606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119827A Expired - Lifetime EP0371157B1 (fr) 1988-11-28 1988-11-28 Transformateur de réseau

Country Status (4)

Country Link
US (1) US4992769A (fr)
EP (1) EP0371157B1 (fr)
JP (1) JP3120985B2 (fr)
DE (1) DE3888185D1 (fr)

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DE4037894A1 (de) * 1989-12-11 1991-06-13 Siemens Ag Kernspintomograph
KR960006848B1 (ko) * 1990-05-31 1996-05-23 가부시끼가이샤 도시바 평면형 자기소자
US5091708A (en) * 1990-07-30 1992-02-25 North American Philips Corporation Transmission line transformer
JP2941484B2 (ja) * 1991-05-31 1999-08-25 株式会社東芝 平面トランス
FR2699524B1 (fr) * 1992-12-21 1995-02-10 Rhone Poulenc Chimie Composition à base d'un oxyde mixte de cérium et de zirconium, préparation et utilisation.
US5451914A (en) * 1994-07-05 1995-09-19 Motorola, Inc. Multi-layer radio frequency transformer
US5917386A (en) * 1997-03-12 1999-06-29 Zenith Electronics Corporation Printed circuit transformer hybrids for RF mixers
DE19739962C2 (de) * 1997-09-11 2000-05-18 Siemens Ag Planare, gekoppelte Spulenanordnung
FR2772973B1 (fr) * 1997-12-23 2000-06-30 Sextant Avionique Bobinage pour transformateur planar
CA2342164A1 (fr) * 1998-08-21 2000-03-02 Marthinus Christoffel Smit Transformateur plan
SE9900852D0 (sv) * 1999-03-08 1999-03-08 Secheron Sa An electrical coil module, an electrical coil comprising such modules, an actuation mechanism including such a coil and a circuit breaker comprising such an actuation mechanism
DE19944741C2 (de) * 1999-09-17 2001-09-13 Siemens Ag Monolitisch integrierter Transformator
US6407647B1 (en) * 2001-01-23 2002-06-18 Triquint Semiconductor, Inc. Integrated broadside coupled transmission line element
TW578170B (en) * 2001-01-31 2004-03-01 Endpoints Technology Corp Inductor apparatus
DE60214280T2 (de) * 2001-05-24 2007-04-19 Nokia Corp. Induktive Anordnung auf einem Chip
DE10162263A1 (de) * 2001-12-18 2003-07-10 Infineon Technologies Ag Induktives Bauteil
US6806558B2 (en) 2002-04-11 2004-10-19 Triquint Semiconductor, Inc. Integrated segmented and interdigitated broadside- and edge-coupled transmission lines
US6714112B2 (en) * 2002-05-10 2004-03-30 Chartered Semiconductor Manufacturing Limited Silicon-based inductor with varying metal-to-metal conductor spacing
US20050077992A1 (en) * 2002-09-20 2005-04-14 Gopal Raghavan Symmetric planar inductor
US7011197B2 (en) * 2003-02-18 2006-03-14 Labout Andrew M Clutch control system and method
JP4507508B2 (ja) * 2003-05-08 2010-07-21 パナソニック株式会社 インダクタ装置およびその製造方法
US7283028B2 (en) * 2003-08-07 2007-10-16 Tdk Corporation Coil component
US6825749B1 (en) * 2004-01-26 2004-11-30 National Applied Research Laboratories National Chip Implementation Center Symmetric crossover structure of two lines for RF integrated circuits
US7272375B2 (en) * 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
US7786836B2 (en) * 2005-07-19 2010-08-31 Lctank Llc Fabrication of inductors in transformer based tank circuitry
EP1916677A1 (fr) * 2006-10-25 2008-04-30 Laird Technologies AB Transformateur et procédé de fabrication
TWI344656B (en) * 2007-07-13 2011-07-01 Via Tech Inc Inductor structure
KR101453071B1 (ko) * 2008-05-14 2014-10-23 삼성전자주식회사 트랜스포머, 밸룬 및 이를 포함하는 집적 회로
US20100090789A1 (en) * 2008-10-14 2010-04-15 Middle Atlantic Products, Inc. Method, system and transformer for mitigating harmonics
EP3770691A1 (fr) 2010-06-11 2021-01-27 Ricoh Company, Ltd. Dispositif de stockage d'informations, dispositif amovible, récipient de révélateur et appareil de formation d'image
JP5485807B2 (ja) * 2010-06-16 2014-05-07 日精株式会社 基板型アンテナ
JP5216938B2 (ja) * 2010-09-22 2013-06-19 パイオニア株式会社 非接触電力伝送用コイル
US20160064137A1 (en) * 2014-09-02 2016-03-03 Apple Inc. Capacitively balanced inductive charging coil

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Also Published As

Publication number Publication date
DE3888185D1 (de) 1994-04-07
JP3120985B2 (ja) 2000-12-25
US4992769A (en) 1991-02-12
JPH02184005A (ja) 1990-07-18
EP0371157A1 (fr) 1990-06-06

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