EP1132995B1 - Réseau d'équilibrage - Google Patents

Réseau d'équilibrage Download PDF

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Publication number
EP1132995B1
EP1132995B1 EP01301686A EP01301686A EP1132995B1 EP 1132995 B1 EP1132995 B1 EP 1132995B1 EP 01301686 A EP01301686 A EP 01301686A EP 01301686 A EP01301686 A EP 01301686A EP 1132995 B1 EP1132995 B1 EP 1132995B1
Authority
EP
European Patent Office
Prior art keywords
lines
symmetrical connection
gate
balun
symmetrical
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
EP01301686A
Other languages
German (de)
English (en)
Other versions
EP1132995A1 (fr
Inventor
Hardial Dr. Gill
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.)
Telent GmbH
Original Assignee
Marconi Communications GmbH
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 Marconi Communications GmbH filed Critical Marconi Communications GmbH
Publication of EP1132995A1 publication Critical patent/EP1132995A1/fr
Application granted granted Critical
Publication of EP1132995B1 publication Critical patent/EP1132995B1/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
    • 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

Definitions

  • the present invention relates to a balun, consisting of side-by-side, coupled planar lines with an unbalanced port and two symmetrical ports.
  • Baluns represent in a known manner transitions between balanced and unbalanced transmission lines.
  • a symmetrical line is when a signal transmitted over it does not have the ground as a reference potential.
  • an unbalanced transmission line is connected on one side to ground, so that a signal transmitted via it has the ground as a reference potential.
  • Baluns of this kind are e.g. used at the inputs and outputs of Doppelumbletaktmischern or modulators etc.
  • balun An initially set forth, consisting of four mutually coupled planar lines existing balun is known from DE 197 29 761 A1.
  • This balun consists of two 3db couplers, each with two planar lines coupled over a length of ⁇ / 4.
  • They who both couplers are in the form of a two-pole bandpass filter, one configured in an open circuit configuration and the other in a shorted circuit configuration.
  • the two quarter wavelength couplers are connected together to form a 3-port balun having one unbalanced signal port and two balanced port ports.
  • the open circuit configuration line coupler the opposite ends of the two lines are idle. Another end of the two lines serves as a balanced connection.
  • the opposite end of the other line is connected to one end of the shorted circuit configuration line coupler.
  • the balancing member is constructed in multi-layer technology. The production cost is therefore large, which is unfavorable for mass production.
  • balun with a single unbalanced and a single balanced port gate described.
  • the balun has three juxtaposed strip-shaped lines. One end of the middle line forms the unbalanced port gate, while the other end terminates with an idle state.
  • the outer lines are each connected at their ends via vias to ground and interrupted at half the length. Opposing portions of the outer leads are interconnected across the middle lead bridges and form the single terminal port.
  • US-A-5 428 838 discloses a monolithic diode-star mixer having an RF balun and balun for a local oscillator and in which a center microstrip for each of the baluns is disposed between parallel transmission striplines in a common plane.
  • the RF balun and balun for the local oscillator are arranged in a ground plane so that the baluns form a right angle relative to each other.
  • the middle microstrips are connected in the ground plane.
  • a central ring conductor allows the diodes associated with the mixer to be connected to the transmission lines and a common connection point.
  • an intermediate frequency transmission line is connected to the conductive ring.
  • the invention has for its object to provide a space-saving and easily manufacturable Symmertrierglied.
  • Such a balun is constructed according to the features of claim 1 as follows. These are three side-by-side, coupled planar cables available. One end of the middle of the three lines forms the unbalanced connection gate, wherein the adjacent ends of the two outer lines are at ground potential. The two other ends of the outer lines are also at ground potential, and the middle line ends there with an open circuit. Each of the two outer lines is interrupted at half the length and has at this point two connections for a symmetrical connection port. This creates a broadband power divider and a transition from an unbalanced to two balanced transmission lines. This balun has a high bandwidth and is very low loss. There is also a high decoupling between the two symmetrical connection ports.
  • the total coupling length of the three lines corresponds approximately to half the average operating wavelength of the balun.
  • the balancing member shown in the drawing consists of three adjacent inductively coupled planar lines 1, 2 and 3, which are therefore guided in a curved shape to keep the extent of the balun as low as possible.
  • the total coupling length of the three lines 1, 2 and 3, which are arranged together on a substrate side, corresponds approximately to half the average operating wavelength of the balun.
  • One end 4 of the middle line 3 of the three lines 1, 2, 3 forms the unbalanced connection port TU.
  • the lying next to this end 4 of the middle line 3 ends of the two outer lines 1 and 2 are at ground potential.
  • the connection of these line ends with a arranged on the opposite side of the substrate ground lines is realized in a known manner by means of vias 5 and 6 in the substrate.
  • each end of the two outer leads 1 and 2 is provided with a via 5, 6.
  • the two other ends of the outer leads 1 and 2 are also connected to ground potential.
  • the ends of both outer leads 1 and 2 converge on a via 7 which produces contact with the ground surface on the back of the substrate.
  • the middle line 3 ends here with an idle.
  • the two outer lines 1 and 2 are interrupted.
  • the resulting from this interruption line ends 8 and 9 of the first outer line 1 form the first symmetrical connection port TS1
  • the resulting by the interruption of the second outer line 2 line ends 10 and 11 form the second symmetrical connection port TS2.
  • the balun described above represents a very broadband 3-dB power divider, whose two connection gates TS1 and TS2 have a high mutual isolation.
  • the decoupled at the symmetrical connection ports TS1 and TS2 signals have almost the same amplitude and phase.

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Waveguides (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Carbon And Carbon Compounds (AREA)

Claims (2)

  1. Circuit d'équilibrage, comprenant des lignes planes (1, 2, 3) s'étendant les unes à côté des autres et couplées, avec une porte de raccordement asymétrique (TU) et deux portes de raccordement symétriques (TS 1 et TS2), dans lequel :
    - il est prévu trois lignes (1, 2, 3) s'étendant les unes à côté des autres,
    - une extrémité (4) de la ligne médiane (3) parmi les trois lignes (1, 2, 3) forme la porte de raccordement asymétrique (TU), et les extrémités, situées à côté, des deux lignes extérieures sont appliquées au potentiel de masse (5, 6),
    - les deux autres extrémités des lignes extérieures sont appliquées au potentiel de masse (7) et la ligne médiane (3) se termine à cette extrémité en circuit ouvert, et
    - chacune des lignes extérieures (1, 2) est interrompue sur la moitié de la longueur, et chacune des lignes extérieures (1, 2) présente, aux emplacements où elle est interrompue, deux raccordements respectifs (8, 9, 10, 11) pour une porte de raccordement symétrique (TS1, TS2),
    caractérisé en ce que
    les lignes planes (1, 2, 3) sont guidées sous une forme arquée de telle manière que les tronçons des lignes planes (1, 2, 3) qui s'étendent dans la région entre les portes de raccordement symétriques (TS1, TS2) et la porte de raccordement asymétrique (TU), tout comme les tronçons des lignes planes (1, 2, 3) qui s'étendent dans la région entre les portes de raccordement symétriques (TS 1, TS2) et l'extrémité en circuit ouvert de la ligne médiane (3), sont réalisés chacun en forme de S, et en ce que les tronçons en forme de S de la ligne médiane (3) dans la région des portes de raccordement symétriques (TS1, TS2) se raccordent l'un à l'autre de manière à s'étendre en continu, de sorte que la ligne médiane (3) possède une forme en S double.
  2. Circuit d'équilibrage selon la revendication 1, caractérisé en ce que la longueur de couplage des trois lignes (1, 2, 3) correspond approximativement à la moitié de la longueur d'onde moyenne du circuit d'équilibrage en fonctionnement.
EP01301686A 2000-02-24 2001-02-23 Réseau d'équilibrage Expired - Lifetime EP1132995B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10008551 2000-02-24
DE10008551A DE10008551A1 (de) 2000-02-24 2000-02-24 Symmetrierglied

Publications (2)

Publication Number Publication Date
EP1132995A1 EP1132995A1 (fr) 2001-09-12
EP1132995B1 true EP1132995B1 (fr) 2006-09-06

Family

ID=7632178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01301686A Expired - Lifetime EP1132995B1 (fr) 2000-02-24 2001-02-23 Réseau d'équilibrage

Country Status (3)

Country Link
EP (1) EP1132995B1 (fr)
AT (1) ATE339017T1 (fr)
DE (2) DE10008551A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10026227A1 (de) * 2000-05-26 2001-12-06 Marconi Comm Gmbh Anordnung zum Transformieren von Übertragungsleitungsstrukturen und Mischer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5428838A (en) * 1993-07-13 1995-06-27 Trw Inc. Diode mixer implemented in a planar monolithic IC

Also Published As

Publication number Publication date
ATE339017T1 (de) 2006-09-15
DE10008551A1 (de) 2001-08-30
DE50110912D1 (de) 2006-10-19
EP1132995A1 (fr) 2001-09-12

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