EP0317717B1 - Coupleur à lignes de branchement selon la technique planaire - Google Patents

Coupleur à lignes de branchement selon la technique planaire Download PDF

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Publication number
EP0317717B1
EP0317717B1 EP19880114732 EP88114732A EP0317717B1 EP 0317717 B1 EP0317717 B1 EP 0317717B1 EP 19880114732 EP19880114732 EP 19880114732 EP 88114732 A EP88114732 A EP 88114732A EP 0317717 B1 EP0317717 B1 EP 0317717B1
Authority
EP
European Patent Office
Prior art keywords
branch line
lines
line
connecting lines
planar
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
EP19880114732
Other languages
German (de)
English (en)
Other versions
EP0317717A3 (en
EP0317717A2 (fr
Inventor
Haoappa Dr.-Ing. Ashoka
Abdel-Messiah Dr.-Ing. Khilla
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik 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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Publication of EP0317717A2 publication Critical patent/EP0317717A2/fr
Publication of EP0317717A3 publication Critical patent/EP0317717A3/de
Application granted granted Critical
Publication of EP0317717B1 publication Critical patent/EP0317717B1/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
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
    • H01P5/22—Hybrid ring junctions
    • H01P5/227—90° branch line couplers

Definitions

  • the present invention relates to a planar branching coupler, consisting of two connecting lines each extending between two gates and a plurality of branching arms coupling these connecting lines to one another, some of the connecting services and branching arms being provided with open stub lines.
  • Branch couplers with two or three branch arms implemented in stripline technology are e.g. known from "Strip Lines" by H. Geschwinde and W. Krank, 1960, pp. 79-85.
  • a branching coupler of the type set forth in the opening paragraph is from PATENT ABSTRACTS OF JAPAN, Volume 9, No. 43 (E-298) [1766], February 22, 1985; & JP-A-59 182 601 (FUJITSU K.K.) 17-10-1984.
  • the connecting lines and branching arms are provided with stub lines in order to achieve a broadband transmission characteristic in a frequency range from 4 to 8 GHz.
  • the conductor widths required for this are so large that they can be manufactured without any problems.
  • planar branching coupler for the branching arms or connecting lines requires relatively low wave resistances (e.g. 35.4 ohms)
  • conductor widths are required which are very large, especially for waves in the mm-wave range.
  • the conductor width would correspond to an operating frequency of 50 GHz, for example a 35.4 ohm line on a 0.254 mm thick alumina substrate about a quarter wavelength.
  • a line that is extremely wide in relation to the transmitted wavelength has the disadvantage that undesired higher wave modes can spread on it.
  • the invention is based on the object of specifying a planar branching coupler of the type mentioned at the outset, which is designed in such a way that, particularly when operating in the mm-wave range, as far as possible no disturbing higher wave modes can occur on the lines.
  • the figure shows a planar branching coupler, consisting of two connecting lines VL1 and VL2 extending between gates 1 and 2 and gates 3 and 4, and two branching arms VA1 and VA2 coupling the two connecting lines together.
  • the connecting lines VL1 and VL2 running between the branching points from which the branching arms VA1 and VA2 extend, and also the branching arms VA1 and VA3, are each dimensioned such that the waves propagating over them undergo a 90 ° phase rotation.
  • the lines of the branching arms VA1, VA2 for a characteristic impedance of approximately 50 ⁇ and the connecting lines VL1 and VL2 would have to be can be designed for a characteristic impedance of around 35 ⁇ .
  • a 35 ⁇ cable for example on a 0.254 mm thick aluminum oxide substrate, would require a conductor width of 0.46 mm at an operating frequency of 50 GHz. This is a conductor width that corresponds to almost a quarter wavelength at the high frequency of 50 GHz. Lines that are extremely wide relative to the wavelength allow the propagation of disturbing higher wave modems. According to the branching coupler shown in the figure, this disadvantage is avoided by the following measures.
  • the branch arms VA1, VA2 and the connecting lines VL1 and VL2 extending between them each consist of a line VA11, VA21, VL11, VL21 and an open branch line VA12, VA22, VL12, VL22 branching off from the center of this line. All these lines and stub lines are designed for a wave resistance that requires such a narrow conductor width that the propagation of higher wave modes is almost impossible.
  • each of the lines VA11, VA21, VL11 and VL21 and each of the open stub lines VA12, VA22, VL12 and VL22 is dimensioned to a characteristic impedance of 70 ⁇ .
  • all conductors on a 0.254 mm thick aluminum oxide substrate have a width of only 0.1 mm.
  • the individual conductors In order to achieve certain couplings between the gates 1 to 4 of the branching coupler, the individual conductors must also be dimensioned with respect to their lengths to corresponding values.
  • the individual conductors are of such lengths that in the branch arms VA1 and VA2 the stub lines VA12 and VA22 have a 29.8 ° phase shift and the sections of the lines VA11 and VA21 outgoing to both sides of the stub lines each have a 41st , 5 ° phase shift and that in the connecting lines VL1 and VL2 the stub lines VL12 and VL22 cause a 53.8 ° phase shift and the outgoing sections of the stub lines VL11 and VL21 each cause a 25 ° phase shift.
  • the branching coupler can be tuned in a very simple manner, so that, for a desired operating frequency, the e.g. Signal power fed in at gate 1 is divided equally between gates 2 and 4.

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Waveguides (AREA)

Claims (4)

  1. Coupleur de ramification planaire, comprenant deux lignes de liaison, s'étendant chacune entre deux portes, et plusieurs branches de ramification couplant ces lignes de liaison entre elles, ayant chacune une largeur de conducteur préfixée par les conditions de couplage requises, dans lequel plusieurs lignes de liaison et/ou branches de ramification sont pourvues de tronçons de ligne ouverts, caractérisé en ce que, pour éviter la propagation de modes d'ondes supérieurs, les lignes de liaison (VL1, VL2) et/ou les branches de ramification (VA1, VA2) sont pourvues, là où c'est nécessaire, d'un tronçon de ligne ouvert (VL12, VL22, VA12, VA22) pour limiter la largeur de conducteur.
  2. Coupleur de ramification planaire selon la revendication 1, caractérisé en ce que le tronçon de ligne (VA12, VA22, VL12, VL22) est dérivé du milieu de la ligne (VA11, VA21, VL11, VL21).
  3. Coupleur de ramification planaire selon la revendication 1 ou 2, caractérisé en ce que la ligne (VA11, VA21, VL11, VL21) et le troncon de ligne (VA12, VA22, VL12, VL22) dérivé d'elle présentent la même impédance caractéristique.
  4. Coupleur de ramification planaire selon une des revendications précédentes, caractérisé en ce que les tronçons de ligne (VA12, VA22, VL12, VL22) sont dimensionnés en longueur de manière qu'à la fréquence de fonctionnement utilisée, la puissance de signal injectée dans le coupleur de ramification soit répartie à parts égales sur deux portes de sortie.
EP19880114732 1987-11-26 1988-09-09 Coupleur à lignes de branchement selon la technique planaire Expired - Lifetime EP0317717B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740098 1987-11-26
DE19873740098 DE3740098C1 (de) 1987-11-26 1987-11-26 Planarer Verzweigungskoppler

Publications (3)

Publication Number Publication Date
EP0317717A2 EP0317717A2 (fr) 1989-05-31
EP0317717A3 EP0317717A3 (en) 1990-06-13
EP0317717B1 true EP0317717B1 (fr) 1993-06-16

Family

ID=6341334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880114732 Expired - Lifetime EP0317717B1 (fr) 1987-11-26 1988-09-09 Coupleur à lignes de branchement selon la technique planaire

Country Status (2)

Country Link
EP (1) EP0317717B1 (fr)
DE (1) DE3740098C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI586028B (zh) * 2015-04-10 2017-06-01 Nat Chin-Yi Univ Of Tech Hybrid branch coupler
TWI616023B (zh) * 2017-03-30 2018-02-21 國立勤益科技大學 固定傳輸線特性阻抗值任意輸出比枝幹耦合器
US10644375B1 (en) 2018-11-14 2020-05-05 Nanning Fugui Precision Industrial Co., Ltd. Branch-line coupler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI650899B (zh) * 2017-12-18 2019-02-11 國立勤益科技大學 混合式串接高頻信號分佈電路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1082782A (fr) * 1977-03-28 1980-07-29 Gordon P. Riblet Accouplement
JPS59182601A (ja) * 1983-03-31 1984-10-17 Fujitsu Ltd 分岐結合器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI586028B (zh) * 2015-04-10 2017-06-01 Nat Chin-Yi Univ Of Tech Hybrid branch coupler
TWI616023B (zh) * 2017-03-30 2018-02-21 國立勤益科技大學 固定傳輸線特性阻抗值任意輸出比枝幹耦合器
US10644375B1 (en) 2018-11-14 2020-05-05 Nanning Fugui Precision Industrial Co., Ltd. Branch-line coupler
TWI700858B (zh) * 2018-11-14 2020-08-01 新加坡商雲網科技新加坡有限公司 分支線耦合器

Also Published As

Publication number Publication date
DE3740098C1 (de) 1989-02-02
EP0317717A3 (en) 1990-06-13
EP0317717A2 (fr) 1989-05-31

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