EP0089083B1 - Additionneur-diviseur de puissance à large bande pour circuit hyperfréquence et transformateur d'impédance réalisé à partir de cet additionneur-diviseur - Google Patents

Additionneur-diviseur de puissance à large bande pour circuit hyperfréquence et transformateur d'impédance réalisé à partir de cet additionneur-diviseur Download PDF

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Publication number
EP0089083B1
EP0089083B1 EP83200332A EP83200332A EP0089083B1 EP 0089083 B1 EP0089083 B1 EP 0089083B1 EP 83200332 A EP83200332 A EP 83200332A EP 83200332 A EP83200332 A EP 83200332A EP 0089083 B1 EP0089083 B1 EP 0089083B1
Authority
EP
European Patent Office
Prior art keywords
divider
adder
lines
line
combiner
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
Application number
EP83200332A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0089083A1 (fr
Inventor
François de Ronde
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.)
Laboratoires dElectronique Philips SAS
Koninklijke Philips NV
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Laboratoires dElectronique et de Physique Appliquee, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Laboratoires dElectronique et de Physique Appliquee
Publication of EP0089083A1 publication Critical patent/EP0089083A1/fr
Application granted granted Critical
Publication of EP0089083B1 publication Critical patent/EP0089083B1/fr
Expired 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
    • 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

Definitions

  • the present invention relates to a broadband power adder-divider for microwave circuits produced in a flat structure and in particular according to the technique of the printed circuit in the form of a microstrip. It also relates to an impedance transformer produced from this adder-divider.
  • a power divider according to this definition is known from US-A-2 836 798.
  • This document describes a device made up of microstrip lines produced on one side of a dielectric plate, the other side of this dielectric plate being covered by a ground plane.
  • Figure 3 of this document shows a symmetrical power divider in which two conductive lines diverge from a main line. In the device of FIG. 3 the ends of these divergent conducting lines reach a direction which is perpendicular to the direction of the main line from which these secondary lines originate.
  • This document provides curves (FIGS. 1a of the document) which make it possible to evaluate the insertion losses as a function of the radius of curvature of the conducting lines coming from the main line.
  • This document also provides a relation making it possible to evaluate the radius of curvature of these lines associated with the minimum losses, as a function of the width w of the lines and of the angle ⁇ between the main line and the direction of the secondary lines.
  • the object of the invention is to propose a microwave power adder-divider in which the problem of the impedance matching is satisfactorily resolved while retaining a reduced bulk and obtaining a frequency band of several octaves.
  • the invention relates to an adder-divider comprising a first conductive transmission line intended to be traversed by the entire microwave current, second and third conductive transmission lines dividing this microwave current and a so-called transition conductive zone located between this first and the second and third lines, this zone being delimited by two contours in an arc of a circle, tangentially connected to the first line on the one hand and to the second and third lines on the other hand, characterized in that the zone of transition is crossed transversely to the directions of propagation of the current by parallel slits whose ends are located at a distance from said contours in an arc of a circle less than the width w of the second and third transmission lines.
  • the current lines are constrained by stay inside a limited width of the transmission line, which avoids sudden variations in impedance in the transition zone, which generate mismatching.
  • the power adder-divider shown in FIG. 1 is designed to equip a microwave circuit in a flat structure, of the microstrip type, and comprises a first conductive transmission line 10, of width w, crossed by the entire microwave current, second and third conductive transmission lines 20 and 30, here also of width w, which are equally distributed in this case this microwave current, and, between line 10 and the two lines 20 and 30 a conductive transition zone 40, delimited by two contours 41 and 42 in an arc of a circle tangentially connected to the first line 10 and to the second and third lines 20 and 30.
  • This zone 40 is crossed transversely to the mean directions of propagation of the current (indicated in FIG. 1 by the two arrows parallel to the contours 41 and 42, in the case where the device is a power divider) by parallel slots in the form of arc of a circle (they could also be rectilinear), in the case shown eight slots 51 to 58, the ends of which are located at a distance from the contours 41 and 42 less than the width of the transmission lines.
  • This structure forces the current lines to remain inside a conductive strip of width less than that of lines 10 to 30 (the approximate limit of this current flow band is shown in FIG. 1 in dashed lines), this avoids sudden variations in impedance during the crossing of the transition 40 and therefore achieves a gradual distribution of the reflections along the device.
  • a more complete electrical symmetry of the device can be obtained if a longitudinal slot 60 is provided (see FIG. 2) throughout the transition zone 40, this slot 60 crossing the slots 51 to 58 perpendicularly and in the middle and being intended to isolate the two lines 20 and 30 (this insulation is useful especially in the case of an adder operation and can be further improved by covering the slot 60 with an absorption layer).
  • the present invention is not limited to such exemplary embodiments, from which variants can be proposed without departing from the scope of the invention.
  • any residual reflections at low frequencies of the bandwidth of the adder-divider or of the impedance transformer can be completely eliminated by capacitive line segments 71 to 74 arranged transversely to line 10, at a distance from each other equal to a quarter of the wavelength ⁇ m associated with the maximum frequency of the passband, and located at an average distance from the other end of the device (the border between zone 40 and lines 20 and 30) equal to a quarter of the wavelength ⁇ m associated with the minimum frequency of the bandwidth.

Landscapes

  • Waveguides (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Discharge Heating (AREA)
EP83200332A 1982-03-12 1983-03-10 Additionneur-diviseur de puissance à large bande pour circuit hyperfréquence et transformateur d'impédance réalisé à partir de cet additionneur-diviseur Expired EP0089083B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8204251 1982-03-12
FR8204251A FR2523374A1 (fr) 1982-03-12 1982-03-12 Additionneur-diviseur de puissance a large bande pour circuit hyperfrequence et transformateur d'impedance realise a partir de cet additionneur-diviseur

Publications (2)

Publication Number Publication Date
EP0089083A1 EP0089083A1 (fr) 1983-09-21
EP0089083B1 true EP0089083B1 (fr) 1987-11-25

Family

ID=9271957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200332A Expired EP0089083B1 (fr) 1982-03-12 1983-03-10 Additionneur-diviseur de puissance à large bande pour circuit hyperfréquence et transformateur d'impédance réalisé à partir de cet additionneur-diviseur

Country Status (6)

Country Link
US (1) US4490695A (enrdf_load_stackoverflow)
EP (1) EP0089083B1 (enrdf_load_stackoverflow)
JP (1) JPS58168303A (enrdf_load_stackoverflow)
CA (1) CA1194158A (enrdf_load_stackoverflow)
DE (1) DE3374741D1 (enrdf_load_stackoverflow)
FR (1) FR2523374A1 (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1183558B (it) * 1985-04-02 1987-10-22 Gte Telecom Spa Accoppiatore di potenza in film sottile
US4835496A (en) * 1986-05-28 1989-05-30 Hughes Aircraft Company Power divider/combiner circuit
JPH01295502A (ja) * 1988-05-23 1989-11-29 Mitsubishi Electric Corp 電力分配器
US4831345A (en) * 1988-06-17 1989-05-16 The United States Of America As Represented By The Secretary Of The Navy Stripline power divider
JP2708849B2 (ja) * 1989-02-17 1998-02-04 三菱電機株式会社 電力分配器
US5075647A (en) * 1990-05-16 1991-12-24 Universities Research Association, Inc. Planar slot coupled microwave hybrid
JP3771221B2 (ja) * 2003-01-31 2006-04-26 日本無線株式会社 十字型ｔ分岐回路
US8368485B2 (en) * 2008-07-01 2013-02-05 Dockon Ag Radio frequency combiners/splitters
GB0811990D0 (en) 2008-07-01 2008-08-06 Dockon Ltd Improvements in and relating to radio frequency combiners/splitters
CN101656343B (zh) * 2009-09-11 2012-12-12 电子科技大学 一种功分器
CN102800912B (zh) * 2011-06-29 2014-04-16 深圳光启高等理工研究院 一种波导功分器
CN103022619B (zh) * 2013-01-11 2015-04-22 中国人民解放军空军工程大学 基于微波倒相器的一分三功率分配器及其功率分配方法
US9112458B2 (en) 2013-10-01 2015-08-18 Telefonaktiebolaget L M Ericsson (Publ) Wideband Doherty amplifier
US9537198B2 (en) 2013-10-01 2017-01-03 Telefonaktiebolaget L M Ericsson (Publ) Wideband impedance transformer
EP3155720B1 (en) 2014-06-16 2020-03-18 Telefonaktiebolaget LM Ericsson (publ) Wideband impedance transformer
WO2017024237A1 (en) 2015-08-06 2017-02-09 The Johns Hopkins University Composition and method for treatment of metabolic disorders
TWI860751B (zh) * 2023-06-15 2024-11-01 啟碁科技股份有限公司 傳輸線結構和無線通信系統

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE540814A (enrdf_load_stackoverflow) * 1953-02-13
US3414880A (en) * 1965-07-02 1968-12-03 Ibm Source error correction for relatively moving signals
GB1330408A (en) * 1971-04-26 1973-09-19 Mullard Ltd Microwave power-divider
US3815055A (en) * 1973-04-20 1974-06-04 Raytheon Co Microwave power divider
US3886498A (en) * 1974-07-22 1975-05-27 Us Navy Wideband, matched three port power divider
FR2460048A1 (fr) * 1979-06-22 1981-01-16 Labo Electronique Physique Transformateur d'impedance a large bande pour ligne hyperfrequence a constantes reparties, additionneur-diviseur de puissance comprenant ce transformateur d'impedance et circuit incorporant cet additionneur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROCEEDINGS 10TH EUROPEAN MICROWAVE CONFERENCE, septembre 1980, pages 310-314, Sevenoaks, GB. L. NYSTRÖM: A new broadband high directivity 3dB-hybrid and power divider" *

Also Published As

Publication number Publication date
FR2523374A1 (fr) 1983-09-16
EP0089083A1 (fr) 1983-09-21
US4490695A (en) 1984-12-25
JPH0324802B2 (enrdf_load_stackoverflow) 1991-04-04
JPS58168303A (ja) 1983-10-04
CA1194158A (en) 1985-09-24
DE3374741D1 (en) 1988-01-07
FR2523374B1 (enrdf_load_stackoverflow) 1984-04-20

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