EP0022990B1 - Symétriseur microondes du type microstrip - Google Patents

Symétriseur microondes du type microstrip Download PDF

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Publication number
EP0022990B1
EP0022990B1 EP80103986A EP80103986A EP0022990B1 EP 0022990 B1 EP0022990 B1 EP 0022990B1 EP 80103986 A EP80103986 A EP 80103986A EP 80103986 A EP80103986 A EP 80103986A EP 0022990 B1 EP0022990 B1 EP 0022990B1
Authority
EP
European Patent Office
Prior art keywords
conductor
conductor paths
earth
path
plate
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
EP80103986A
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German (de)
English (en)
Other versions
EP0022990A1 (fr
Inventor
Klaus Otremba
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80103986T priority Critical patent/ATE7550T1/de
Publication of EP0022990A1 publication Critical patent/EP0022990A1/fr
Application granted granted Critical
Publication of EP0022990B1 publication Critical patent/EP0022990B1/fr
Expired legal-status Critical Current

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    • 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 invention relates to a symmetry transformer in microstrip technology for the microwave range, with a plate made of dielectric material that can be inserted into a metal housing, on one surface of which a first metallic conductor path and on both sides of this conductor path and in parallel position with further metallic conductor paths and on the opposite surface of the Plate one behind the other two, forming a ground line, approximately d / 4 long metallic conductor tracks of greater width, which are connected in their outer end region to the metallic housing, one end of the first conductor track together with the corresponding ground conductor providing the asymmetrical input ( Gate I) of the transformer.
  • Such balancing transformers are used, for example, in the construction of modulators, namely in the so-called double push-pull modulator, also called ring modulator.
  • Such a modulator consists of two balun and a diode quartet.
  • This modulator principle is known from telephony technology, i.e. the low frequency range.
  • the implementation of these transformers or an equivalent circuit for the microwave range is difficult, since the line types used in microwave circuits are generally unbalanced and symmetrical transformers with windings cannot be used in the microwave range.
  • a balun of the type described in the opening paragraph is essentially known from DE-A-1 441 077.
  • the earth-symmetrical and earth-unbalanced line are connected directly or indirectly by connecting a parallel resonance system in parallel.
  • the parallel resonance system is formed by the counterweight of the earth-unbalanced line in cooperation with a metal plate arranged at a distance from it.
  • a 3 dB directional coupler with a 180 ° phase shift between two gates is known from US Pat. No. 3,026,490. All gates are formed by earth-unbalanced lines, these lines predominantly each individually representing a kind of triplate line against the ground surfaces and do not form a line system with one another.
  • the invention has for its object to provide a balun for the microwave range, with which modulators and similar electrical assemblies with good properties in terms of noise and decoupling can be easily produced.
  • this object is achieved according to the invention in a first embodiment with a balun in microstrip technology in such a way that the further conductor tracks are approximately A / 4 long and two of them are arranged one behind the other and are electrically conductively connected to the ground conductor tracks by means of plated-through holes and that to the on the one side of the first conductor track, further conductor tracks are arranged in their end region lying approximately in the middle of the plate, one conductor track running perpendicular to these in the plane of the conductor tracks, which together form an earth-symmetrical line as the output (gate 11) of the transformer.
  • the symmetrical lines are routed next to each other in a plane above or below the dielectric plate.
  • Another embodiment, in which the symmetrical lines can be routed in two planes, is constructed in accordance with the invention in microstrip technology in such a way that the further conductor tracks are approximately ⁇ / 4 long and two of them are arranged one behind the other and are electrically conductive with vias with the ground conductor tracks are connected and that to one of the conductor tracks arranged on one side of the first conductor track and to the ground line arranged opposite to the second of these conductor tracks, each in its end region lying approximately in the middle of the plate, in the plane of the conductor tracks or the ground conductor tracks perpendicular to these Conductive traces, opposite one another on the surfaces of the plate, are connected, which together form an earth-symmetrical line as an output (gate II) of the transformer.
  • the first metallic conductor track is connected in an electrically conductive manner to at least one of the approximately A / 4 long conductor tracks arranged on one side of the first conductor track, or is insulated, depending on whether it is a balancing device simple type or a compensated symmetry device.
  • an RF modulator or a similar electrical assembly can be easily constructed.
  • Fig. 1 shows a perspective view of a balun, in which the symmetrical lines are carried side by side in one plane.
  • the plate 1 made of dielectric material carries an insulated conductor track 2 on the surface in the figure above and on both sides of this conductor track 2 in a parallel position to this two two ⁇ / 4 long conductor tracks 3, 4 or 3 a, 4 a arranged one behind the other.
  • Two approximately ⁇ / 4 long conductor tracks 5, 6 (dashed line) of greater width are applied to the area located at the bottom in the figure.
  • These conductor tracks 5, 6 are arranged opposite the insulated conductor track 2 and the approximately A / 4 long conductor tracks 3, 3a on the one hand and 4,4a on the other hand, and are electrically conductively connected to these ⁇ / 4 long conductor tracks Conductors 3, 3a connected to the ground line 5 and the conductor tracks 4, 4a to the ground line 6 on the underside of the plate 1. This connection is made by means of plated-through holes 11. On the two approximately ⁇ / 4 long conductor paths 3, 4 located on one side of the insulated conductor path 2, a conductor path 9, 9a running perpendicular to this is connected, which is in a parallel position on the upper side of the Plate run.
  • the 1/4 long conductor tracks 5, 6 forming the ground line are connected at their ends 7, 7a to the metallic housing.
  • the earth-unbalanced signal is fed to the balancing device at gate I, the ribbon cable 9, 9a carries the earth-symmetrical signal (gate II).
  • the ⁇ / 4 long conductor tracks 3, 3a, 5 and 4, 4a, 6 together with the metal housing 8 form strip lines with the wave resistances Z 1 and Z 2 .
  • the conductor track 2 forms a microstrip line with the wide conductor track 5 or 6 (ground line) and a coplanar line with the conductor tracks 3, 3a or 4, 4a.
  • This form of line makes it possible to concentrate the electromagnetic field of the earth-unbalanced signal as completely as possible in the dielectric plate and at the same time to create connection points for the symmetrical line 9, 9a. In this way, the symmetrical lines can be routed next to one another in one level above or below the plate 1 (see FIG. 1) or in two levels one above the other (see FIG. 2). This results in several options for connecting the earth-symmetrical consumer.
  • Fig. 2 shows a balun, which corresponds in its basic structure to that shown in Fig. 1, the only difference is that the symmetrical lines are not next to each other on a plate side, so in one plane, but are guided in two planes one above the other.
  • This structure is implemented in such a way that a conductor track 10 running perpendicular to it is connected only to one of the approximately 4/4 long conductor tracks 3, 4 located on one side of the insulated conductor track 2.
  • the second conductor track 10a of the symmetrical line is located on the underside of the dielectric plate, opposite the first conductor track 10.
  • the second conductor track 10a is connected perpendicularly to the approximately 1/4-long conductor track 6 which forms a ground line and which is not the first Conductor 10 connected, about 1/4 long conductor track 4 is opposite.
  • FIGS. 1 and 2 with the insulated conductor track 2 on the upper side of the dielectric plate 1 represent a compensated balancing device which makes the symmetry over a larger frequency range possible with little reflection.
  • FIG. 3 shows a perspective illustration of an RF modulator which is constructed from two balun transformers according to FIG. 2.
  • a second balun of the same construction is added to the balun according to FIG. 2, approximately in the section plane.
  • the dielectric plate 1 In the end region of the symmetrical ribbon lines 10, 10a, the dielectric plate 1 has a cutout 12 in which the nonlinear elements, a diode quartet, of the modulator are arranged.
  • a connection is made from the symmetrical ribbon cable to a connection 13 in the housing 8, which forms the output to an IF preamplifier.
  • Gates 1 and 1 form the inputs of the unbalanced line for the RF signal and the oscillator signal.
  • RF modulators and similar electrical assemblies can be constructed which have a low noise figure within a relatively large frequency bandwidth and at the same time have a high level of decoupling between the oscillator gate and the signal gate.
  • the circuit is very simple to manufacture. Since the dielectric plate, for example glass-fiber-reinforced Teflon, is only connected to the housing at four points and unevenness in the housing has no influence on the electrical function of the modulator, that is to say only very little on the housing ge accuracy requirements, an inexpensive construction can be used for this.
  • the housing is manufactured, for example, as a hot-pressed part without major post-processing.

Landscapes

  • Amplitude Modulation (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguides (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Claims (5)

1. Transformateur de symétrisation selon la technique microstrip pour le domaine des micro- ondes, compartant une plaque (1) pouvant être insérée dans un boîtier métallique (8) et constituée en un matériau diélectrique, et sur une surface de laquelle se trouve disposée une première voie conductrice métallique (2), tandis que des deux côtés de cette voie conductrice et parallë- lement à cette dernière se trouvent disposées d'autres voies conductrices métalliques (3, 4 et 3a, 4a) et que, sur la surface opposée de la plaque (1) se trouvent disposées l'une derrière l'autre deux voies conductrices métalliques (5, 6) d'une longueur égale à environ λ/4 et d'une largeur plus importante, formant un conducteur de masse et qui sont reliées, dans leur région terminale extérieure, au boîtier métallique (8), une extrémité de la première voie conductrice (2) formant avec la voie conductrice de masse correspondante (5) l'éntrée dissymétrique (porte I) d'u transformateur, caractérisé par le fait que les autres voies conductrices possèdent une Ion- gueur égale à environ λ/4 et que deux d'entré elles (3,4 ou 3a, 4a) sont disposées l'une derrière l'autre et sont reliées d'une manière électriquement conductrice au moyen de contacts traversants (11) aux voies conductrices de masse (5, 6), et qu'aux autres voies conductrices (3, 4) disposées d'un côté de la première voie conductrice (2) se trouvent raccordées, et ce au niveau de la zone terminale desdites voies conductrices situées approximativement au centre de la plaque, des voies conductrices respectives (9, 9a) s'étendant dans le plan desdites autres voies conductrices perpendiculairement à ces dernières et qui forment ensemble une ligne symétrique par rapport à la terre, servant de sortie (porte II) au transformateur (fig. 1).
2. Transformateur de symétrisation selon la technique microstrip pour le domaine des micro- ondes, comportant une plaque (1) pouvant être insérée dans un boîtier métallique (8) et constituée en un matériau diélectrique, et sur une surface de laquelle se trouve disposée une première voie conductrice métallique (2), tandis que des deux côtés de cette voie conductrice et parallèlement à cette derniere se trouvent disposées d'autres voies conductrices métalliques (3, 4, 3a, 4a) et que sur la surface opposée de la plaque (1) se trouvent disposée l'une derrière l'autre deux voies conductrices métalliques (5, 6) d'une lon- gueuregaie à environ λ/4 et d'une largeur plus importante, formant un conducteur de masse et qui sont boîtier métallique (8), une extrémité de la première voie conductrice (2) formant avec la voie conductrice de masse correspondante (5) l'entrée dissymétrique (porte I) du transformateur, caractérisé par le fait que les autres voies conductrices possèdent une longueur égale à environ Â/4 et que deux d'entre elles (3, 4 ou 3a, 4a) sont disposées l'une derrière l'autre et sont reliées d'une façon électriquement conductrice au moyen de contacts traversants (11) aux voies conductrices de masse (5, 6), et qu'à l'une (3) des voies conductrices (3, 4) disposées d'un côté de Ia première voie conductrice (2) et au conducteur de masse (3) disposé à l'opposé de la seconde (4) de ces voies conductrices sont raccordées, respectivement au niveau de la zone terminale de ces voies conductrices située approximativement au centre de la plaque, des voies conductrices (10, 10a) s'étendant dans le plan desdites voies conductrices ou des voies conductrices de masse, perpendiculairement à ces voies conductrices (3, 6) et situées dans des positions opposées sur les surfaces de la plaque (1) et qui forment ensemble une ligne symétrique par rapport à la terre et servant de sortie (porte II) au transformateur (fig. 2).
3. Transformateur de symétrisation selon la revendication 1 ou 2, caractérisé par le fait que la première voie conductrice métallique (2) est ré- liée d'une manière électriquement conductrice à au moins l'une des voies conductrices (3a ou 4a) d'une longueur égale à environ λ/4 et situées d'un côté de la première voie conductrice (2).
4. Transformateur de symétrisation suivant la revendication 1 ou 2, caractérisé par le fait que la première voie conductrice métallique (2) est disposée en étant isolée.
5. Transformateur de symétrisation suivant l'une des revendications précédentes, caractérisé par l'interconnexion, par couples, avec des diodes associées, pour réaliser un modulateur à radiofréquence ou un module groupe électrique de construction analogue.
EP80103986A 1979-07-20 1980-07-10 Symétriseur microondes du type microstrip Expired EP0022990B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103986T ATE7550T1 (de) 1979-07-20 1980-07-10 Symmetrieruebertrager in mikrostriptechnik fuer den mikrowellenbereich.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2929522 1979-07-20
DE19792929522 DE2929522A1 (de) 1979-07-20 1979-07-20 Symmetrieruebertrager fuer den mikrowellenbereich

Publications (2)

Publication Number Publication Date
EP0022990A1 EP0022990A1 (fr) 1981-01-28
EP0022990B1 true EP0022990B1 (fr) 1984-05-16

Family

ID=6076332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103986A Expired EP0022990B1 (fr) 1979-07-20 1980-07-10 Symétriseur microondes du type microstrip

Country Status (6)

Country Link
US (1) US4361818A (fr)
EP (1) EP0022990B1 (fr)
JP (1) JPS608644B2 (fr)
AT (1) ATE7550T1 (fr)
AU (1) AU520953B2 (fr)
DE (2) DE2929522A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359782A (en) * 1981-05-19 1982-11-16 Rockwell International Corporation Microwave mixer with linking juxtaposed balun port
FR2528239A1 (fr) * 1982-06-08 1983-12-09 Thomson Csf Melangeur d'ondes electromagnetiques hyperfrequences
PL141094B1 (en) * 1983-12-09 1987-06-30 Polska Akad Nauk Centrum Microwave balun transformer,especially for mixers and modulators
US5819169A (en) * 1996-05-10 1998-10-06 Northrop Grumman Corporation High performance mixer structures for monolithic microwave integrated circuits
FI103614B (fi) * 1997-03-20 1999-07-30 Nokia Mobile Phones Ltd Vaiheistus- ja balansointielin
EP2048737A4 (fr) * 2006-08-02 2009-11-25 Murata Manufacturing Co Dispositif de puce
CN103441318B (zh) * 2013-08-01 2016-09-21 南京理工大学 基于微带线到共面带状线超宽带渐变地巴伦器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812501A (en) * 1954-03-04 1957-11-05 Sanders Associates Inc Transmission line
US2926317A (en) * 1954-03-11 1960-02-23 Sanders Associates Inc Transmission line
US3093805A (en) * 1957-07-26 1963-06-11 Osifchin Nicholas Coaxial transmission line
US3026490A (en) * 1959-12-28 1962-03-20 Bell Telephone Labor Inc Microwave coupling arrangements
DE1441077A1 (de) * 1962-07-18 1969-02-06 Rohde & Schwarz UEbertrager fuer hochfrequente elektromagnetische Wellen zur gegenseitigen Anpassungvon erdsymmetrischen und erdunsymmetrischen Leitungen
US3652941A (en) * 1970-02-24 1972-03-28 Rhg Electronics Lab Inc Double balanced microwave mixer using balanced microstrip baluns
US3772599A (en) * 1972-04-17 1973-11-13 Rca Corp Microwave double balanced mixer
US3818385A (en) * 1972-09-21 1974-06-18 Aertech Hybrid junction and mixer or modulator
US3848198A (en) * 1972-12-14 1974-11-12 Rca Corp Microwave transmission line and devices using multiple coplanar conductors
US4118670A (en) * 1975-05-08 1978-10-03 Westinghouse Electric Corp. Image phased and idler frequency controlled mixer formed on an integrated circuit dielectric substrate
US4125810A (en) * 1977-04-08 1978-11-14 Vari-L Company, Inc. Broadband high frequency baluns and mixer

Also Published As

Publication number Publication date
US4361818A (en) 1982-11-30
DE3067833D1 (en) 1984-06-20
ATE7550T1 (de) 1984-06-15
AU520953B2 (en) 1982-03-11
DE2929522A1 (de) 1981-01-29
AU6062180A (en) 1981-02-05
JPS5620303A (en) 1981-02-25
JPS608644B2 (ja) 1985-03-05
EP0022990A1 (fr) 1981-01-28

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