EP0834954A1 - Transition between a ridge wave guide and a planar circuit - Google Patents
Transition between a ridge wave guide and a planar circuit Download PDFInfo
- Publication number
- EP0834954A1 EP0834954A1 EP97401936A EP97401936A EP0834954A1 EP 0834954 A1 EP0834954 A1 EP 0834954A1 EP 97401936 A EP97401936 A EP 97401936A EP 97401936 A EP97401936 A EP 97401936A EP 0834954 A1 EP0834954 A1 EP 0834954A1
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- European Patent Office
- Prior art keywords
- transition
- circuit
- planar
- transition according
- waveguide
- 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.)
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- 230000007704 transition Effects 0.000 title claims description 54
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 4
- 230000000750 progressive effect Effects 0.000 description 3
- 241000397921 Turbellaria Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001080024 Telles Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01P5/107—Hollow-waveguide/strip-line transitions
Definitions
- the field of the invention is that of transition elements microwave and more specifically concerns a transition between a waveguide crested and a planar circuit.
- a transition is a passive microwave element allowing to pass from one means of propagation to another. It is thus possible to transmit a signal microwave through a system comprising waveguides of shapes different, for example rectangular and circular, micro-ribbon lines, triplate lines and / or coaxial cables.
- a crest waveguide is a rectangular waveguide or circular including a metallic ridge.
- the planar circuit can be consisting of a micro-ribbon circuit, a coplanar circuit with or without a plane of ground or a suspended micro-ribbon circuit.
- Figure 1 is a sectional view of a transition between a waveguide and a microstrip line such as described in the book "Microwave transition design” by J.S. and S.M. Izadian, Artech House 1988, page 54, figure 4.1.
- a waveguide 10 comprises a cover 11 on which is fixed a peak forming a progressive impedance transformer 12. Ridge 12 is in the center of the waveguide 10 and its free end 13 is brought into contact, by the fitting of the cover 11, with a conductor 14 mounted on a substrate 15, the underside constitutes a ground plane. The conductor 14, the substrate 15 and the ground plane constitute a micro-ribbon line. This ensures continuity between the ridge 12 and the line 14.
- Figure 2 is a sectional view of such a transition.
- the conductive link is referenced 20 and shown in solid lines.
- the link 20 connects the end of the ridge 12 to the conductor 14 of the planar circuit, the contact points being referenced 21 and 22.
- the conductive link is referenced 23 and shown in broken lines.
- the link 23 has contact points referenced 24 and 25.
- connection 20 and 23 cannot be implemented industrially (for example example using a thermo-compression machine) because the contact points 20 and 22 on the one hand and 24 and 25 on the other hand are not accessible according to directions identical.
- a thermo-compression intended to achieve the point of contact 20 must be able to access according to the direction 26 whereas for the realization of the point of contact 22, it must be able access in direction 27. This would require providing two openings allowing the access and a reversal of the transition between the two thermo-compressions.
- the directions of access of the thermo-compression machine are 27 and 28 and the same problem arises.
- the present invention aims in particular to overcome these disadvantages.
- one of the objectives of the invention is to provide a transition between a crest waveguide and a planar circuit ensuring excellent impedance matching over a wide frequency band and while being easily industrializable.
- a transition between a peak waveguide and a planar circuit on which one conductor is provided comprising at least one connection conductor connecting the end of the ridge to the conductor between two points of contact, the contact points being opposite the same access provided for the setting in place of the conductive link.
- the contact points can then be made using a machine since only one direction of access is necessary for the establishment of the link conductive.
- Figure 3 is a sectional view of an embodiment of a transition according to the present invention.
- planar circuit is referenced 30, the crest (here in steps to perform an impedance transformation) is referenced 31, and the conductive link, connecting the end of the ridge 31 to the conductor provided on the planar circuit 30, is referenced 32.
- the contact points 33 and 34 of the link 32 on the ridge 31 and the planar circuit 30 are opposite the same access provided for setting up place of the conductive link.
- the contact points 33 and 34 can be produced by a thermo-compression machine before fitting the cover referenced 36.
- Figure 3 shows three guide sections.
- section A a recess is provided under the upper part of the end of the ridge 31 in order to allow a transformation of the field lines into a cable type propagation mode coaxial.
- Section B corresponds to a withdrawal of the end of the ridge 31 by relative to the wall on which the planar circuit 30 rests. function to allow looping of the H field.
- section C can advantageously be optimized to ensure compensation capacitive of the transition.
- the planar circuit 30 is preferably housed in a guide section 37 under the cutoff, so as to avoid the propagation of the modes guided by orders superiors.
- the width of the guide section 37 in which is placed the planar circuit 30 must be sufficiently small.
- the planar circuit 30 is preferably housed in a recess ensuring its good positioning.
- This hermeticity window 38 made of quartz, alumina or cordierite, has the function of protecting the planar circuit 30 from certain gases, in particular from hydrogen, and moisture. The transition is in this case confined in a neutral atmosphere and integration is therefore sealed.
- the end of the ridge 31 is advantageously provided with two pins 40, 41 ensuring a capacitive compensation of the conductive link 32, such bond being of the selfic type.
- the planar circuit 30 can also have two pins 42, 43 performing the same function.
- Connection 32 can also be carried out using several conductors in parallel to reduce its impedance.
- the conductor of the planar circuit 30 is referenced 44.
- the invention applies to any planar circuit consisting by a support of a conductor, whether it is in micro-ribbon technology (plan of mass under the substrate), in coplanar technology (share ground planes and the central conductor), in coplanar technology with ground plane or in suspended micro-ribbon technology.
- the invention applies not only to ridges with variations dimensions for performing an impedance matching function, but also at ridges whose upper end is constantly at the same distance from the bottom on which this crest rests.
- the invention applies in particular to guides WR22 and WR19, in especially in the 40-60 GHz band. It also applies to guides circular.
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- Waveguides (AREA)
- Waveguide Connection Structure (AREA)
Abstract
Description
Le domaine de l'invention est celui des éléments de transition hyperfréquences et concerne plus précisément une transition entre un guide d'ondes à crête et un circuit planaire.The field of the invention is that of transition elements microwave and more specifically concerns a transition between a waveguide crested and a planar circuit.
Une transition est un élément hyperfréquence passif permettant de passer d'un moyen de propagation à un autre. Il est ainsi possible de transmettre un signal hyperfréquence à travers un système comportant des guides d'ondes de formes différentes, par exemple rectangulaires et circulaires, des lignes micro-ruban, des lignes triplaques et/ou des câbles coaxiaux.A transition is a passive microwave element allowing to pass from one means of propagation to another. It is thus possible to transmit a signal microwave through a system comprising waveguides of shapes different, for example rectangular and circular, micro-ribbon lines, triplate lines and / or coaxial cables.
Il est fréquent de devoir transmettre un signal entre un guide d'ondes et un circuit planaire. Un guide d'ondes à crête est un guide d'ondes rectangulaire ou circulaire comprenant une crête métallique. Le circuit planaire peut quant à lui être constitué par un circuit micro-ruban, un circuit coplanaire avec ou sans plan de masse ou un circuit micro-ruban suspendu.It is common to have to transmit a signal between a waveguide and a planar circuit. A crest waveguide is a rectangular waveguide or circular including a metallic ridge. The planar circuit can be consisting of a micro-ribbon circuit, a coplanar circuit with or without a plane of ground or a suspended micro-ribbon circuit.
De manière connue, la transition peut être de type à constantes localisées ou à constantes réparties :
- une transition à constantes localisées entre un guide d'ondes et un circuit planaire a une dimension inférieure à la longueur d'onde guidée. Elle est habituellement constituée par une sonde pénétrant dans le guide d'ondes, perpendiculairement à la direction d'extension de ce guide d'ondes, et raccordée au circuit planaire. La sonde est constituée par l'âme du câble coaxial ou par une ligne métallisée gravée sur un substrat dont la face opposée est localement démétallisée. L'inconvénient de ce type de transition est qu'elle nécessite un changement de direction de 90° du signal hyperfréquence et l'encombrement dû à la transition est alors important. Ceci est valable pour les transitions plan E et plan H. De plus, de telles transitions sont difficiles à mettre en oeuvre et ne présentent pas une large bande d'adaptation.
- une transition à constantes réparties a une dimension supérieure ou égale à la longueur d'onde guidée. Elle est habituellement constituée par un transformateur d'impédance en escalier ou progressive. L'extrémité du transformateur d'impédance située du côté de la transition présente une section en crête (voir Fig.5). Ce type de transition présente une largeur de bande plus importante. On peut par exemple se référer à la demande de brevet français n°2.552.586 appliquée à une transition guide d'ondes - ligne coaxiale ou ligne micro-ruban.
- a transition with localized constants between a waveguide and a planar circuit has a dimension less than the guided wavelength. It is usually constituted by a probe penetrating the waveguide, perpendicular to the direction of extension of this waveguide, and connected to the planar circuit. The probe is formed by the core of the coaxial cable or by a metallized line etched on a substrate whose opposite face is locally demetallized. The disadvantage of this type of transition is that it requires a change of direction of 90 ° of the microwave signal and the bulk due to the transition is then significant. This is valid for the plan E and plane H transitions. In addition, such transitions are difficult to implement and do not have a wide adaptation band.
- a transition with distributed constants has a dimension greater than or equal to the guided wavelength. It is usually constituted by a staircase or progressive impedance transformer. The end of the impedance transformer located on the side of the transition has a peak section (see Fig. 5). This type of transition has a larger bandwidth. One can for example refer to the French patent application n ° 2.552.586 applied to a waveguide transition - coaxial line or micro-ribbon line.
Le principe de cette solution est décrit en référence à la figure 1 qui est une vue en coupe d'une transition entre un guide d'ondes et une ligne micro-ruban tel que décrite dans l'ouvrage "Microwave transition design" de J.S. et S.M. Izadian, Artech House 1988, page 54, figure 4.1.The principle of this solution is described with reference to Figure 1 which is a sectional view of a transition between a waveguide and a microstrip line such as described in the book "Microwave transition design" by J.S. and S.M. Izadian, Artech House 1988, page 54, figure 4.1.
Sur la figure 1, un guide d'ondes 10 comporte un capot 11 sur lequel est
fixée une crête formant un transformateur d'impédance 12 progressif. La crête 12 est
au centre du guide d'ondes 10 et son extrémité libre 13 est mise en contact, par la
mise en place du capot 11, avec un conducteur 14 monté sur un substrat 15 dont la
face inférieure constitue un plan de masse. Le conducteur 14, le substrat 15 et le
plan de masse constituent une ligne micro-ruban. On assure ainsi une continuité
électrique entre la crête 12 et la ligne 14.In FIG. 1, a
L'inconvénient de cette solution est qu'elle nécessite de respecter de sévères tolérances de fabrication pour que le contact électrique soit bon. De plus, des problèmes de contact se posent en présence de dilatations thermiques.The disadvantage of this solution is that it requires respecting strict manufacturing tolerances for good electrical contact. Moreover, contact problems arise in the presence of thermal expansion.
Une solution qui remédie à cet inconvénient consiste à prévoir une liaison conductrice souple entre l'extrémité de la crête et le conducteur prévu sur le circuit planaire.One solution which overcomes this drawback is to provide a connection flexible conductor between the end of the ridge and the conductor provided on the circuit planar.
La figure 2 est une vue en coupe d'une telle transition.Figure 2 is a sectional view of such a transition.
Dans un premier mode de réalisation, la liaison conductrice est référencée
20 et représentée en traits pleins. La liaison 20 relie l'extrémité de la crête 12 au
conducteur 14 du circuit planaire, les points de contact étant référencés 21 et 22.
Dans un second mode de réalisation, la liaison conductrice est référencée 23 et
représentée en traits discontinus. La liaison 23 a des points de contact référencés 24
et 25.In a first embodiment, the conductive link is referenced
20 and shown in solid lines. The
L'inconvénient présenté par ces deux modes de réalisation est que les
liaisons 20 et 23 ne peuvent pas être mises en place de manière industrielle (par
exemple à l'aide d'une machine à thermo-compression) car les points de contact 20
et 22 d'une part et 24 et 25 d'autre part ne sont pas accessibles selon des sens
identiques. A titre d'exemple, en ce qui concerne la liaison 20, une machine à
thermo-compression destinée à réaliser le point de contact 20 doit pouvoir accéder
selon le sens 26 alors que pour la réalisation du point de contact 22, elle doit pouvoir
accéder selon le sens 27. Ceci nécessiterait de prévoir deux ouvertures permettant
l'accès et un retournement de la transition entre les deux thermo-compressions. De
même, en ce qui concerne la liaison 23, les sens d'accès de la machine à thermo-compression
sont 27 et 28 et le même problème se pose. The disadvantage presented by these two embodiments is that the
La présente invention a notamment pour objectif de pallier ces inconvénients.The present invention aims in particular to overcome these disadvantages.
Plus précisément, un des objectifs de l'invention est de fournir une transition entre un guide d'ondes à crête et un circuit planaire assurant une excellente adaptation d'impédance sur une large bande de fréquences et tout en étant facilement industrialisable.More specifically, one of the objectives of the invention is to provide a transition between a crest waveguide and a planar circuit ensuring excellent impedance matching over a wide frequency band and while being easily industrializable.
Cet objectif, ainsi que d'autres qui apparaítront par la suite, est atteint grâce à une transition entre un guide d'ondes à crête et un circuit planaire sur lequel est prévu un conducteur, la transition comportant au moins une liaison conductrice reliant l'extrémité de la crête au conducteur entre deux points de contact, les points de contact étant en regard d'un même accès prévu pour la mise en place de la liaison conductrice.This objective, as well as others which will appear later, is achieved thanks to a transition between a peak waveguide and a planar circuit on which one conductor is provided, the transition comprising at least one connection conductor connecting the end of the ridge to the conductor between two points of contact, the contact points being opposite the same access provided for the setting in place of the conductive link.
Les points de contact peuvent alors être réalisés à l'aide d'une machine puisqu'un seul sens d'accès est nécessaire pour la mise en place de la liaison conductrice.The contact points can then be made using a machine since only one direction of access is necessary for the establishment of the link conductive.
D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description suivante d'un mode de réalisation préférentiel, donné à titre illustratif et non limitatif, et des dessins annexés dans lesquels :
- la figure 1 représente une vue en coupe d'une transition entre un guide d'ondes et une ligne micro-ruban de type connu ;
- la figure 2 est une vue en coupe d'une transition permettant de remédier aux problèmes de dilations mécaniques posés par la transition de la figure 1 ;
- la figure 3 est une vue en coupe d'un mode de réalisation d'une transition selon la présente invention ;
- la figure 4 est une vue en coupe selon IV-IV de la figure 3 ;
- la figure 5 est une vue en coupe selon V-V de la figure 4.
- Figure 1 shows a sectional view of a transition between a waveguide and a microstrip line of known type;
- Figure 2 is a sectional view of a transition to overcome the problems of mechanical expansion posed by the transition of Figure 1;
- Figure 3 is a sectional view of an embodiment of a transition according to the present invention;
- Figure 4 is a sectional view along IV-IV of Figure 3;
- FIG. 5 is a sectional view along VV of FIG. 4.
Les figures 1 et 2 ont été décrites précédemment en référence à l'état de la technique.Figures 1 and 2 have been described above with reference to the state of the technical.
La figure 3 est une vue en coupe d'un mode de réalisation d'une transition selon la présente invention.Figure 3 is a sectional view of an embodiment of a transition according to the present invention.
Dans ce mode de réalisation, le circuit planaire est référencé 30, la crête
(ici en escalier pour réaliser une transformation d'impédance) est référencée 31, et
la liaison conductrice, reliant l'extrémité de la crête 31 au conducteur prévu sur le
circuit planaire 30, est référencée 32. In this embodiment, the planar circuit is referenced 30, the crest
(here in steps to perform an impedance transformation) is referenced 31, and
the conductive link, connecting the end of the
Selon l'invention, les points de contact 33 et 34 de la liaison 32 sur la crête
31 et le circuit planaire 30 sont en regard d'un même accès prévu pour la mise en
place de la liaison conductrice. Ainsi, il est possible de mettre en place la liaison 32
à l'aide d'une machine accédant aux extrémités de la liaison 32 selon un seul et
même sens d'accès, référencé 35. La transition devient de ce fait facilement
industrialisable, les points de contact 33 et 34 pouvant être réalisés par une
machine à thermo-compression avant la mise en place du capot référencé 36.According to the invention, the
La figure 3 montre trois sections de guide. Dans la section A, un évidement
est prévu sous la partie supérieure de l'extrémité de la crête 31 afin de permettre
une transformation des lignes de champ en un mode de propagation de type câble
coaxial. La section B correspond à un retrait de l'extrémité de la crête 31 par
rapport à la paroi sur laquelle repose le circuit planaire 30. Ce retrait a pour
fonction de permettre un rebouclage du champ H. Les dimensions de la section C
peuvent avantageusement être optimisées afin d'assurer une compensation
capacitive de la transition.Figure 3 shows three guide sections. In section A, a recess
is provided under the upper part of the end of the
Le circuit planaire 30 est préférentiellement logé dans une section de guide
37 sous la coupure, de manière à éviter la propagation des modes guidés d'ordres
supérieurs. Pour cela, la largeur de la section de guide 37 dans laquelle est placé
le circuit planaire 30 doit être suffisamment petite.The planar circuit 30 is preferably housed in a
Le circuit planaire 30 est de préférence logé dans un évidement assurant son bon positionnement.The planar circuit 30 is preferably housed in a recess ensuring its good positioning.
Une fenêtre d'herméticité 38 est avantageusement placée dans le guide
d'ondes 10. Cette fenêtre d'herméticité 38, en quartz, en alumine ou en cordiérite,
a pour fonction de protéger le circuit planaire 30 de certains gaz, en particulier de
l'hydrogène, et de l'humidité. La transition est dans ce cas confinée dans une
atmosphère neutre et l'intégration est de ce fait hermétique.An
Comme il est visible sur la figure 4 qui est une vue en coupe selon IV-IV de
la figure 3, l'extrémité de la crête 31 est avantageusement munie de deux tétons
40, 41 assurant une compensation capacitive de la liaison conductrice 32, une telle
liaison étant de type selfique. De même, le circuit planaire 30 peut également
comporter deux tétons 42, 43 assurant la même fonction.As can be seen in Figure 4 which is a sectional view along IV-IV of
Figure 3, the end of the
La coupe selon III-III de la figure 4 correspond à celle de la figure 3.The section along III-III of FIG. 4 corresponds to that of FIG. 3.
La liaison 32 peut également être réalisée à l'aide de plusieurs conducteurs
en parallèle afin de diminuer son impédance. Le conducteur du circuit planaire 30
est référencé 44.
De manière générale, l'invention s'applique à tout circuit planaire constitué par un support d'un conducteur, qu'il soit en technologie micro-ruban (plan de masse sous le substrat), en technologie coplanaire (plans de masse de part et d'autre du conducteur central), en technologie coplanaire avec plan de masse ou en technologie micro-ruban suspendu.In general, the invention applies to any planar circuit consisting by a support of a conductor, whether it is in micro-ribbon technology (plan of mass under the substrate), in coplanar technology (share ground planes and the central conductor), in coplanar technology with ground plane or in suspended micro-ribbon technology.
L'invention s'applique non seulement aux crêtes présentant des variations de dimensions pour la réalisation d'une fonction d'adaptation d'impédance, mais également aux crêtes dont l'extrémité supérieure est constamment à la même distance du fond sur lequel repose cette crête.The invention applies not only to ridges with variations dimensions for performing an impedance matching function, but also at ridges whose upper end is constantly at the same distance from the bottom on which this crest rests.
L'invention s'applique notamment à des guides WR22 et WR19, en particulier dans la bande 40-60 GHz. Elle s'applique également aux guides circulaires.The invention applies in particular to guides WR22 and WR19, in especially in the 40-60 GHz band. It also applies to guides circular.
Claims (11)
caractérisée en ce que lesdits points de contact (33, 34) sont en regard d'un même accès (35) prévu pour la mise en place de ladite liaison conductrice (32).Transition between a peak waveguide (10) and a planar circuit (30) on which a conductor (44) is provided, said transition comprising at least one conductive link (32) connecting the end of said peak to said conductor ( 44) between two contact points (33, 34),
characterized in that said contact points (33, 34) are opposite a same access (35) provided for the establishment of said conductive connection (32).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9611941 | 1996-10-01 | ||
| FR9611941A FR2754108B1 (en) | 1996-10-01 | 1996-10-01 | TRANSITION BETWEEN A CRETE WAVEGUIDE AND A PLANAR CIRCUIT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0834954A1 true EP0834954A1 (en) | 1998-04-08 |
Family
ID=9496229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97401936A Withdrawn EP0834954A1 (en) | 1996-10-01 | 1997-08-14 | Transition between a ridge wave guide and a planar circuit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5969580A (en) |
| EP (1) | EP0834954A1 (en) |
| JP (1) | JPH10126116A (en) |
| CA (1) | CA2215480A1 (en) |
| FR (1) | FR2754108B1 (en) |
| NO (1) | NO974484L (en) |
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| EP2201679A1 (en) * | 2007-09-11 | 2010-06-30 | ViaSat, Inc. | Low-loss interface |
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| US6077766A (en) * | 1999-06-25 | 2000-06-20 | International Business Machines Corporation | Variable thickness pads on a substrate surface |
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| FI20022257A (en) * | 2002-12-20 | 2004-06-21 | Elektrobit Oy | Method and arrangement for testing a radio device |
| US7068121B2 (en) * | 2003-06-30 | 2006-06-27 | Tyco Technology Resources | Apparatus for signal transitioning from a device to a waveguide |
| US7855612B2 (en) * | 2007-10-18 | 2010-12-21 | Viasat, Inc. | Direct coaxial interface for circuits |
| US7625131B2 (en) * | 2007-05-02 | 2009-12-01 | Viasat, Inc. | Interface for waveguide pin launch |
| US7812686B2 (en) * | 2008-02-28 | 2010-10-12 | Viasat, Inc. | Adjustable low-loss interface |
| US7782156B2 (en) * | 2007-09-11 | 2010-08-24 | Viasat, Inc. | Low-loss interface |
| DE102013108434B4 (en) * | 2013-08-05 | 2020-06-25 | Finetek Co., Ltd. | Horn antenna device and step-shaped signal feed device therefor |
| US11047951B2 (en) | 2015-12-17 | 2021-06-29 | Waymo Llc | Surface mount assembled waveguide transition |
| KR102674456B1 (en) * | 2017-01-26 | 2024-06-13 | 주식회사 케이엠더블유 | Transmission line - waveguide transition device |
| JP6839122B2 (en) | 2018-03-19 | 2021-03-03 | 日本電信電話株式会社 | High frequency connection structure |
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| EP0169048A2 (en) * | 1984-07-20 | 1986-01-22 | Nec Corporation | Ultra-high frequency switch |
| US4636753A (en) * | 1984-05-15 | 1987-01-13 | Communications Satellite Corporation | General technique for the integration of MIC/MMIC'S with waveguides |
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| JPS5567803A (en) * | 1978-11-14 | 1980-05-22 | Nec Corp | Programmable control circuit |
| JPH0326643Y2 (en) * | 1985-09-30 | 1991-06-10 | ||
| US5361049A (en) * | 1986-04-14 | 1994-11-01 | The United States Of America As Represented By The Secretary Of The Navy | Transition from double-ridge waveguide to suspended substrate |
| US4754239A (en) * | 1986-12-19 | 1988-06-28 | The United States Of America As Represented By The Secretary Of The Air Force | Waveguide to stripline transition assembly |
| JPH01202001A (en) * | 1988-02-08 | 1989-08-15 | Fujitsu Ltd | Coaxial waveguide converter |
| US5262739A (en) * | 1989-05-16 | 1993-11-16 | Cornell Research Foundation, Inc. | Waveguide adaptors |
| JPH03167902A (en) * | 1989-11-28 | 1991-07-19 | Toshiba Corp | Ridge waveguide-microstrip line converter |
-
1996
- 1996-10-01 FR FR9611941A patent/FR2754108B1/en not_active Expired - Fee Related
-
1997
- 1997-08-14 EP EP97401936A patent/EP0834954A1/en not_active Withdrawn
- 1997-09-29 NO NO974484A patent/NO974484L/en not_active Application Discontinuation
- 1997-09-30 US US08/941,672 patent/US5969580A/en not_active Expired - Fee Related
- 1997-09-30 CA CA002215480A patent/CA2215480A1/en not_active Abandoned
- 1997-10-01 JP JP9269015A patent/JPH10126116A/en active Pending
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| JPS59146201A (en) * | 1983-02-08 | 1984-08-22 | Yamagata Daigaku | Unbalanced type strip line matching device |
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| PATENT ABSTRACTS OF JAPAN vol. 8, no. 277 (E - 285)<1714> 18 December 1984 (1984-12-18) * |
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| WILLIAMS D A: "MILLIMETER-WAVE COMPONENTS AND SUBSYSTEMS BUILT USING MICROSTRIP TECHNOLOGY", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 39, no. 5, 1 May 1991 (1991-05-01), pages 768 - 774, XP000201471 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2201679A1 (en) * | 2007-09-11 | 2010-06-30 | ViaSat, Inc. | Low-loss interface |
| EP2201679B1 (en) * | 2007-09-11 | 2019-02-20 | ViaSat, Inc. | Low-loss interface |
| US8598966B2 (en) | 2008-03-13 | 2013-12-03 | Viasat, Inc. | Multi-level power amplification system |
| US9368854B2 (en) | 2008-03-13 | 2016-06-14 | Viasat, Inc. | Multi-level power amplification system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2754108A1 (en) | 1998-04-03 |
| CA2215480A1 (en) | 1998-04-01 |
| NO974484D0 (en) | 1997-09-29 |
| FR2754108B1 (en) | 1998-11-13 |
| JPH10126116A (en) | 1998-05-15 |
| NO974484L (en) | 1998-04-02 |
| US5969580A (en) | 1999-10-19 |
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