EP1251579A1 - Koplanare Wellenleitung mit niedrigem Wellenwiderstand auf Siliziumträger unter Verwendung eines Materials mit hoher Dielektrizitätskonstanten - Google Patents
Koplanare Wellenleitung mit niedrigem Wellenwiderstand auf Siliziumträger unter Verwendung eines Materials mit hoher Dielektrizitätskonstanten Download PDFInfo
- Publication number
- EP1251579A1 EP1251579A1 EP02360073A EP02360073A EP1251579A1 EP 1251579 A1 EP1251579 A1 EP 1251579A1 EP 02360073 A EP02360073 A EP 02360073A EP 02360073 A EP02360073 A EP 02360073A EP 1251579 A1 EP1251579 A1 EP 1251579A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- high dielectric
- dielectric constant
- carrier
- ceramic piece
- conductor strips
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title description 5
- 229910052710 silicon Inorganic materials 0.000 title description 5
- 239000010703 silicon Substances 0.000 title description 5
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 239000000919 ceramic Substances 0.000 claims description 33
- 238000001465 metallisation Methods 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/003—Coplanar lines
Definitions
- the invention relates to a coplanar waveguide based on a carrier arranged parallel, from each other an electrically insulating space having conductor strips.
- the is Wave resistance depends on the distance between the conductor strips. In one case, such as. however, the following may be the one for a desired low one Wave resistance required small distance can not be realized.
- a circuit is required to compensate for the parasitic capacitance of the laser, to increase bandwidth.
- This compensation circuit requires a short transmission line with a for coplanar thin film technology low impedance (characteristic impedance) of e.g. B. 15 ohms.
- Characteristic impedance characteristic impedance
- Such a low one Impedance cannot be realized as a coplanar waveguide because of of the small gaps that would be required between the conductor strips would have to be less than the technically smallest possible distance (critical distance) become.
- the invention has for its object in a device of the beginning described way to create a way with simple means one To provide line section with a low impedance.
- This object is achieved according to the invention in that on the conductor strip on its side facing away from the carrier a material with high Dielectric constant is arranged.
- the material with high dielectric constants is preferably in close contact held with the conductor strips, whereby air gaps are kept very small can and the arrangement is well defined.
- the high dielectric constant material that any suitable material in any can be suitable shape and preferably be a ceramic piece and can in particular have the shape of a plate has a sufficiently high Dielectric constant to achieve a low impedance sufficient high capacity.
- the relative Dielectric constant 65 to get the desired relatively low Wave resistance in the area of the plate or the ceramic piece in the coplanar Generate line.
- This low impedance arises from the fact that the ceramic piece acts between the conductors of the coplanar line Capacity compared to the state in which the ceramic piece is not present, is increased.
- the ceramic piece is on top of the conductors of the coplanar line attached, so the conductors of the coplanar line are between the carrier this line, the z. B. consists of (high-resistance) silicon, and Ceramic piece. It may suffice in other applications to enlarge the Capacitance a material with a relative dielectric constant of only about 10 to use.
- the conductor strip opposite side of the material with high dielectric constant electrically conductive is formed is preferably provided with a metallization.
- the advantage consists in the fact that the metallization increases the capacity Effect of the ceramic piece is increased because of the field strength in the ceramic piece is enlarged by shortening the field lines.
- the length is high on the material Dielectric constant is applied, or the length of the material with high Dielectric constants shorter than 4.
- Waveguide according to one of the previous claims characterized in that the length on which Material with a high dielectric constant is applied, or the length of the Material with a high dielectric constant is shorter than the stripline.
- the length on which Material with a high dielectric constant is applied, or the length of the Material with a high dielectric constant is shorter than the stripline.
- the known arrangement 30 according to FIG. 3 has a carrier 2 made of high-resistance silicon, which instead can also consist of aluminum oxide (Al 2 O 3 ).
- a carrier 2 made of high-resistance silicon, which instead can also consist of aluminum oxide (Al 2 O 3 ).
- conductor strips 5, 6 and 7 running parallel to one another are arranged in one plane (coplanar), the conductor strip 5 lying between the other two conductor strips.
- the conductor strips 5, 6 and 7 (formed by metal strips) of the example form a strip line together with the carrier 2, the conductor strips 6 and 7 usually forming the outer conductor.
- the exemplary embodiment of the invention shown in FIG. 1 is a waveguide 1 which differs from the arrangement according to FIG. 3 only in that on the side of the conductor strips 5 to 7 facing away from the carrier 2, projecting laterally, a ceramic piece 20 is placed and fastened is.
- the attachment is made in the example by gluing, for which purpose adhesive 22 in the edge region of the ceramic piece 20 connects it to the top of the carrier 2.
- a rear-side metallization 25 is also applied to the side of the ceramic piece 20 facing away from the conductor strips 5, 6 and 7.
- the carrier 2 consists of high-resistance silicon and, in other embodiments, consists of Al 2 O 3
- metallization 25 is omitted.
- the ceramic piece 20 consists at least in large part, in the example exclusively, from a ceramic material with a large relative Dielectric constant, in the example this has the value 65.
- the Dielectric constant of the ceramic piece is therefore multiplied by 65 Dielectric constant of the vacuum.
- the effective capacity between the conductor strips 5, 6 and 7 increased compared to the state without ceramic piece 20. If the Metallization 25 is not present, so the field lines run from the middle Conductor strips to the two outer conductor strips 6 and 7 within the Ceramic piece 20 in the form of the known electrical field lines arcuate, that is with a noticeable component in the horizontal direction in Fig. 1. The field lines thus have a relatively long length.
- the metallization 25 is on the upper side of the ceramic piece 20 applied, the field lines run within the ceramic piece of each of the individual conductor strips 5, 6 and 7 largely at right angles to the level of the arrangement of lines 5 to 7, in Fig. 1 so in the direction perpendicular to the plane Metallization 25 because the metallization 25 is roughly the same Has potential across its width in the cross-sectional plane shown. It understands for the person skilled in the art that with a very large thickness of the ceramic piece (or large Distance of the metallization from the level of the conductor strips) the effect of the Metallization 25 can no longer be determined. Especially with smaller thicknesses of Ceramic piece 20 that can still be easily manufactured and handled safely , the metallization 25 can markedly increase the achievable Achieve capacity because the field lines as outlined above compared to the case the absence of the metallization 25 are shortened.
- the adhesive 22 lies in both of the exemplary embodiments described with reference to FIG. 1 practically not in the electrical field, and therefore does not have to have special RF properties the adhesive, e.g. low dielectric losses become. There is an introduction of adhesive between the carrier and the ceramic piece however also possible, but must be taken into account in the electrical behavior.
- the length of the ceramic plate 2 is limited, so it only causes a limited length range of the stripline a reduction in Wave resistance.
- the ceramic piece is a plane-parallel plate that causes a sudden jump in the line impedance.
- this can be done by Bevel the end edges of the ceramic piece (forming a wedge angle to the Top of the ceramic piece) and / or tapering the width of the metallization (in horizontal direction in Fig. 1) or similarly advantageous in inventive Way to be achieved.
- a particular advantage of the invention is that the manufacture is simple, This is because the ceramic piece is in the same way as others Components, e.g. B. can be attached by gluing. That way be avoided that used to manufacture the substrate Technology needs to change to a more complicated process, e.g. B. Thin film multilayer technology must apply.
- the following dimensions and other data are selected: length, width and thickness of the carrier 2: 6 mm ⁇ 3 mm ⁇ 0.5 mm length, width and thickness of the ceramic piece 20: 1.2 mm ⁇ 0.8 mm ⁇ 0.1 mm Ceramic piece material: Product H09CG060EXNX from Dielectric Laboratories Inc., in Cazenovia, NY 13035, USA. Thickness and material of the metallization 25: 1 ⁇ m gold Thickness, width, material of the strip lines 5, 6, 7: 1 ⁇ m x 100 ⁇ m gold, the outer striplines can be wider.
- the ceramic piece (ceramic plate) by gluing
- the ceramic plate equipped in this way becomes precise suitably placed on the stripline and by soldering or welding with it connected.
Landscapes
- Structure Of Printed Boards (AREA)
- Waveguides (AREA)
Abstract
Description
Inc., in Cazenovia, NY 13035, USA.
Dicke und Material der Metallisierung 25: 1µm Gold
Dicke, Breite, Material der Streifenleitungen 5, 6, 7:1µm x 100µm Gold,
wobei die äußeren Streifenleitungen breiter sein können.
Claims (7)
- Coplanare Wellenleitung, die auf einem Träger (2) angeordnete parallele, von einander einen elektrisch isolierenden Zwischenraum (8) aufweisende Leiterstreifen (5, 6, 7) aufweist,
dadurch gekennzeichnet, dass auf den Leiterstreifen auf ihrer dem Träger abgewandten Seite ein Material mit hoher Dielektrizitätskonstanten angeordnet ist. - Wellenleitung nach Anspruch 1, dadurch gekennzeichnet, dass das Material mit hoher Dielektrizitätskonstanten (20) in dichtem Kontakt mit den Leiterstreifen (5, 6, 7) gehalten ist.
- Wellenleitung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die den Streifenleitern abgewandte Seite des Materials mit hoher Dielektrizitätskonstanten elektrisch leitend ausgebildet ist, vorzugsweise mit einer Metallisierung (25) versehen ist.
- Wellenleitung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Länge, auf der Material mit hoher Dielektrizitätskonstanten aufgebracht ist, bzw. die Länge des Materials mit hoher Dielektrizitätskonstanten kürzer ist als die Streifenleitung.
- Wellenleitung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Material mit hoher Dielektrizitätskonstanten eine relative Dielektrizitätskonstante von mindestens etwa 10 hat.
- Wellenleitung nach Anspruch 5, dadurch gekennzeichnet, dass die relative Dielektrizitätskonstante etwa 65 beträgt.
- Wellenleitung nach Anspruch 6, dadurch gekennzeichnet, dass das Material mit hoher Dielektrizitätskonstanten im wesentlichen eine Keramik der Fa. Dielectric Laboratories Inc. ist mit der Produktbezeichnung H09CG060EXNX ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10119717 | 2001-04-21 | ||
| DE10119717A DE10119717A1 (de) | 2001-04-21 | 2001-04-21 | Coplanare Wellenleitung mit niedrigem Wellenwiderstand auf Siliziumträger unter Verwendung eines Materials mit hoher Dielektrizitätskonstanten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1251579A1 true EP1251579A1 (de) | 2002-10-23 |
Family
ID=7682320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02360073A Withdrawn EP1251579A1 (de) | 2001-04-21 | 2002-02-26 | Koplanare Wellenleitung mit niedrigem Wellenwiderstand auf Siliziumträger unter Verwendung eines Materials mit hoher Dielektrizitätskonstanten |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6677838B2 (de) |
| EP (1) | EP1251579A1 (de) |
| DE (1) | DE10119717A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005012642A1 (de) * | 2005-03-18 | 2006-10-05 | Dirks, Christian, Prof. | Energiespeicher zur Stützung der Versorgungsspannung einer integrierten Schaltung |
| US10584933B2 (en) * | 2016-03-17 | 2020-03-10 | Keith A. Lagenbeck | Firearm barrel cooling system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63238701A (ja) * | 1987-03-26 | 1988-10-04 | A T R Koudenpa Tsushin Kenkyusho:Kk | マイクロ波線路 |
| US5694134A (en) * | 1992-12-01 | 1997-12-02 | Superconducting Core Technologies, Inc. | Phased array antenna system including a coplanar waveguide feed arrangement |
| US6216020B1 (en) * | 1996-05-31 | 2001-04-10 | The Regents Of The University Of California | Localized electrical fine tuning of passive microwave and radio frequency devices |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4216450A (en) * | 1978-11-01 | 1980-08-05 | Bell Telephone Laboratories, Incorporated | Millimeter waveguide shorts |
-
2001
- 2001-04-21 DE DE10119717A patent/DE10119717A1/de not_active Withdrawn
-
2002
- 2002-02-26 EP EP02360073A patent/EP1251579A1/de not_active Withdrawn
- 2002-04-05 US US10/115,925 patent/US6677838B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63238701A (ja) * | 1987-03-26 | 1988-10-04 | A T R Koudenpa Tsushin Kenkyusho:Kk | マイクロ波線路 |
| US5694134A (en) * | 1992-12-01 | 1997-12-02 | Superconducting Core Technologies, Inc. | Phased array antenna system including a coplanar waveguide feed arrangement |
| US6216020B1 (en) * | 1996-05-31 | 2001-04-10 | The Regents Of The University Of California | Localized electrical fine tuning of passive microwave and radio frequency devices |
Non-Patent Citations (5)
| Title |
|---|
| BEDAIR S S ET AL: "FAST, ACCURATE AND SIMPLE APPROXIMATE ANALYTIC FORMULAS FOR CALCULATING THE PARAMETERS OF SUPPORTED COPLANAR WAVEGUIDES FOR (M)MIC'S", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE INC. NEW YORK, US, vol. 40, no. 1, 1992, pages 41 - 48, XP000244295, ISSN: 0018-9480 * |
| HUANG J-W ET AL: "CHARACTERISTICS OF DIELECTRIC-LINE-LOADED CONDUCTOR-BACKED SLOTLINE(CBS)", IEEE MICROWAVE AND GUIDED WAVE LETTERS, IEEE INC, NEW YORK, US, vol. 4, no. 7, 1 July 1994 (1994-07-01), pages 250 - 252, XP000456924, ISSN: 1051-8207 * |
| LIU Y ET AL: "ELIMINATION OF RESONANCE IN FINITE-WIDTH CONDUCTOR-BACKED COPLANAR WAVEGUIDES", 24TH. EUROPEAN MICROWAVE CONFERENCE PROCEEDINGS. CANNES, SEPT. 5 - 8, 1994, EUROPEAN MICROWAVE CONFERENCE PROCEEDINGS, NEXUS BUSINESS COMMUNICATIONS, GB, vol. 2 CONF. 24, 5 September 1994 (1994-09-05), pages 1222 - 1226, XP000678217, ISBN: 0-9518-0325-5 * |
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 044 (E - 710) 31 January 1989 (1989-01-31) * |
| TANABE M ET AL: "A LOW-IMPEDANCE COPLANAR WAVEGUIDE USING AN SRTIO3 THIN FILM FOR GAAS POWER MMIC'S", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE INC. NEW YORK, US, vol. 48, no. 5, May 2000 (2000-05-01), pages 872 - 874, XP000931526, ISSN: 0018-9480 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US6677838B2 (en) | 2004-01-13 |
| DE10119717A1 (de) | 2002-10-24 |
| US20020153974A1 (en) | 2002-10-24 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18W | Application withdrawn |
Effective date: 20050112 |