WO2011124350A1 - Koaxialleiterstruktur - Google Patents
Koaxialleiterstruktur Download PDFInfo
- Publication number
- WO2011124350A1 WO2011124350A1 PCT/EP2011/001583 EP2011001583W WO2011124350A1 WO 2011124350 A1 WO2011124350 A1 WO 2011124350A1 EP 2011001583 W EP2011001583 W EP 2011001583W WO 2011124350 A1 WO2011124350 A1 WO 2011124350A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductor
- tem
- mode
- band
- coaxial
- Prior art date
Links
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
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/06—Coaxial lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
Definitions
- the invention relates to a coaxial conductor structure for trouble-free
- the transmission quality of coaxial conductors for the TEM fundamental mode of RF signal waves decreases with increasing signal frequencies, especially since at higher frequencies by way of mode conversion processes along the coaxial line form undesirable, propagatable modes higher order, for example TEn, TE 2 i modes, etc ., Which overlap with the TEM fundamental mode.
- Rectangular waveguide based. No dispersion relations are calculated for the TEM and TEn modes.
- the coaxial conductor structure according to the invention is based on the recognition that the transmission behavior of coaxial lines for RF signal waves changes significantly, provided that electrically conductive connection structures are introduced between the outer and inner conductors at respectively periodically equidistant distances along the coaxial line.
- electrically conductive connection structures are introduced between the outer and inner conductors at respectively periodically equidistant distances along the coaxial line.
- Transmission range for the TEM fundamental mode is truncated compared to a conventional coaxial, however, this disadvantage can be used in a solution manner.
- the idea underlying the invention is based on the consideration that by a suitable choice of constructive design parameters for the formation of a coaxial line with electrically conductive connection structures between outer and inner conductors, a targeted or controlled influence on the frequency-dependent layers of the above-mentioned frequency bands is taken in such a way in that at least one frequency band in which the basic TEM mode is capable of propagation is overlapped with a frequency band or range in which all higher order excitation modes are evanescent.
- Outer conductor inner diameter Since surrounds, preferably equidistant radially surrounds, but also conceivable are to the circular shape approximate cross-sectional shapes, for example. With a n-sided peripheral contour, and
- Rod diameter D s are provided. Circular rods are preferably suitable in cross-section, however, the rod cross-sections can also be n-sided or similar.
- a lower cutoff frequency f u (TEM) of within one th band propagating TEM mode is equal to an upper limit frequency f 0 (TE) of the forming TEn mode in the mth band, and
- an upper limit frequency f 0 (TEM) of the inside of th band propagating TEM mode is equal to a lower limit frequency f u (TEn) of the within the (m + 1) -th band forming TEn mode.
- the frequency window capable of propagation can also be used successfully in a coaxial conductor structure in which the inner conductor and / or outer conductor cross-section of the coaxial line deviates from the circular shape but the same
- Characteristic impedance as the round coaxial line has.
- the outer and inner conductor cross-section can be formed n-angular. The further considerations, however, relate to each circular cross-sectional shapes.
- the cut-off frequency to higher To shift frequency values and in this way the first frequency band in which the TEM fundamental mode is single-mode capable of propagation, towards higher
- Frequency bands allow interference-free transmission characteristics exclusively for the TEM fundamental mode, just contribute the electrically conductive structures to a targeted cooling of the inner conductor, in particular in the
- electrically conductive connection structures preferably in the form of rod-shaped structures made of a metallic material, preferably from the material of which the inner and / or outer conductor consists, they have a high thermal conductivity.
- electrically conductive materials are suitable for these structures, which have a particularly high thermal conductivity.
- FIG. 1 representation of a portion of a solution trained
- FIG. 3 Diagram showing the Bloch impedance for TEM mode
- Fig. 4 diagram with all the dispersion relations up to a certain
- FIG. 1 shows a section of a solution-shaped coaxial conductor structure.
- the section represents a kind of unit cell for building a
- Coaxial line which is characterized ultimately by a periodic return of the illustrated section.
- Outer conductor AL which has an outer conductor inner diameter Da, is an inner conductor IL of length p with a circular conductor cross-section and a
- Inner conductor diameter Di introduced. Center to the longitudinal extension p of the
- the rod-shaped structures S are made of an electric and highly thermally conductive material, preferably metal, produced, particularly preferably from the same material from which the inner or outer conductor are made.
- the structures S may have a circular or n-shaped cross section. For the further mathematical consideration, it is assumed that the structures have a diameter Ds.
- Angular offset ⁇ are arranged offset.
- the symmetrical unit cell shown in FIG. 1 has the advantage that its input impedances at input E and output A are the same.
- the cell consists of two lines L1, L2 with the impedance
- W is Odej s DJE number of radial rods.
- the individual sections of the unit cell, L1, L, L2, can be described by ABCD matrices, which can be simply switched one after the other by matrix multiplication.
- the ABCD matrix of line L1, L2 is given by
- bands B and band gaps BL are generated by the periodic shunt inductance.
- bands B is a TEM wave
- the wave is evanescent and is attenuated.
- the TEM dispersion is fully characterized and can be tailored depending on the geometry. Typically, one will use a band for transmission so that the actual usable frequency range is significantly greater than the required one. This allows manufacturing tolerances
- the so-called Bloch impedance Z B is the effective impedance of the periodic line - it is the input impedance of an infinitely long periodic structure. So that the periodic structure can be connected to a conventional coaxial line with the characteristic impedance Z w possible reflection-free, ZB should be as close as possible to Z w .
- the Bloch impedance can be calculated from the voltage and current of an elementary cell at periodic boundary conditions, ie the two components of the eigenvector of the eigenvalue problem (4):
- Impedance of undisturbed coaxial line ZTEM can deviate, the illustrated in Figure 3 diagram.
- a periodic structure will be designed so that
- Transmission range B the amount of reflection remains smaller than a
- the TE11 mode can be modeled similar to the TEM fundamental mode described above, especially as the structure of the unit cell and the associated
- Cutoff frequencies (x u , Xo) of the TEM and TE11 bands are the same
- the quintessence is thus:
- the dispersions of TEM and TE11 modes in periodic structures with four interconnect structures are very close to each other connected.
- the only parameter that allows for individual influencing of both modes is the cut-off frequency fco of the TE11 mode in the coaxial line, which shifts the TE11 bands upwards.
- Cutoff frequencies of TEM and TEn ribbons represented by 4-bar geometries:
- Frequency range FB from 5.4 to 5.9 GHz.
- the TEM band used should be as wide as possible and at the same time the TE11 band gap as wide as possible. But since you do not have the TEM mode, as shown above
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguides (AREA)
- Communication Cables (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180016706.1A CN102823056B (zh) | 2010-03-30 | 2011-03-29 | 同轴导体结构 |
ES11718269.1T ES2491105T3 (es) | 2010-03-30 | 2011-03-29 | Estructura de conductores coaxiales |
US13/635,114 US9083067B2 (en) | 2010-03-30 | 2011-03-29 | Coaxial conductor structure |
AU2011238158A AU2011238158B9 (en) | 2010-03-30 | 2011-03-29 | Coaxial conductor structure |
EP11718269.1A EP2553757B1 (de) | 2010-03-30 | 2011-03-29 | Koaxialleiterstruktur |
KR1020127024948A KR101541584B1 (ko) | 2010-03-30 | 2011-03-29 | 동축 도체 구조물 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010013384A DE102010013384A1 (de) | 2010-03-30 | 2010-03-30 | Koaxialleiterstruktur |
DE102010013384.1 | 2010-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011124350A1 true WO2011124350A1 (de) | 2011-10-13 |
Family
ID=44262968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/001583 WO2011124350A1 (de) | 2010-03-30 | 2011-03-29 | Koaxialleiterstruktur |
Country Status (8)
Country | Link |
---|---|
US (1) | US9083067B2 (de) |
EP (1) | EP2553757B1 (de) |
KR (1) | KR101541584B1 (de) |
CN (1) | CN102823056B (de) |
AU (1) | AU2011238158B9 (de) |
DE (1) | DE102010013384A1 (de) |
ES (1) | ES2491105T3 (de) |
WO (1) | WO2011124350A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012006362B4 (de) * | 2012-03-29 | 2014-05-22 | Kathrein-Werke Kg | Verfahren und Vorrichtung zur Übertragung von Daten mit hohen Datenraten auf Koaxialleitungen |
DE102021124509A1 (de) | 2021-09-22 | 2023-03-23 | Spinner Gmbh | Koaxialleiterstruktur sowie deren Verwendung als breitbandiger Modenreflektor |
CN114023507A (zh) * | 2021-11-11 | 2022-02-08 | 上海天诚通信技术股份有限公司 | 同轴线缆、高速直连线缆以及高速直连线缆的制作工艺 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659232A (en) * | 1970-02-24 | 1972-04-25 | Rca Corp | Transmission line filter |
US20040140862A1 (en) * | 2001-12-03 | 2004-07-22 | Memgen Corporation | Miniature RF and microwave components and methods for fabricating such components |
US20080150649A1 (en) * | 2006-12-22 | 2008-06-26 | Georg Fischer | Coaxial metamaterial structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4151494A (en) * | 1976-02-10 | 1979-04-24 | Murata Manufacturing Co., Ltd. | Electrical filter |
GB1568255A (en) | 1976-02-10 | 1980-05-29 | Murata Manufacturing Co | Electrical filter |
US4223287A (en) * | 1977-02-14 | 1980-09-16 | Murata Manufacturing Co., Ltd. | Electrical filter employing transverse electromagnetic mode coaxial resonators |
JPS6218965Y2 (de) * | 1980-01-24 | 1987-05-15 | ||
JP2000059108A (ja) * | 1998-08-06 | 2000-02-25 | Sumitomo Heavy Ind Ltd | 同軸型導波管 |
JP2005532015A (ja) * | 2002-06-27 | 2005-10-20 | マイクロファブリカ インク | 小型のrfおよびマイクロ波の構成要素とそのような構成要素を製造するための方法 |
US9666926B2 (en) * | 2009-09-30 | 2017-05-30 | Panasonic Corporation | Power supply line for high-frequency current, manufacturing method for same, and power supply line holding structure |
-
2010
- 2010-03-30 DE DE102010013384A patent/DE102010013384A1/de not_active Withdrawn
-
2011
- 2011-03-29 CN CN201180016706.1A patent/CN102823056B/zh active Active
- 2011-03-29 AU AU2011238158A patent/AU2011238158B9/en active Active
- 2011-03-29 WO PCT/EP2011/001583 patent/WO2011124350A1/de active Application Filing
- 2011-03-29 EP EP11718269.1A patent/EP2553757B1/de active Active
- 2011-03-29 US US13/635,114 patent/US9083067B2/en active Active
- 2011-03-29 KR KR1020127024948A patent/KR101541584B1/ko active IP Right Grant
- 2011-03-29 ES ES11718269.1T patent/ES2491105T3/es active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3659232A (en) * | 1970-02-24 | 1972-04-25 | Rca Corp | Transmission line filter |
US20040140862A1 (en) * | 2001-12-03 | 2004-07-22 | Memgen Corporation | Miniature RF and microwave components and methods for fabricating such components |
US20080150649A1 (en) * | 2006-12-22 | 2008-06-26 | Georg Fischer | Coaxial metamaterial structure |
Non-Patent Citations (2)
Title |
---|
DOUGLAS E. MODE: "Spurious Modes in Coaxial Transmission Line Filters", PROCEEDINGS OF THE I.R.E, vol. 38, 1950, pages 176 - 180 |
DOUGLAS E. MODE: "Spurious modes in coaxial transmission line filters", PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, vol. 38, 1 February 1950 (1950-02-01), USA, pages 176 - 180, XP055003221, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/ielx5/10933/35834/01701195.pdf?tp=&arnumber=1701195&isnumber=35834> [retrieved on 20110720] * |
Also Published As
Publication number | Publication date |
---|---|
EP2553757B1 (de) | 2014-05-14 |
EP2553757A1 (de) | 2013-02-06 |
CN102823056B (zh) | 2014-11-26 |
KR101541584B1 (ko) | 2015-08-03 |
AU2011238158B9 (en) | 2015-01-15 |
US20130015927A1 (en) | 2013-01-17 |
CN102823056A (zh) | 2012-12-12 |
US9083067B2 (en) | 2015-07-14 |
AU2011238158B2 (en) | 2014-11-06 |
DE102010013384A1 (de) | 2011-10-06 |
AU2011238158A1 (en) | 2012-09-27 |
ES2491105T3 (es) | 2014-09-05 |
KR20130054233A (ko) | 2013-05-24 |
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