WO2001011713A1 - Hohlleiterübergang - Google Patents
Hohlleiterübergang Download PDFInfo
- Publication number
- WO2001011713A1 WO2001011713A1 PCT/IB2000/001177 IB0001177W WO0111713A1 WO 2001011713 A1 WO2001011713 A1 WO 2001011713A1 IB 0001177 W IB0001177 W IB 0001177W WO 0111713 A1 WO0111713 A1 WO 0111713A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waveguide
- gates
- section
- waveguide transition
- cross
- Prior art date
Links
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
- H01P5/082—Transitions between hollow waveguides of different shape, e.g. between a rectangular and a circular waveguide
Definitions
- the present invention relates to a waveguide transition for the low-reflection transmission of electromagnetic energy between the basic wave type of a rectangular waveguide with a clear cross-section and the basic wave type of an elliptical waveguide, which allows the propagation of the fundamental wave type and of higher wave types, with a longitudinal channel that extends to at least a part of its length permits the propagation of higher wave types and which comprises a plurality of stages of different cross-sections which are successive in the direction of transmission, and mtm mergers opening into the longitudinal channel for coupling to higher wave types of the elliptical waveguide.
- Such a waveguide transition is known from DE 38 36 545 C2.
- Such waveguide passages are used for high-frequency transmission links in which e ne high-frequency wave with low attenuation must be transmitted over long distances.
- Waveguides with a clear cross-section that is, waveguides in which an electromagnetic wave of a given frequency is only of the basic wave type. is suitable for a large number of transmission purposes, since it excludes the excitation of standing waves of higher wave types, which can significantly impair the transmission of a transmission path for certain frequencies.
- Such clear waveguides in turn have a significantly higher attenuation than waveguides with a correspondingly larger cross section, so that the latter are preferred for low-loss transmission over longer distances.
- honing conductors also referred to here as transport waveguides
- transport waveguides usually have an elliptical cross section, since they not only have lower damping than rectangular waveguides, but also have particularly good laying and handling properties, so that entire waveguide trains with curvatures are built up from one part can be.
- the present invention creates a waveguide transition of the type mentioned at the outset, in which the higher wave types occurring in the m overmodulated waveguide train are effectively coupled. This is the only way to almost completely dampen these higher shaft types. This advantage is achieved by providing elliptical-like steps in the overmodified section of the transition, causing reflections and thus a non-optimal coupling of the higher wave types that occur during a transition from a rectangular to an elliptical cross section, since the wave types are not congruent (we here the known transition) can be avoided.
- transition to the elliptical cross section of the transport waveguide takes place over several stages, the number of wave types which can be expanded increasing at each stage depending on its cross-sectional dimensions.
- the waveguide gates that are perpendicular to the axis of the transition are fmden and are closed with absorbers, preferably arranged in one step.
- the cross-sections of the individual transformation stages are selected so that the short-circuit planes of the wave types, which are oriented towards the waveguide gates, whose large cross-sectional dimension is oriented transversely to the transition axis, are at a distance of not more than 1 / ⁇ of their waveguide wavelength have these gates, and that the short-circuit planes of the wave types, the vertical waveguide gate, the large dimension of which is along the axis of the transition, have a distance of 1/8 to 3/8 of their waveguide wavelength (preferably about ⁇ ) z this gate.
- the result of such a placement is that the higher wave types of the transport waveguide are effectively coupled.
- the waveguide transition preferably has two gates elongated perpendicular to its axis, which are spaced apart in the direction of the major axis of the elliptical cross section. Two waveguide channels can be connected to these two gates, each of which is connected to the arms of a T-piece.
- Such a construction allows a second wave type, independent of the basic wave type, to be coupled to the transport waveguide, by means of which a second signal, decoupled from the signal of the basic wave type, can additionally be transmitted with the transport waveguide.
- At least one of the gates is adjoined by a chamber which contains a damping material for damping the coupled-in shaft types.
- the waveguide transition can be produced in a simple manner by milling the longitudinal channel with a tool guided parallel to the longitudinal axis of the waveguide transition. This makes it possible to keep the number of parts of the waveguide transition low and thus avoid sealing problems.
- the tightness of the waveguide transition is important because waveguide systems are generally operated with a slight overpressure in order to prevent their function from being impaired by the penetration of moisture.
- the waveguide transition according to the invention can be made entirely from one piece by milling the gates with a tool guided perpendicular to the longitudinal axis of the waveguide transition.
- the waveguide transition can comprise two pieces which abut one another on a surface which intersects the gates. In this way, the length and number of seals required are kept low and sealing problems are avoided.
- Figures 1 to 3 show the waveguide transition according to a first embodiment m two side views and a plan view in the axial direction;
- FIG. 4 shows a plan view in the axial direction of a second embodiment of the waveguide transition.
- FIG. 1 a first embodiment of the waveguide transition m is shown in a side view.
- a rectangular waveguide 1 with a clear cross-section (only the basic wave type H10 is capable of spreading) is followed by the transition with three steps 3, 4, 5, the elliptical cross section of which increases from the rectangular waveguide 1.
- the cross-section of the narrowest step is 3 Sicti is followed by a stage 6, which forms a five-gate junction with three waveguides 10, 11, 12 opening perpendicular to the direction of propagation of the high-frequency wave or to axis 7, as can be seen in particular in the partially plan view of FIG ⁇
- the gates 10, 11, 12 that are perpendicular to the axis of the transition have a clear cross section for the useful frequency range, that is to say that only the corresponding basic wave type (H10) can be propagated in the waveguide sections 100, 110, 120 that adjoin the gates.
- the waveguide gates 10, 11 are spaced apart in the direction of the long main axis of the elliptical cross section compared to the sectional plane shown in FIG.
- the broad sides of these waveguide gates 10,11 are parallel to the small main axis. Therefore, the higher vibration types of the elliptical waveguide, which have wall currents along the area of the gates along the direction of propagation, such as Hs11, Hs21, EC01, Ec11, couple the H " 0 wave type of these waveguide gates 10,11.
- steps 3, 4, 5 are selected such that short-circuit planes are obtained for each of these wave types, whose distance from the sectional plane of FIG. 2 is less than 1/6 of the waveguide wavelength of the corresponding wave type St.
- Duron Appropriate choice of the dimensions of stages 3 to 6 can be achieved so that the cut-off wavelengths of individual of these wave types and consequently their farthing levels coincide.Thus it is possible to effectively target the most important of these wave types by optimizing the dimensions of a small number of stages to gates 10, 1 1 to pair.
- a third gate 12 is arranged on the short main point of the elliptical shape of stage 6, the broad side of this gate extends in the axial direction of the transition.
- the Hl 0 wave type of this gate couples wave types that induce wall currents transverse to the direction of propagation, such as Hc21, Hs11. In these types of waves it is a prerequisite for effective coupling that the short-circuit plane is at a distance of approximately 1/8 to 3/8, preferably the waveguide wavelength of the corresponding type of shaft from the gate 12.
- the side gates are in the area of the last transformation stage of transition to the elliptical waveguide. This means that there are few reflections for the higher shaft types that can arise in the transport waveguide, which means that they can be effectively coupled to the corresponding side waveguide gates. This last stage of the transition could also be congruent with the adjoining transport waveguide, so as to avoid even slight reflections at the border to the transport waveguide 2.
- the gates 10, 11, 12 are each connected to chambers 100, 110, 120 with the same cross-section as the gates. These chambers contain an absorbent material which dampens the electromagnetic energy of the higher wave types coupled into the chambers.
- FIG. 3 shows the waveguide transition with the adjoining waveguides 1, 2 and the orientation of the gates in a further perspective.
- a plan view from the direction of the rectangular waveguide 1, the chambers 100, 110 are replaced by rectangular waveguides 101, 111, the cross section of which corresponds to that of the gates 10, 11, and which are joined together at a T-piece 13 to form a uniform conductor 14 ,
- the waveguides 101, 111 have the same lengths and a clear cross-section, on which only the H10 vibration type can propagate.
- An electromagnetic wave fed into the connecting gate 14 is divided by the T-branching m into two parts of equal size.
- the arrangement then results at the locations of the gates 10, 11 opposite wall currents parallel to the axis of the transition, which couple the Ec01 shaft type of the overmodified transport waveguide 2.
- the Hc11 basic wave type is decoupled because it only has wall currents in the area of the gates 10, 11 perpendicular to the direction of expansion. It is thus possible to specifically excite the wave type Ec01 of the overmodulated waveguide via the waveguide 14 and to tap the excited oscillation again at a correspondingly constructed transition at the other end of the overmodulated waveguide 2.
- the waveguide 2 can be used for the simultaneous, interaction-free transmission of two night channels, each of which is modulated onto one of the two wave types.
- the waveguide transition is easily produced by milling.
- the longitudinal channel can be created, for example, with the aid of a milling head, which is from the side of the largest step 6 a one-piece blank is inserted and successively milled out the individual stages. Then the gates are cut and milled from the sides and the chambers 100, 110, 120 or the waveguide 101, 111 are mounted thereon in an airtight manner.
- the transition can also be produced from two pieces which border one another on a plane running through the gates 10, 11, 12, for example the plane of the section m in FIG. In this case, it is possible to mill the chambers 10, 11, 12 on one of the two pieces from the solid in each case from said plane and then to connect them airtight.
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Medicines Containing Plant Substances (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Optical Integrated Circuits (AREA)
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT00953362T ATE233958T1 (de) | 1999-08-10 | 2000-08-10 | Hohlleiterübergang |
EP00953362A EP1206812B1 (de) | 1999-08-10 | 2000-08-10 | Hohlleiterübergang |
AU65873/00A AU6587300A (en) | 1999-08-10 | 2000-08-10 | Wave guide adapter |
US10/049,175 US6661305B1 (en) | 1999-08-10 | 2000-08-10 | Wave guide adapter |
DE50001416T DE50001416D1 (de) | 1999-08-10 | 2000-08-10 | Hohlleiterübergang |
NO20020653A NO20020653L (no) | 1999-08-10 | 2002-02-08 | Bölgelederadapter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19937725.1 | 1999-08-10 | ||
DE19937725A DE19937725A1 (de) | 1999-08-10 | 1999-08-10 | Hohlleiterübergang |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001011713A1 true WO2001011713A1 (de) | 2001-02-15 |
Family
ID=7917842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2000/001177 WO2001011713A1 (de) | 1999-08-10 | 2000-08-10 | Hohlleiterübergang |
Country Status (8)
Country | Link |
---|---|
US (1) | US6661305B1 (de) |
EP (1) | EP1206812B1 (de) |
CN (1) | CN1378711A (de) |
AT (1) | ATE233958T1 (de) |
AU (1) | AU6587300A (de) |
DE (2) | DE19937725A1 (de) |
NO (1) | NO20020653L (de) |
WO (1) | WO2001011713A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7893789B2 (en) * | 2006-12-12 | 2011-02-22 | Andrew Llc | Waveguide transitions and method of forming components |
CN102709659A (zh) * | 2012-06-19 | 2012-10-03 | 成都赛纳赛德科技有限公司 | 一种矩形波导阻抗变换器 |
WO2015076885A1 (en) * | 2013-11-19 | 2015-05-28 | Commscope Technologies Llc | Modular feed assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3750183A (en) * | 1970-12-22 | 1973-07-31 | Thomson Csf | Multimode antenna system |
US4540959A (en) * | 1983-11-22 | 1985-09-10 | Andrew Corporation | Rectangular to elliptical waveguide connection |
EP0189963A2 (de) * | 1985-01-30 | 1986-08-06 | Andrew A.G. | Superelliptische Wellenleiterverbindung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5583468A (en) * | 1995-04-03 | 1996-12-10 | Motorola, Inc. | High frequency transition from a microstrip transmission line to an MMIC coplanar waveguide |
DE19716290A1 (de) * | 1997-04-18 | 1998-10-29 | Bosch Gmbh Robert | Richtkoppler |
DE19856339A1 (de) * | 1998-12-07 | 2000-06-08 | Bosch Gmbh Robert | Mikrowellen-Koppelelement |
-
1999
- 1999-08-10 DE DE19937725A patent/DE19937725A1/de not_active Withdrawn
-
2000
- 2000-08-10 US US10/049,175 patent/US6661305B1/en not_active Expired - Lifetime
- 2000-08-10 AT AT00953362T patent/ATE233958T1/de not_active IP Right Cessation
- 2000-08-10 CN CN00814106A patent/CN1378711A/zh active Pending
- 2000-08-10 DE DE50001416T patent/DE50001416D1/de not_active Expired - Lifetime
- 2000-08-10 WO PCT/IB2000/001177 patent/WO2001011713A1/de active IP Right Grant
- 2000-08-10 AU AU65873/00A patent/AU6587300A/en not_active Abandoned
- 2000-08-10 EP EP00953362A patent/EP1206812B1/de not_active Expired - Lifetime
-
2002
- 2002-02-08 NO NO20020653A patent/NO20020653L/no unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3750183A (en) * | 1970-12-22 | 1973-07-31 | Thomson Csf | Multimode antenna system |
US4540959A (en) * | 1983-11-22 | 1985-09-10 | Andrew Corporation | Rectangular to elliptical waveguide connection |
EP0189963A2 (de) * | 1985-01-30 | 1986-08-06 | Andrew A.G. | Superelliptische Wellenleiterverbindung |
Also Published As
Publication number | Publication date |
---|---|
EP1206812B1 (de) | 2003-03-05 |
DE50001416D1 (de) | 2003-04-10 |
ATE233958T1 (de) | 2003-03-15 |
EP1206812A1 (de) | 2002-05-22 |
NO20020653L (no) | 2002-04-10 |
DE19937725A1 (de) | 2001-02-15 |
AU6587300A (en) | 2001-03-05 |
NO20020653D0 (no) | 2002-02-08 |
CN1378711A (zh) | 2002-11-06 |
US6661305B1 (en) | 2003-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69509930T2 (de) | Dielektrisches Filter | |
EP1004149B1 (de) | Hohlleiterfilter | |
DE69711476T2 (de) | Dielektrischer Resonator | |
DE102005047336A1 (de) | Hohlleiter-Bandstoppfilter | |
DE3785811T2 (de) | Kurzschlitz-hybridkoppler grosser bandbreite. | |
DE3336405A1 (de) | Verfahren zum aufbau einer wanderwellenroehre mit gekoppelten hohlraeumen | |
EP1206812B1 (de) | Hohlleiterübergang | |
DE69618278T2 (de) | Dielektrisches Filter | |
DE69818326T2 (de) | Dielektrisches Filter, dielektrischer Duplexer und Verfahren zu deren Herstellung | |
DE2738644C2 (de) | Kopplungsvorrichtung für Höchstfrequenzröhren | |
DE19615854C1 (de) | Verfahren zur Herstellung einer Kupplung für das Verbinden zweier elektromagnetischer Hohlleiter | |
DE69523008T2 (de) | Dielektrischer Resonator im TM-Modus | |
DE2521956C3 (de) | Polarisationsweiche | |
DE2642448C3 (de) | Hochfrequenz-Wellentypwandler | |
EP1812986B1 (de) | Hochfrequenzfilter | |
DE3011301A1 (de) | Mikrowellenfilter | |
DE2502471A1 (de) | Hoechstfrequenz-bandsperre | |
EP0872910A2 (de) | Richtkoppler | |
EP0932217A1 (de) | E-Ebenen Hohlleiter-Zirkulator | |
DE19941881A1 (de) | Dielektrisches Filter, dielektrischer Duplexer und Sende-Empfangs-Vorrichtung | |
EP0328013B1 (de) | Elektrischer Hohlleiterschalter | |
DE69403530T2 (de) | H-förmige Hohlleiterstruktur mit einem Haupt- und zwei Nebenhohlleitern zum Leiten zweier Wellen mit unterschiedlicher Frequenz. | |
EP0309850A2 (de) | Anordnung zur Beseitigung störender elektromagnetischer Schwingungsformen in Hohlleiteranlagen | |
EP0280151B1 (de) | Mikrowellen-Polarisationsweiche | |
WO2023222592A1 (de) | Einrichtung zum kombinieren oder aufteilen von mikrowellen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2000953362 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 008141061 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2000953362 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10049175 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWG | Wipo information: grant in national office |
Ref document number: 2000953362 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |