WO1997042679A1 - Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren - Google Patents
Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren Download PDFInfo
- Publication number
- WO1997042679A1 WO1997042679A1 PCT/DE1997/000857 DE9700857W WO9742679A1 WO 1997042679 A1 WO1997042679 A1 WO 1997042679A1 DE 9700857 W DE9700857 W DE 9700857W WO 9742679 A1 WO9742679 A1 WO 9742679A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mode
- dual
- dielectric
- filter according
- pole
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
- H01P7/105—Multimode resonators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/70—High TC, above 30 k, superconducting device, article, or structured stock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/825—Apparatus per se, device per se, or process of making or operating same
- Y10S505/866—Wave transmission line, network, waveguide, or microwave storage device
Definitions
- the present invention relates to a dual-mode two-pole filter, such as. B. a bandpass filter for the microwave range, consisting of a resonator for two dipole modes, each with a dielectric, which is arranged on at least one high-temperature superconductor film, with a shielding housing, which is arranged over the high-temperature superconductor film and the dielectric encloses, and with a coupling device for coupling the dipole modes and in particular for coupling microwaves to the electromagnetic fields of the dipole modes used. It also relates to a multi-pole dual-mode filter.
- bandpass filters in the microwave range (4-20GHz) play an important role in the preselection of individual communication channels.
- Analog multiplexers with filters based on cavity resonators are usually used there, in which the quality factors of the individual resonators are in the range of a few 10 4 .
- the mostly circular cylindrical cavity resonators are operated in most cases in so-called “dual modes", ie orthogonal dipole modes with a preferred direction of the electromagnetic fields in the circular area. This means that two poles of a filter can be realized with one resonator, ie an n-pole filter based on "dual-mode" resonators consists of n / 2 resonators.
- REPLACEMENT BLA ⁇ (RULE 26) the high frequency power of the output stages, which is normally generated by tube amplifiers (traveling-wave tube amplifiers), can be reduced.
- Insertion loss decreases with increasing quality factor of the individual resonators.
- a strongly miniaturized "dual-mode M filter based on dielectric resonators is known from US Pat. No. 4,489,293.
- the HE 1 L1 mode of a cylindrical dielectric is used, which splits into two orthogonal dipole modes.
- tan ⁇ is the loss tangent of the material from which the dielectric resonator is made.
- the limitation is caused by losses in the various parts i of the wall of the metallic shielding housing, which are each characterized by the surface resistance of the wall material R s ⁇ and by a geometry factor G ⁇ . The latter results from the distribution of the electromagnetic fields for the respective vibration mode of the resonator.
- WO 93/09575 discloses circular cylindrical dielectric resonators with two end plates made of high-temperature superconductor films. With these, grades in the range of 10 6 were demonstrated, since in the TE 011 vibration mode used there the geometry factor is sufficiently large for the normal conductive outer surface of the cylinder. However, due to the rotational symmetry of the field distribution, this mode is not a dipole mode, so that "dual-mode" operation is not possible here.
- the object of the invention is therefore to create a dual-mode filter in which the quality factors for the individual resonators are 10 5 to 10 6 .
- the object is achieved according to the invention for a two-pole filter in that the dielectric is hemispherical.
- the implementation of more than two-pole filters is solved according to claim 13.
- the curved surfaces of the shielding housing have geometric factors that are large enough to accommodate one or two high-temperature superconductor films (HTS films) to achieve the qualities required in the task.
- HTS films high-temperature superconductor films
- Subclaims 2-5 contain advantageous features for coupling to the electromagnetic fields of the dipole modes to adjust the resonance frequency of the dipole modes and to set the coupling between the dipole modes.
- Fig. La is a schematic side view of a dual-mode two-pole filter according to the present invention.
- Fig. Lb is a schematic plan view of the dual-mode ⁇ two-pole filter from Fig. La;
- FIG. 2 shows a schematic top view of a dual-mode four-pole filter according to the present invention
- 3a shows a schematic side view of a calculated example of a distribution of the electric field in a resonator according to the present invention
- FIG. 3b shows a schematic top view of the example from FIG. 3a;
- 4a is a schematic side view of a calculated example of a distribution of the magnetic field in a resonator according to the present
- FIG. 4b shows a schematic top view of the example from FIG. 4a.
- a dual-mode two-pole filter 1 according to the invention is shown schematically in a side view in FIG.
- a dielectric 3 (for example made of LaA10 3 ) designed as a dielectric hemisphere is arranged on a high-temperature superconductor film 5 (hereinafter referred to as HTS film).
- HTS film high-temperature superconductor film 5
- the invention is not limited to the arrangement of a single HTS film; rather, in another embodiment, another HTS film 5 can also be provided as the upper end plate of a cylindrical shielding housing 7.
- the metallic shield housing 7 can be rectangular, cylindrical or hemispherical and consists, for. B. preferably made of a highly conductive metal such as copper.
- the coupling to the two dipole modes of the "dual mode" is carried out by a coupling device, the coupling elements 9 of which are either linear coaxial antennas (FIGS. 1 a and 1 b) for coupling to the electric field or coaxial loops (not shown) for coupling to the magnetic field .
- the coupling elements 9 are passed through holes 11 in the superconducting films 5.
- the coupling between the dipole modes is set via a further adjustable dielectric rod 15 (FIG. 1b), which is preferably arranged at an angle of 45 ° with respect to the orientation of the dipole modes.
- 2 shows a four-pole filter consisting of two “dual-mode” resonators 1, 1.
- the coupling between the two resonators 1, 1 is defined by the distance between the two hemispheres and can optionally be adjusted by means of a further adjustable dielectric rod between the hemispheres become.
- several hemispheres can be arranged next to one another in the manner shown in FIG. The hemispheres do not necessarily have to be arranged in a row.
- the metallic shielding housing 7 should have at least a distance from the hemisphere surface corresponding to the diameter of the hemisphere at all points so that the losses in the shielding housing do not become too high.
- the loss contribution of the curved surface of the metallic shielding housing is very small. This is because, in contrast to the arrangement described in the prior art, the electric fields in the Hemisphere run mainly parallel to the surface of the sphere (Fig. 3a).
- calculation example s is the half-sphere diameter 9.6mm, the dielectric constant of the material hemisphere 23.4 (LaAlO ß). Diameter / height of the circular cylindrical shielding housing are 26 / 14mm.
- the calculation results in a resonance frequency of 6.58GHz, the mode is the fundamental mode (lowest resonance frequency) o of the resonator.
- the calculated geometry factors are 114 ⁇ for the lower end face (superconducting film), 16300 ⁇ for the upper end face and 10400 ⁇ for the outer surface.
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9539421A JP2000509584A (ja) | 1996-05-03 | 1997-04-26 | 高q共振器からなる”デュアルモード”マイクロ波帯域フィルタ |
DE59701819T DE59701819D1 (de) | 1996-05-03 | 1997-04-26 | Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren |
US09/180,160 US6484043B1 (en) | 1996-05-03 | 1997-04-26 | Dual mode microwave band pass filter made of high quality resonators |
EP97922878A EP0896744B1 (de) | 1996-05-03 | 1997-04-26 | Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19617698.0 | 1996-05-03 | ||
DE19617698A DE19617698C1 (de) | 1996-05-03 | 1996-05-03 | Dual-mode-Zweipolfilter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997042679A1 true WO1997042679A1 (de) | 1997-11-13 |
Family
ID=7793177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/000857 WO1997042679A1 (de) | 1996-05-03 | 1997-04-26 | Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren |
Country Status (7)
Country | Link |
---|---|
US (1) | US6484043B1 (de) |
EP (1) | EP0896744B1 (de) |
JP (1) | JP2000509584A (de) |
CA (1) | CA2252659A1 (de) |
DE (2) | DE19617698C1 (de) |
ES (1) | ES2148978T3 (de) |
WO (1) | WO1997042679A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19824997C2 (de) * | 1998-06-05 | 2003-01-09 | Forschungszentrum Juelich Gmbh | Mehrpol-Bandpaßfilter mit elliptischer Filtercharakteristik |
DE19927798A1 (de) * | 1999-06-18 | 2001-01-04 | Forschungszentrum Juelich Gmbh | Dieelektrische Resonatorkonfiguration für Mikrowellen-Mehrpol-Bandpaßfilter |
DE10034338C2 (de) * | 2000-07-14 | 2002-06-20 | Forschungszentrum Juelich Gmbh | Mehrpoliges kaskadierendes Quardrupel-Bandpaßfilter auf der Basis dielektrischer Dual-Mode-Resonatoren |
US7068127B2 (en) * | 2001-11-14 | 2006-06-27 | Radio Frequency Systems | Tunable triple-mode mono-block filter assembly |
US7042314B2 (en) * | 2001-11-14 | 2006-05-09 | Radio Frequency Systems | Dielectric mono-block triple-mode microwave delay filter |
DE10353104A1 (de) * | 2003-11-12 | 2005-06-09 | Tesat-Spacecom Gmbh & Co.Kg | Anordnung zur Justage der Kopplung bei dielektrischen Filtern |
US6954122B2 (en) * | 2003-12-16 | 2005-10-11 | Radio Frequency Systems, Inc. | Hybrid triple-mode ceramic/metallic coaxial filter assembly |
DE102007027372A1 (de) * | 2007-06-11 | 2008-12-18 | Cognis Oleochemicals Gmbh | Verfahren zur Hydrierung von Glycerin |
DE102007027371A1 (de) * | 2007-06-11 | 2008-12-18 | Cognis Oleochemicals Gmbh | Verfahren zur Herstellung einer Verbindung aufweisend mindestens eine Ester-Gruppe |
US8111115B2 (en) * | 2008-07-21 | 2012-02-07 | Com Dev International Ltd. | Method of operation and construction of dual-mode filters, dual band filters, and diplexer/multiplexer devices using half cut dielectric resonators |
US8954125B2 (en) | 2011-07-28 | 2015-02-10 | International Business Machines Corporation | Low-loss superconducting devices |
US9138317B2 (en) | 2013-03-14 | 2015-09-22 | Osteoceramics, Inc | Conduits for enhancing tissue regeneration |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706965A1 (de) * | 1986-03-04 | 1987-09-10 | Murata Manufacturing Co | Doppel-modenfilter |
EP0387705A2 (de) * | 1989-03-14 | 1990-09-19 | Fujitsu Limited | Schaltung mit dielektrischem Resonator im TE01-Mode |
EP0496512A1 (de) * | 1991-01-24 | 1992-07-29 | Space Systems / Loral, Inc. | Hybridischer dielektrischer Resonator/Hochtemperatur-Supraleitender Filter |
EP0656670A2 (de) * | 1993-12-03 | 1995-06-07 | Com Dev Ltd. | Miniaturisierte supraleitende dielektrische Resonatorfilter und Verfahren zu ihrem Betrieb |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4489293A (en) * | 1981-05-11 | 1984-12-18 | Ford Aerospace & Communications Corporation | Miniature dual-mode, dielectric-loaded cavity filter |
US5324713A (en) * | 1991-11-05 | 1994-06-28 | E. I. Du Pont De Nemours And Company | High temperature superconductor support structures for dielectric resonator |
-
1996
- 1996-05-03 DE DE19617698A patent/DE19617698C1/de not_active Expired - Fee Related
-
1997
- 1997-04-26 CA CA002252659A patent/CA2252659A1/en not_active Abandoned
- 1997-04-26 EP EP97922878A patent/EP0896744B1/de not_active Expired - Lifetime
- 1997-04-26 US US09/180,160 patent/US6484043B1/en not_active Expired - Fee Related
- 1997-04-26 JP JP9539421A patent/JP2000509584A/ja active Pending
- 1997-04-26 WO PCT/DE1997/000857 patent/WO1997042679A1/de active IP Right Grant
- 1997-04-26 ES ES97922878T patent/ES2148978T3/es not_active Expired - Lifetime
- 1997-04-26 DE DE59701819T patent/DE59701819D1/de not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706965A1 (de) * | 1986-03-04 | 1987-09-10 | Murata Manufacturing Co | Doppel-modenfilter |
EP0387705A2 (de) * | 1989-03-14 | 1990-09-19 | Fujitsu Limited | Schaltung mit dielektrischem Resonator im TE01-Mode |
EP0496512A1 (de) * | 1991-01-24 | 1992-07-29 | Space Systems / Loral, Inc. | Hybridischer dielektrischer Resonator/Hochtemperatur-Supraleitender Filter |
EP0656670A2 (de) * | 1993-12-03 | 1995-06-07 | Com Dev Ltd. | Miniaturisierte supraleitende dielektrische Resonatorfilter und Verfahren zu ihrem Betrieb |
Non-Patent Citations (2)
Title |
---|
N. IMAI ET AL.: "A DESIGN OF HIGH-Q DIELECTRIC RESONATORS FOR MIC APPLICATIONS", ELECTRONICS AND COMMUNICATIONS IN JAPAN., vol. 67B, no. 12, December 1984 (1984-12-01), NEW YORK US, pages 59 - 67, XP002040566 * |
TELLMANN N ET AL: "HIGH-Q LAALO3 DIELECTRIC RESONATOR SHIELDED BY YBCO-FILMS", IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 4, no. 3, 1 September 1994 (1994-09-01), pages 143 - 148, XP000444735 * |
Also Published As
Publication number | Publication date |
---|---|
ES2148978T3 (es) | 2000-10-16 |
CA2252659A1 (en) | 1997-11-13 |
DE19617698C1 (de) | 1997-10-16 |
US6484043B1 (en) | 2002-11-19 |
DE59701819D1 (de) | 2000-07-06 |
EP0896744B1 (de) | 2000-05-31 |
JP2000509584A (ja) | 2000-07-25 |
EP0896744A1 (de) | 1999-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102004007340B4 (de) | Driftarmes supraleitendes Hochfeldmagnetsystem und hochauflösendes magnetisches Resonanzspektrometer | |
AT393762B (de) | Als wendelantenne ausgebildete uhf-sendeund/oder empfangsantenne | |
DE4232884C2 (de) | Antennenanordnung für ein Kernspinresonanzgerät | |
EP0896744B1 (de) | Dual-mode-mikrowellen-bandpassfilter aus hochgüteresonatoren | |
EP0908738B1 (de) | NMR-Probenkopf mit integrierter Fernabstimmung | |
DE2819883A1 (de) | Beschleunigeranordnung fuer schwere ionen | |
DE3538952A1 (de) | Hochfrequenz-spulenanordnung fuer kernspinresonanzgeraet | |
DE4434949C2 (de) | Mammographie-Antennenanordnung für Magnetresonanzuntersuchungen einer weiblichen Brust | |
DE7719437U1 (de) | Funk- und rundfunk-antenne | |
WO2005060322A2 (de) | Undulator und verfahren zu dessen betrieb | |
DE3619970A1 (de) | Oberflaechenspule fuer hochfrequenzmagnetfelder bei kernspinuntersuchungen | |
EP0485395B1 (de) | Supraleitende homogene hochfeldmagnetspule | |
DE69131708T2 (de) | Kernspinresonanzapparat mit einem supraleitenden Abschirmmagneten | |
EP1410698B1 (de) | Hochfrequenz-anpanetzwerk | |
EP0432241B1 (de) | Probenkopf für die kernresonanz-ganzkörper-tomographie oder die ortsabhängige in-vivo kernresonanz-spektroskopie | |
DE10065510C2 (de) | Resonator, Filter und Duplexer | |
DE4218635C2 (de) | Hochfrequenz-Empfangsantenne einer Einrichtung zur Kernspintomographie mit mindestens einem Kondensator | |
DE4018657A1 (de) | Probenkopf fuer kernresonanz-spektrometer | |
DE10225531B4 (de) | Supraleitende Hochfeld-Magnetspule mit supraleitenden Übergangsstellen | |
DE4445700A1 (de) | Gradiometer | |
WO1997036186A2 (de) | ANORDNUNG ZUR ANKOPPLUNG EINES rf-SQUID-MAGNETOMETERS AN EINEN SUPRALEITENDEN TANKSCHWINGKREIS | |
DE4333182A1 (de) | Doppeltresonante Antennenanordnung für ein Magnetresonanzgerät | |
EP1331489A2 (de) | Magnetische Homogenisierung von Supraleitenden HF-Spulen für den Empfang von NMR-Signalen | |
DE102009010211A1 (de) | Diathermievorrichtung | |
DE29620718U1 (de) | Anordnung zur Ankopplung eines rf-SQUID-Magnetometers an einen supraleitenden Tankschwingkreis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1997922878 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2252659 Country of ref document: CA Ref country code: CA Ref document number: 2252659 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09180160 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1997922878 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1997922878 Country of ref document: EP |