EP1169747B1 - Hochfrequenzfilter - Google Patents
Hochfrequenzfilter Download PDFInfo
- Publication number
- EP1169747B1 EP1169747B1 EP00925207A EP00925207A EP1169747B1 EP 1169747 B1 EP1169747 B1 EP 1169747B1 EP 00925207 A EP00925207 A EP 00925207A EP 00925207 A EP00925207 A EP 00925207A EP 1169747 B1 EP1169747 B1 EP 1169747B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequency filter
- plunger
- tuning element
- filter according
- internal
- 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.)
- Expired - Lifetime
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/04—Coaxial resonators
Definitions
- the invention relates to a high-frequency filter in coaxial Construction according to the preamble of claim 1.
- a generic high-frequency filter can consist of one or several individual resonators in coaxial technology.
- Such coaxially constructed high-frequency filters are in usually in radio systems, for example in mobile radio range used. You can e.g. in Base stations are used for mobile communications, and for the selection of defined send and receive bands.
- a coaxial resonator is known from DE 21 36 728 A1, which is a cylindrical one closed with a bottom Housing and an inner conductor tube, which sits coaxial to the outer conductor.
- the cylindrically shaped Inner conductor tube takes a cylindrical inner conductor section on, which slides in the inner conductor tube. By Displacements of the end section of this inner conductor section compared to the inner conductor tube is a resonance vote made with respect to the respective frequency.
- the inner conductor is in the form of one at the end closed sleeve formed at the top open End of the outer conductor tube in the area of a to be attached Lid is held and anchored.
- GB 891 444 also shows such a resonator, in which case the inner conductor is not held and anchored in the region of a cover.
- EP 0 068 919 A1 also basically a high-frequency resonator is known, which is transverse to the longitudinal axis of the resonator has running adjustment device, from the outside through the wall of the resonator can be turned in and out radially to different degrees.
- this setting device has a cross pin extending to the axial direction of the resonator dielectric material so that by adjusting the Adjustment device and radial displacement of the mentioned Dielectric material a capacitance and Frequency change is feasible.
- the tuning device does not require one negligible space requirements.
- Another disadvantage is that a temperature change affects frequency behavior.
- the object of the present invention is, in contrast improved high-frequency filter in coaxial design to accomplish.
- the present invention provides simple means a significant improvement over conventional high-frequency filters or coaxial filters.
- the electrical tuning elements in the inner conductor preferably in the area of the bottom of the Coaxial filter element, at different heights are adjustably supported to the above To enable temperature compensation.
- a dielectric has proven to be particularly favorable To use material as little as possible has thermal expansion coefficient. Prefers a material is used which has a negative temperature coefficient which has dielectric constants.
- Figures 1 and 2 is in axial longitudinal section or in cross section a schematic representation of an individual resonator shown in coaxial technology, the following also briefly is referred to as a coaxial resonator or coaxial filter.
- This consists of an outer conductor 1, one shown in Embodiment arranged concentrically or coaxially thereto Inner conductor 3 and a bottom 5, over which the electrically conductive outer conductor 1 and the electrically conductive Inner conductor 3 electrically connected to each other stand.
- an adjustment element 7 is provided in the bottom area, which in the embodiment shown a threaded plate or pot 7 '.
- This threaded plate or threaded pot 7 ' has in its outer periphery External thread 9, which has a corresponding internal thread 11 is engaged, which at least in a sufficient axial length on the inside of the inner conductor 3 and / or on the inside of an axially recess 13 provided in bottom 5 is provided.
- the threaded plate or -pot 7 'a twisting or driving approach 15 in the shown Embodiment in the form of a slot, to use a screwdriver, for example Rotation of the adjusting element 7 and thus an axial To move the same with respect to the inner conductor.
- this setting element 7 is a pin-shaped Immersion or tuning element 17 arranged fixed, which in the exemplary embodiment shown is pin-shaped or cylindrical is designed.
- the length, the diameter, the dielectric constant and the attachment point of the dielectric tuning element or cylinder 17 are chosen so that the desired resonance frequency can be set in the desired frequency range can.
- the frequency is now set and tuned by Rotation of the adjusting element 7, whereby the adjusting element 7 with the dielectric tuning element 17 in Inside of the inner conductor 3 in different axial heights relative to the inner conductor 3 according to the double arrow display 21 can be set.
- the upper end of the inner conductor 3 based on the height of the Outer conductor 1 about 10 to 20% of the axial length of the outer conductor below the upper edge 23 of the outer conductor 1 and thus below the electrically conductive cover 25 comes to rest.
- the dielectric tuning element 17 stands, for example, slightly above the upper one Edge 27 of the inner conductor 3 over.
- the dielectric tuning element 17 touches the Inner conductor 3 itself not. If the attachment of the Tuning element only via the setting element 7 on the there provided thread engagement takes place in the shown Embodiment in the lower area of the inner conductor 3, preferably even only in the floor area or in the adjoining area of the inner conductor 3, will not become undefined, the capacity and thus that Frequency behavior adversely affecting undefined Contacts created at the points of contact.
- the structure shown has yet another essential Advantage because temperature compensation is possible is.
- a dielectric tuning element with a Expansion temperature coefficient chosen which is smaller than the temperature coefficient of the outer and / or inner conductor 1, 3 of the coaxial filter.
- This behavior can be done by choosing an appropriate one dielectric material for the tuning element 17 can be optimized.
- Dielectric are particularly suitable for this Materials made of ceramics. Are suitable materials that have a very low thermal Have expansion coefficients and a low Temperature coefficients of the relative dielectric constant.
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- Control Of Motors That Do Not Use Commutators (AREA)
- Surgical Instruments (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Non-Reversible Transmitting Devices (AREA)
- Filters And Equalizers (AREA)
Description
- Figur 1:
- einen schematischen axialen Querschnitt durch ein erfindungsgemäßes Hochfrequenzfilter in Form eines Einzelresonators; und
- Figur 2:
- einen schematischen Horizontalquerschnitt des Filters von Figur 1.
Claims (11)
- Hochfrequenzfilter in koaxialer Bauweise, bestehend aus einem oder mehreren Resonatoren, die folgende Merkmale aufweisen:mit einem elektrisch leitenden Außenleiter (1),mit einem elektrisch leitenden Innenleiter (3), der als Innenleiterrohr gestaltet ist,mit einem den Außen- und Innenleiter (1, 3) elektrisch verbindenden Boden (5),mit einem das Hochfrequenzfilter gegenüber vom Boden (5) abdeckenden Gehäusedeckel (25),mit einem Einstellelement (7), welches ein die Resonanzfrequenz veränderndes Eintauch- oder Abstimmelement (17) umfaßt, welches bezogen auf den Innenleiter (3) im Innenleiterrohr in unterschiedlicher Axial- oder Höhenlage in axialer Richtung eintauchend oder in diesem befindlich angeordnet ist,und das Eintauch- oder Abstimmelement (17) ist an einer Abstützstelle abgestützt, die zum Gehäusedeckel (25) versetzt liegt,das Eintauch- oder Abstimmelement (17) besteht aus dielektrischem Material.
- Hochfrequenzfilter nach Anspruch 1, dadurch gekennzeichnet, dass das Eintauch- oder Abstimmelement (17) an einer im Inneren des Innenleiters (3) und/oder im Bereich einer Ausnehmung (13) des Bodens (5) gehalten und abgestützt ist.
- Hochfrequenzfilter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Einstellelement (7) einen Gewindeteller oder -topf (7') aufweist, welcher mit einem Außengewinde (9) versehen ist, worüber das Einstellelement (7) mit einem Innengewinde (11) im Inneren des Innenleiters (3) und/oder der Ausnehmung (13) des Bodens (5) verbunden und gehalten ist.
- Hochfrequenzfilter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass auf dem Einstellelement (7) das elektrische Eintauch- oder Abstimmelement (17) angeordnet und mit dem Einstellelement (7) mit verstellbar befestigt ist.
- Hochfrequenzfilter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das dielektrische Eintauchoder Abstimmelement (17) zumindest in geringem Maße über den oberen Rand (27) des Innenleiters (3) übersteht oder unterhalb davon endet.
- Hochfrequenzfilter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der thermische Ausdehnungskoeffizient des dielektrischen Eintauch- oder Abstimmelementes (17) von dem thermischen Ausdehnungskoeffizienten des Innen- oder Außenleiters (3, 1) abweicht.
- Hochfrequenzfilter nach Anspruch 6, dadurch gekennzeichnet, dass der thermische Ausdehnungskoeffizient des dielektrischen Eintauch- oder Abstimmelementes (17) kleiner ist als der thermische Ausdehnungskoeffizient des Innen- oder Außenleiters (3,1).
- Hochfrequenzfilter nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Temperaturkoeffizient der Dielektrizitätskonstanten des Eintauch- oder Abstimmelementes (17) negativ ist.
- Hochfrequenzfilter nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das dielektrische Eintauchoder Abstimmelement (17) aus einem keramischen Material besteht.
- Hochfrequenzfilter nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das dielektrische Eintauchoder Abstimmelement (17) aus einer Aluminiumoxid-Keramik, insbesondere einer Al2O3-Keramik besteht.
- Hochfrequenzfilter nach einem der Anspprüche 2 bis 10, dadurch gekennzeichnet, dass der Gewindeteller oder -topf (7') aus Metall besteht.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19917087A DE19917087C2 (de) | 1999-04-15 | 1999-04-15 | Hochfrequenzfilter |
DE19917087 | 1999-04-15 | ||
PCT/EP2000/003302 WO2000064001A1 (de) | 1999-04-15 | 2000-04-13 | Hochfrequenzfilter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1169747A1 EP1169747A1 (de) | 2002-01-09 |
EP1169747B1 true EP1169747B1 (de) | 2002-06-26 |
Family
ID=7904702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00925207A Expired - Lifetime EP1169747B1 (de) | 1999-04-15 | 2000-04-13 | Hochfrequenzfilter |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP1169747B1 (de) |
JP (1) | JP2002542695A (de) |
KR (1) | KR20010112362A (de) |
CN (1) | CN1166027C (de) |
AT (1) | ATE219862T1 (de) |
AU (1) | AU769264B2 (de) |
BR (1) | BR0009723A (de) |
CA (1) | CA2370133A1 (de) |
DE (2) | DE19917087C2 (de) |
DK (1) | DK1169747T3 (de) |
HK (1) | HK1044633A1 (de) |
NZ (1) | NZ514485A (de) |
WO (1) | WO2000064001A1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6933804B2 (en) | 2003-05-08 | 2005-08-23 | Kathrein-Werke Kg | Radio frequency diplexer |
WO2006058965A1 (en) * | 2004-11-30 | 2006-06-08 | Filtronic Comtek Oy | Temperature-compensated resonator |
DE102006033704B3 (de) * | 2006-07-20 | 2008-01-03 | Kathrein-Werke Kg | Hochfrequenzfilter in koaxialer Bauweise, insbesondere nach Art einer Hochfrequenzweiche (z.B. einer Duplex-Weiche) oder eines Bandpassfilters oder Bandsperrfilters |
US7486162B2 (en) | 2004-03-04 | 2009-02-03 | Kathrein-Werke Kg | High frequency filter |
CN1585188B (zh) * | 2003-08-23 | 2010-10-06 | Kmw株式会社 | 可变射频频带滤波器 |
WO2012084154A1 (de) | 2010-12-23 | 2012-06-28 | Kathrein-Werke Kg | Abstimmbares hochfrequenzfilter |
DE102014001917A1 (de) | 2014-02-13 | 2015-08-13 | Kathrein-Werke Kg | Hochfrequenzfilter in koaxialer Bauweise |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI119207B (fi) * | 2003-03-18 | 2008-08-29 | Filtronic Comtek Oy | Koaksiaaliresonaattorisuodatin |
EP1760824B1 (de) * | 2005-09-06 | 2010-08-11 | Panasonic Corporation | Temperaturkompensation von Kammleitungsformresonatoren mit zusammentgesetztem Innenleiter |
GB2456738B (en) * | 2007-01-15 | 2011-08-10 | Isotek Electronics Ltd | TEM mode resonator |
KR101012776B1 (ko) * | 2010-08-26 | 2011-02-08 | 주식회사 이너트론 | 다단 공진기 및 그를 이용한 하우징 필터 |
DE102012020979A1 (de) * | 2012-10-25 | 2014-04-30 | Kathrein-Werke Kg | Abstimmbares Hochfrequenzfilter |
KR101730084B1 (ko) | 2015-04-20 | 2017-04-25 | 주식회사 케이엠더블유 | 캐비티 구조를 가진 무선 주파수 필터 |
KR101906464B1 (ko) * | 2017-01-11 | 2018-10-10 | (주)웨이브텍 | 마이크로웨이브 공진기 |
WO2019024082A1 (en) * | 2017-08-04 | 2019-02-07 | Nokia Solutions And Networks Oy | BANDPASS FILTERS AND ASSOCIATED METHODS |
KR101927956B1 (ko) | 2017-11-06 | 2018-12-12 | 주식회사 이엠따블유 | 가변 공진소자를 구비한 캐비티 필터 |
KR102285497B1 (ko) | 2020-05-14 | 2021-08-03 | 주식회사 엘트로닉스 | 동축 고주파 필터 및 이를 구비하는 통신 기기 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL137559C (de) * | 1959-06-30 | |||
US3443244A (en) * | 1967-08-23 | 1969-05-06 | Varian Associates | Coaxial resonator structure for solid-state negative resistance devices |
DE2136728A1 (de) * | 1971-07-22 | 1973-02-01 | Spinner Georg | Ankopplung eines koaxialen resonators |
FR2488056A1 (fr) * | 1980-07-29 | 1982-02-05 | Thomson Csf | Resonateur accordable et circuit hyperfrequence comportant au moins un tel resonateur |
FR2507018A1 (fr) * | 1981-06-02 | 1982-12-03 | Thomson Csf | Resonateur hyperfrequence du type condensateur variable a dielectrique |
-
1999
- 1999-04-15 DE DE19917087A patent/DE19917087C2/de not_active Expired - Fee Related
-
2000
- 2000-04-13 NZ NZ514485A patent/NZ514485A/en not_active IP Right Cessation
- 2000-04-13 EP EP00925207A patent/EP1169747B1/de not_active Expired - Lifetime
- 2000-04-13 DK DK00925207T patent/DK1169747T3/da active
- 2000-04-13 KR KR1020017012113A patent/KR20010112362A/ko not_active Application Discontinuation
- 2000-04-13 AU AU44004/00A patent/AU769264B2/en not_active Ceased
- 2000-04-13 AT AT00925207T patent/ATE219862T1/de not_active IP Right Cessation
- 2000-04-13 BR BR0009723-3A patent/BR0009723A/pt not_active IP Right Cessation
- 2000-04-13 CA CA002370133A patent/CA2370133A1/en not_active Abandoned
- 2000-04-13 JP JP2000613031A patent/JP2002542695A/ja active Pending
- 2000-04-13 WO PCT/EP2000/003302 patent/WO2000064001A1/de not_active Application Discontinuation
- 2000-04-13 DE DE50000248T patent/DE50000248D1/de not_active Expired - Lifetime
- 2000-04-13 CN CNB00806248XA patent/CN1166027C/zh not_active Expired - Lifetime
-
2002
- 2002-08-19 HK HK02106039A patent/HK1044633A1/xx unknown
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6933804B2 (en) | 2003-05-08 | 2005-08-23 | Kathrein-Werke Kg | Radio frequency diplexer |
CN1585188B (zh) * | 2003-08-23 | 2010-10-06 | Kmw株式会社 | 可变射频频带滤波器 |
US7486162B2 (en) | 2004-03-04 | 2009-02-03 | Kathrein-Werke Kg | High frequency filter |
WO2006058965A1 (en) * | 2004-11-30 | 2006-06-08 | Filtronic Comtek Oy | Temperature-compensated resonator |
DE102006033704B3 (de) * | 2006-07-20 | 2008-01-03 | Kathrein-Werke Kg | Hochfrequenzfilter in koaxialer Bauweise, insbesondere nach Art einer Hochfrequenzweiche (z.B. einer Duplex-Weiche) oder eines Bandpassfilters oder Bandsperrfilters |
WO2008009326A1 (de) | 2006-07-20 | 2008-01-24 | Kathrein-Werke Kg | Hochfrequenzfilter in koaxialer bauweise |
WO2012084154A1 (de) | 2010-12-23 | 2012-06-28 | Kathrein-Werke Kg | Abstimmbares hochfrequenzfilter |
DE102010056048A1 (de) | 2010-12-23 | 2012-06-28 | Kathrein-Werke Kg | Abstimmbares Hochfrequenzfilter |
DE102014001917A1 (de) | 2014-02-13 | 2015-08-13 | Kathrein-Werke Kg | Hochfrequenzfilter in koaxialer Bauweise |
Also Published As
Publication number | Publication date |
---|---|
KR20010112362A (ko) | 2001-12-20 |
AU769264B2 (en) | 2004-01-22 |
AU4400400A (en) | 2000-11-02 |
JP2002542695A (ja) | 2002-12-10 |
DE19917087A1 (de) | 2000-11-02 |
HK1044633A1 (en) | 2002-10-25 |
DE19917087C2 (de) | 2001-07-26 |
EP1169747A1 (de) | 2002-01-09 |
ATE219862T1 (de) | 2002-07-15 |
CN1347578A (zh) | 2002-05-01 |
CN1166027C (zh) | 2004-09-08 |
DE50000248D1 (de) | 2002-08-01 |
DK1169747T3 (da) | 2002-10-14 |
WO2000064001A1 (de) | 2000-10-26 |
CA2370133A1 (en) | 2000-10-26 |
NZ514485A (en) | 2003-09-26 |
BR0009723A (pt) | 2002-01-02 |
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