EP0978894B1 - Dérivateur de surtension coaxial à large bande - Google Patents
Dérivateur de surtension coaxial à large bande Download PDFInfo
- Publication number
- EP0978894B1 EP0978894B1 EP99115530A EP99115530A EP0978894B1 EP 0978894 B1 EP0978894 B1 EP 0978894B1 EP 99115530 A EP99115530 A EP 99115530A EP 99115530 A EP99115530 A EP 99115530A EP 0978894 B1 EP0978894 B1 EP 0978894B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- surge
- surge arrester
- coaxial
- length
- 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
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/202—Coaxial filters
Definitions
- the invention relates to a broadband coaxial surge arrester, with one to a coaxial line section short-circuit line connected in parallel and one in Series switched idle line.
- Coaxial surge arresters which consist of a coaxial line section with a short-circuit line connected in parallel, generally a ⁇ / 4 short-circuit line, are known. They are very narrow-band. Even if a VSWR of 1.1 is permitted, only a relative bandwidth of 20% can be achieved. A larger bandwidth can be achieved if the characteristic impedance Z K of the short-circuit line is made larger than the characteristic impedance Z O of the coaxial line section. However, Z K cannot be made arbitrarily large, since the remaining residual interference voltage is proportional to Z K.
- the invention has for its object a broadband to create coaxial surge arrester connected to the Edges of a given frequency range has a low reflection factor.
- connection point of the short-circuit line and the connection point is a transforming one coaxial line section with a length ⁇ / 4.
- ⁇ is the center frequency of the specified frequency range corresponding wavelength. It was determined and can also be shown arithmetically that with the Proposed surge arrester the frequency dependent Course of the reflection factor two very small minima sufficient Bandwidth on both sides of one in the not maximum used band. The minima can be more than one octave apart. Your location and their size depend on the dimensioning of the transforming involved Line elements, i.e. the short-circuit line, of the transforming line section and the idling line section Line, from.
- the length of the serial transforming Line piece is chosen so that the frequency dependent Curve reflecting the course of the reflection factor two different operating frequencies of the surge arrester each has a minimum (claim 2).
- the wave resistance of the short-circuit line is expedient high impedance and the characteristic impedance of the idling Cable with lower resistance than the characteristic impedance of the Dimensioned coaxial line section (claim 3).
- the surge arrester on the given proposal also has the advantage of being smaller than a surge arrester according to the state of the art, because both the Length of the short-circuit line as well as the length of the open circuit Line can be chosen to be about 20 to 30% smaller than ⁇ / 4 be (claims 5 and 6).
- the length of the serial transforming coaxial line piece about 20 to 50% of ⁇ / 4 (claim 7).
- the idle Line from a section of reduced diameter the inner conductor of the transforming coaxial line section, a sleeve surrounding this section from a dielectric material, the length of the length of the idle Line corresponds and from a coaxial sleeve enclosing tubular portion of the coaxial line continuing inner conductor in cooperation with the continuous Outer conductor of the surge arrester (claim 8).
- the surge arrester shown in Fig. 1 is here formed as a coaxial assembly on their two Ends with plug connections basically any and here is of a type of no particular interest.
- the surge arrester is reciprocal and includes a coaxial Line section 1, a short-circuit line connected in parallel 2, a short, transforming coaxial Line piece 3 and an idling one connected in series Line 4.
- the outer conductor 25 of the short-circuit line 2 can be part of the other line sections common Outer conductor 5 are considered.
- With the inner conductor 11 of the coaxial line section 1 is, as usual, the inner conductor 21 of the short-circuit line 2 connected, etc. here after the Male / female principle. At its other end is the inner conductor 21 electrically connected to the outer conductor 25.
- the length of the short-circuit line is less than ⁇ / 4, where ⁇ is the arithmetic, but not used, band center frequency corresponding wavelength is.
- the diameter of the inner conductor 21 and the inner diameter of the outer conductor 25 of the short-circuit line are according to the known relationship chosen so that the characteristic impedance of the short-circuit line about two to three times the wave resistance the coaxial line.
- the transforming line section 3 follows in Series the idle line 4. This can be about have the same length as the short-circuit line 2 and includes an inner conductor 41 which continues the inner conductor 31, whose diameter is considerably smaller than that of the Inner conductor 31 is.
- the idle line also includes a sleeve 42 surrounding this inner conductor 41 from a dielectric material.
- the sleeve 42 has a circumferential Flange 42a, the tubular surrounding the sleeve Section 45 of the inner conductor continuing the coaxial line from the inner conductor 41 of the transforming line section 3 electrically separates. That is why the tubular Section 45 the outer conductor of the idle line 4.
- According to the given diameter ratios and the dielectric constant of the sleeve 42 has a characteristic impedance, which is about half to a quarter of the wave resistance of the coaxial line section 1.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Details Of Aerials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Claims (8)
- Dérivateur de surtension coaxial à large bande avec un guide de court circuit (2) monté en parallèle sur une section de guide coaxial (1) et un guide en circuit ouvert (4) monté en série, caractérisé en ce qu'une partie de guide coaxial transformant (3) de longueur < λ/4 se trouve entre le point de raccordement du guide de court circuit (2) et le début du guide en circuit ouvert (4).
- Dérivateur de surtension selon la revendication 1, caractérisé en ce que la longueur de la partie de guide transformant (3) est choisie de telle façon que la courbe représentant l'allure du coefficient de réflexion en fonction de la fréquence présente respectivement un minimum à deux fréquences de fonctionnement différentes du dérivateur de surtension.
- Dérivateur de surtension selon la revendication 1 ou la revendication 2, caractérisé en ce que l'impédance caractéristique du guide de court circuit (2) est fixée à une valeur ohmique supérieure et l'impédance caractéristique du guide en circuit ouvert (4) à une valeur ohmique inférieure à l'impédance caractéristique de la section de guide coaxial (1).
- Dérivateur de surtension selon l'une des revendications 1 à 3, caractérisé en ce que l'impédance caractéristique du guide de court circuit (2) est égale à deux à trois fois l'impédance caractéristique de la section de guide coaxial (1) et en ce que l'impédance caractéristique du guide en circuit ouvert (4) est approximativement égale à une valeur comprise entre la moitié et un quart de l'impédance caractéristique de la section de guide coaxial (1).
- Dérivateur de surtension selon l'une des revendications 1 à 4, caractérisé en ce que la longueur du guide de circuit court (2) est 20 à 30% plus petite que λ/4.
- Dérivateur de surtension selon l'une des revendications 1 à 5, caractérisé en ce que la longueur du guide de circuit court (4) est 20 à 30% plus petite que λ/4.
- Dérivateur de surtension selon l'une des revendications 1 à 6, caractérisé en ce que la longueur de la partie de guide coaxial transformant (3) est approximativement égale à 20 à 50 % de λ/4.
- Dérivateur de surtension selon l'une des revendications 1 à 7, caractérisé en ce que le guide en circuit ouvert (4) se compose d'une section (41) de diamètre réduit du conducteur interne (31) de la partie de guide coaxial transformant (3), d'un manchon (42) fait d'un matériau diélectrique qui entoure cette section et dont la longueur correspond à la longueur du guide en circuit ouvert (4), et d'une section tubulaire (45) du conducteur interne de raccordement qui entoure coaxialement le manchon (42), en coopération avec le conducteur externe traversant (5) du dérivateur de surtension.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19835531 | 1998-08-06 | ||
DE19835531 | 1998-08-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0978894A2 EP0978894A2 (fr) | 2000-02-09 |
EP0978894A3 EP0978894A3 (fr) | 2001-07-25 |
EP0978894B1 true EP0978894B1 (fr) | 2004-11-17 |
Family
ID=7876650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99115530A Expired - Lifetime EP0978894B1 (fr) | 1998-08-06 | 1999-08-05 | Dérivateur de surtension coaxial à large bande |
Country Status (6)
Country | Link |
---|---|
US (1) | US6266224B1 (fr) |
EP (1) | EP0978894B1 (fr) |
AT (1) | ATE282898T1 (fr) |
DE (1) | DE59911074D1 (fr) |
ES (1) | ES2232053T3 (fr) |
HK (1) | HK1025677A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009007622A1 (de) | 2009-02-05 | 2010-10-07 | Spinner Gmbh | Koaxialer Überspannungsableiter |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19936869C1 (de) | 1999-08-05 | 2001-03-08 | Spinner Gmbh Elektrotech | Koaxialer Überspannungsableiter |
DE10133359A1 (de) * | 2001-07-10 | 2003-01-23 | Rohde & Schwarz | Breitbandige Blitzschutzvorrichtung |
JP3619796B2 (ja) * | 2001-09-06 | 2005-02-16 | 株式会社エヌ・ティ・ティ・ドコモ九州 | 通信線路サージ保護システム |
US6926555B2 (en) * | 2003-10-09 | 2005-08-09 | Radio Frequency Systems, Inc. | Tuned radio frequency coaxial connector |
EP1691379B1 (fr) * | 2005-02-15 | 2009-12-30 | Spinner GmbH | Dérivateur de surtension coaxial |
DE502007004759D1 (de) * | 2006-07-27 | 2010-09-30 | Huber+Suhner Ag | Überspannungsschutz für eine Koaxialleitung |
US8134818B2 (en) * | 2008-04-08 | 2012-03-13 | John Mezzalingua Associates, Inc. | Quarter wave stub surge suppressor with coupled pins |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58225586A (ja) * | 1982-06-23 | 1983-12-27 | ヒロセ電機株式会社 | 同軸型避雷構造 |
JPS58225585A (ja) * | 1982-06-23 | 1983-12-27 | ヒロセ電機株式会社 | 同軸型避雷構造 |
CH660261A5 (en) * | 1982-12-30 | 1987-03-31 | Huber+Suhner Ag | EMP suppressor in a coaxial conductor |
CH676900A5 (en) * | 1989-08-29 | 1991-03-15 | Huber+Suhner Ag | Filter for coaxial cable coupling - uses coaxial ceramics resonator for providing frequency selective filter |
CH690146A5 (de) * | 1995-03-31 | 2000-05-15 | Huber+Suhner Ag | EMP-Filter in einer Koaxialleitung. |
US5978199A (en) * | 1997-01-27 | 1999-11-02 | Huber & Suhner Ag | EMP-charge-eliminator |
US5953195A (en) * | 1997-02-26 | 1999-09-14 | Reltec Corporation | Coaxial protector |
US5844766A (en) * | 1997-09-09 | 1998-12-01 | Forem S.R.L. | Lightning supression system for tower mounted antenna systems |
-
1999
- 1999-08-05 AT AT99115530T patent/ATE282898T1/de not_active IP Right Cessation
- 1999-08-05 EP EP99115530A patent/EP0978894B1/fr not_active Expired - Lifetime
- 1999-08-05 US US09/368,876 patent/US6266224B1/en not_active Expired - Lifetime
- 1999-08-05 ES ES99115530T patent/ES2232053T3/es not_active Expired - Lifetime
- 1999-08-05 DE DE59911074T patent/DE59911074D1/de not_active Expired - Lifetime
-
2000
- 2000-08-02 HK HK00104848A patent/HK1025677A1/xx not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009007622A1 (de) | 2009-02-05 | 2010-10-07 | Spinner Gmbh | Koaxialer Überspannungsableiter |
DE102009007622B4 (de) * | 2009-02-05 | 2011-04-21 | Spinner Gmbh | Koaxialer Überspannungsableiter |
Also Published As
Publication number | Publication date |
---|---|
DE59911074D1 (de) | 2004-12-23 |
EP0978894A3 (fr) | 2001-07-25 |
HK1025677A1 (en) | 2000-11-17 |
ATE282898T1 (de) | 2004-12-15 |
US6266224B1 (en) | 2001-07-24 |
ES2232053T3 (es) | 2005-05-16 |
EP0978894A2 (fr) | 2000-02-09 |
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