EP0962031B1 - Anordnung zur entzerrung eines frequenzsignals, insbesondere für eine satellitenkommunikationsanlage - Google Patents
Anordnung zur entzerrung eines frequenzsignals, insbesondere für eine satellitenkommunikationsanlage Download PDFInfo
- Publication number
- EP0962031B1 EP0962031B1 EP97949874A EP97949874A EP0962031B1 EP 0962031 B1 EP0962031 B1 EP 0962031B1 EP 97949874 A EP97949874 A EP 97949874A EP 97949874 A EP97949874 A EP 97949874A EP 0962031 B1 EP0962031 B1 EP 0962031B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- frequency
- circulator
- equalizer
- reflection
- 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
- 238000004891 communication Methods 0.000 title claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P9/00—Delay lines of the waveguide type
- H01P9/003—Delay equalizers
Definitions
- the invention relates to an arrangement for equalization a frequency signal, in particular for a satellite communication system, with a channel filter and an equalizer downstream of the channel filter.
- the disadvantage here is that there are so-called runtime differences between the low, middle and high-frequency signal components within a narrowband Frequency band is coming. These runtime differences lead in the subsequent composition and amplification of the signals to signal distortions.
- the equalizer consists of an at least partially superconducting reflection equalizer, which is preferable a planar circulator and a superconducting one Reflection filter can, due to the used Components in superconducting planar technology minimum installation space equalization of the signals and there is a reduction in the group duration.
- the reflection filter will be the low frequency and higher-frequency signal components of the transmission Signals of a certain frequency band superimposed in such a way that their term is the term of the medium frequency Signal components is approximated so that the Variation in group duration drastically reduced is.
- FIG. 1 shows an arrangement 10 for equalizing a Frequency signal shown schematically.
- the order 10 has a channel filter 12 at its input terminal 14 a frequency signal is present.
- On one Output terminal 16 of the channel filter 12 is an equalizer 18 connected.
- the equalizer 18 has one Circulator 20 and a reflection filter 22.
- the Circulator 20 is connected to a first connection 24 connected to the output terminal 16 of the channel filter 12.
- a second port 26 of the circulator 20 is connected to the reflection filter 22 and at one Output terminal 28 is the equalized frequency signal on.
- the channel filter 12 is for example an 8-circuit filter.
- the reflection filter 22 is, for example, a microstrip or Coplanar filter while the circulator 20 is a Y microstrip circulator is.
- the reflection filter 22 has a coupling line 30 on that with the terminal 26 of the circulator 20th connected is. Furthermore, at least one pair is with each other coupled planar resonators 32 are provided.
- the coupling line 30 is to the circulator 20, in particular its connection 26, adapted to the resistance. This adjusts the opening width of the connection 26 to the opening width of the coupling line 30, so that with regard to reflection behavior an optimal connection transition is achieved becomes. This avoids reflection losses.
- the arrangement 10 shown in FIG. 1 shows the following Function:
- a frequency signal present at input terminal 14 is band limited by the channel filter 12 means that only a narrow frequency band is filtered out.
- the input signal is, for example in the gigahertz range (microwave), for example from 3.4 to 4.2 GHz.
- This input signal becomes through the channel filter 12 the narrow frequency band filtered out.
- the filtering takes place according to the Design of the channel filter 12.
- This narrow frequency band the output terminal 28 of the arrangement 10 subsequent amplifiers can be supplied.
- the individual frequencies of the filtered narrow Frequency bands have due to their different Frequency a different term, so that their reinforcement and subsequent reassembly to the amplified output signal Signal corruption would result. That's how they are low and high frequency signal components of the at the output connection 16 applied frequency signal is known slower than the medium frequency Signal components. Overall, there is a difference in group transit times from about 20 to 40 ns.
- the group runtime is an example Frequency components of the input terminal 14 Frequency signal plotted against the frequency.
- the upper solid line shows the group duration in the channel filter 12. It becomes clear that between the low frequency range at 3.885 GHz and the higher frequency range at 3.920 GHz as well the middle frequency range at about 3,900 to 3.905 GHz, a runtime difference of approximately 15 ns (from about 28 to about 42 ns).
- the individual signal components are in the circulator 20 fed.
- the signals are from the Planar resonators 32 reflect and over the coupling line 30 and the terminal 26 in turn Resonator of the circulator 20 supplied. From there a reflection at the output terminal 28 of the Circulator 20
- the Equalizer 18 which consists of the circulator 20 and the Reflection filter 22, is designed such that the term of the low-frequency and higher-frequency Frequency signals are less than the transit time of the medium-frequency signal components.
- the runtime of the equalizer shows 18 an increasing parabola in the areas on, in which the transit times in the channel filter 12 a descending parabola.
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Radio Relay Systems (AREA)
- Waveguide Connection Structure (AREA)
Description
- Figur 1
- eine schematische Ansicht einer Anordnung zur Entzerrung eines Frequenzsignals;
- Figur 2
- die Darstellung der Gruppenlaufzeit der einzelnen Bestandteile der Anordnung gemäß Figur 1 und
- Figur 3
- die Darstellung einer Gruppenlaufzeit der gesamten Anordnung gemäß Figur 1.
Claims (6)
- Anordnung zur Entzerrung eines Frequenzsignals, insbesondere für eine Satellitenkommunikationsanlage, mit einem Kanalfilter (12) und einem dem Kanalfilter nachgeschalteten Entzerrer (18), wobei der Entzerrer ein zumindest teilweise supraleitender Reflexions-Entzerrer ist, dadurch gekennzeichnet, daß das Kanalfilter (12) und der Entzerrer (18) planar sind und daß der Reflexions-Entzerrer ein als Mikrostreifenfilter oder als Koplanarfilter ausgebildetes supraleitendes Reflexionsfilter (22) aufweist.
- Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Entzerrer (18) einen Planarzirkulator (20) aufweist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Planarzirkulator (20) ein Mikrostreifenzirkulator ist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einkopplung des Reflexionsfilters (22) am Zirkulator (20) über eine Einkoppelleitung (30) erfolgt.
- Anordnung nach Anspruch 4, dadurch gekennzeichnet, dass die Einkoppelleitung (30) widerstandsangepasst ist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Reflexionsfilter (22) wenigstens einen Planarresonator (32) aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19707675A DE19707675A1 (de) | 1997-02-26 | 1997-02-26 | Anordnung zur Entzerrung eines Frequenzsignals, insbesondere für eine Satellitenkommunikationsanlage |
DE19707675 | 1997-02-26 | ||
PCT/DE1997/002580 WO1998038690A1 (de) | 1997-02-26 | 1997-11-06 | Anordnung zur entzerrung eines frequenzsignals, insbesondere für eine satellitenkommunikationsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0962031A1 EP0962031A1 (de) | 1999-12-08 |
EP0962031B1 true EP0962031B1 (de) | 2002-03-06 |
Family
ID=7821533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97949874A Expired - Lifetime EP0962031B1 (de) | 1997-02-26 | 1997-11-06 | Anordnung zur entzerrung eines frequenzsignals, insbesondere für eine satellitenkommunikationsanlage |
Country Status (6)
Country | Link |
---|---|
US (1) | US6307444B1 (de) |
EP (1) | EP0962031B1 (de) |
JP (1) | JP2001513279A (de) |
CA (1) | CA2277996A1 (de) |
DE (2) | DE19707675A1 (de) |
WO (1) | WO1998038690A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001257630A (ja) * | 2000-02-28 | 2001-09-21 | Illinois Super Conductor Corp | 無線通信システム |
DE10020930B4 (de) | 2000-04-28 | 2007-10-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zur Vorbehandlung eines unter Verwendung eines nichtlinearen Verstärkers mit vorgeschaltetem Bandpaßfilter zu übertragenden Signals |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4491808A (en) * | 1981-11-05 | 1985-01-01 | Mitsubishi Denki Kabushiki Kaisha | Equalizer circuit for use in communication unit |
US5172084A (en) * | 1991-12-18 | 1992-12-15 | Space Systems/Loral, Inc. | Miniature planar filters based on dual mode resonators of circular symmetry |
USH1408H (en) * | 1993-04-19 | 1995-01-03 | The United States Of America As Represented By The Secretary Of The Army | Microwave circulator with a planar, biasing, permanent magnet |
US5616538A (en) * | 1994-06-06 | 1997-04-01 | Superconductor Technologies, Inc. | High temperature superconductor staggered resonator array bandpass filter |
-
1997
- 1997-02-26 DE DE19707675A patent/DE19707675A1/de not_active Withdrawn
- 1997-06-11 US US09/380,145 patent/US6307444B1/en not_active Expired - Fee Related
- 1997-11-06 WO PCT/DE1997/002580 patent/WO1998038690A1/de active IP Right Grant
- 1997-11-06 JP JP53713298A patent/JP2001513279A/ja active Pending
- 1997-11-06 CA CA002277996A patent/CA2277996A1/en not_active Abandoned
- 1997-11-06 DE DE59706581T patent/DE59706581D1/de not_active Expired - Fee Related
- 1997-11-06 EP EP97949874A patent/EP0962031B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2277996A1 (en) | 1998-09-03 |
WO1998038690A1 (de) | 1998-09-03 |
DE59706581D1 (de) | 2002-04-11 |
JP2001513279A (ja) | 2001-08-28 |
DE19707675A1 (de) | 1998-08-27 |
US6307444B1 (en) | 2001-10-23 |
EP0962031A1 (de) | 1999-12-08 |
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