AU624742B2 - Satellite beam-forming network system having improved beam shaping - Google Patents
Satellite beam-forming network system having improved beam shaping Download PDFInfo
- Publication number
- AU624742B2 AU624742B2 AU64765/90A AU6476590A AU624742B2 AU 624742 B2 AU624742 B2 AU 624742B2 AU 64765/90 A AU64765/90 A AU 64765/90A AU 6476590 A AU6476590 A AU 6476590A AU 624742 B2 AU624742 B2 AU 624742B2
- Authority
- AU
- Australia
- Prior art keywords
- signals
- beams
- frequency
- target area
- additional
- 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.)
- Ceased
Links
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- 239000011159 matrix material Substances 0.000 claims description 63
- 238000009826 distribution Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- 230000009466 transformation Effects 0.000 claims description 19
- 230000005670 electromagnetic radiation Effects 0.000 claims description 11
- 230000010363 phase shift Effects 0.000 claims description 11
- 230000001934 delay Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 239000004020 conductor Substances 0.000 description 9
- 230000001419 dependent effect Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000010339 dilation Effects 0.000 description 4
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- 108010076504 Protein Sorting Signals Proteins 0.000 description 3
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- 238000009828 non-uniform distribution Methods 0.000 description 3
- 230000000750 progressive effect Effects 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- WYFYSTBFFDOVJW-UHFFFAOYSA-L 2-[4-[4-(3,5-diphenyltetrazol-2-ium-2-yl)phenyl]phenyl]-3,5-diphenyltetrazol-2-ium;dichloride Chemical compound [Cl-].[Cl-].C1=CC=CC=C1C(N=[N+]1C=2C=CC(=CC=2)C=2C=CC(=CC=2)[N+]=2N(N=C(N=2)C=2C=CC=CC=2)C=2C=CC=CC=2)=NN1C1=CC=CC=C1 WYFYSTBFFDOVJW-UHFFFAOYSA-L 0.000 description 1
- 241000270276 Natrix Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- NDDAHWYSQHTHNT-UHFFFAOYSA-N indapamide Chemical compound CC1CC2=CC=CC=C2N1NC(=O)C1=CC=C(Cl)C(S(N)(=O)=O)=C1 NDDAHWYSQHTHNT-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/40—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with phasing matrix
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
- H01Q3/2611—Means for null steering; Adaptive interference nulling
- H01Q3/2629—Combination of a main antenna unit with an auxiliary antenna unit
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43405989A | 1989-11-08 | 1989-11-08 | |
| US434059 | 1989-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU6476590A AU6476590A (en) | 1991-05-16 |
| AU624742B2 true AU624742B2 (en) | 1992-06-18 |
Family
ID=23722654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU64765/90A Ceased AU624742B2 (en) | 1989-11-08 | 1990-10-17 | Satellite beam-forming network system having improved beam shaping |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0427201B1 (de) |
| JP (1) | JPH03172003A (de) |
| AU (1) | AU624742B2 (de) |
| CA (1) | CA2027456C (de) |
| DE (1) | DE69021993T2 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3054992A (en) * | 1991-10-28 | 1993-06-07 | Calling Communications Corporation | Satellite communication system |
| GB2288913B (en) * | 1994-04-18 | 1999-02-24 | Int Maritime Satellite Organiz | Satellite payload apparatus with beamformer |
| WO2012161612A1 (en) | 2011-05-23 | 2012-11-29 | Autonomous Non-Commercial Organization "Research Institute "Sitronics Labs"" | Electronically beam steerable antenna device |
| RU2530330C1 (ru) | 2013-03-22 | 2014-10-10 | Общество с ограниченной ответственностью "Радио Гигабит" | Станция радиорелейной связи со сканирующей антенной |
| RU2595941C2 (ru) * | 2014-05-06 | 2016-08-27 | Общество с ограниченной ответственностью "Радио Гигабит" | Система радиорелейной связи с подстройкой луча |
| US9973266B1 (en) * | 2017-06-12 | 2018-05-15 | Ast & Science, Llc | System and method for high throughput fractionated satellites (HTFS) for direct connectivity to and from end user devices and terminals using flight formations of small or very small satellites |
| IT202000005458A1 (it) * | 2020-03-13 | 2021-09-13 | Torino Politecnico | Sistema e metodo per individuare spazialmente corpi estranei all'interno di un prodotto in base a caratteristiche dielettriche di detto prodotto |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU604082B2 (en) * | 1986-12-22 | 1990-12-06 | Hughes Electronics Corporation | Steerable beam antenna system using butler matrix |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595929A (en) * | 1982-04-13 | 1986-06-17 | Communications Satellite Corporation | Scheme for aberration correction in scanning or multiple beam confocal antenna system |
-
1990
- 1990-10-12 CA CA 2027456 patent/CA2027456C/en not_active Expired - Fee Related
- 1990-10-17 AU AU64765/90A patent/AU624742B2/en not_active Ceased
- 1990-11-06 EP EP19900121219 patent/EP0427201B1/de not_active Expired - Lifetime
- 1990-11-06 DE DE1990621993 patent/DE69021993T2/de not_active Expired - Fee Related
- 1990-11-08 JP JP30375190A patent/JPH03172003A/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU604082B2 (en) * | 1986-12-22 | 1990-12-06 | Hughes Electronics Corporation | Steerable beam antenna system using butler matrix |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69021993T2 (de) | 1996-02-22 |
| CA2027456C (en) | 1995-09-26 |
| JPH03172003A (ja) | 1991-07-25 |
| EP0427201A3 (en) | 1991-12-11 |
| CA2027456A1 (en) | 1991-05-09 |
| DE69021993D1 (de) | 1995-10-05 |
| EP0427201A2 (de) | 1991-05-15 |
| EP0427201B1 (de) | 1995-08-30 |
| AU6476590A (en) | 1991-05-16 |
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