CA1076248A - Antenna system with automatic depolarization correction - Google Patents
Antenna system with automatic depolarization correctionInfo
- Publication number
- CA1076248A CA1076248A CA281,267A CA281267A CA1076248A CA 1076248 A CA1076248 A CA 1076248A CA 281267 A CA281267 A CA 281267A CA 1076248 A CA1076248 A CA 1076248A
- Authority
- CA
- Canada
- Prior art keywords
- polarization
- waves
- coupled
- coupler
- control signal
- 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
Links
- 230000028161 membrane depolarization Effects 0.000 title claims abstract description 5
- 230000010287 polarization Effects 0.000 claims abstract description 125
- 239000005433 ionosphere Substances 0.000 claims abstract description 18
- 238000001228 spectrum Methods 0.000 claims abstract description 10
- 230000010363 phase shift Effects 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000006872 improvement Effects 0.000 claims description 6
- 238000005388 cross polarization Methods 0.000 claims description 3
- 230000001702 transmitter Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 18
- 150000002500 ions Chemical class 0.000 description 12
- 238000004891 communication Methods 0.000 description 10
- 230000006854 communication Effects 0.000 description 10
- 238000002955 isolation Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 206010064127 Solar lentigo Diseases 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- UUQHAAWMCLITRZ-KEOOTSPTSA-N 2-[(3S,6S,12S,20R,23S)-20-carbamoyl-12-[3-(diaminomethylideneamino)propyl]-3-(1H-indol-3-ylmethyl)-2,5,8,11,14,22-hexaoxo-17,18-dithia-1,4,7,10,13,21-hexazabicyclo[21.3.0]hexacosan-6-yl]acetic acid Chemical compound N1C(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CCCN=C(N)N)NC(=O)CCSSC[C@@H](C(N)=O)NC(=O)[C@@H]2CCCN2C(=O)[C@@H]1CC1=CNC2=CC=CC=C12 UUQHAAWMCLITRZ-KEOOTSPTSA-N 0.000 description 1
- 241000271566 Aves Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009290 primary effect Effects 0.000 description 1
- 238000010396 two-hybrid screening Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/002—Reducing depolarization effects
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Transmission System (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/701,422 US4060808A (en) | 1976-06-30 | 1976-06-30 | Antenna system with automatic depolarization correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076248A true CA1076248A (en) | 1980-04-22 |
Family
ID=24817309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA281,267A Expired CA1076248A (en) | 1976-06-30 | 1977-06-23 | Antenna system with automatic depolarization correction |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4060808A (https=) |
| JP (1) | JPS605084B2 (https=) |
| CA (1) | CA1076248A (https=) |
| DE (1) | DE2729651C2 (https=) |
| FR (1) | FR2357077A1 (https=) |
| GB (1) | GB1567065A (https=) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2921600A1 (de) * | 1979-05-28 | 1980-12-04 | Siemens Ag | Feldeffekttransistor mit kurzer kanallaenge |
| US4308541A (en) * | 1979-12-21 | 1981-12-29 | Nasa | Antenna feed system for receiving circular polarization and transmitting linear polarization |
| JPS57204710U (https=) * | 1981-06-24 | 1982-12-27 | ||
| WO1990003667A1 (en) * | 1988-09-30 | 1990-04-05 | Astec International Limited | Automatic polarization control system for tvro receivers |
| US4785302A (en) * | 1985-10-30 | 1988-11-15 | Capetronic (Bsr) Ltd. | Automatic polarization control system for TVRO receivers |
| US4823341A (en) * | 1986-08-14 | 1989-04-18 | Hughes Aircraft Company | Satellite communications system having frequency addressable high gain downlink beams |
| US6295443B1 (en) | 1998-11-30 | 2001-09-25 | Scott C Matthew | Automatic tuning AM transmitter |
| GB2354655A (en) * | 1999-09-23 | 2001-03-28 | Matra Marconi Space Uk Ltd | Mitigation of Faraday rotation in space bourne radar |
| DE60135661D1 (de) * | 2001-10-11 | 2008-10-16 | Eutelsat Sa | Verfahren und System zur Polarisationsausrichtung einer Bodenstationantenne mit der Polarisationsachse einer Satellitenantenne |
| US6608590B1 (en) * | 2002-03-04 | 2003-08-19 | Orbit Communication Ltd. | Alignment of antenna polarization axes |
| US6922169B2 (en) * | 2003-02-14 | 2005-07-26 | Andrew Corporation | Antenna, base station and power coupler |
| US6919839B1 (en) * | 2004-11-09 | 2005-07-19 | Harris Corporation | Synthetic aperture radar (SAR) compensating for ionospheric distortion based upon measurement of the group delay, and associated methods |
| US6914553B1 (en) * | 2004-11-09 | 2005-07-05 | Harris Corporation | Synthetic aperture radar (SAR) compensating for ionospheric distortion based upon measurement of the Faraday rotation, and associated methods |
| US7590191B1 (en) * | 2006-05-01 | 2009-09-15 | Nigel Macrae | Means for transmitting two signals on the same frequency at the same time for use in mobile and fixed applications |
| US7330151B1 (en) * | 2006-12-21 | 2008-02-12 | The Boeing Company | Alignment of an elliptical beam of an antenna |
| FR2939971B1 (fr) * | 2008-12-16 | 2011-02-11 | Thales Sa | Ensemble d'excitation compact pour la generation d'une polarisation circulaire dans une antenne et procede d'elaboration d'un tel ensemble d'excitation |
| US7957425B2 (en) * | 2009-07-07 | 2011-06-07 | Nigel Iain Stuart Macrae | Communicating distinct data using polarized data signals |
| US8594602B2 (en) * | 2011-10-31 | 2013-11-26 | Raytheon Applied Signal Technology, Inc. | Fast cross-pole corrector |
| US10871550B2 (en) * | 2018-08-07 | 2020-12-22 | 7hugs Labs SAS | Polarization axis attenuation and cross polarization resistant antenna orientation assembly for tracked object |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE788467A (fr) * | 1971-09-09 | 1973-01-02 | Western Electric Co | Reseau de branchement selectif en frequences et insensible a lapolarisation |
| US3728643A (en) * | 1971-11-01 | 1973-04-17 | Bell Telephone Labor Inc | Apparatus for transforming nonorthogonal elliptically polarized waves into orthogonal linearly polarized waves |
| US3914764A (en) * | 1974-03-04 | 1975-10-21 | Bell Telephone Labor Inc | Apparatus for reducing cross coupling between orthogonal polarizations in satellite communication systems |
-
1976
- 1976-06-30 US US05/701,422 patent/US4060808A/en not_active Expired - Lifetime
-
1977
- 1977-06-21 GB GB25822/77A patent/GB1567065A/en not_active Expired
- 1977-06-23 CA CA281,267A patent/CA1076248A/en not_active Expired
- 1977-06-29 JP JP52078465A patent/JPS605084B2/ja not_active Expired
- 1977-06-30 DE DE2729651A patent/DE2729651C2/de not_active Expired
- 1977-06-30 FR FR7720187A patent/FR2357077A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS605084B2 (ja) | 1985-02-08 |
| FR2357077B1 (https=) | 1981-08-21 |
| FR2357077A1 (fr) | 1978-01-27 |
| GB1567065A (en) | 1980-05-08 |
| DE2729651A1 (de) | 1978-02-23 |
| JPS5313333A (en) | 1978-02-06 |
| US4060808A (en) | 1977-11-29 |
| DE2729651C2 (de) | 1985-10-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |