BR7504650A - Aparelhagem para corrigir automaticamente os efeitos de despolarizacao sobre as ondas eletro-magneticas - Google Patents
Aparelhagem para corrigir automaticamente os efeitos de despolarizacao sobre as ondas eletro-magneticasInfo
- Publication number
- BR7504650A BR7504650A BR7504650*A BR7504650A BR7504650A BR 7504650 A BR7504650 A BR 7504650A BR 7504650 A BR7504650 A BR 7504650A BR 7504650 A BR7504650 A BR 7504650A
- Authority
- BR
- Brazil
- Prior art keywords
- despolarization
- appliance
- effects
- automatically correct
- magnetic waves
- Prior art date
Links
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)
- Radio Relay Systems (AREA)
- Networks Using Active Elements (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT26884/74A IT1020414B (it) | 1974-09-03 | 1974-09-03 | Dispositivo per la correzione au tomatica degli effetti di depola rizzazione di onde elettromagneti che nei collegamenti a radiofre quenza utilizzanti una doppia po larizzazione |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7504650A true BR7504650A (pt) | 1976-08-03 |
Family
ID=11220451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7504650*A BR7504650A (pt) | 1974-09-03 | 1975-07-22 | Aparelhagem para corrigir automaticamente os efeitos de despolarizacao sobre as ondas eletro-magneticas |
Country Status (8)
Country | Link |
---|---|
US (1) | US3986123A (pt) |
JP (1) | JPS5152216A (pt) |
BR (1) | BR7504650A (pt) |
CA (1) | CA1074870A (pt) |
DE (1) | DE2539232C2 (pt) |
FR (1) | FR2284231A1 (pt) |
GB (1) | GB1506889A (pt) |
IT (1) | IT1020414B (pt) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51115717A (en) * | 1975-03-03 | 1976-10-12 | Nec Corp | Cross polarized wave compensating method |
US4112370A (en) * | 1976-08-06 | 1978-09-05 | Signatron, Inc. | Digital communications receiver for dual input signal |
JPS5332609A (en) * | 1976-09-07 | 1978-03-28 | Nec Corp | Detecting system for interference signal by means of time sharing |
JPS5332608A (en) * | 1976-09-07 | 1978-03-28 | Nec Corp | Compensation system for angular frequency variation |
JPS5362919A (en) * | 1976-11-18 | 1978-06-05 | Kokusai Denshin Denwa Co Ltd | Axial radio compensator system |
US4191926A (en) * | 1977-09-16 | 1980-03-04 | Communications Satellite Corporation | Method and apparatus for interference cancellation at base-band using multiplication of the desired interfering carriers |
JPS5945309B2 (ja) * | 1978-02-08 | 1984-11-05 | ケイディディ株式会社 | 交さ偏波補償方式 |
US4220923A (en) * | 1978-03-29 | 1980-09-02 | Harris Corporation | Adaptive interference reduction system for crosstalk cancellation in a dual polarization system |
US4292685A (en) * | 1978-05-31 | 1981-09-29 | Lee Lin Shan | Apparatus and method for controlling crosspolarization of signals in a frequency reuse system |
US4293945A (en) * | 1979-08-29 | 1981-10-06 | Communications Satellite Corporation | Multichannel correlation receiver for determining depolarization of signals along signal propagation paths |
US4283795A (en) * | 1979-10-03 | 1981-08-11 | Bell Telephone Laboratories, Incorporated | Adaptive cross-polarization interference cancellation arrangements |
US4479258A (en) * | 1981-09-30 | 1984-10-23 | Nippon Electric Co., Ltd. | Cross-polarization crosstalk canceller |
AU553961B2 (en) * | 1981-11-16 | 1986-07-31 | Nippon Electric Co. Ltd. | Satellite earth station output control |
US4513429A (en) * | 1981-12-03 | 1985-04-23 | The United States Of America As Represented By The Secretary Of The Air Force | Sample data phase locked loop for adaptive doppler tracker |
US4490684A (en) * | 1983-01-03 | 1984-12-25 | Motorola, Inc. | Adaptive quadrature combining apparatus |
US5036331A (en) * | 1989-09-18 | 1991-07-30 | The Boeing Company | Adaptive polarization combiner |
JP2666702B2 (ja) * | 1993-10-29 | 1997-10-22 | 日本電気株式会社 | 交差偏波補償装置 |
US6185408B1 (en) * | 1997-09-03 | 2001-02-06 | Motorola, Inc. | Method and apparatus for mitigating the effects of a communications channel using polarized signals |
WO2002069443A1 (en) * | 2001-02-28 | 2002-09-06 | Itt Manufacturing Enterprises, Inc. | Integrated beamformer/method architecture |
US8922772B2 (en) | 2011-10-31 | 2014-12-30 | Northrop Grumman Systems Corporation | Multichannel polarization stabilization employing synchronous phase-locking methods |
US8922771B2 (en) | 2011-10-31 | 2014-12-30 | Northrop Grumman Systems Corporation | Multichannel polarization stabilizer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3728644A (en) * | 1971-11-01 | 1973-04-17 | Bell Telephone Labor Inc | Polarization transformation apparatus |
US3735266A (en) * | 1971-12-20 | 1973-05-22 | Bell Telephone Labor Inc | Method and apparatus for reducing crosstalk on cross-polarized communication links |
US3883872A (en) * | 1973-06-28 | 1975-05-13 | Nasa | System for interference signal nulling by polarization adjustment |
US3914764A (en) * | 1974-03-04 | 1975-10-21 | Bell Telephone Labor Inc | Apparatus for reducing cross coupling between orthogonal polarizations in satellite communication systems |
-
1974
- 1974-09-03 IT IT26884/74A patent/IT1020414B/it active
-
1975
- 1975-07-22 BR BR7504650*A patent/BR7504650A/pt unknown
- 1975-08-29 FR FR7526659A patent/FR2284231A1/fr active Granted
- 1975-09-01 JP JP50105869A patent/JPS5152216A/ja active Pending
- 1975-09-02 CA CA234,586A patent/CA1074870A/en not_active Expired
- 1975-09-03 DE DE2539232A patent/DE2539232C2/de not_active Expired
- 1975-09-03 GB GB36328/75A patent/GB1506889A/en not_active Expired
- 1975-09-03 US US05/610,042 patent/US3986123A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB1506889A (en) | 1978-04-12 |
DE2539232A1 (de) | 1976-03-11 |
FR2284231A1 (fr) | 1976-04-02 |
DE2539232C2 (de) | 1983-12-15 |
US3986123A (en) | 1976-10-12 |
CA1074870A (en) | 1980-04-01 |
JPS5152216A (pt) | 1976-05-08 |
IT1020414B (it) | 1977-12-20 |
FR2284231B1 (pt) | 1978-03-17 |
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