DE69008498D1 - Amplitudenmodulation-Übertragungssystem mit unterdrücktem Träger, das die Polarität des übertragenen Signals erhält. - Google Patents
Amplitudenmodulation-Übertragungssystem mit unterdrücktem Träger, das die Polarität des übertragenen Signals erhält.Info
- Publication number
- DE69008498D1 DE69008498D1 DE69008498T DE69008498T DE69008498D1 DE 69008498 D1 DE69008498 D1 DE 69008498D1 DE 69008498 T DE69008498 T DE 69008498T DE 69008498 T DE69008498 T DE 69008498T DE 69008498 D1 DE69008498 D1 DE 69008498D1
- Authority
- DE
- Germany
- Prior art keywords
- polarity
- maintains
- transmission system
- amplitude modulation
- transmitted 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/68—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for wholly or partially suppressing the carrier or one side band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
- H04N5/40—Modulation circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8916528A FR2655788B1 (fr) | 1989-12-11 | 1989-12-11 | Systeme de transmission a modulation d'amplitude a porteuse supprimee, conservant la polarite du signal transmis. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69008498D1 true DE69008498D1 (de) | 1994-06-01 |
DE69008498T2 DE69008498T2 (de) | 1994-12-01 |
Family
ID=9388488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69008498T Expired - Fee Related DE69008498T2 (de) | 1989-12-11 | 1990-12-07 | Amplitudenmodulation-Übertragungssystem mit unterdrücktem Träger, das die Polarität des übertragenen Signals erhält. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5077542A (de) |
EP (1) | EP0433198B1 (de) |
DE (1) | DE69008498T2 (de) |
FR (1) | FR2655788B1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5231364A (en) * | 1992-06-24 | 1993-07-27 | Nokia Mobile Phones, Ltd. | Phaseshift network for an IQ modulator |
US5619248A (en) * | 1993-07-06 | 1997-04-08 | Plessey Semiconductors Limited | Video signal distribution system microwave radio link for transmitting double sideband phase modulated carrier signal |
DE4340722C1 (de) * | 1993-11-30 | 1995-04-27 | Deutsche Forsch Luft Raumfahrt | Einrichtung zum sendeseitigen Unterdrücken eines bei Modulation entstehenden Restträgers |
WO1995018509A1 (en) * | 1993-12-29 | 1995-07-06 | Zenith Electronics Corporation | Polarity selection circuit for bi-phase stable fpll |
US5675284A (en) * | 1996-05-13 | 1997-10-07 | Zenith Electronics Corporation | Frequency lock indicator for FPLL demodulated signal having a pilot |
US5668498A (en) * | 1996-05-13 | 1997-09-16 | Zenith Electronics Corporation | Controlling FPLL polarity using pilot signal and polarity inverter |
US5781327A (en) * | 1996-08-19 | 1998-07-14 | Trw Inc. | Optically efficient high dynamic range electro-optic modulator |
US6058291A (en) * | 1997-12-03 | 2000-05-02 | 3Com Corporation | Methods and apparatus for carrier suppression in a radio modulator |
US6600747B1 (en) | 1998-09-17 | 2003-07-29 | Dell Products L.P. | Video monitor multiplexing circuit |
AU2002356810A1 (en) * | 2001-10-16 | 2003-04-28 | Rfstream Corporation | Monolithic integrated circuit for a television receiver |
US7199844B2 (en) * | 2002-05-28 | 2007-04-03 | Rfstream Corporation | Quadratic nyquist slope filter |
US7116961B2 (en) * | 2002-05-29 | 2006-10-03 | Rfstream Corporation | Image rejection quadratic filter |
US6882245B2 (en) * | 2002-06-05 | 2005-04-19 | Rf Stream Corporation | Frequency discrete LC filter bank |
WO2003105464A2 (en) * | 2002-06-05 | 2003-12-18 | Ukom, Inc. | Quadratic video demodulation with baseband nyquist filter |
US6940365B2 (en) * | 2003-07-18 | 2005-09-06 | Rfstream Corporation | Methods and apparatus for an improved discrete LC filter |
US7369624B2 (en) * | 2004-06-01 | 2008-05-06 | Orbital Sciences Corp. | Carrier suppression type modulator with encoded modulating signals |
JP2008533840A (ja) * | 2005-03-11 | 2008-08-21 | 株式会社RfStream | 無線周波誘導容量性フィルタ回路トポロジー |
WO2006099161A2 (en) | 2005-03-11 | 2006-09-21 | Rfstream Corporation | A mosfet temperature compensation current source |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566036A (en) * | 1965-01-07 | 1971-02-23 | Gen Dynamics Corp | Synchronous double sideband suppressed carrier multichannel system |
BE766847A (fr) * | 1971-05-07 | 1971-11-08 | Acec | Procede de transmission d'informations avec restitution automatique de l'onde porteuse dans le recepteur, |
DE2247190C3 (de) * | 1972-09-26 | 1980-12-04 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zur Einstellung der Trägerphase bei der Übertragung von Signalen |
US3984778A (en) * | 1974-11-13 | 1976-10-05 | Rixon Inc. | Carrier recovery scheme for a SSB-SC signal |
JPH0714170B2 (ja) * | 1983-11-30 | 1995-02-15 | 富士通株式会社 | 搬送波再生回路 |
US4618996A (en) * | 1984-04-24 | 1986-10-21 | Avnet, Inc. | Dual pilot phase lock loop for radio frequency transmission |
-
1989
- 1989-12-11 FR FR8916528A patent/FR2655788B1/fr not_active Expired - Fee Related
-
1990
- 1990-12-07 DE DE69008498T patent/DE69008498T2/de not_active Expired - Fee Related
- 1990-12-07 EP EP90460045A patent/EP0433198B1/de not_active Expired - Lifetime
- 1990-12-07 US US07/624,411 patent/US5077542A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0433198A1 (de) | 1991-06-19 |
US5077542A (en) | 1991-12-31 |
FR2655788B1 (fr) | 1995-08-04 |
DE69008498T2 (de) | 1994-12-01 |
EP0433198B1 (de) | 1994-04-27 |
FR2655788A1 (fr) | 1991-06-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |