NO964774L - Demodulatortrinn for direkte demodulering av et signal modulert i fasekvadratur, og mottager med sådant trinn - Google Patents
Demodulatortrinn for direkte demodulering av et signal modulert i fasekvadratur, og mottager med sådant trinnInfo
- Publication number
- NO964774L NO964774L NO964774A NO964774A NO964774L NO 964774 L NO964774 L NO 964774L NO 964774 A NO964774 A NO 964774A NO 964774 A NO964774 A NO 964774A NO 964774 L NO964774 L NO 964774L
- Authority
- NO
- Norway
- Prior art keywords
- modulated
- phase quadrature
- signals
- signal
- receives
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Oppfinnelsen gjelder et demodulatortrinn (20) for direkte demoduiering av et signal (RF) modulert i fasekvadratur, idet trinnet ut fra nevnte modulerte signal avgir to basisbånd- signaler (I, Q). i henhold fil oppfinnelsen omfatter demodulatortrlnnet: - en tilpasset 90°-koblingskrets (21) som nevnte modulerte signal (RF) tilføres og som avgir to signaler modulert i fasekvadratur, - to lavstøyforsterkere (27, 28) med identiske spesifikasjoner, idet hver av nevnte forsterkere mottar et av nevnte signaler modulert i fasekvadratur og avgir et forsterket signal, og - to blandetrinn (15, 16) som hvert mottar et av nevnte forsterkede signaler og et felles signal fra en lokal oscillator (30), idet nevnte blandetrinn avgir nevnte basisbåndsignaler (I, Q). Lavstøyforsterkerene (27, 28), 90°-koblingskretsen (21) og blandetrinnne (15, 16) kan eventuelt være integrert i en og samme MMIC-krets. Oppfinnelsen kan anvendes i en mottager for mottagning av fasekvadratur-modulerte signaler som er vage med hensyn til frekvens.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513417A FR2741221B1 (fr) | 1995-11-13 | 1995-11-13 | Etage de demodulation directe d'un signal module en quadrature de phase et recepteur comprenant un tel etage de demodulation |
Publications (2)
Publication Number | Publication Date |
---|---|
NO964774D0 NO964774D0 (no) | 1996-11-11 |
NO964774L true NO964774L (no) | 1997-05-14 |
Family
ID=9484505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO964774A NO964774L (no) | 1995-11-13 | 1996-11-11 | Demodulatortrinn for direkte demodulering av et signal modulert i fasekvadratur, og mottager med sådant trinn |
Country Status (5)
Country | Link |
---|---|
US (1) | US5760645A (no) |
EP (1) | EP0773654A1 (no) |
CA (1) | CA2190178A1 (no) |
FR (1) | FR2741221B1 (no) |
NO (1) | NO964774L (no) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6466773B1 (en) * | 1997-05-15 | 2002-10-15 | Harris Corporation | Reflective power splitter for redundant receivers |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US6091940A (en) | 1998-10-21 | 2000-07-18 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6694128B1 (en) | 1998-08-18 | 2004-02-17 | Parkervision, Inc. | Frequency synthesizer using universal frequency translation technology |
US6061551A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US6434199B1 (en) * | 1998-10-20 | 2002-08-13 | Trw Inc. | 2N-QAM macrocell |
US6813485B2 (en) | 1998-10-21 | 2004-11-02 | Parkervision, Inc. | Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
US6061555A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6542722B1 (en) | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
US6560301B1 (en) | 1998-10-21 | 2003-05-06 | Parkervision, Inc. | Integrated frequency translation and selectivity with a variety of filter embodiments |
US6049706A (en) | 1998-10-21 | 2000-04-11 | Parkervision, Inc. | Integrated frequency translation and selectivity |
US6704549B1 (en) | 1999-03-03 | 2004-03-09 | Parkvision, Inc. | Multi-mode, multi-band communication system |
US6704558B1 (en) | 1999-01-22 | 2004-03-09 | Parkervision, Inc. | Image-reject down-converter and embodiments thereof, such as the family radio service |
US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
US7460584B2 (en) | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
DE102004054442A1 (de) * | 2004-11-10 | 2006-05-24 | Fh Aachen | Antennenarchitektur und Koppler |
US10225129B2 (en) * | 2017-03-30 | 2019-03-05 | Edward P. Callaghan | Method and apparatus for the extrication of quadrature pairs of amplitude modulated signals from intermingled extraneous signals |
US11329375B1 (en) | 2020-02-13 | 2022-05-10 | Rockwell Collins, Inc. | Differential quadrature radiating elements and feeds |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2337468A1 (fr) * | 1975-12-29 | 1977-07-29 | Trt Telecom Radio Electr | Discriminateur de phase pour recepteur d'un systeme de transmission de donnees |
JPS55132132A (en) * | 1979-03-30 | 1980-10-14 | Nec Corp | Phase synchronizing circuit |
JPS5676637A (en) * | 1979-11-29 | 1981-06-24 | Fujitsu Ltd | Phase synchronizing circuit |
US4379264A (en) * | 1980-08-11 | 1983-04-05 | Mobil Oil Corporation | Broadband phase shifter |
GB2101821B (en) * | 1981-07-16 | 1984-11-14 | Standard Telephones Cables Ltd | Radio receiver for frequency shift keyed signals |
GB2155262B (en) * | 1984-03-01 | 1988-01-20 | Standard Telephones Cables Ltd | Radio receiver |
JP2563338B2 (ja) * | 1987-06-02 | 1996-12-11 | 松下電器産業株式会社 | 低雑音コンバ−タ |
US5285120A (en) * | 1988-09-15 | 1994-02-08 | Rockwell International Corporation | Broadband phase splitter |
JP3148043B2 (ja) * | 1993-05-06 | 2001-03-19 | 富士通株式会社 | 復調装置 |
US5442582A (en) * | 1994-03-04 | 1995-08-15 | Loral Aerospace Corp. | Transversal filter allrate equalizer for use at intermediate frequency |
-
1995
- 1995-11-13 FR FR9513417A patent/FR2741221B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-07 EP EP96402367A patent/EP0773654A1/fr not_active Withdrawn
- 1996-11-11 NO NO964774A patent/NO964774L/no not_active Application Discontinuation
- 1996-11-12 CA CA002190178A patent/CA2190178A1/fr not_active Abandoned
- 1996-11-12 US US08/744,146 patent/US5760645A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2190178A1 (fr) | 1997-05-14 |
FR2741221A1 (fr) | 1997-05-16 |
NO964774D0 (no) | 1996-11-11 |
US5760645A (en) | 1998-06-02 |
FR2741221B1 (fr) | 1997-12-05 |
EP0773654A1 (fr) | 1997-05-14 |
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Legal Events
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |