NO303660B1 - FremgangsmÕte og system ved kvadraturmodulasjon og digital-til-analog omvandling - Google Patents
FremgangsmÕte og system ved kvadraturmodulasjon og digital-til-analog omvandlingInfo
- Publication number
- NO303660B1 NO303660B1 NO964715A NO964715A NO303660B1 NO 303660 B1 NO303660 B1 NO 303660B1 NO 964715 A NO964715 A NO 964715A NO 964715 A NO964715 A NO 964715A NO 303660 B1 NO303660 B1 NO 303660B1
- Authority
- NO
- Norway
- Prior art keywords
- digital
- analog conversion
- quadrature modulation
- quadrature
- modulation
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title 1
- 238000000034 method Methods 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
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
- H03M7/304—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3042—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator being of the error feedback type, i.e. having loop filter stages in the feedback path only
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO964715A NO303660B1 (no) | 1996-11-07 | 1996-11-07 | FremgangsmÕte og system ved kvadraturmodulasjon og digital-til-analog omvandling |
PCT/NO1997/000291 WO1998020657A1 (en) | 1996-11-07 | 1997-11-05 | A method and system for quadrature modulation and digital-to-analog conversion |
US09/297,276 US6744825B1 (en) | 1996-11-07 | 1997-11-05 | Method and system for quadrature modulation and digital-to-analog conversion |
AU50705/98A AU5070598A (en) | 1996-11-07 | 1997-11-05 | A method and system for quadrature modulation and digital-to-analog conversion |
EP97913541A EP0944978A1 (en) | 1996-11-07 | 1997-11-05 | A method and system for quadrature modulation and digital-to-analog conversion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO964715A NO303660B1 (no) | 1996-11-07 | 1996-11-07 | FremgangsmÕte og system ved kvadraturmodulasjon og digital-til-analog omvandling |
Publications (3)
Publication Number | Publication Date |
---|---|
NO964715D0 NO964715D0 (no) | 1996-11-07 |
NO964715L NO964715L (no) | 1998-05-08 |
NO303660B1 true NO303660B1 (no) | 1998-08-10 |
Family
ID=19900015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO964715A NO303660B1 (no) | 1996-11-07 | 1996-11-07 | FremgangsmÕte og system ved kvadraturmodulasjon og digital-til-analog omvandling |
Country Status (5)
Country | Link |
---|---|
US (1) | US6744825B1 (no) |
EP (1) | EP0944978A1 (no) |
AU (1) | AU5070598A (no) |
NO (1) | NO303660B1 (no) |
WO (1) | WO1998020657A1 (no) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0999645B1 (en) * | 1998-11-03 | 2007-08-08 | Freescale Semiconductor, Inc. | Data converter |
JP4359864B2 (ja) * | 2000-04-03 | 2009-11-11 | 日本ビクター株式会社 | 直交周波数分割多重装置および直交周波数分割多重方法 |
EP1168632A1 (en) * | 2000-06-28 | 2002-01-02 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Communication device with configurable sigma-delta modulator |
JP3836019B2 (ja) * | 2001-11-21 | 2006-10-18 | 松下電器産業株式会社 | 受信装置、送信装置及び送信方法 |
AU2003201480A1 (en) * | 2002-02-15 | 2003-09-04 | Koninklijke Philips Electronics N.V. | Digital modulator |
US7953174B2 (en) * | 2002-03-20 | 2011-05-31 | The Regents Of The University Of California | Radio transmission frequency digital signal generation |
AU2003301612A1 (en) * | 2002-10-25 | 2004-05-13 | The Trustees Of Columbia University In The City Of New York | Time encoding and decoding of a signal |
US7136430B2 (en) | 2003-03-31 | 2006-11-14 | Nortel Networks Limited | Digital receiver and method |
US6987953B2 (en) | 2003-03-31 | 2006-01-17 | Nortel Networks Limited | Digital transmitter and method |
WO2008151137A2 (en) * | 2007-06-01 | 2008-12-11 | The Trustees Of Columbia University In The City Of New York | Real-time time encoding and decoding machines |
WO2009006405A1 (en) | 2007-06-28 | 2009-01-08 | The Trustees Of Columbia University In The City Of New York | Multi-input multi-output time encoding and decoding machines |
US8755447B2 (en) * | 2010-12-22 | 2014-06-17 | Shure Acquisition Holdings, Inc. | Wireless audio equipment using a quadrature modulation system |
WO2012109407A1 (en) | 2011-02-09 | 2012-08-16 | The Trustees Of Columbia University In The City Of New York | Encoding and decoding machine with recurrent neural networks |
US9864045B2 (en) * | 2012-10-08 | 2018-01-09 | Mbda Uk Limited | Radar receivers |
EP3068044A1 (en) * | 2015-03-11 | 2016-09-14 | Nxp B.V. | Module for a radio receiver |
US10680863B2 (en) * | 2015-03-31 | 2020-06-09 | Sony Corporation | Modulation apparatus |
US9978194B2 (en) | 2015-12-22 | 2018-05-22 | Schlage Lock Company Llc | Low power credential detection device for access control system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626803A (en) * | 1985-12-30 | 1986-12-02 | General Electric Company | Apparatus for providing a carrier signal with two digital data streams I-Q modulated thereon |
GB8912780D0 (en) | 1989-06-02 | 1989-07-19 | Gen Electric Co Plc | Analogue to digital converters |
US6230255B1 (en) * | 1990-07-06 | 2001-05-08 | Advanced Micro Devices, Inc. | Communications processor for voice band telecommunications |
JPH07118651B2 (ja) | 1990-11-22 | 1995-12-18 | ヤマハ株式会社 | ディジタル・アナログ変換回路 |
US5410750A (en) * | 1992-02-24 | 1995-04-25 | Raytheon Company | Interference suppressor for a radio receiver |
US5530722A (en) | 1992-10-27 | 1996-06-25 | Ericsson Ge Mobile Communications Inc. | Quadrature modulator with integrated distributed RC filters |
US5588025A (en) * | 1995-03-15 | 1996-12-24 | David Sarnoff Research Center, Inc. | Single oscillator compressed digital information receiver |
US5621345A (en) * | 1995-04-07 | 1997-04-15 | Analog Devices, Inc. | In-phase and quadrature sampling circuit |
US5512865A (en) * | 1995-05-08 | 1996-04-30 | National Semiconductor Corporation | Digital oversampled quadrature modulator |
FI98020C (fi) * | 1995-06-06 | 1997-03-25 | Nokia Mobile Phones Ltd | Digitaalisen signaalin modulointimenetelmä ja modulaattori |
US5923712A (en) * | 1997-05-05 | 1999-07-13 | Glenayre Electronics, Inc. | Method and apparatus for linear transmission by direct inverse modeling |
US6317468B1 (en) * | 1998-06-17 | 2001-11-13 | Rockwell Collins | IF exciter for radio transmitter |
-
1996
- 1996-11-07 NO NO964715A patent/NO303660B1/no not_active IP Right Cessation
-
1997
- 1997-11-05 AU AU50705/98A patent/AU5070598A/en not_active Abandoned
- 1997-11-05 WO PCT/NO1997/000291 patent/WO1998020657A1/en not_active Application Discontinuation
- 1997-11-05 EP EP97913541A patent/EP0944978A1/en not_active Withdrawn
- 1997-11-05 US US09/297,276 patent/US6744825B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NO964715D0 (no) | 1996-11-07 |
EP0944978A1 (en) | 1999-09-29 |
US6744825B1 (en) | 2004-06-01 |
AU5070598A (en) | 1998-05-29 |
NO964715L (no) | 1998-05-08 |
WO1998020657A1 (en) | 1998-05-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM1K | Lapsed by not paying the annual fees |