DE3470985D1 - Digital filter with variable phase and bandpass - Google Patents

Digital filter with variable phase and bandpass

Info

Publication number
DE3470985D1
DE3470985D1 DE8484402704T DE3470985T DE3470985D1 DE 3470985 D1 DE3470985 D1 DE 3470985D1 DE 8484402704 T DE8484402704 T DE 8484402704T DE 3470985 T DE3470985 T DE 3470985T DE 3470985 D1 DE3470985 D1 DE 3470985D1
Authority
DE
Germany
Prior art keywords
bandpass
digital filter
variable phase
variable
phase
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
Application number
DE8484402704T
Other languages
English (en)
Inventor
Van Cang Luc Pham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE3470985D1 publication Critical patent/DE3470985D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0405—Recursive filters comprising a ROM addressed by the input and output data signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0607—Non-recursive filters comprising a ROM addressed by the input data signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/08—Networks for phase shifting

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Complex Calculations (AREA)
DE8484402704T 1983-12-30 1984-12-21 Digital filter with variable phase and bandpass Expired DE3470985D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8321102A FR2557746B1 (fr) 1983-12-30 1983-12-30 Filtre numerique a bande passante et phase variables

Publications (1)

Publication Number Publication Date
DE3470985D1 true DE3470985D1 (en) 1988-06-09

Family

ID=9295761

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484402704T Expired DE3470985D1 (en) 1983-12-30 1984-12-21 Digital filter with variable phase and bandpass

Country Status (4)

Country Link
US (1) US4709343A (de)
EP (1) EP0147326B1 (de)
DE (1) DE3470985D1 (de)
FR (1) FR2557746B1 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5053984A (en) * 1989-11-21 1991-10-01 Sgs Thomson Microelectronics S.R.L. Memory for programmable digital filter
USRE37440E1 (en) 1988-07-22 2001-11-06 Stmicroelectronics S.R.L. Memory for programmable digital filter
IT1227520B (it) * 1988-12-06 1991-04-12 Sgs Thomson Microelectronics Filtro digitale programmabile
DE3841268A1 (de) * 1988-12-08 1990-06-13 Thomson Brandt Gmbh Digitales filter
FR2644960B1 (fr) * 1989-03-21 1991-05-31 Thomson Consumer Electronics Dispositif de detection de fin de connexion a un programme payant recu par un poste d'abonne via un reseau de teledistribution interactive
US5117385A (en) * 1990-03-16 1992-05-26 International Business Machines Corporation Table lookup multiplier with digital filter
US5255216A (en) * 1991-08-16 1993-10-19 International Business Machines Corporation Reduced hardware look up table multiplier
US5487089A (en) * 1992-02-17 1996-01-23 Matsushita Electric Industrial Co., Ltd. Nyquist filter for digital modulation
DE69222626T2 (de) * 1992-04-10 1998-02-05 St Microelectronics Srl Hochauflösendes Digitalfilter
US5287299A (en) * 1992-05-26 1994-02-15 Monolith Technologies Corporation Method and apparatus for implementing a digital filter employing coefficients expressed as sums of 2 to an integer power
US5479363A (en) * 1993-04-30 1995-12-26 The Regents Of The University Of California Programmable digital signal processor using switchable unit-delays for optimal hardware allocation
KR0181165B1 (ko) * 1995-06-29 1999-04-01 김광호 유한장 임펄스응답 필터 및 그 필터링 방법
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US6487190B1 (en) * 1996-06-27 2002-11-26 Interdigital Technology Corporation Efficient multichannel filtering for CDMA modems
US7072380B2 (en) 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US6788662B2 (en) 1995-06-30 2004-09-07 Interdigital Technology Corporation Method for adaptive reverse power control for spread-spectrum communications
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
EP0813300A1 (de) * 1996-06-12 1997-12-17 Loral Aerospace Corporation Signalformgeber mit symboladressierten nachschlagetabellebasierten transversalen Filtern
JPH10333887A (ja) * 1997-05-29 1998-12-18 Sharp Corp 積和演算回路
US6320619B1 (en) * 1997-12-11 2001-11-20 Intel Corporation Flicker filter circuit
EP0971482A1 (de) * 1998-07-09 2000-01-12 Canon Kabushiki Kaisha Vorrichtung und Verfahren zur digitalen Signaltransformation
US6405227B1 (en) 1998-12-31 2002-06-11 New Japan Radio Co., Ltd. Digital crossover and parametric equalizer
US6243729B1 (en) * 1998-12-31 2001-06-05 Texas Instruments Incorporated Digital finite-impulse-response (FIR) filter with a modified architecture based on high order Radix-N numbering
US6735607B2 (en) * 2001-06-02 2004-05-11 Lockheed Martin Corporation Transparent data access and interpolation apparatus and method therefor
US20030195913A1 (en) * 2002-04-10 2003-10-16 Murphy Charles Douglas Shared multiplication for constant and adaptive digital filters
US7366746B2 (en) * 2004-02-12 2008-04-29 Xerox Corporation Finite impulse response filter method and apparatus
US7987222B1 (en) * 2004-04-22 2011-07-26 Altera Corporation Method and apparatus for implementing a multiplier utilizing digital signal processor block memory extension
US20060036664A1 (en) * 2004-08-13 2006-02-16 Nokia Corporation Efficient FIR filter suitable for use with high order modulation radio frequency transmitters
US11210066B2 (en) * 2020-05-04 2021-12-28 International Business Machines Corporation Fixed value multiplication using field-programmable gate array

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2116224B1 (de) * 1970-10-29 1974-10-31 Ibm France
US3993890A (en) * 1975-09-29 1976-11-23 The United States Of America As Represented By The Secretary Of The Air Force Combinatorial digital filter
US4374426A (en) * 1980-11-14 1983-02-15 Burlage Donald W Digital equalizer for high speed communication channels
GB2095067B (en) * 1981-03-12 1984-10-03 Standard Telephones Cables Ltd Digital filter arrangement

Also Published As

Publication number Publication date
US4709343A (en) 1987-11-24
EP0147326B1 (de) 1988-05-04
EP0147326A2 (de) 1985-07-03
EP0147326A3 (en) 1985-08-07
FR2557746B1 (fr) 1986-04-11
FR2557746A1 (fr) 1985-07-05

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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