DE69107679D1 - Quadraturdemodulator. - Google Patents

Quadraturdemodulator.

Info

Publication number
DE69107679D1
DE69107679D1 DE69107679T DE69107679T DE69107679D1 DE 69107679 D1 DE69107679 D1 DE 69107679D1 DE 69107679 T DE69107679 T DE 69107679T DE 69107679 T DE69107679 T DE 69107679T DE 69107679 D1 DE69107679 D1 DE 69107679D1
Authority
DE
Germany
Prior art keywords
quadrature demodulator
demodulator
quadrature
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 - Lifetime
Application number
DE69107679T
Other languages
English (en)
Other versions
DE69107679T2 (de
Inventor
Samuel Ng
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.)
Nokia Mobile Phones UK Ltd
Original Assignee
Technophone Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10676602&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69107679(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Technophone Ltd filed Critical Technophone Ltd
Application granted granted Critical
Publication of DE69107679D1 publication Critical patent/DE69107679D1/de
Publication of DE69107679T2 publication Critical patent/DE69107679T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details
    • H03D1/06—Modifications of demodulators to reduce distortion, e.g. by negative feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE1991607679 1990-05-25 1991-04-11 Quadraturdemodulator. Expired - Lifetime DE69107679T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9011800A GB2244410B (en) 1990-05-25 1990-05-25 Quadrature demodulator

Publications (2)

Publication Number Publication Date
DE69107679D1 true DE69107679D1 (de) 1995-04-06
DE69107679T2 DE69107679T2 (de) 1995-10-19

Family

ID=10676602

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1991607679 Expired - Lifetime DE69107679T2 (de) 1990-05-25 1991-04-11 Quadraturdemodulator.

Country Status (3)

Country Link
EP (1) EP0458452B1 (de)
DE (1) DE69107679T2 (de)
GB (1) GB2244410B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5586147A (en) * 1991-11-25 1996-12-17 Siemens Aktiengesellschaft Osterreich Demodulation method using quadrature modulation
EP0603661A1 (de) * 1992-12-24 1994-06-29 ANT Nachrichtentechnik GmbH Verfahren zur Demodulation von frequenzmodulierten Signalen
SE501604C2 (sv) * 1993-08-13 1995-03-27 Ericsson Telefon Ab L M Metod och anordning för sampling av elektriska signaler
US5479449A (en) * 1994-05-04 1995-12-26 Samsung Electronics Co. Ltd. Digital VSB detector with bandpass phase tracker, as for inclusion in an HDTV receiver.
AU3729895A (en) * 1995-01-12 1996-07-31 Microunity Systems Engineering, Inc. System and method for digital fm demodulation
US5841814A (en) * 1995-10-17 1998-11-24 Paradyne Corporation Sampling system for radio frequency receiver
JPH11504786A (ja) * 1996-02-29 1999-04-27 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 位相分離された入力信号をディジタル処理する受信機
FR2752348B1 (fr) * 1996-08-07 1998-09-18 Telecommunications Sa Demodulateur a circuit numerique de recuperation de porteuse et de rythme
DE60005291T2 (de) * 2000-01-24 2004-07-15 Sony International (Europe) Gmbh Struktur und Methode zur Demodulation
GB2382282B (en) 2001-11-19 2003-11-12 Lucent Technologies Inc A digital demodulator a telecommunications receiver and a method of digital demodulation
CN117526900B (zh) * 2023-10-20 2024-04-09 上海力通通信有限公司 一种iir数字滤波器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419347A (en) * 1977-07-14 1979-02-14 Matsushita Electric Ind Co Ltd Synchronous reproducing system for msk delivery signal
US4737728A (en) * 1986-02-28 1988-04-12 Hitachi, Ltd. Digitally processed demodulator for quadrature modulated signals
US4779054A (en) * 1987-08-17 1988-10-18 General Electric Company Digital inphase/quadrature product detector
US4849991A (en) * 1988-06-29 1989-07-18 Bell Communications Research, Inc. Method and circuitry for determining symbol timing for time division multiple access radio systems
DE3938126A1 (de) * 1989-11-16 1991-05-23 Philips Patentverwaltung Empfaenger mit direkter quadratur-abtastung des eingangssignals

Also Published As

Publication number Publication date
GB2244410A (en) 1991-11-27
EP0458452B1 (de) 1995-03-01
GB2244410B (en) 1994-08-31
GB9011800D0 (en) 1990-07-18
EP0458452A3 (de) 1991-12-18
DE69107679T2 (de) 1995-10-19
EP0458452A2 (de) 1991-11-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition