DE3726181A1 - Verfahren zum ueberlagerungsempfang eines modulierten signals - Google Patents

Verfahren zum ueberlagerungsempfang eines modulierten signals

Info

Publication number
DE3726181A1
DE3726181A1 DE19873726181 DE3726181A DE3726181A1 DE 3726181 A1 DE3726181 A1 DE 3726181A1 DE 19873726181 DE19873726181 DE 19873726181 DE 3726181 A DE3726181 A DE 3726181A DE 3726181 A1 DE3726181 A1 DE 3726181A1
Authority
DE
Germany
Prior art keywords
frequency
local oscillator
premixer
oscillator
mixers
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.)
Withdrawn
Application number
DE19873726181
Other languages
German (de)
English (en)
Inventor
Walter Vollenweider
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.)
Autophon AG
Original Assignee
Autophon AG
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 Autophon AG filed Critical Autophon AG
Publication of DE3726181A1 publication Critical patent/DE3726181A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B1/00—Details
    • H03B1/04—Reducing undesired oscillations, e.g. harmonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/007—Generation of oscillations based on harmonic frequencies, e.g. overtone oscillators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0078—Functional aspects of oscillators generating or using signals in quadrature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2202/00—Aspects of oscillators relating to reduction of undesired oscillations
    • H03B2202/08—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/009—Reduction of local oscillator or RF leakage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Noise Elimination (AREA)
DE19873726181 1986-09-05 1987-08-06 Verfahren zum ueberlagerungsempfang eines modulierten signals Withdrawn DE3726181A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH357286A CH671856A5 (enrdf_load_stackoverflow) 1986-09-05 1986-09-05

Publications (1)

Publication Number Publication Date
DE3726181A1 true DE3726181A1 (de) 1988-03-10

Family

ID=4258882

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873726181 Withdrawn DE3726181A1 (de) 1986-09-05 1987-08-06 Verfahren zum ueberlagerungsempfang eines modulierten signals

Country Status (2)

Country Link
CH (1) CH671856A5 (enrdf_load_stackoverflow)
DE (1) DE3726181A1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125995A1 (de) * 1991-06-08 1992-12-10 Licentia Gmbh Empfaengeranordnung
WO1998040968A3 (en) * 1997-03-12 1999-02-18 Koninkl Philips Electronics Nv A frequency conversion circuit
EP0932252A3 (en) * 1998-01-23 1999-12-08 Matsushita Electric Industrial Co., Ltd. Tuning demodulator for digitally modulated RF signals
US6282413B1 (en) 1997-03-12 2001-08-28 U.S. Philips Corporation Multistaged frequency conversion with single local oscillator
WO2001058103A3 (en) * 2000-02-02 2002-02-14 Interdigital Tech Corp Kaskadenfrequenzumsetzer unter verwendung von phasenverschobenen signalen der lokalen oszillatoren
EP1063767A3 (en) * 1999-06-22 2003-08-20 Alps Electric Co., Ltd. Digital television tuner having simple baseband signal processing portion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9017418D0 (en) * 1990-08-08 1990-09-19 Gen Electric Co Plc Half frequency mixer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2742578A1 (de) * 1977-09-22 1979-04-05 Hirschmann Radiotechnik Frequenzumsetzer-einheit mit zwei mischstufen
DE3114063A1 (de) * 1981-04-07 1982-10-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Empfangssystem
JPS61171207A (ja) * 1985-01-25 1986-08-01 Nec Corp 受信機

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125995A1 (de) * 1991-06-08 1992-12-10 Licentia Gmbh Empfaengeranordnung
US5283532A (en) * 1991-06-08 1994-02-01 Temic Telefunken Microelectronic Gmbh Receiver having a local oscillator first synchronized to a reference frequency and then to a received signal
WO1998040968A3 (en) * 1997-03-12 1999-02-18 Koninkl Philips Electronics Nv A frequency conversion circuit
US6282413B1 (en) 1997-03-12 2001-08-28 U.S. Philips Corporation Multistaged frequency conversion with single local oscillator
EP0932252A3 (en) * 1998-01-23 1999-12-08 Matsushita Electric Industrial Co., Ltd. Tuning demodulator for digitally modulated RF signals
US6668025B1 (en) 1998-01-23 2003-12-23 Matsushita Electric Industrial Co., Ltd. Tuning demodulator for digitally modulated RF signals
EP1063767A3 (en) * 1999-06-22 2003-08-20 Alps Electric Co., Ltd. Digital television tuner having simple baseband signal processing portion
WO2001058103A3 (en) * 2000-02-02 2002-02-14 Interdigital Tech Corp Kaskadenfrequenzumsetzer unter verwendung von phasenverschobenen signalen der lokalen oszillatoren

Also Published As

Publication number Publication date
CH671856A5 (enrdf_load_stackoverflow) 1989-09-29

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination