NO924011L - Koblingsanordning til henholdsvis kvadratmodulasjon og kvadratdemodulasjon - Google Patents

Koblingsanordning til henholdsvis kvadratmodulasjon og kvadratdemodulasjon

Info

Publication number
NO924011L
NO924011L NO92924011A NO924011A NO924011L NO 924011 L NO924011 L NO 924011L NO 92924011 A NO92924011 A NO 92924011A NO 924011 A NO924011 A NO 924011A NO 924011 L NO924011 L NO 924011L
Authority
NO
Norway
Prior art keywords
frequency
local oscillator
square modulation
amplifier
output signal
Prior art date
Application number
NO92924011A
Other languages
English (en)
Other versions
NO924011D0 (no
Inventor
Josef Fenk
Peter Sehrig
Original Assignee
Siemens 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 Siemens Ag filed Critical Siemens Ag
Publication of NO924011D0 publication Critical patent/NO924011D0/no
Publication of NO924011L publication Critical patent/NO924011L/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • 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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • 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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

En koblingsanordning til henholdsvis kvadraturmodulasjon og -demodulasjon, omfatter en lokal oscillator (LO) til generering av et utgangssignal av bestemt. frekvens, en etter den lokale oscillator (LO) koblet faseskifter (PS) til generering av to ortogonale bæresignaler, en forsterker (AGC) med en gitt øvre grensefrekvens og som påstyres av et informasjonssignal, og to multipli-katorer (Ml, MQ) som multipliserer utgangssignalet fra forsterkeren (AGC) med henholdsvis et ortogonalt bære-signal, slik at frekvensen til utgangssignalet fra den lokale oscillator (LO) er høyere enn den øvre grensefrekvens til forsterkeren (A) og at en frekvensdeler (FT) koblet mellom den lokale oscillator (LO) og faseskifteren (PS).
NO92924011A 1991-10-15 1992-10-15 Koblingsanordning til henholdsvis kvadratmodulasjon og kvadratdemodulasjon NO924011L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4134128 1991-10-15

Publications (2)

Publication Number Publication Date
NO924011D0 NO924011D0 (no) 1992-10-15
NO924011L true NO924011L (no) 1993-04-16

Family

ID=6442732

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92924011A NO924011L (no) 1991-10-15 1992-10-15 Koblingsanordning til henholdsvis kvadratmodulasjon og kvadratdemodulasjon

Country Status (3)

Country Link
EP (1) EP0537750A1 (no)
FI (1) FI924648A (no)
NO (1) NO924011L (no)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879758A (en) * 1987-01-02 1989-11-07 Motorola, Inc. Communication receiver system having a decoder operating at variable frequencies
EP0305604B1 (en) * 1987-09-03 1992-06-03 Koninklijke Philips Electronics N.V. Receiver comprising parallel signal paths

Also Published As

Publication number Publication date
FI924648A (fi) 1993-04-16
FI924648A0 (fi) 1992-10-14
NO924011D0 (no) 1992-10-15
EP0537750A1 (de) 1993-04-21

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