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1. (WO2001035592) METHOD AND TEST DEVICE FOR DETERMINING AND CORRECTING AN OFFSET IN DIRECT VOLTAGE ON A MODULATOR
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/035592 International Application No.: PCT/DE2000/002464
Publication Date: 17.05.2001 International Filing Date: 26.07.2000
Chapter 2 Demand Filed: 08.12.2000
IPC:
H03C 3/40 (2006.01) ,H04L 1/24 (2006.01) ,H04L 27/20 (2006.01) ,H04L 27/36 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
C
MODULATION
3
Angle modulation
38
by converting amplitude modulation to angle modulation
40
using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
24
Testing correct operation
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
18
Phase-modulated carrier systems, i.e. using phase-shift keying
20
Modulator circuits; Transmitter circuits
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
32
Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34
Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36
Modulator circuits; Transmitter circuits
Applicants: EBNER, Harald[DE/DE]; DE (UsOnly)
KUPKA, Werner[DE/DE]; DE (UsOnly)
SIEMENS AKTIENGESELLSCHAFT[DE/DE]; Wittelsbacherplatz 2 D-80333 München, DE (AllExceptUS)
Inventors: EBNER, Harald; DE
KUPKA, Werner; DE
Common
Representative:
SIEMENS AKTIENGESELLSCHAFT; Postfach 22 16 34 D-80506 München, DE
Priority Data:
199 53 873.509.11.1999DE
Title (EN) METHOD AND TEST DEVICE FOR DETERMINING AND CORRECTING AN OFFSET IN DIRECT VOLTAGE ON A MODULATOR
(FR) PROCEDE ET APPAREIL DE TEST POUR LA DETERMINATION ET LA CORRECTION D'UN DECALAGE DE TENSION CONTINUE DANS UN MODULATEUR
(DE) VERFAHREN UND TESTGERÄT ZUR ERMITTLUNG UND KORREKTUR EINES GLEICHSPANNUNGSVERSATZES AN EINEM MODULATOR
Abstract:
(EN) The invention relates to a method for determining an offset in direct voltage and/or at least one correction value therefor on a modulator which, by modulating a digital or analog input signal on a transmission carrier, generates an output signal in which the information is located at least in the instantaneous frequency thereof or in its phase progression. The invention is characterized in that the offset in direct voltage and/or the correction value are determined in a directly mathematical manner from the progression of the phase error of the output signal with regard to an ideal signal.
(FR) Procédé de détermination d'un décalage de tension continue et/ou au moins d'une valeur de correction pour ce décalage, dans un modulateur qui produit, par modulation d'un signal d'entrée numérique ou analogique sur une porteuse d'émission, un signal de sortie dans lequel les informations se trouvent au moins dans sa fréquence instantanée et plus précisément dans son déroulement de phase. Ledit procédé se caractérise en ce que le décalage de tension continue et/ou la valeur de correction sont déterminés directement et mathématiquement sur la base du déroulement de l'erreur de phase du signal de sortie par rapport à un signal idéal.
(DE) Die Erfindung betrifft ein Verfahren zur Ermittlung eines Gleichspannungsversatzes und/oder zumindest eines Korrekturwertes hierfür an einem Modulator, der durch Modulation eines digitalen oder analogen Eingangssignals auf einen Sendeträger ein Ausgangssignal erzeugt, bei dem die Information zumindest in seiner Momentanfrequenz beziehungsweise in seinem Phasenverlauf liegt. Das Verfahren zeichnet sich dadurch aus, dass aus dem Verlauf des Phasenfehlers des Ausgangssignals gegenüber einem Idealsignal der Gleichspannungsversatz und/oder der Korrekturwert direkt mathematisch ermittelt werden.
Designated States: CN, HU, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)