EP 1125411 A1 20010822 - METHOD AND SYSTEM FOR ADJUSTING SPURIOUS LINES OF AN OUTPUT FREQUENCY SPECTRUM IN A SIDEBAND FREQUENCY TRANSLATING DEVICE
Title (en)
METHOD AND SYSTEM FOR ADJUSTING SPURIOUS LINES OF AN OUTPUT FREQUENCY SPECTRUM IN A SIDEBAND FREQUENCY TRANSLATING DEVICE
Title (de)
VERFAHREN UND SYSTEM ZUR NIVEAUREGELUNG DER STÖRSPEKTRALLINIEN VON DEM FREQUENZSPEKTRUM DES AUSGANGS EINER EINSEITENBAND-FREQUENZUMSETZUNGSANORDNUNG
Title (fr)
PROCEDE ET SYSTEME DE REGLAGE DU NIVEAU DES RAIES PARASITES DU SPECTRE FREQUENTIEL DE SORTIE D'UN DISPOSITIF DE TRANSPOSITION DE FREQUENCE A BANDE LATERALE
Publication
Application
Priority
- FR 9902570 W 19991022
- FR 9813332 A 19981023
Abstract (en)
[origin: FR2785111A1] The mixer spurious harmonics reduction method has test signal parameters (TXI,TXQ) applied with phase shifting to the I and Q input ports of the mixer. The test parameters are set so as to cover a range of values. Knowledge of the parabolic curve followed by the output values then allows a microprocessor to find an optimum solution, and set the mixer to these values.
IPC 1-7
IPC 8 full level
H04L 27/36 (2006.01); H03D 7/18 (2006.01)
CPC (source: EP US)
H04L 27/364 (2013.01 - EP US); H03D 7/18 (2013.01 - EP US)
Citation (search report)
See references of WO 0025494A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
FR 2785111 A1 20000428; FR 2785111 B1 20040820; EP 1125411 A1 20010822; US 6393258 B1 20020521; WO 0025494 A1 20000504
DOCDB simple family (application)
FR 9813332 A 19981023; EP 99949091 A 19991022; FR 9902570 W 19991022; US 42096299 A 19991020