DETERMINATION OF INSTANTANEOUS IMPEDANCE OF AN AC POWER LINE USED AS A TRANSMISSION LINE

DETERMINATION OF INSTANTANEOUS IMPEDANCE OF AN AC POWER LINE USED AS A TRANSMISSION LINE

There is provided a method and apparatus for determining the input impedance (Z L ) of an AC transmission line used for Power Line Communications (PLC), using a transmitted data packet having a preamble portion. The method comprises, at the analog-front-end (AFE) of the AC transmission line, determi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: PICHOT, Matthieu, VU, Dinh Thang, CHIUMMIENTO, Philippe
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:There is provided a method and apparatus for determining the input impedance (Z L ) of an AC transmission line used for Power Line Communications (PLC), using a transmitted data packet having a preamble portion. The method comprises, at the analog-front-end (AFE) of the AC transmission line, determining the current through the AFE and the AC transmission line during transmission of the preamble portion of the data packet and determining the voltage during transmission of the preamble portion of the data packet. The method further comprises calculating the total impedance (Z t ) from the determined current and voltage. The total impedance (Z t ) includes the input impedance (Z L ) of the AC transmission line and the AFE impedance (Z AFE ). Finally, the method includes determining the input impedance (Z L ) of the AC transmission line from the total impedance (Zt).